ADVICE LETTERS


An index of Advice Letters is available on the CPUC's web site - Water Advice Letter Search

Customers can also visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.


| Northern Division | Central Division | Southern Division | All Districts (Water) | East Pasadena | Piru (Warring) | Bellflower | Wastewater Service |

Northern Division

The Northern Division is made up of the Sacramento Tariff Area which includes the Sacramento area, Dunnigan, Geyserville, and Hillview; Larkfield; Meadowbrook; and Fruitridge Vista Service Areas. 

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.

Sacramento Tariff Area:

Approved & Effective
Advice Letter 1001 Intervenor
Advice Letter 1102-B Consolidated Expense Balancing Account (CEBA)
Advice Letter 1102-A see final approved 1102-B
Advice Letter 1102 see final approved 1102-B
Advice Letter 1140-A 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1140 see final approved 1140-A
Advice Letter 1157-A 2016 WRAM MCBA
Advice Letter 1157 see final approved 1157-A
Advice Letter 1170-A Oxbow Marina Mutual Water Company
Advice Letter 1170 see final approved 1170-A
Advice Letter 1187 Sacramento Purchase Water Offset 2017
Advice Letter 1195-A 2017 WRAM MCBA (Supplemental)
Advice Letter 1195 see final approved 1195-A
Advice Letter 1203-A Drought Memo Account
Advice Letter 1203 see final approved 1203-A
Advice Letter 1209-A Anexation by City of Sacramento - Rosemont
Advice Letter 1209 see final approved 1209-A
Advice Letter 1210 RFPS correction on Interim Rates
Advice Letter 1214-B Chromium VI
Advice Letter 1214-A see final approved 1214-B
Advice Letter 1214 see final approved 1214-B
Advice Letter 1219 Parkway System Service Boundary Change
Advice Letter 1227-A Close and Modify Purchase Water Accounts
Advice Letter 1227 see final approved 1227-A
Advice Letter 1252 Interim Rate True Up
Advice Letter 1263-B 2018 Northern Division WRAM & MCBA Supplemental
Advice Letter 1263-A see final approved 1263-B
Advice Letter 1263 see final approved 1263-B
Advice Letter 1270-B 2020 Step Rate Filing
Advice Letter-1270-A 2020 Step Rate Filing
Advice Letter 1270 2020 Step Rate Filing
Advice Letter 1277 Chromium 6 Resolution
Advice Letter 1283 Sacramento and Larkfield Purchased Water Offset
Advice Letter 1288 2019 Northern Division WRAM & MCBA
Advice Letter 1299-A Supplemental Hillview Acquisition
Advice Letter 1299 see final approved 1299-A
Advice Letter 1324 Sacramento and Meadowbrook Chromium 6 Balancing Account Update
Advice Letter 1330 2021 WRAM MCBA - Northern Division
Advice Letter 1337 Schedule 14.1 - Stage 2 Activation Geyserville
Advice Letter 1356 2022 Step Rate - Northern Division
Advice Letter 1359 2022 ACAM - Northern Division  
Advice Letter 1368 PCWA Unit Cost Update  
Advice Letter 1369 Schedule 14.1 - Sacramento
Advice Letter 1373 Meadowbrook CIAC Surcharge Update 
Advice Letter 1370 Schedule 14.1 - Northern Acquisitions 
Advice Letter 1378 2019 Interim Rate True-Up - Northern Division
Advice Letter 1385 2021 WRAM MCBA - Northern Division
Advice Letter 1389 Hillview Service Area Extension
Advice Letter 1393 2023 Step Rate - Northern Division
Advice Letter 1396 2023 Annual Consumption Adjustment Mechanism (ACAM) - Northern Division
Advice Letter 1407 2022 WRAM MCBA - Northern Division
Advice Letter 1417 2023 Northern Division Production Expense Offset
Advice Letter 1421 Emergency Interconnection Agreement - Town of Windsor
Advice Letter 1423 Fruitridge Vista and Hillview SRF Balancing Accounts
Advice Letter 1425 2024 ACAM - Northern Division
Advice Letter 1434 2024 Northern Division Production Expense Offset
Advice Letter 1439 2023 WRAM/MCBA - Northern Division
Advice Letter 1446 Confirming Cal Ams Assumption of Bass Lake SRF Loan
Pending & Effective
Advice Letter 1450 Bass Lake Transaction Memorandum Account
Advice Letter 1451 2025 ACAM (Northern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  


Larkfield Tariff Area:

