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8/4/2026
WT Staff
 Got water questions? Give us a call at 877-52-WATER (877-529-2837), or email us at info@watertoday.ca
Aug 4, 2026 907 am PDT
Safe Drinking Water Act Compliance
WTCAL.us Serious Violators List July 2026
As of the latest quarter evaluated, ended March 31, 2026
7,406 Drinking Water Facilities with active permits in California (decrease of 4)
- 1246 (16.8%) have Current Violations (decrease of 7 from last quarter)
- 52 (0.7%) have Significant Violations (decrease of 5 from last report)
- 1970 (26.6%) have Formal Enforcement Actions in the last 5 yrs (decrease of 51 from last quarter)
- 73,803 (.2%) of California's 38,889,770 residents are served by Serious Violators (increase of 20,570 from the last quarter)
83% of California facilities are compliant with Safe Drinking Water Act.
Twenty-two drinking water facilities have been added to the Serious Violator List in July 2026; the new arrivals are indicated with an asterisk. Congratulations to 27 DWFs that have successfully resolved their significant violations and been removed from Serious Violator list. Nineteen of these graduates spent just one quarter on the SV list, resolving their issues in a short time. The SV graduates are shown below the current list.
WTCAL.us Serious Violators List July 2026
A1 Winstons Mobile Home Park*, pop 75 (San Joaquin)
Alpine Springs Mobile Home Park, pop 175 (Los Angeles)
Aha Quin, pop 315 (Riverside)
Avi Casino*, pop 3001
Avi Kwa Ame Farms North, pop 40
Baker Ranch Water Corp*, pop 75 (Placer)
Big Bend, pop 50 (Shasta)
Big River Development, pop 3550(Mendocino)
Big Sandy Rancheria*, pop 408
CAL Fire - High Rock Conservation Camp, pop 80 (Humboldt)
California State Polytechnical University - Pomona, pop 29854 (Los Angeles)
Capell Valley Estates*, pop 208 (Napa)
Clark Street Community Well*, pop 90 (Kern)
Cold Springs Main, pop 209
Cold Springs Subdivision, pop 35
DD Mobile Home Park, pop 300
Delano Growers Grape Products*, pop 65 (Kern)
Deloro Valley Water System*, pop 40 (Tuolumne)
Descanso Community Water District*, pop 870 (San Diego)
Guatay Mutual Benefit Corporation*, pop 100 (San Diego)
Grindstone Rancheria*, pop 150
Huron, City of*, pop 9306 (Fresno)
Havasu Water Company, pop 361
Indian Village, pop 35
La Posta Upper*, pop 73
Madison Service District, pop 876 (Yolo)
Mescal Creek Water, Inc.*, pop 25 (Los Angeles)
Monte Vista Farming, pop 188 (Stanislaus)
Nixon*, pop 800
Pala North*, pop 14,280
Pinecrest Elementary School*, pop 28 (Tuolumne)
Pioneer Elementary School, pop 227 (El Dorado)
Pleasant Grove Mobile Home Park*, pop 327 (Butte)
Rivers End Trail Park, pop 35 (Los Angeles)
Rock Creek Mutual Water Co, pop 60 (Del Norte)
Redding Rancheria, pop 2015
Round Valley Agency, pop 84
Round Valley Health Clinic, pop 119
Round Valley Hidden Oaks Casino and Restaurant*, pop 137
Siskiyou County Service Area #5/Carrick, pop 143 (Siskiyou)
Sky Acres Mutual Water Corp*, pop 175 (Madera)
Sandoval Mobile Home Park, pop 38
Sutcliffe*, pop 250
Two Twenty Four MHP, pop 35 (Madera)
Toledo Mobile Home Park, pop 68 (Tribal)
Tule River Reservation Main, pop 2560 (Tribal)
Turner Trailer Park, pop 70
Utu Utu Gwaitu Paiute Tribe, pop 107
Wadsworth*, pop 950
Yurok - Requa, pop 215
Yurok - Trewer Water System, pop 300
Congratulations to the facilities removed from the Serious Violator List in July 2026
- Bagdad Cafe*, pop 25 (San Bernardino)
- Blairsden Water Users*, pop 200 (Plumas)
- Cacheville Service District*, pop 239 (Yolo)
- Campo Elementary School*, pop 300 (San Diego)
