Drinking Water Compliance OS

BOISE, ID · Ada County

LARSON SUBD Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of December 17, 2004. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Ada County, ID.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 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)
ID4010086
System type
Community Water System
Population served
24
Service connections
9
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    August 1, 1991 – August 31, 1991

    Archived
  • Monitoring, Repeat Major (TCR)

    Coliform (TCR)

    August 1, 1991 – August 31, 1991

    Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

Not on record

208-376-5019

BOISE, ID 83704