Approved & Effective
Advice Letter 1086 2017 Purchased Water Offset
Advice Letter 1107-A Consolidated Expense Balancing Account (CEBA)
Advice Letter 1107 see final approved 1107-A
Advice Letter 1137-A 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1137 see final approved 1137-A
Advice Letter 1156 2016 WRAM MCBA
Advice Letter 1181 Emergency Residential Customer Protections for October Wildfire Victims
Advice Letter 1182 Emergency Non-Residential Customer Protections for October Wildfire Victims
Advice Letter 1198 2017 WRAM MCBA
Advice Letter 1200-A Drought Memo Account
Advice Letter 1200 see final approved 1200-A
Advice Letter 1210 RFPS correction on Interim Rates
Advice Letter 1216 2018 Larkfield Purchased Water Offset
Advice Letter 1234-A 2019 Step Rate filing Northern Division (Sacramento, Larkfield, Meadowbrook, Dunnigan)
Advice Letter 1234 see final approved 1234-A
Advice Letter 1243 2018 Purchased Water Reset
Advice Letter 1252 Interim Rate True Up
Advice Letter 1263-B 2018 Northern Division WRAM & MCBA Supplemental
Advice Letter 1263-A see final approved 1263-B
Advice Letter 1263 see final approved 1263-B
Advice Letter 1270-B 2020 Step Rate Filing
Advice Letter-1270-A 2020 Step Rate Filing
Advice Letter 1270 2020 Step Rate Filing
Advice Letter 1283 Sacramento and Larkfield Purchased Water Offset
Advice Letter 1288 2019 Northern Division WRAM & MCBA
Advice Letter 1330 2020 Northern Division WRAM & MCBA
Advice Letter 1341 Schedule 14.1- Activate Stage 2 - Larkfield 
Advice Letter 1348 2021 Larkfield Purchased Water Offset
Advice Letter 1356 2022 Step Rate - Northern Division
Advice Letter 1359 2022 ACAM - Northern Division
Advice Letter 1378 2019 Interim Rate True-Up - Northern Division
Advice Letter 1385 2021 WRAM MCBA - Northern Division
Advice Letter 1393 2023 Step Rate - Northern Division
Advice Letter 1396 2023 Annual Consumption Adjustment Mechanism (ACAM) - Northern Division
Advice Letter 1407 2022 WRAM MCBA 
Advice Letter 1417 2023 Northern Division Production Expense Offset
Advice Letter 1425 2024 ACAM - Northern Division
Advice Letter 1434 2024 Northern Division Production Expense Offset
Advice Letter 1439 2023 WRAM/MCBA - Northern Division
Pending & Effective
Advice Letter 1451 2025 ACAM (Northern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  


Meadowbrook Tariff Area:

Approved & Effective
Advice Letter 1165 Acquisition Implementation
Advice Letter 1166 Transaction Cost surcharge
Advice Letter 1270-B 2020 Step Rate Filing
Advice Letter-1270-A 2020 Step Rate Filing
Advice Letter 1270 2020 Step Rate Filing
Advice Letter 1324 Sacramento and Meadowbrook Chromium 6 Balancing Account Update
Advice Letter 1356 2020 Step Rate - Northern Division
Advice Letter 1359 2022 ACAM - Northern Division  
Advice Letter 1370 Schedule 14.1 - Northern Acquisitions 
Advice Letter 1373 Meadowbrook CIAC Surcharge Update 
Advice Letter 1378 2019 Interim Rate True-Up - Northern Division
Advice Letter 1385 2021 WRAM MCBA - Northern Division
Advice Letter 1393 2023 Step Rate - Northern Division
Advice Letter 1396 2023 Annual Consumption Adjustment Mechanism (ACAM) - Northern Division
Advice Letter 1407 2022 WRAM MCBA
Advice Letter 1417 2023 Northern Division Production Expense Offset
Advice Letter 1425 2024 ACAM - Northern Division
Advice Letter 1434 2024 Northern Division Production Expense Offset
Advice Letter 1439 2023 WRAM/MCBA - Northern Division
Pending & Effective
Advice Letter 1451 2025 ACAM (Northern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Fruitridge Vista Service Area:

Approved & Effective
Advice Letter 1279 Fruitridge Vista Water Acquisition
Advice Letter 1356 2020 Step Rate - Northern Division
Advice Letter 1370 Schedule 14.1 - Northern Acquisitions 
Advice Letter 1378 2019 Interim Rate True-Up - Northern Division
Advice Letter 1393 2023 Step Rate - Northern Division
Advice Letter 1396 2023 Annual Consumption Adjustment Mechanism (ACAM) - Northern Division
Advice Letter 1417 2023 Northern Division Production Expense Offset
Advice Letter 1423 Fruitridge Vista and Hillview SRF Balancing Accounts
Advice Letter 1425 2024 ACAM - Northern Division
Advice Letter 1434 2024 Northern Division Production Expense Offset
Advice Letter 1439 2023 WRAM/MCBA - Northern Division
Pending & Effective
N/A  
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Central Division 

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.

