Public Water Partners

MOUNTAIN HOME, ID · Elmore County

MOUNTAIN HOME, CITY OF Water System

Consumer Confidence Report status

MOUNTAIN HOME, CITY OF must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for MOUNTAIN HOME, CITY OF that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Idaho’s official records. Always confirm current status with Idaho before making decisions based on this information.

System facts

System ID (PWSID)
ID4200032
System type
Community Water System
Population served
14,651
Service connections
5,842
Ownership
local government
Water source
groundwater (wells)

MOUNTAIN HOME, CITY OF is among the 18 largest community water systems in Idaho, serving 14,651 people from groundwater.

As of August 1, 2026, its federal record holds 46 entries between 2008 and 2024, of which 1 remains open; none are health-based.

All 46 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, volatile organic chemicals, and inorganic chemicals.

Violation history

  • LSL Reporting

    —

    LEAD AND COPPER RULE REVISIONS

    October 17, 2024 – January 23, 2025

    Resolved

  • Monitoring, Source Water (GWR)

    —

    E. COLI

    July 22, 2024

    Unaddressed

  • Monitoring, Regular

    —

    ETHYLENE DIBROMIDE

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Picloram

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Dinoseb

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Hexachlorocyclopentadiene

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Picloram

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    LASSO

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Heptachlor

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Total Polychlorinated Biphenyls (PCB)

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Endothall

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Picloram

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Atrazine

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Benzo(a)pyrene

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) phthalate

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Heptachlor epoxide

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Pentachlorophenol

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    BHC-GAMMA

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Dalapon

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Endothall

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Di(2-ethylhexyl) adipate

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Simazine

    January 1, 2023 – December 31, 2025

    Archived

  • Monitoring, Regular

    —

    Endothall

    October 1, 2021 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Xylenes, Total

    October 1, 2021 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    o-Dichlorobenzene

    October 1, 2021 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    January 1, 2021 – December 31, 2021

    Resolved

  • Monitoring, Regular

    —

    Nitrate

    October 1, 2020 – December 31, 2020

    Resolved

  • Monitoring, Regular

    —

    Carbofuran

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    2,4-D

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    2,4,5-TP

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    OXAMYL

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Glyphosate

    January 1, 2014 – December 31, 2016

    Resolved

  • Monitoring, Regular

    —

    Radium-226

    July 1, 2008 – September 30, 2008

    Resolved

Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yetArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is MOUNTAIN HOME, CITY OF required to publish a Consumer Confidence Report?

Yes. MOUNTAIN HOME, CITY OF is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MOUNTAIN HOME, CITY OF’s next Consumer Confidence Report due?

MOUNTAIN HOME, CITY OF’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does MOUNTAIN HOME, CITY OF have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show 1 item for MOUNTAIN HOME, CITY OF that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

SONNENTAG, DAVID

208-587-2108

MOUNTAIN HOME, ID 83647