Lead and Copper Rule (LCR) violations in Arizona
160 active public water systems in Arizona had a Lead and Copper Rule (LCR) violation in the past three years, 159 of them in the latest quarter of EPA's data. What Lead and Copper Rule (LCR) is and why it matters.
Systems with a Lead and Copper Rule (LCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
CS Verde Lee Water Company Clifton · Greenlee County |
604 | 5 | 1 | |
|
Appaloosa Water Company Chino Valley · Yavapai County |
600 | 5 | 2 | |
|
Sun Valley Farms Unit VI Queen Creek · Pinal County |
600 | 7 | 2 | |
|
Scua Cutter County |
574 | 5 | 2 | |
|
Bradshaw Water Company INC Prescott · Yavapai County |
510 | 4 | 1 | |
|
Lukachukai Community School New Lukachukai Community School New · County |
500 | 4 | 1 | |
|
Sedona Venture Water Company Sedona · Yavapai County |
480 | 2 | 1 | |
|
Arizona Training Program Coolidge · Pinal County |
470 | 8 | 2 | |
|
Lower Moencopi Spring Source Lower Moencopi · County |
465 | 12 | 3 | |
|
Graham County Utilities-Fort Thomas Pima · Graham County |
452 | 2 | 0 | |
|
Duncan Elementary School Duncan · Greenlee County |
450 | 4 | 1 | |
|
Hopi Cultural Center Hopi Cultural Center · County |
450 | 4 | 2 | |
|
Laguna Mobile Home and RV Park Yuma · Yuma County |
450 | 5 | 2 | |
|
Grand Canyon Junction Hydro Valle · Coconino County |
430 | 6 | 0 | |
|
Shepard Water Company Martinez Lake · Yuma County |
430 | 7 | 2 | |
|
Town & Country Preston Nogales · Santa Cruz County |
430 | 6 | 5 | |
|
Chui Chu Chui Chu · County |
420 | 1 | 1 | |
|
Asarco Hayden Operations Hayden · Gila County |
417 | 5 | 0 | |
|
Littlefield Unified School District 9 Beaver Dam · Mohave County |
400 | 4 | 2 | |
|
Picacho Peak RV Resort Red Rock · Pinal County |
400 | 6 | 1 | |
|
Sky HI Dwid Pinetop · Navajo County |
390 | 6 | 4 | |
|
Granite Mountain Water Company Prescott · Yavapai County |
381 | 5 | 3 | |
|
Wonderland Acres Dwid Lakeside · Navajo County |
380 | 8 | 4 | |
|
Pinedale Dwid Pinedale · Navajo County |
376 | 3 | 1 | |
|
CS Flagstaff Ranch Water Company Flagstaff · Coconino County |
350 | 7 | 2 | |
|
Timberline MHP Show Low · Navajo County |
350 | 5 | 2 | |
|
Shangri la Ranch New River · Maricopa County |
345 | 6 | 2 | |
|
Scua Lower Peridot Bush County |
342 | 4 | 4 | |
|
Lower Moencopi Consecutive System Lower Moencopi · County |
326 | 6 | 3 | |
|
JO Combs Elementary School Queen Creek · Pinal County |
325 | 4 | 2 | |
|
Valle Verde del Norte Green Valley · Pima County |
300 | 4 | 1 | |
|
Ventura Ranch Dwid Prescott Valley · Yavapai County |
300 | 6 | 2 | |
|
MT Lemmon Dwid Mount Lemmon · Pima County |
290 | 2 | 1 | |
|
Sun Valley Utilities Sun Valley · Navajo County |
287 | 8 | 3 | |
|
Rio Mercado Water Tucson · Pima County |
266 | 5 | 0 | |
|
Sierrita Mountain Water Coop Tucson · Pima County |
258 | 4 | 1 | |
|
LA Cholla Airpark Tucson · Pima County |
250 | 2 | 1 | |
|
Porter Creek Dwid Lakeside · Navajo County |
250 | 7 | 4 | |
|
Yucca Water Association Yucca · Mohave County |
250 | 4 | 1 | |
|
Hickmans Egg Ranch Tonopah Tonopah · Maricopa County |
235 | 5 | 1 | |
|
Camp Mohave Bullhead City · Mohave County |
224 | 6 | 1 | |
|
Crown King Water Company Crown King · Yavapai County |
220 | 6 | 5 | |
|
New River School New River · Maricopa County |
211 | 4 | 2 | |
|
Sleepy Hollow RV County |
207 | 6 | 5 | |
|
National Memorial Cemetery Cave Creek · Maricopa County |
202 | 4 | 2 | |
|
Lost Traveler RV Park Yuma · Yuma County |
200 | 3 | 1 | |
|
Virgin Mountain Utilities Company Beaver Dam · Mohave County |
200 | 4 | 0 | |
|
Cibola Water Improvement District Cibola · La Paz County |
197 | 8 | 2 | |
|
Tonto Creek Water Company Kohls Ranch · Gila County |
190 | 4 | 1 | |
|
Calportland Rillito Cement Plant Rillito · Pima County |
184 | 4 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Lead and Copper Rule (LCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule (LCR) 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.