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

COUNTY WATER-SYSTEM LEDGER

Douglas, Colorado

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

Systems13active CWS · pop. 2,500+
Population served405,941reported total; may overlap
Current violation flag7.7%1 systems
Serious-violator flag0.0%0 systems

01 / SYSTEMS

Water systems serving Douglas

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

Water systemPopulation servedPrimary sourceCurrent export status
Castle Rock Town OfCO0118010110,298Surface waterNo current violation flagged
Highlands Ranch WsdCO0118015103,444Surface waterNo current violation flagged
Parker WsdCO011804075,949Surface waterNo current violation flagged
Meridian MdCO021801523,415Surface water purchasedNo current violation flagged
Stonegate MdCO011807615,295Surface water purchasedNo current violation flagged
Roxborough WsdCO011805513,765Surface waterNo current violation flagged
Pinery WwdCO011802512,901Surface water purchasedNo current violation flagged
Castle Pines North MdCO011800612,800Surface water purchasedNo current violation flagged
Sterling Ranch CabCO011872411,501Surface water purchasedNo current violation flagged
Cottonwood WsdCO011802010,867Surface water purchasedNo current violation flagged
Northern Douglas County WsdCO01180166,160Surface water purchasedNo current violation flagged
Castle Pines Village MdCO01180055,656Ground waterOther current violation flag
Perry Park WsdCO01180453,890Groundwater under influence of surface waterNo current violation flagged

02 / SOURCE MIX

Surface water4 systems · 303,456 served
Surface water purchased7 systems · 92,939 served
Ground water1 systems · 5,656 served
Groundwater under influence of surface water1 systems · 3,890 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.