Keystone

PWSID: SD4601082

System Details

Population Served349
Service Connections249
Water SourceGroundwater
System TypeCommunity Water System
OwnerLocal Government
StatusActive
CityKeystone
Zip Code57751

Areas Served

  • Keystone, Pennington County, 57751

Lead & Copper Testing

ContaminantLevelEPA Action LevelStatus
Lead (90th percentile)0.0070 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0040 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0030 mg/L0.015 mg/LBelow Action Level
Lead (90th percentile)0.0010 mg/L0.015 mg/LBelow Action Level

Violation History (4 total)

ContaminantViolationDateHealth-BasedStatus
2019-01-01 MajorReturned to Compliance
2019-01-01 MajorReturned to Compliance
2019-01-01 MajorReturned to Compliance
2010-10-01Returned to Compliance