Public Water Partners

HOLLISTER, ID · Twin Falls County

HOLLISTER CITY OF Water System

Consumer Confidence Report status

HOLLISTER 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 no open violations for HOLLISTER CITY OF.

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)
ID5420030
System type
Community Water System
Population served
220
Service connections
120
Ownership
local government
Water source
groundwater (wells)

HOLLISTER CITY OF is one of 969 community water systems in Idaho in the 500 or fewer people size category, serving 220 people from groundwater.

As of August 1, 2026, its federal record holds 5 entries between 1991 and 2015, all of which EPA lists as closed. Nothing has been added since 2015.

All 5 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 the Radionuclides and Revised Rad Rule, inorganic chemicals, and the Stage 1 Disinfectants and Disinfection Byproducts Rule.

Violation history

  • Monitoring, Regular

    —

    Nitrate

    April 1, 2015 – June 30, 2015

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    July 1, 2013 – September 30, 2013

    Resolved

  • Monitoring, Regular

    —

    Gross Alpha, Excl. Radon and U

    July 1, 2012 – September 30, 2012

    Resolved

  • Monitoring and Reporting (DBP)

    —

    TTHM

    July 1, 2011 – September 30, 2011

    Resolved

  • Monitoring, Routine Major (TCR)

    —

    Coliform (TCR)

    February 1, 1991 – February 28, 1991

    Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

Common questions

Is HOLLISTER CITY OF required to publish a Consumer Confidence Report?

Yes. HOLLISTER 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 HOLLISTER CITY OF’s next Consumer Confidence Report due?

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

Does HOLLISTER CITY OF have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show no open violations for HOLLISTER CITY OF.

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

CITY OF HOLLISTER

208-655-4220

HOLLISTER, ID 83301