Monterey Service Area:

Approved & Effective
Advice Letter 1011-A Sand City Exception Surcharge
Advice Letter 1011 see final approved 1011-A
Advice Letter 1142-B Low Income Surcharge
Advice Letter 1142-A see final approved 1142-B
Advice Letter 1142 see final approved 1142-B
Advice Letter 1144-A Base Rates
Advice Letter 1144 see final approved 1144-A
Advice Letter 1145 Monterey Schedule and Rule 14.1.1 Update
Advice Letter 1149 Meter Based WRAM/MCBA Surcharge
Advice Letter 1152 MPWMD User Fee 
Advice Letter 1163-B 2016 WRAM/MCBA Surcharge (won't bill until March 31, 2019)
Advice Letter 1163-A see final approved 1163-B
Advice Letter 1163 see final approved 1163-B
Advice Letter 1174-B Carmel River Mitigation BA Balance to CEBA
Advice Letter 1174-A see final approved 1174-B
Advice Letter 1174 see final approved 1174-B
Advice Letter 1176-A MPWMD Conservation Balancing Account Transfer to CEBA
Advice Letter 1176 see final approved 1176-A
Advice Letter 1178 Monterey Pipeline & Pump Station
Advice Letter 1180 Public Water Now Intervenor Compensation
Advice Letter 1185 Carmel River Mitigation and MPWMD BA Closure
Advice Letter 1190-A Monterey Construction Rate Correction
Advice Letter 1190 see final approved 1190-A
Advice Letter 1199 2017 WRAM/MCBA Surcharge
Advice Letter 1202-B Drought Memo Account
Advice Letter 1202-A  see final approved 1202-B
Advice Letter 1202 see final approved 1202-B
Advice Letter 1213 Monterey Tariff Clean-up 
Advice Letter 1220-A MPWSP Modification and Memo Accounts
   Advice Letter 1220    see final approved 1220-A
Advice Letter 1222 Monterey Leak Adjustment Balancing Accounts
Advice Letter 1226-A Seaside Ground Water Basin Balancing Account
Advice Letter 1226 see final approved 1226-A
Advice Letter 1227-A  Close and Modify Purchase Water Accounts
Advice Letter 1227 see final approved 1227-A
Advice Letter 1231 MPWSP Expanded GWR 
Advice Letter 1236-A 2019 Step Rate filing Central Division (Monterey Main, Ambler Park, Toro, Ralph Lane, Garrapata)
Advice Letter 1236 see final approved 1236-A
Advice Letter 1237 Monterey Phase 3A Consumption Settlement - ACAM
Advice Letter 1238-A Monterey Pipeline and Pump Station
Advice Letter 1238 see final approved 1238-A
Advice Letter 1240 Sand City Business License Correction
Advice Letter 1248 RFPS Surcharge Update
Advice Letter 1256  Interim Rate True Up
Advice Letter 1265-A 2018 Monterey WRAM & MCBA Supplemental
Advice Letter 1265 see final approved 1265-A
Advice Letter 1271 2020 Step Rate Filing
Advice Letter 1274 Phase 3A Settlement Agreement- 2020 Consumption Adjustment Mechanism
Advice Letter 1278 2020 Monterey Consumption Adjustment Mechanism Rate Implementation
Advice Letter 1291-A 2019 WRMA & MCBA Monterey
Advice Letter 1291 see final approved 1291-A
Advice Letter 1295 Surfrider Foundation Intervenor Compensation
Advice Letter 1297 2017 Monterey WRAM & MCBA Non-Residential
Advice Letter 1298-A 2020 Monterey Purchased Water Offset
Advice Letter 1298   see final approved 1298-A
Advice Letter 1302 Salinas Valley Water Intervenor Compensation 
Advice Letter 1309 2017-2020 NOAA/ESA Recovery 
Advice Letter 1310 Central Division Tariff Clean-Up
Advice Letter 1311 Fiscal Year 2020-2021 PWM Increase
Advice Letter 1313 Filing to recover intervenor compensation awarded to Monterey County Landwatch
Advice Letter 1314 Filing to recover intervenor compensation awarded to Planning and Conservation League
Advice Letter 1315 2021 Monterey Phase 3A - ACAM
Advice Letter 1316 2018-2020 Conservation Update
Advice Letter 1319 Implementation of 2021 Consumption Adjustment Mechanism
Advice Letter 1321 Public Water Now Intervenor Compensation
Advice Letter 1329 2020 Monterey WRAM & MCBA
Advice Letter 1336 2021 Monterey Purchased Water Offset
Advice Letter 1357 2022 Step Rate - Central Division
Advice Letter 1360 2022 ACAM - Central Division
Advice Letter 1365 Monterey Non-Residential WRAM Implementation 
Advice Letter 1366 Monterey NOAA Recovery 
Advice Letter 1375-A Fiscal Year 2022-2023 PWM Increase Supplement
Advice Letter 1376 Rule and Schedule 14.1.1 Stage 2 Activation - Monterey 
Advice Letter 1379 2019 GRC Interim Rate True-Up - Central Division
Advice Letter 1381 Monterey Service Area Expansion Contiguous Parcels
Advice Letter 1387-A 2021 Monterey WRAM & MCBA
Advice Letter 1387 see final approved 1387-A
Advice Letter 1394 2023 Step Rate - Central Division
Advice Letter 1397 2023 Annual Consumption Adjustment Mechanism (ACAM) - Central Division
Advice Letter 1401 PWM Expansion - Subaccount for MPWSP Phase 1 MA
Advice Letter 1403 Emergency Protections - January Floods - Central Division
Advice Letter 1405 Emergency Protections - March Storms - Central Division
Advice Letter 1406 Pure Water Monterey Capital Filing - Parallel Pipeline
Advice Letter 1408 2022 WRAM MCBA - Central Division
Advice Letter 1412 PWM Capital Filing - Carmel Valley Pumpstation
Advice Letter 1413 2023 Monterey Purchased Water Offset
Advice Letter 1414 Rule and Schedule 14.1.1 Stage 1 Activation - Monterey
Advice Letter 1418 2023 Central Division Production Expense Offset
Advice Letter 1426 2024 ACAM - Central Division
Advice Letter 1436 Emergency Protections - January Floods - 12 Month Update - Central Division
Advice Letter 1437 2024 Interim Rates Multi-Use Sheet 2 Update
Advice Letter 1438 Emergency Protections - March Storms - 12 Month Update - Central Division
Advice Letter 1440 2023 WRAM/MCBA - Central Division
Advice Letter 1447 2024 Central Production Expense Offset
Advice Letter 1448 Sand City Franchise Fee Update
Advice Letter 1422-A Corral De Tierra Acquisition
Pending & Effective
Advice Letter 1452 2025 ACAM (Central)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
Advice Letter 1289-A Waterplus Intervenor Compensation
Advice Letter 1402 PWM Expansion - Potential Mercury

