EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records

COUNTY WATER-SYSTEM LEDGER

Union, South Dakota

Compare active community water systems serving this county in EPA's public export. Systems can serve multiple places, so population totals may overlap.

Systems4active CWS · pop. 2,500+
Population served16,772reported total; may overlap
Current violation flag0.0%0 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Union

Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.

Water systemPopulation servedPrimary sourceCurrent export status
South Lincoln Rural Water SystemSD46008705,250Ground waterNo current violation flagged
Clay Rural Water SystemSD46006264,780Ground waterNo current violation flagged
Dakota Dunes CidSD46020933,700Purchased ground water under influence of surface water sourceNo current violation flagged
North Sioux CitySD46002263,042Ground waterNo current violation flagged

02 / SOURCE MIX

Ground water3 systems · 13,072 served
Purchased ground water under influence of surface water source1 systems · 3,700 served
How to read the population total

It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.