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 |
|---|---|---|---|---|
|
Gilbert, Town of Gilbert · Maricopa County |
247,600 | 9 | 1 | |
|
Peoria City of Peoria · Maricopa County |
187,676 | 4 | 1 | |
|
EL Mirage City of El Mirage · Maricopa County |
39,884 | 4 | 0 | |
|
Bullhead City Mohave Bullhead City · Mohave County |
36,330 | 13 | 1 | |
|
City of Buckeye Valencia Town Division Buckeye · Maricopa County |
30,377 | 3 | 1 | |
|
Pima Utilities Chandler · Maricopa County |
20,000 | 7 | 3 | |
|
Flowing Wells Irrigation District Tucson · Pima County |
16,000 | 6 | 1 | |
|
Winslow City of Winslow · Navajo County |
9,789 | 4 | 2 | |
|
Green Valley Dwid Green Valley · Pima County |
8,687 | 3 | 1 | |
|
Scua Upper Seven Mile County |
8,478 | 12 | 3 | |
|
Snowflake Town of Snowflake · Navajo County |
5,590 | 4 | 0 | |
|
North Mohave Valley Bullhead City · Mohave County |
5,190 | 6 | 2 | |
|
Holbrook City of Holbrook · Navajo County |
4,833 | 6 | 2 | |
|
Aspc Lewis Complex Water System Buckeye · Maricopa County |
4,300 | 6 | 1 | |
|
Graham County Utilities Pima Pima · Graham County |
3,899 | 3 | 1 | |
|
Polacca First Mesa Consolidated Villages · County |
3,890 | 6 | 4 | |
|
Arizona Village County |
3,211 | 10 | 2 | |
|
Williams City of Williams · Coconino County |
3,145 | 7 | 1 | |
|
Desert Foothills Bullhead City · Mohave County |
3,091 | 6 | 1 | |
|
Wmatua Hondah-McNary County |
2,988 | 3 | 1 | |
|
Clearwater Utility Company INC Buckeye · Maricopa County |
2,747 | 5 | 1 | |
|
Tonto Apache County |
2,580 | 6 | 1 | |
|
Picacho Water Company Casa Grande · Pinal County |
2,440 | 3 | 1 | |
|
Chino Meadows II Chino Valley · Yavapai County |
2,350 | 6 | 4 | |
|
Arizona Water CO Ajo Ajo · Pima County |
2,100 | 1 | 1 | |
|
Springerville Town of Springerville · Apache County |
1,972 | 5 | 1 | |
|
Joseph City Dwid Joseph City · Navajo County |
1,811 | 4 | 1 | |
|
Sheraton Phoenix Downtown Morristown · Maricopa County |
1,804 | 4 | 1 | |
|
CS Hydro Resources-Tusayan Tusayan · Coconino County |
1,710 | 4 | 0 | |
|
Utility Source LLC Bellemont · Coconino County |
1,710 | 4 | 2 | |
|
Bisbee Douglas Intl Airport Bisbee · Cochise County |
1,700 | 3 | 1 | |
|
Brophy College Preparatory Phoenix · Maricopa County |
1,500 | 3 | 1 | |
|
Mayer Dwid Mayer · Yavapai County |
1,400 | 7 | 1 | |
|
Granite Oaks Water Users Association Prescott · Yavapai County |
1,200 | 5 | 3 | |
|
Mammoth Town of Mammoth · Pinal County |
1,181 | 6 | 1 | |
|
Tonto Basin Water LR Gardens West Payson · Gila County |
1,172 | 2 | 1 | |
|
Adoc Florence Asp Florence · Pinal County |
1,001 | 8 | 4 | |
|
Outlets North Phoenix Maricopa · Maricopa County |
1,000 | 2 | 1 | |
|
Town & Country Estates Tucson · Pima County |
960 | 2 | 1 | |
|
Rincon Country East RV Park Tucson · Pima County |
912 | 2 | 1 | |
|
Verde Lakes Water Dinky Creek Camp Verde · Yavapai County |
875 | 6 | 0 | |
|
Verde Lakes Water Big Valley Camp Verde · Yavapai County |
870 | 6 | 1 | |
|
Heber Dwid Heber · Navajo County |
839 | 5 | 2 | |
|
Pinal County Justice Complex Florence · Pinal County |
820 | 6 | 2 | |
|
Adoc Aspc Fort Grant Bonita · Graham County |
800 | 7 | 1 | |
|
Willow Beach Nps Willow Beach · Mohave County |
789 | 8 | 2 | |
|
Havasu Springs Resort Parker · La Paz County |
708 | 2 | 0 | |
|
Scua Lower Peridot County |
702 | 7 | 3 | |
|
Adaman Mutual Water Company Adaman · Maricopa County |
700 | 8 | 1 | |
|
Adjc Adobe Mountain School Phoenix · Maricopa County |
680 | 3 | 1 |
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.