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 |
|---|---|---|---|---|
|
Lost Traveler RV Park Yuma · Yuma County |
200 | 3 | 1 | |
|
Picacho Elementary School District Picacho · Pinal County |
200 | 5 | 0 | |
|
Rancho Bonito RV Park Yuma · Yuma County |
200 | 2 | 0 | |
|
Rocky Rim Resort Cabins Overgaard · Navajo County |
200 | 3 | 0 | |
|
Stadium Chevron Glendale · Maricopa County |
200 | 4 | 0 | |
|
Virgin Mountain Utilities Company Beaver Dam · Mohave County |
200 | 4 | 0 | |
|
Cibola Water Improvement District Cibola · La Paz County |
197 | 8 | 2 | |
|
Cathedral Vista Water Company Sedona · Yavapai County |
196 | 2 | 0 | |
|
Cottonwood Day School Bia Cottonwood · County |
185 | 3 | 0 | |
|
Grand View Camp Eagar · Apache County |
180 | 3 | 0 | |
|
The Oaks Mobile Home Park Superior · Pinal County |
180 | 2 | 0 | |
|
Christopher Creek MHP Christopher Creek · Gila County |
175 | 2 | 1 | |
|
Kinlichee Community School Bia Kinlichee · County |
174 | 5 | 2 | |
|
Tumacacori National Historic Park Nogales · Santa Cruz County |
170 | 2 | 0 | |
|
CS Lake Verde Water Company Camp Verde · Yavapai County |
169 | 4 | 0 | |
|
Casitas de Castilian Tucson · Pima County |
167 | 5 | 1 | |
|
Brentwood Camp Alpine · Apache County |
165 | 2 | 0 | |
|
Greenfields Country Day School Tucson · Pima County |
163 | 6 | 0 | |
|
A Petersen Water Company Snowflake · Navajo County |
160 | 2 | 0 | |
|
Whispering Hope Payson · Gila County |
160 | 1 | 0 | |
|
Apache Acres MHP Lakeside · Navajo County |
150 | 4 | 1 | |
|
Landmark at the Creek Christopher Creek · Gila County |
150 | 1 | 0 | |
|
Lazy L Resort RV Park Overgaard · Navajo County |
150 | 3 | 1 | |
|
Ligurta Stat Restaurant Ligurta · Yuma County |
150 | 2 | 0 | |
|
Linden Lds Church Show Low · Navajo County |
150 | 3 | 0 | |
|
Oak Creek Vineyards Cornville · Yavapai County |
150 | 3 | 1 | |
|
R Bar C Scout Ranch Christopher Creek · Gila County |
150 | 2 | 0 | |
|
The Willow Wedding Venue Surprise · Maricopa County |
150 | 1 | 0 | |
|
Usaf Gila Bend Gila Bend · Maricopa County |
150 | 4 | 0 | |
|
Sun Leisure Estates Improvement District Yuma · Yuma County |
143 | 4 | 0 | |
|
American Ranch Dwid Prescott · Yavapai County |
140 | 5 | 0 | |
|
The Pharm Willcox · Cochise County |
140 | 3 | 0 | |
|
Woodruff Domestic Water Company INC Woodruff · Navajo County |
140 | 5 | 3 | |
|
Roosevelt Resort LLC Roosevelt · Gila County |
139 | 4 | 1 | |
|
Coronado Memorial Sierra Vista · Cochise County |
135 | 2 | 0 | |
|
Dateland Travel Center Dateland · Yuma County |
135 | 1 | 0 | |
|
Ranch Water Service INC Kingman · Mohave County |
135 | 7 | 1 | |
|
Canyon Water Improvement District Globe · Gila County |
130 | 3 | 0 | |
|
Lake Mead City Comm Coop 1 Meadview · Mohave County |
130 | 3 | 0 | |
|
John Wayne RV Ranch Stanfield · Pinal County |
125 | 2 | 0 | |
|
Sonoita Mercantile Water System Sonoita · Santa Cruz County |
125 | 3 | 0 | |
|
Bouse RV Park Bouse · La Paz County |
122 | 1 | 0 | |
|
CS Rancheros Bonitos Water Company Yuma · Yuma County |
120 | 5 | 0 | |
|
Mobile Home Properties Sahuarita · Pima County |
114 | 3 | 1 | |
|
Black Canyon KOA INC Black Canyon City · Yavapai County |
110 | 1 | 0 | |
|
Freeport McMoran Bagdad Big Sandy Cyprus Bagdad · Yavapai County |
110 | 2 | 0 | |
|
Double R Water Distributors, Inc. Yucca · Mohave County |
108 | 1 | 0 | |
|
CS Green Acres Water Company Yuma · Yuma County |
105 | 2 | 0 | |
|
CS Citrus Park Water Company Tacna · Yuma County |
102 | 6 | 1 | |
|
Adot Ehrenberg Poe Ehrenberg · La Paz County |
100 | 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.