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Central Satellite:
(includes: Ambler / Ralph Lane / Chualar / Garrapata / Toro):

Approved & Effective
Advice Letter 1111-A Toro Consolidated Expense Balancing Account (CEBA)
Advice Letter 1111 see final approved 1111-A
Advice Letter 1115-A Consolidated Expense Balancing Account (CEBA)
Advice Letter 1115 see final approved 1115
Advice Letter 1142-B 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1142-A see final approved 1142-B
Advice Letter 1142 see final approved 1142-B
Advice Letter 1144-A Metered Rates
Advice Letter 1144 see final approved 1144-A
Advice Letter 1151-A Toro 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1151 see final approved 1151
Advice Letter 1158 Toro 2016 WRAM MCBA
Advice Letter 1162-A 2016 WRAM MCBA
Advice Letter 1162 see final approved 1162-A
Advice Letter 1172 Chualar Fire Flow Improvement (Monterey County District)
Advice Letter 1193 Toro 2017 WRAM MCBA
Advice Letter 1197 2017 WRAM MCBA
Advice Letter 1226-A Seaside Ground Water Basin Balancing Account
Advice Letter 1226 see final approved 1226-A
Advice Letter 1227-A Close and Modify Purchase Water Accounts
Advice Letter 1227 see final approved 1227-A
Advice Letter 1255 Interim Rate True Up
Advice Letter 1264 2018 Central Satellite WRAM & MCBA
Advice Letter 1271 2020 Step Rate Filing
Advice Letter 1290 2019 WRAM & MCBA Central Satellite
Advice Letter 1310 Central Division Tariff Clean-Up
Advice Letter 1316 2018-2020 Conservation Update
Advice Letter 1327 2020 Central Satellite WRAM & MCBA
Advice Letter 1357 2022 Step Rate - Central Division
Advice Letter 1360 2022 ACAM - Central Division
Advice Letter 1371 Schedule 14.1 - Central Satellites 
Advice Letter 1379 2019 GRC Interim Rate True-Up - Central Division
Advice Letter 1387-A 2021 Monterey WRAM & MCBA
Advice Letter 1387 see final approved 1387-A
Advice Letter 1394 2023 Step Rate - Central Division
Advice Letter 1397 2023 Annual Consumption Adjustment Mechanism (ACAM) - Central Division
Advice Letter 1403 Emergency Protections - January Floods - Central Division
Advice Letter 1405 Emergency Protections - March Storms - Central Division
Advice Letter 1408 2022 WRAM MCBA - Central Division
Advice Letter 1418 2023 Central Division Production Expense Offset
Advice Letter 1426 2024 ACAM - Central Division
Advice Letter 1440 2023 WRAM/MCBA - Central Division
Pending & Effective
Advice Letter 1452 2025 ACAM (Central)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Southern Division

The Southern Division is made up of Ventura and Rio Plaza; Los Angeles - Baldwin Hills, Duarte, and San Marino; and San Diego Service Areas.  

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.

