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 |
|---|---|---|---|---|
|
Softwinds Mobile Home Park Dewey · Yavapai County |
70 | 5 | 2 | |
|
AZ State Parks River Island Parker · La Paz County |
68 | 1 | 0 | |
|
McNeal Water Company Mcneal · Cochise County |
66 | 6 | 0 | |
|
Usfs Conf Knoll Lake Camp Clints Well · Coconino County |
66 | 3 | 0 | |
|
Double Adobe School Double Adobe · Cochise County |
63 | 6 | 1 | |
|
Crisantes Greenhouse Water System Amado · Santa Cruz County |
60 | 6 | 1 | |
|
Usfs Asnf Horse Springs Horse Springs Cmpgrd · Apache County |
60 | 1 | 0 | |
|
Valley View Water Company Tonopah · Maricopa County |
60 | 3 | 1 | |
|
Worden Water Company Three Points · Pima County |
60 | 6 | 0 | |
|
Cane Valley Ntua Cane Valley · County |
58 | 2 | 2 | |
|
The Brite Spot Palominas · Cochise County |
57 | 2 | 2 | |
|
Mountainaire RV Park Greer · Apache County |
56 | 1 | 0 | |
|
Greenfield Ranchettes Chandler · Maricopa County |
53 | 6 | 1 | |
|
Rancho Sierrita Well Assoc Tucson · Pima County |
51 | 3 | 2 | |
|
Bumblebee Ranch Mayer · Yavapai County |
50 | 1 | 0 | |
|
Concho Dollar General Water System Concho · Apache County |
50 | 1 | 0 | |
|
Grandview Water Company Liberty · Maricopa County |
50 | 6 | 1 | |
|
Lake Mead City Community Coop 2 Meadview · Mohave County |
50 | 3 | 1 | |
|
Red Rock Crossing Mobile Village Sedona · Yavapai County |
50 | 4 | 3 | |
|
Santa Rita Heights MHP Sahuarita · Pima County |
50 | 2 | 1 | |
|
Tombstone Investors, LLC Tombstone · Cochise County |
50 | 3 | 2 | |
|
Bidegain Water Company Kearny · Pinal County |
49 | 6 | 0 | |
|
Pico Vista Community Well Tucson · Pima County |
49 | 1 | 1 | |
|
Alchesay Fish Hatchery Fish Hatchery · County |
46 | 2 | 0 | |
|
Misty Mountain Dwid Pinetop · Navajo County |
44 | 4 | 3 | |
|
Southwestern Research Station Portal · Cochise County |
40 | 3 | 0 | |
|
Usfs Conf Clear Creek Campground Camp Verde · Yavapai County |
40 | 3 | 2 | |
|
Five Oaks Water Owners Oak Creek Canyon · Coconino County |
36 | 2 | 0 | |
|
Usfs Conf Beaver Creek Rimrock · Yavapai County |
35 | 2 | 2 | |
|
Cliff Dwellers Lodge Lees Ferry · Coconino County |
34 | 3 | 1 | |
|
Manneken Apartments Prescott · Yavapai County |
34 | 1 | 1 | |
|
Usfs Conf Blue Ridge Ranger Station Clints Well · Coconino County |
32 | 4 | 0 | |
|
Oak Creek Terrace Motel Oak Creek Canyon · Coconino County |
30 | 3 | 1 | |
|
Sonoita Springs Water Company Sonoita · Santa Cruz County |
30 | 3 | 2 | |
|
Tortilla Flat Resort Tortilla Flat · Maricopa County |
30 | 3 | 0 | |
|
Kelvin Simmons Coop Riverside · Pinal County |
28 | 6 | 1 | |
|
Antelope Point Marina Antelope Point Marina · County |
25 | 2 | 2 | |
|
Clear Creek RV Park Camp Verde · Yavapai County |
25 | 4 | 1 | |
|
Cocopah Tribal Headquarters Hauled Water County |
25 | 1 | 0 | |
|
Danny B's Fish and Chips Restaurant Chino Valley · Yavapai County |
25 | 2 | 2 | |
|
Kirkland Bar and Steakhouse Kirkland · Yavapai County |
25 | 3 | 1 | |
|
Mexican Water Trading Post Mexican Water · County |
25 | 3 | 3 | |
|
Patagonia Sonoita Creek Preserve Patagonia · Santa Cruz County |
25 | 1 | 0 | |
|
Pilot Travel Center #1175 Cordes Junction · Yavapai County |
25 | 1 | 0 | |
|
Sanders Dollar General Sanders · Apache County |
25 | 2 | 1 | |
|
Siete Casas Joint Venture Tucson · Pima County |
25 | 2 | 2 | |
|
The Nature Conservancy Ramsey Canyon · Cochise County |
25 | 1 | 1 | |
|
Tonopah Dollar General Tonopah · Maricopa County |
25 | 1 | 0 | |
|
Twin Arrows Ntua Twin Arrows · County |
25 | 3 | 2 | |
|
Usfs Conf Happy Jack Work Center Happy Jack · Coconino County |
25 | 2 | 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.