Fluoride violations in Arizona
16 active public water systems in Arizona had a Fluoride violation in the past three years, 6 of them in the latest quarter of EPA's data. What Fluoride is and why it matters.
Systems with a Fluoride violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Scua Bylas Bylas · County |
3,160 | 12 | 3 | |
|
Hopi High School Bia Hopi High School · County |
1,005 | 11 | 4 | |
|
Hopi Veterans Center Hopi Veterans Center · County |
388 | 3 | 1 | |
|
San Simon Dwid San Simon · Cochise County |
312 | 6 | 2 | |
|
GW Saguaro Dist Water CO Rincon Tucson · Pima County |
209 | 3 | 0 | |
|
CS Citrus Park Water Company Tacna · Yuma County |
102 | 6 | 1 | |
|
GW Santa Cruz Water CO Maricopa · Pinal County |
84,000 | 7 | 0 | |
|
Bullhead City Mohave Bullhead City · Mohave County |
36,330 | 13 | 1 | |
|
Colorado River Regional Water System County |
3,476 | 6 | 0 | |
|
Gila Bend Town of Buckeye · Maricopa County |
1,922 | 7 | 0 | |
|
Pomerene Dwid Pomerene · Cochise County |
1,618 | 5 | 0 | |
|
Lower Moencopi Spring Source Lower Moencopi · County |
465 | 12 | 3 | |
|
Dateland Public Service CO Dateland · Yuma County |
319 | 6 | 0 | |
|
Rio Mercado Water Tucson · Pima County |
266 | 5 | 0 | |
|
Cienega Water Company INC Parker · La Paz County |
108 | 8 | 2 | |
|
Desert Sky Dwid Salome · La Paz County |
72 | 4 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Fluoride, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Fluoride 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. Retrieved from ECHO on Oct 11, 2026.