Los Angeles Service Area:

Approved & Effective
Advice Letter 1126-A Purchased Water Offset
Advice Letter 1126 see final approved 1126-A
Advice Letter 1141-A 2017 Step Rates (Quantity Rates, Service Charge, CEBA and LIRA)
 Advice Letter 1141 see final approved 1141-A
Advice Letter 1159-A 2016 WRAM MCBA
Advice Letter 1159    see final approved 1159-A
Advice Letter 1171-A  Los Angeles Irrigation Rate Correction
 Advice Letter 1171 see final approved 1171-A
Advice Letter 1196 2017 WRAM MCBA
Advice Letter 1201-A Drought Memo Account
 Advice Letter 1201 see final approved 1201-A
Advice Letter 1206 Los Angeles (Baldwin Hills) Purchased Water Surcharge 2018
Advice Letter 1210 RFPS correction on Interim Rates
Advice Letter 1217 2018 Los Angeles Purchased Water Offset
Advice Letter 1235-A 2019 Step Rate Filing
 Advice Letter 1235 see final approved 1235-A
Advice Letter 1243  2018 Purchased Water Reset
Advice Letter 1244 Rio Plaza Acquisition
Advice Letter 1245 Rio Plaza Transaction Memo Account
Advice Letter 1250-A  2018 Rio Plaza Groundwater Surcharge 
Advice Letter 1250 see final approved 1250-A
Advice Letter 1251  Interim Rate True Up
Advice Letter 1262-A  2018 Los Angeles WRAM & MCBA Supplemental
 Advice Letter 1262 see final approved 1262-A
Advice Letter 1272 2020 Step Rate Filing
Advice Letter 1287 2019 WRAM & MCBA Los Angeles
Advice Letter 1301 2020 Los Angeles Purchased Water Offset
Advice Letter 1328 2020 Los Angeles WRAM & MCBA
Advice Letter 1338 Central Basin Contamination Memorandum Account
Advice Letter 1342 2021 Los Angeles Purchased Water Offset
Advice Letter 1354 Establish Schedule 14.1 - East Pasadena and Rio Plaza and Activate Stage 2
Advice Letter 1355 Schedule 14.1- Ventura, San Diego, Los Angeles Activate Stage 2
Advice Letter 1358 2022 Step Rate - Southern Division
Advice Letter 1361 2022 ACAM - Southern Division  
Advice Letter 1380 2019 GRC Interim Rate True-Up - Southern Division
Advice Letter 1386 2021 WRAM MCBA
Advice Letter 1395 2023 Step Rate - Southern Division
Advice Letter 1398 2023 Annual Consumption Adjustment Mechanism (ACAM) - Southern Division
Advice Letter 1409 2022 WRAM MCBA - Southern Division
Advice Letter 1419 2023 Southern Division Production Expense Offset
Advice Letter 1427 2024 ACAM - Southern Division
Advice Letter 1435 2024 Southern Production Expense Offset
Advice Letter 1441 2023 WRAM/MCBA - Southern Division
Advice Letter 1449 2024 Southern Division Production Expense Offset
Pending & Effective
Advice Letter 1453 2025 ACAM (Southern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
Advice Letter 1188 Bellflower Acquisition

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San Diego Service Area:

Approved & Effective
Advice Letter 1108-A Consolidated Expense Balancing Account (CEBA)
Advice Letter 1108 see final approved 1108-A
Advice Letter 1138-A 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1138 see final approved 1138-A
Advice Letter 1147 2017 Purchased Water Offset
Advice Letter 1160-A 2016 WRAM MCBA
Advice Letter 1160 see final approved 1160-A
Advice Letter 1179-A Purchase Water Offset
Advice Letter 1179 see final approved 1179-A
Advice Letter 1194 2017 WRAM MCBA
Advice Letter 1204-A Drought Memo Account
Advice Letter 1204 see final approved 1204-A
Advice Letter 1210 RFPS correction on Interim Rates
Advice Letter 1212 2018 Purchase Water Increase
Advice Letter 1233 2019 Step Rate Filing
Advice Letter 1243 2018 Purchased Water Reset
Advice Letter 1253 Interim Rate True Up
Advice Letter 1261 2018 San Diego WRAM & MCBA
Advice Letter 1269 2020 Step Rate Filing
Advice Letter 1281 Purchased Water Offset
Advice Letter 1286-A 2019 San Diego WRAM & MCBA Supplement
Advice Letter 1286 see final approved 1286-A
Advice Letter 1303 San Diego Tariff Clean Up
Advice Letter 1331 2020 San Diego WRAM & MCBA
Advice Letter 1355 Schedule 14.1- Ventura, San Diego, Los Angeles Activate Stage 2
Advice Letter 1358 2022 Step Rate - Southern Division
Advice Letter 1361 2022 ACAM - Southern Division  
Advice Letter 1380 2019 GRC Interim Rate True-Up - Southern Division
Advice Letter 1386 2021 WRAM MCBA
Advice Letter 1395 2023 Step Rate - Southern Division
Advice Letter 1398 2023 Annual Consumption Adjustment Mechanism (ACAM) - Southern Division
Advice Letter 1409 2022 WRAM MCBA - Southern Division
Advice Letter 1419 2023 Southern Division Production Expense Offset
Advice Letter 1427 2024 ACAM - Southern Division
Advice Letter 1435 2024 Southern Production Expense Offset
Advice Letter 1441 2023 WRAM/MCBA - Southern Division
Pending & Effective
Advice Letter 1453 2025 ACAM (Southern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Ventura Service Area:

