Tapcensus

Total Haloacetic Acids (HAA5) violations in Idaho

60 active public water systems in Idaho had a Total Haloacetic Acids (HAA5) violation in the past three years, 6 of them in the latest quarter of EPA's data. What Total Haloacetic Acids (HAA5) is and why it matters.

Health effects: Dichloroacetic acid is a probable human carcinogen (Group B2). Long-term exposure to trichloroacetic acid may also increase cancer risk. Animal studies show liver, kidney, and reproductive effects at high doses.

Systems with a Total Haloacetic Acids (HAA5) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Pleasant Acres Mobile Home Park
Elmore County
85 3 2
Hoo Doo Harvard Water and Sewer Dist
Latah County
82 5 1
Oden View Estates Improvement Assn
Bonner County
64 3 0
Red Rock Water LLC
Nez Perce County
60 5 1
Clear Lake Ranch P U D
Gooding County
54 6 2
Pioneer Mobile Home Park LLC
Homedale · Owyhee County
53 4 1
Coeur D'alene Sub-Agency
Plummer · County
50 2 0
Curley Creek Water Assn
Boundary County
50 2 0
Lakeview Water District
Clearwater County
45 3 1
Lazy River Mobile Home Park 1
Payette County
41 4 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 Idaho 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.