Chlorine (MRDL) violations in California
53 active public water systems in California had a Chlorine (MRDL) violation in the past three years, 12 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Tule River Reservation Main Tule River Reservation · County |
2,560 | 9 | 2 | |
|
Redding Rancheria County |
2,015 | 7 | 2 | |
|
Santa Rosa Rancheria Santa Rosa Rancheria · County |
1,000 | 5 | 1 | |
|
DD Mobile Home Park County |
275 | 9 | 3 | |
|
Table Bluff (new) Reservation County |
230 | 4 | 1 | |
|
Howonquet Community(smith River) Howonquet Community · County |
220 | 5 | 0 | |
|
Round Valley Health Clinic County |
119 | 7 | 3 | |
|
Yurok Wautec County |
96 | 5 | 0 | |
|
Pit River Montgomery Creek Rancheria Montgomery Creek Rancheria · County |
90 | 11 | 0 | |
|
Shackleford Creek Community Water System County |
80 | 5 | 0 | |
|
Pit River XL Rancheria Pit River Tribe · County |
61 | 6 | 0 | |
|
Indian Village County |
35 | 7 | 2 | |
|
Jackson Rancheria Casino & Hotel County |
6,120 | 1 | 0 | |
|
Big River Development Big River · County |
3,550 | 9 | 4 | |
|
Soboba County |
3,000 | 2 | 0 | |
|
Dry Creek Rancheria County |
2,200 | 1 | 0 | |
|
Bear River/singley Hill County |
1,530 | 4 | 0 | |
|
Hard Rock Casino Tejon County |
1,500 | 2 | 0 | |
|
California Village County |
1,290 | 5 | 2 | |
|
Bear River Tish Non Village Bear River - Tish Non Village · County |
650 | 2 | 0 | |
|
Mesquite Creek County |
650 | 5 | 1 | |
|
Big Pine Paiute Band Big Pine Reservation · County |
600 | 1 | 1 | |
|
Big Sandy Rancheria Big Sandy Rancheria · County |
408 | 5 | 2 | |
|
Campo Church Road System (hud Homes) County |
400 | 3 | 0 | |
|
Del Dios Mutual Water Company San Diego County |
330 | 3 | 0 | |
|
Mitomkai Tribal Water System Lockhart · County |
300 | 3 | 1 | |
|
Wilton Chevron Sacramento County |
300 | 2 | 0 | |
|
Yurok Terwer Water System County |
300 | 6 | 1 | |
|
Shanel Tribal Utility District County |
250 | 3 | 0 | |
|
Yurok Requa County |
215 | 7 | 2 | |
|
Cold Springs Main Cold Springs Rancheria · County |
209 | 7 | 2 | |
|
Susanville Upper Rancheria Susanville Upper Rancheria · County |
190 | 2 | 0 | |
|
Kashia County |
153 | 7 | 0 | |
|
Redwood Valley Rancheria County |
152 | 4 | 1 | |
|
Summit Mutual Water Company Santa Cruz County |
152 | 1 | 0 | |
|
Grindstone Rancheria County |
150 | 9 | 4 | |
|
Fort Independence Fort Independence Reservation · County |
120 | 5 | 3 | |
|
Yurok Weitchpec County |
120 | 5 | 0 | |
|
Page Avenue Mutual Water Company Orange County |
119 | 2 | 0 | |
|
Old Campo Campo Indian Reservation · County |
102 | 3 | 0 | |
|
Fort Bidwell Reservation County |
88 | 6 | 0 | |
|
Yurok Kepel County |
76 | 7 | 1 | |
|
La Posta Upper County |
73 | 4 | 0 | |
|
Pulikla Tribe County |
70 | 2 | 0 | |
|
Turner Trailer Park County |
70 | 7 | 1 | |
|
Laurel Community League Santa Cruz County |
64 | 2 | 1 | |
|
South Campo County |
63 | 5 | 0 | |
|
La Posta Lower Community County |
60 | 2 | 0 | |
|
Original Sherwood Valley Rancheria County |
60 | 2 | 0 | |
|
Angelique Maelee Properties County |
50 | 8 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The California records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.