Approved & Effective
Advice Letter 1109-A Consolidated Expense Balancing Account (CEBA)
Advice Letter 1109 see final approved 1109-A
Advice Letter 1139-A 2017 Step Rates (Quantity Rates, Service Charge, and LIRA)
Advice Letter 1139 see final approved 1139-A
Advice Letter 1148-A 2017 Purchased Water Offset
Advice Letter 1148 see final approved 1148-A
Advice Letter 1161-A 2016 WRAM MCBA
Advice Letter 1161 see final approved 1161-A
 Advice Letter 1183-A Ventura Metered Construction
Advice Letter 1183 see final approved 1183-A
Advice Letter 1192 2017 WRAM MCBA
Advice Letter 1205-B Drought Memo Account
Advice Letter 1205-A see final approved 1205-B
Advice Letter 1205 see final approved 1205-B
Advice Letter 1210 RFPS correction on Interim Rates
Advice Letter 1215 2018 Ventura Purchased Water Offset
Advice Letter 1232 2019 Step Rate Filing
Advice Letter 1243 2018 Purchased Water Reset
Advice Letter 1254 Interim Rate True Up
Advice Letter 1260-A 2018 Ventura WRAM & MCBA Supplemental
Advice Letter 1260 see final approved 1260-A
Advice Letter 1268 2020 Step Rate
Advice Letter 1282 Purchased Water Offset
Advice Letter 1285 2019 Ventura WRAM & MCBA
Advice Letter 1292 Ventura Tariff Clean Up
Advice Letter 1335  2021 Ventura Purchased Water Offset 
Advice Letter 1332  2020 Ventura WRAM & MCBA
Advice Letter 1355 Schedule 14.1- Ventura, San Diego, Los Angeles Activate Stage 2
Advice Letter 1358 2022 Step Rate - Southern Division
Advice Letter 1361 2022 ACAM - Southern Division  
Advice Letter 1380 2019 GRC Interim Rate True-Up - Southern Division
Advice Letter 1386 2021 WRAM MCBA
Advice Letter 1395 2023 Step Rate - Southern Division
Advice Letter 1398 2023 Annual Consumption Adjustment Mechanism (ACAM) - Southern Division
Advice Letter 1409 2022 WRAM MCBA - Southern Division
Advice Letter 1419 2023 Southern Division Production Expense Offset
Advice Letter 1427 2024 ACAM - Southern Division
Advice Letter 1435 2024 Southern Production Expense Offset
Advice Letter 1441 2023 WRAM/MCBA - Southern Division
Pending & Effective
Advice Letter 1453 2025 ACAM (Southern)
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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All Districts (Water)

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.

