Total Haloacetic Acids (HAA5) violations in Arizona
212 active public water systems in Arizona had a Total Haloacetic Acids (HAA5) violation in the past three years, 18 of them in the latest quarter of EPA's data. What Total Haloacetic Acids (HAA5) is and why it matters.
Systems with a Total Haloacetic Acids (HAA5) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lake Havasu City of Lake Havasu City · Mohave County |
54,610 | 2 | 0 | |
|
San Luis City of San Luis · Yuma County |
39,705 | 4 | 1 | |
|
Florence Water Company Florence · Pinal County |
14,593 | 5 | 1 | |
|
Tolleson City of Tolleson · Maricopa County |
9,300 | 4 | 0 | |
|
Usaf Luke Air Force Base Litchfield Park · Maricopa County |
8,440 | 2 | 0 | |
|
Morenci Water Elec CO Main Morenci · Greenlee County |
4,078 | 5 | 0 | |
|
Adoc Eyman Unit Florence · Pinal County |
3,969 | 8 | 2 | |
|
Carefree Water Company Carefree · Maricopa County |
3,588 | 3 | 0 | |
|
Camp Verde School Dist 28 Camp Verde · Yavapai County |
1,810 | 4 | 3 | |
|
Cameron Trading Post Cameron · Coconino County |
1,270 | 8 | 1 | |
|
Adoc Florence Asp Florence · Pinal County |
1,001 | 8 | 4 | |
|
CS White Hills Water Company Unit 1 White Hills · Mohave County |
338 | 4 | 0 | |
|
CS White Hills Water Company Units 3 4 6 White Hills · Mohave County |
333 | 4 | 0 | |
|
Beaver Creek Store Beaver Creek · Yavapai County |
100 | 5 | 3 | |
|
Pine Water Association Dwid Pine · Gila County |
100 | 7 | 5 | |
|
Rio Verde RV Park Cottonwood · Yavapai County |
90 | 2 | 1 | |
|
Bonita Creek Water Company Payson · Gila County |
67 | 9 | 1 | |
|
Retaw Water Company Lakeside · Navajo County |
54 | 4 | 2 | |
|
Gilbert, Town of Gilbert · Maricopa County |
247,600 | 9 | 1 | |
|
Glendale City of Glendale · Maricopa County |
234,766 | 3 | 0 | |
|
GW Santa Cruz Water CO Maricopa · Pinal County |
84,000 | 7 | 0 | |
|
Town of Prescott Valley Prescott Valley · Yavapai County |
57,048 | 1 | 0 | |
|
Bullhead City Mohave Bullhead City · Mohave County |
36,330 | 13 | 1 | |
|
Foothills Water and Sewer LLC Yuma · Yuma County |
32,425 | 5 | 0 | |
|
Nogales City of Nogales · Santa Cruz County |
22,000 | 7 | 0 | |
|
Safford City of Safford · Graham County |
20,600 | 5 | 1 | |
|
Liberty Water Rio Rico Rio Rico · Santa Cruz County |
17,960 | 3 | 0 | |
|
Grand Canyon National Park Grand Canyon · Coconino County |
16,590 | 7 | 0 | |
|
Flowing Wells Irrigation District Tucson · Pima County |
16,000 | 6 | 1 | |
|
Eloy City of Eloy · Pinal County |
8,999 | 6 | 1 | |
|
Green Valley Dwid Green Valley · Pima County |
8,687 | 3 | 1 | |
|
Scua Upper Seven Mile County |
8,478 | 12 | 3 | |
|
Usmc Yuma Main System Yuma · Yuma County |
8,353 | 6 | 0 | |
|
Globe City of Globe · Gila County |
7,536 | 4 | 0 | |
|
Valley Pioneers Water Company INC Kingman · Mohave County |
6,263 | 4 | 0 | |
|
Snowflake Town of Snowflake · Navajo County |
5,590 | 4 | 0 | |
|
Metropolitan Dwid Diablo Village Tucson · Pima County |
5,542 | 3 | 0 | |
|
Ponderosa Dwid Pinetop · Navajo County |
5,375 | 3 | 0 | |
|
North Mohave Valley Bullhead City · Mohave County |
5,190 | 6 | 2 | |
|
Eagar Town of Eagar · Apache County |
4,590 | 5 | 1 | |
|
Cottonwood Municipal Water VV6 Cottonwood · Yavapai County |
4,518 | 2 | 0 | |
|
Metropolitan Dwid Hub Tucson · Pima County |
4,252 | 1 | 0 | |
|
Aspc Yuma Yuma · Yuma County |
4,197 | 4 | 0 | |
|
Town of Taylor Taylor · Navajo County |
4,190 | 7 | 2 | |
|
ST Johns City of Saint Johns · Apache County |
3,500 | 5 | 1 | |
|
City of Willcox Willcox · Cochise County |
3,236 | 6 | 0 | |
|
Scua Bylas Bylas · County |
3,160 | 12 | 3 | |
|
Desert Foothills Bullhead City · Mohave County |
3,091 | 6 | 1 | |
|
Tucson Medical Center Tucson · Pima County |
3,000 | 4 | 1 | |
|
Wellton Town of Wellton · Yuma County |
3,000 | 10 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Total Haloacetic Acids (HAA5), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Total Haloacetic Acids (HAA5) 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.