City of Colusa

PWSID: CA0610002

System Details

Population Served6,447
Service Connections2,276
Water SourceGroundwater
System TypeCommunity Water System
OwnerLocal Government
StatusActive
CityColusa
Zip Code95932

Areas Served

  • Colusa, Colusa County

Lead & Copper Testing

ContaminantLevelEPA Action LevelStatus
Lead (90th percentile)0.0068 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0008 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0000 mg/L0.015 mg/LBelow Action Level

Violation History (9 total)

ContaminantViolationDateHealth-BasedStatus
2022-03-01Returned to Compliance
2022-03-01Returned to Compliance
2022-03-01Returned to Compliance
2022-01-01 MajorReturned to Compliance
2022-01-01 MajorReturned to Compliance
2022-01-01 MajorReturned to Compliance
2016-09-01 MajorReturned to Compliance
2016-09-01 MajorReturned to Compliance
2016-09-01 MajorReturned to Compliance