Approved & Effective
Advice Letter 1072-B Conservation Surcharge
Advice Letter 1072-A see final approved Al 1072-B
Advice Letter 1072 see final approved Al 1072-B
Advice Letter 1154 CEBA (Consolidated Expense Balancing Account)
Advice Letter 1173 Loss of Water Adjustment Request Form
Advice Letter 1177 Residential Fire Protection Service
Advice Letter 1184-B 2018 Interim Rates
Advice Letter 1184-A see final approved Al 1184-B
Advice Letter 1184 see final approved Al 1184-B
Advice Letter 1186 2018 PUC Reimbursement Fee
Advice Letter 1189 2018 Tax Cuts and Jobs Act
Advice Letter 1191 Cost of Capital Memo Account
Advice Letter 1207 Rule 15 Developer Tax Change
Advice Letter 1208 2018 Updated Low Income Guidelines
Advice Letter 1211 Bill for Water Service Redesign
Advice Letter 1218-A Utility Bill Change
Advice Letter 1218 see final approved AL 1218-A
Advice Letter 1223 Tax Cut & Job Act/ COC Closing
Advice Letter 1224 CPUC User Fee 2019
Advice Letter 1225 Conservation Surcharge Balancing Account
Advice Letter 1228 Sustainable Groundwater Management Act Memo Account
Advice Letter 1229 Group Insurance Balancing Account
Advice Letter 1230-B 2016 GRC Rates and Tariff Implementations
Advice Letter 1230-A see final approved Al 1230-B
Advice Letter 1230 see final approved Al 1230-B
Advice Letter 1241 Credit Card Fee Pilot and Memo Account
Advice Letter 1242 Low Income Guideline 2019-2020
Advice Letter 1246 Excess Unprotected (Non-Plant) ADIT Refund
Advice Letter 1247-B Excess Protected (Plant) ADIT Refund
Advice Letter 1247-A see final approved AL 1247-B
Advice Letter 1247 see final approved AL 1247-B
Advice Letter 1249 Operations Forms and Notice Update
Advice Letter 1257 2018 Interim Rate True Up - Private Fire
Advice Letter 1258-A Disaster Relief Communications Plan
Advice Letter 1258 see final approved AL 1258-A
Advice Letter 1259 Excess Unprotected (Non-Plant) ADIT Refund Adjustment Update
Advice Letter 1266 Preliminary Statement Clean-up​
Advice Letter 1267 CEMA Activation - Kincade Fire Geyserville
Advice Letter 1275 Public Safety Shut-Off Memo Account
Advice Letter 1276-A Water Shutoff Protection Act Supplemental
   Advice Letter 1276  see final approved AL 1276-A
Advice Letter 1280-A Preliminary Statement Clean-Up
   Advice Letter 1280  see final approved AL 1280-A
Advice Letter 1284 COVID-19 Emergency Customer Protections and CEMA Activation
Advice Letter 1293 Private Fire Tariff Update
Advice Letter 1294 COVID-19 Customer Protections
Advice Letter 1296 2020-2021 Low Income Guideline Update
Advice Letter 1300 2019 Excess Protected (Plant) ADIT Refund 
Advice Letter 1304 Late Payment Fee Tariff Revision
Advice Letter 1305 2020 CPUC Reimbursement Fee 
Advice Letter 1306 Pressure Requirement Exception - Moo Land Inc
Advice Letter 1307 Discretionary Filing For Expansion of Low Income Program
Advice Letter 1308 Wildfire Emergency Customer Protections 
Advice Letter 1312 Update - Effective Date to November 1, 2020 - 2019 Excess Protected (Plant) ADIT Refund
Advice Letter 1317 Post Disaster Kincade Fire Geyserville 
Advice Letter 1318-A Establish 2021 Interim Rates and Memorandum Account  
Advice Letter 1318   see final approved 1318-A
Advice Letter 1320-A Multi-Family Assistance Pilot Program 
Advice Letter 1320 see final approved 1320-A
Advice Letter 1322  2018 to 2020 Conservation Accounting Update
Advice Letter 1323  Resolution M-4849 - COVID-19 Customer Protections Extension 
Advice Letter 1325  COVID-19 Customer Protections 12 Month Update
Advice Letter 1326 LIRA to CAP Update
Advice Letter 1333 Transition Plan for COVID Emergency Protection Discontinuance
Advice Letter 1334 Customer Assistance Program Annual Update Guidelines
Advice Letter 1339 COVID-19 Customer Protection Extension To September 30, 2021
Advice Letter 1340 2020 Excess Plant Related ADIT 
Advice Letter 1343 Creation of Drought Memorandum Account (DRMA)
Advice Letter 1345 Post Disaster - 2020 Wildfires
Advice Letter 1346 Leak - High Bill Adjustment Policy 
Advice Letter 1349 Updating Form Tairffs
Advice Letter 1350 Drinking Water Fees Memorandum Account 
Advice Letter 1351 Creation of TCP Litigation Proceeds Memorandum Account (TCPLMA)
Advice Letter 1353 CAW 2019 General Rate Case Implementation Advice Letter 
Advice Letter 1363 2022 ACAM Implementations - All Divsions
Advice Letter 1364 Update to Rule 15 Contributions For Tax Changes 
Advice Letter 1362-A Tariff Clean-Up - Feb 2022
Advice Letter 1367 AMI Opt-Out Tariff
Advice Letter 1372 Update to Rule 16 
Advice Letter 1374 Update Customer Assistance Program Guidelines 
Advice Letter 1377 Preliminary Statement and Tariff Clean-up 
Advice Letter 1382 Fruitridge Vista Special Facilities Fee
Advice Letter 1384 2019 GRC Interim Rate True Up - Fire Service
Advice Letter 1399 2023 Update CPUC User Fee
Advice Letter 1400 2023 ACAM Implementation
Advice Letter 1391 Intervenor Compensation to Pacific Institute
Advice Letter 1392 Intervenor Compensation to Center for Accessible Technology
Advice Letter 1404 Bellflower Incorporation Into Authorized Rates
Advice Letter 1410 CAP Guidelines
Advice Letter 1411 Intervenor Compensation to NCLC
Advice Letter 1415 Water Cost of Capital Adjustment Mechanism
Advice Letter 1420 Water Cost of Capital Implementation
Advice Letter 1424 2023 Water Cost of Capital Trigger Mechanism
Advice Letter 1428 Drinking Water Fees Balancing Account
Advice Letter 1429 2024 CPUC User Fee Update
Advice Letter 1433 2024 ACAM Implementation
Advice Letter 1430 2024 Interim Rates and Memorandum Account
Advice Letter 1431 2024 CAP Surcharge Update
Advice Letter 1442 Remaining 2019 GRC IRTU
Advice Letter 1443 AMI Opt Out Update
Advice Letter 1444 Remaining 2019 GRC IRTU - Fire Service
Advice Letter 1445 CAP Guidelines Update
Pending & Effective
N/A  
Pending & Not Currently Effective
Advice Letter 1416 West San Martin Acquisition
Withdrawn/Rejected/Suspended
Advice Letter 1221 Low Income Supplemental Special Condition #4
Advice Letter 1239 Affiliate Transaction Rules
Advice Letter 1273 California Consumer Privacy Act Memo Account

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East Pasadena Service Area

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.
 