- Cantina Water System, pop 35 (Madera)
- Capell Valley Estates, pop 208 (Napa)
- Ceres Unified - Westport School, pop 450 (Stanislaus)
- Desert Dunes Golf Club*, pop 125 (Riversdale)
- Empire Landing Campground-Sundance RV*, pop 126 (San Bernardino)
- Forest Lawn Scout Reservation*, pop 200 (San Bernardino)
- Gordon Acres Water Co*, pop 200 (San Bernardino)
- Grindstone Rancheria, pop 150
- Knoll Enterprises*, pop 500 (San Bernardino)
- Lakeview Apartments*, pop 43 (Santa Cruz)
- Mesa Grande Tract 2, pop 43
- Napa River Ranch*, pop 70 (Napa)
- Pit River Montgomery Creek Rancheria*, pop 90
- Put River XL Rancheria*, pop 61
- Quechan Utility, pop 5660 (Imperial)
- Rod Mclellan Botanicals WS*, pop 69 (Monterey)
- Round Valley Admin Complex*, pop 100
- Round Valley Piner*, pop 409
- San Antonio Lake Park South WS*, pop 653 (Monterey)
- Sunnyside Farms Mutual Water Co*, pop 436 (Los Angeles)
- TN Truss, pop 45 (Los Angeles)
- VFW Post 5551*, pop 70 (San Bernardino)
- Washington Water District*, pop 330 (Nevada)
Congratulations to the facilities removed from the Serious Violator List in April 2026
- Arroyo Seco Estates MWS, pop 70 (Monterey)
- Ballico CSD, pop 238 (Merced)
- Crew Wine Company, pop 312 (Yolo)
- Desert Rose MHP, pop 30
- Firestone Business Park WS, pop 154 (Monterey)
- Gemperle Egg Ranch, pop 55 (Merced)
- Hughes-Elizabeth Lake Unified School District, pop 550 (Los Angeles)
- La Tierra Heights Mutual, pop 67 (Napa)
- Marquez Rental, pop 50 (Madera)
- Mountain Village Homeowner's Association, pop 40 (Butte)
- Murphy Hill Water System #02, pop 66 (Monterey)
- Pajaro Valley Greenhouse WS, pop 80 (Monterey)
- Palomino Estates Water Company, pop 64 (Humboldt)
- Pine Valley Mutual WC*, pop 2645 (San Diego)
- PSMCSD - Springfield WS, pop 200 (Monterey)
- Rio Bend RV Golf Resort & Storm Crossing, pop 130 (Imperial)
- Skyview County Water, pop 412 (Tehama)
- Spreckels Ln Water System #02, pop 31 (Monterey)
- Talley Transportation Inc, pop 35 (Madera)
- The Village MHP, pop 71 (Los Angeles)
- Twin Lakes Resort*, pop 400 (San Diego)
- Two Twenty Four Mobile Home Park, pop 35 (Madera)
Congratulations to the facilities removed from the Serious Violator List in January 2026
- Angelique Maelee Properties*, pop 50 (Tuolumne)
- Big Sandy Rancheria, pop 408
- Boulevard Pines MHP*, pop 18 (San Diego)
- Corda Road Water System, pop 54 (Madera)
- Indian Village, pop 35
- Moro Cojo MWA, pop 67 (Monterey)
- Land Projects Mutual Water Co*, pop 2800 (Los Angeles)
- Pacific Reserve Nursery Water System, pop 25, (Monterey)
- Round Valley Hidden Oaks Casino, pop 137
- Santa Rosa Rancheria, pop 1000 (Tribal)
- USN San Clemente Island, pop 800 (San Diego)
Congratulations to the 5 facilities removed from the Serious Violator List of November 2025
- Orleans Mutual Water Company, pop 85 (Humboldt)
- Redding Rancheria*, pop 2015 (Tribal)
- Turner Trailer Park, pop 70
- Tule River Reservation Main*, pop 2560 (Tribal)
- Yurok - McCoy-Kenek*, pop 30 (Tribal)
Congratulations to the 21 facilities removed from the Serious Violator List of July 2025
- Arviso Mobile Home Park*, pop 70
- Bishop Paiute Shoshone Indian Tribe, pop 2735
- Bornt 1992 Irrevocable Trust*, pop 30 (Imperial)
- Coarse Gold Inn*, pop 30 (Madera)
- East Acres Mutual Water Company*, pop 250 (Madera)
- Fort Independence*, pop 120
- John Hovannisian Water System*, pop 80 (Madera)
- Junction City School*, pop 80(Trinity)
- Juniper Riviera CWD*, pop 924 (San Bernardino)
- Margaret Keating Main & Oper*, pop 120 (Del Norte)
