Revised Total Coliform Rule (RTCR) violations in Arizona
493 active public water systems in Arizona had a Revised Total Coliform Rule (RTCR) violation in the past three years, 204 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Silverview RV Park Bullhead City · Mohave County |
800 | 6 | 0 | |
|
Willow Beach Nps Willow Beach · Mohave County |
789 | 8 | 2 | |
|
Liberty Elementary School Buckeye · Maricopa County |
775 | 5 | 0 | |
|
Rock Point Community School Bia Rock Point · County |
758 | 3 | 1 | |
|
Meteor Crater Visitor Center Winslow · Coconino County |
750 | 1 | 0 | |
|
Pilot Travel Centers 1180 Tonopah · Maricopa County |
750 | 1 | 0 | |
|
Lake Mohave Highlands Bullhead City · Mohave County |
746 | 6 | 0 | |
|
Scua Lower Peridot County |
702 | 7 | 3 | |
|
Adaman Mutual Water Company Adaman · Maricopa County |
700 | 8 | 1 | |
|
Pinto Valley Mine Globe · Gila County |
699 | 3 | 0 | |
|
Ganado Public Schools Ganado · County |
684 | 4 | 1 | |
|
CS High Country Pines Water Company Heber · Navajo County |
668 | 4 | 0 | |
|
Yuma Lakes Resort Yuma · Yuma County |
652 | 3 | 0 | |
|
Apache Burger Travel Center County |
650 | 4 | 1 | |
|
CS Tierra Mesa Estates Water Company Yuma · Yuma County |
632 | 3 | 0 | |
|
San Carlos High School San Carlos High School · County |
626 | 5 | 0 | |
|
Sipaulovi (lower Sipaulovi/lower Mishongnovi) Lower Sipaulovi, Lower Mishongnovi · County |
609 | 5 | 2 | |
|
CS Verde Lee Water Company Clifton · Greenlee County |
604 | 5 | 1 | |
|
Del Pueblo RV Park Tennis Resort Yuma · Yuma County |
600 | 2 | 1 | |
|
Main Street Market #640 Ehrenberg · La Paz County |
600 | 4 | 0 | |
|
St Michael Indian School St. Michaels · County |
585 | 5 | 1 | |
|
Aspc Apache Winslow · Apache County |
540 | 5 | 0 | |
|
CS Gadsden Water Company Gadsden · Yuma County |
540 | 3 | 1 | |
|
Peak View Ranch Surprise · Maricopa County |
508 | 1 | 0 | |
|
Clints Well Gas and GO Clints Well · Coconino County |
500 | 1 | 0 | |
|
Lukachukai Community School New Lukachukai Community School New · County |
500 | 4 | 1 | |
|
Pinon Community Dormitory School Bia Pinon · County |
500 | 2 | 0 | |
|
Tacna Water Improvement District Tacna · Yuma County |
500 | 3 | 0 | |
|
Mishongnovi (upper Sipaulovi/upper Mishongnovi) Upper Sipaulovi, Upper Mishongnovi · County |
490 | 4 | 1 | |
|
Pride Travel Centers #1215 Hope · La Paz County |
490 | 1 | 0 | |
|
Loves Travel Stop #272 Kingman · Mohave County |
476 | 3 | 1 | |
|
Dilcon Community Boarding School Bia Dilcon · County |
473 | 5 | 1 | |
|
Arizona Training Program Coolidge · Pinal County |
470 | 8 | 2 | |
|
Lower Moencopi Spring Source Lower Moencopi · County |
465 | 12 | 3 | |
|
Laguna Mobile Home and RV Park Yuma · Yuma County |
450 | 5 | 2 | |
|
Country Club Acres Water INC Wickenburg · Maricopa County |
431 | 4 | 0 | |
|
Grand Canyon Junction Hydro Valle · Coconino County |
430 | 6 | 0 | |
|
Shepard Water Company Martinez Lake · Yuma County |
430 | 7 | 2 | |
|
Clay Springs Dwid Clay Springs · Navajo County |
425 | 2 | 0 | |
|
Adot Sanders Port of Entry Sanders · Apache County |
420 | 2 | 0 | |
|
Pleasant Harbor Marina Peoria · Maricopa County |
420 | 2 | 1 | |
|
Wagon West RV Park Brenda · La Paz County |
416 | 1 | 0 | |
|
Katherine Heights Bullhead City · Mohave County |
415 | 7 | 0 | |
|
Fishers Landing Resort Yuma · Yuma County |
402 | 3 | 0 | |
|
Canyon Lake Marina Canyon Lake · Maricopa County |
400 | 3 | 0 | |
|
Eden Water Company INC Safford · Graham County |
400 | 6 | 0 | |
|
Mobile Gardens Dwid Wittmann · Maricopa County |
400 | 5 | 0 | |
|
Raymond Scout Camp Flagstaff · Coconino County |
400 | 2 | 0 | |
|
Saguaro View Mgmt Company Surprise · Maricopa County |
400 | 4 | 0 | |
|
Tyson Wells RV Park Quartzsite · La Paz County |
400 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) 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 Arizona 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.