Approved & Effective
Advice Letter 1344 East Pasadena Memorandum Account Tariff Integration Post-Acquisition
Advice Letter 1347 East Pasadena Acquisition
Advice Letter 1352 East Pasadena Purchased Power & Pumping Assessment Balancing Account Recovery
Advice Letter 1354 Establish Schedule 14.1 - East Pasadena and Rio Plaza and Activate Stage 2
Advice Letter 1432 Discretionary Filing for Expansion of CAP Program
Pending & Effective
N/A  
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Piru (Warring) Service Area

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.
 

Approved & Effective
Advice Letter 1383 Piru (Warring) Memorandum Account Integration
Advice Letter 1388 Piru (Warring) Acquisition Integration
Advice Letter 1432 Discretionary Filing for Expansion of CAP Program
Pending & Effective
N/A  
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Bellflower Service Area

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs.
 

Approved & Effective
Advice Letter 1390 Bellflower Acquisition Integration
Advice Letter 1419 2023 Southern Division Production Expense Offset
Pending & Effective
N/A  
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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Wastewater Service

An index of Advice Letters is also available on the CPUC's web site - Water Advice Letter Search

Customers can visit their local California American Water office to view copies of pending applications, advice letters, and previous tariffs. 
 

Wastewater Service:

Approved & Effective
Advice Letter 47-S-A Monterey WW 2017 Step
Advice Letter 47-S see final approved 47-S-A
Advice Letter 48-S PUC User Fee
Advice Letter 49-S 2017 LIRA Guidelines Update
Advice Letter 50-S 2018 PUC User Fee
Advice Letter 51-S Monterey WW 2018 GRC Interim Rate
Advice Letter 52-S Tax Cuts and Jobs Act
Advice Letter 53-S 2018 GRC Rates and Tariff Implementations - Wastewater (Dunnigan and Monterey WW)
Advice Letter 54-S Monterey Waste Water 2019 Step Rates
Advice Letter 55-S Correct CEBA Surcredit - WW
Advice Letter 56-S Excess Unprotected (Non Plant) ADIT Refund
Advice Letter 57-S-A Excess Protected (Plant) ADIT Refund
Advice Letter 57 see final approved 57-S-A
Advice Letter 58-S 2018 Interim Rate True Up - Wastewater (Dunnigan and Monterey WW)
Advice Letter 59-S-A 2020 Step Rate Filing - Wastewater (Monterey WW)
  Advice Letter 59-S see final approved 59-S-A
Advice Letter 60-S 2020 Step Rate Filing - Wastewater (Dunnigan WW) Northern Division
Advice Letter 61-S Schedule SA Tariff Update
Advice Letter 62-S Monterey Wastewater Tariff Update
Advice Letter 63-S 2019 Excess Protected (Plant) ADIT Refund 
Advice Letter 64-S Update- Effective Date to November 1, 2020 - 2019 Excess Protected (Plant) ADIT Refund 
Advice Letter 65-S Establish 2021 Interim Rates and Memorandum Account 
Advice Letter 66-S Update LIRA to CAP and CAP Annual Income Guidelines
Advice Letter 67-S 2020 Excess Plant ADIT
Advice Letter 68-S CAW 2019 General Rate Case Implementation Advice Letter   
Advice Letter 69-S 2022 Step Rate - Monterey Wastewater
Advice Letter 70-S 2022 Step Rate - Dunnigan Wastewater
Advice Letter 71-S 2019 GRC Interim Rate True-Up - Wastewater
Advice Letter 72-S 2023 Step Rate - Monterey Wastewater
Advice Letter 73-S 2023 Step Rate - Dunnigan Wastewater
Advice Letter 74-S 2023 Update CPUC User Fee
Advice Letter 75-S Wastewater Cost of Capital Implementation
Advice Letter 76-S 2023 Wastewater Cost of Capital Trigger Mechanism
Advice Letter 77-S 2024 CPUC User Fee Update Wastewater
Advice Letter 78-S 2024 Interim Rates
Advice Letter 79-S 2024 CAP Surcharge Update WW (Dunnigan & Monterey Service Areas)
Advice Letter 80-S CAP Guidelines Update
Pending & Effective
N/A  
Pending & Not Currently Effective
N/A  
Withdrawn/Rejected/Suspended
N/A  

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