- McCleod CSD*, pop 1317 (Siskiyou)
- Morton Bay Professional Plaza*, pop 25 (Santa Barbara)
- Mountainview Cold Storage*, pop 140 (Tulare)
- Palo Verde County Water District*, pop 410 (Imperial)
- Pike Ranch Mutual Water Co*, pop 74 (Madera)
- Pit River Montgomery Creek Rancheria*, pop 90
- Redding Racheria, pop 2015
- Redwood Maintenance and Operations*, pop 421 (Del Norte)
- Santa Rosa Rancheria*, pop 1000
- Shively's Bar and Grill*, pop 26 (Stanislaus)
- SWS Land Development Inc*, pop 529 (Madera)
Congratulations to the ten facilities removed from the Serious Violator List of May 2025
- American Legion #593 Water System*, pop 25 (Monterey)
- Aguirre Mobile Home Park, pop 60
- Angelique Maelee Properties*, pop 50
- Big Basin Water Company*, pop 1120 (Santa Cruz)
- Bridgehaven Park, pop 70
- Bud Antle Marina Water System*, pop 151 (Monterey)
- Campers Inn RV and Golf Course, pop 140 (Yolo)
- Central Valley Baptist Church Water System*, pop 556 (San Joaquin)
- Desert View Mobile Home Park, pop 54 (San Bernardino)
- White Rock Club Water System*, pop 27(Monterey)
Congratulations to five facilities removed from the serious violator list in January 2025
- Cazadero Water Company Inc.*, pop 250
- Eastin, pop 26 (Stanislaus)
- Foothill Mutual Water Company, pop 39
- Pavestone, pop 40 (Yolo)
- Pit River Chimney Rock, pop 35
Removed from the serious violator list in October 2024
- Kashia, pop 153
- Lazy B Mobile Home Park, pop 125 (Stanislaus)
- Martinez Apartments, pop 26 (San Joaquin)
- River Oak Grace Water System, pop 500 (Stanislaus)
- Round Valley Agency, pop 84
- Round Valley Piner, pop 409
From EPA definitions
“A Serious Violator (in the Safe Drinking Water Act program) is the most serious level of violation noted in EPA databases. This designation provides an indication of whether violations or noncompliance events at a given facility may pose a more severe level of concern for the environment or program integrity.”
*Note that drinking water information provided on this site is aggregated from the federal EPA database, state resources and local government sources where available.
EPA publishes violation and enforcement data quarterly, based on the inspection reports of the previous quarter. Water systems, states and EPA take up to three months to verify this data is accurate and complete.
Specific questions about your local water supply should be directed to the facility.
The EPA safe drinking water facilities data available to the public presents what is known to the government based upon the most recently available information for more than one million regulated facilities. EPA and states inspect a percentage of facilities each year, but many facilities, particularly smaller ones, may not have received a recent inspection. It is possible that facilities do have violations that have not yet been discovered, thus are shown as compliant in the system.
EPA cannot positively state that facilities without violations shown in ECHO are necessarily fully compliant with environmental laws. Additionally, some violations at smaller facilities do not need to be reported from the states to EPA. If ECHO shows a recent inspection and the facility is shown with no violations identified, users of the ECHO site can be more confident that the facility is in compliance with federal programs.
The compliance status of smaller facilities that have not had recent inspections or review by EPA or the states may be unknown or only available via state data systems.
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