Pioneer Water Service

PWSID: MT0004226

System Details

Population Served900
Service Connections1
Water SourceSurface Water Purchased
System TypeCommunity Water System
OwnerPrivate
StatusActive
CityBillings
Zip Code59101

Areas Served

  • Billings, Yellowstone County

Lead & Copper Testing

ContaminantLevelEPA Action LevelStatus
Lead (90th percentile)0.0020 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0002 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0000 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0000 mg/L0.015 mg/LBelow Action Level

Violation History (15 total)

ContaminantViolationDateHealth-BasedStatus
2024-10-01Returned to Compliance
2021-12-30Returned to Compliance
2021-07-01Returned to Compliance
2021-07-01Returned to Compliance
2020-07-01Returned to Compliance
2019-07-01Returned to Compliance
2018-06-01 MajorReturned to Compliance
2017-07-01 MajorReturned to Compliance
2012-10-01Returned to Compliance
2012-07-01Returned to Compliance
2006-07-01Returned to Compliance
2005-07-01Returned to Compliance
2004-01-01Returned to Compliance
2003-07-01Returned to Compliance
2002-07-01Returned to Compliance