Nitrite violations in Arizona
28 active public water systems in Arizona had a Nitrite violation in the past three years, 1 of them in the latest quarter of EPA's data. What Nitrite is and why it matters.
Systems with a Nitrite violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lively Shopping Center Chino Valley · Yavapai County |
121 | 2 | 0 | |
|
Kayenta Ntua Kayenta · County |
3,844 | 2 | 1 | |
|
Many Farms Community School Bia Many Farms · County |
1,506 | 4 | 1 | |
|
Kayenta Sandstone Housing Kayenta · County |
1,375 | 5 | 1 | |
|
Chilchinbeto Ntua Chilchinbeto · County |
1,276 | 3 | 1 | |
|
Chinle High School Chinle High School · County |
975 | 4 | 2 | |
|
Greasewood Springs Community Boarding School Bia Lower Greasewood · County |
720 | 7 | 3 | |
|
Ganado Public Schools Ganado · County |
684 | 4 | 1 | |
|
St Michael Indian School St. Michaels · County |
585 | 5 | 1 | |
|
Kayenta Community Boarding School Bia Kayenta · County |
500 | 3 | 1 | |
|
Dilcon Community Boarding School Bia Dilcon · County |
473 | 5 | 1 | |
|
Kaibab Village Kaibab Village · County |
407 | 4 | 0 | |
|
Kaibeto (upper) Boarding School Bia Kaibeto · County |
400 | 2 | 0 | |
|
Rough Rock Community High School Bia Rough Rock · County |
350 | 4 | 2 | |
|
Teec Nos Pos Community Boarding School Bia Teec Nos Pos · County |
300 | 2 | 0 | |
|
Leupp Contract Boarding School Bia Leupp · County |
250 | 3 | 0 | |
|
Rocky Ridge Boarding School Bia Dinnebito · County |
250 | 4 | 3 | |
|
Nazlini Community Boarding School Bia Nazlini · County |
230 | 2 | 1 | |
|
Chinle Usd 24 Administration Center Chinle · County |
220 | 5 | 3 | |
|
Wide Ruins Community Boarding School Bia Wide Ruins · County |
215 | 4 | 1 | |
|
Pilot Travel Centers #1212 Salome · La Paz County |
200 | 1 | 0 | |
|
Cottonwood Day School Bia Cottonwood · County |
185 | 3 | 0 | |
|
Kinlichee Community School Bia Kinlichee · County |
174 | 5 | 2 | |
|
Hunters Point Boarding School Bia Hunters Point · County |
173 | 7 | 1 | |
|
Pine Springs Day School Bia Houck, North Of · County |
122 | 4 | 2 | |
|
Kinlichee Staff Housing Bia Kinlichee · County |
80 | 5 | 1 | |
|
Sure Stay Water System Chambers · Apache County |
75 | 3 | 2 | |
|
Wayside Inn RV Park Wenden · La Paz County |
70 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrite, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrite 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.