County · Colorado
Denver County, Colorado: drinking water records
This overview covers 31 ZIP codes and 6 community water systems in Denver County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Advenir French Quarter CO0116104 | 3,447 | 120 | 0 | 1 | 0 ppb |
| Denver Water Board CO0116001 | 1,287,000 | 450 | 0 | 0 | 3.1 ppb |
| Cherry Creek Valley WSD CO0116175 | 22,000 | 0 | 0 | 0 | 9 ppb |
| Buckhorn Ranch Estates MHP IL0310070 | 702 | 0 | 0 | 0 | 0 ppb |
| Oak Lane MHC IL0311900 | 388 | 0 | 0 | 0 | 0 ppb |
| Aspen Terrace Mobile Park CO0116122 | 200 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Denver County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.