Denver Water Quality
Colorado
The tap water in Denver, Colorado is served by 54 EPA-regulated water systems covering approximately 1,376,281 people. 179 health-based violations are on record, most recently for 1005 in 2025. Data source: EPA Safe Drinking Water Information System.
Drinking water in Denver, Colorado is delivered through 54 EPA-regulated community water systems serving an estimated 1,376,281 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
The SDWIS record for Denver shows 179 total violations across all 54 systems, of which 179 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 1005, 5200, 4109, 4010, 0400 and 5 others. 38 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Colorado drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| DENVER WATER BOARD | 1,287,000 | 0 | Clean |
| CRESTVIEW WSD | 23,756 | 0 | Clean |
| CHERRY CREEK VALLEY WSD | 22,000 | 0 | Clean |
| NORTH WASHINGTON STREET WSD | 14,500 | 1 | Health |
| ADVENIR FRENCH QUARTER | 3,447 | 1 | Health |
| NORTH PECOS WSD | 2,500 | 0 | Clean |
| EASTERN ADAMS CO MD | 2,485 | 0 | Clean |
| WEST OLIVE ESTATES | 1,850 | 2 | Health |
| PALMS OF ARCHER | 1,092 | 1 | Health |
| NORTH LINCOLN WSD | 1,000 | 1 | Health |
| NORTHWEST PINES MOBILE HOME COMMUNITY | 990 | 0 | Clean |
| FSI GREEN PARK SOUTH PROPERTY LLC | 966 | 0 | Clean |
| PINEWOOD ON THE LAKE MHP | 950 | 0 | Clean |
| CRANBERRY LAKE MHC | 820 | 0 | Clean |
| MCDONALD FARMS ENTERPRISES INC | 772 | 0 | Clean |
| SPRING HILL MHP | 764 | 1 | Health |
| YANKEE SPRINGS MEADOWS | 710 | 31 | Health |
| MASON MANOR | 630 | 5 | Health |
| BEACH MHP | 624 | 0 | Clean |
| DUTCH HILLS | 620 | 0 | Clean |
| FOUR SEASONS MOBILE HOME PARK | 600 | 0 | Clean |
| TERRACE HEIGHTS | 548 | 0 | Clean |
| BURT ESTATES MHC | 543 | 0 | Clean |
| RAINTREE ESTATES | 489 | 0 | Clean |
| HIGH CLIFF ESTATES | 448 | 0 | Clean |
| GROVELAND MANOR | 435 | 2 | Health |
| HOLLY HILLS MHC | 435 | 0 | Clean |
| ALEDO MOBILE HOME PARK | 423 | 1 | Health |
| LAMPLIGHTER MOBILE HOME PARK | 420 | 0 | Clean |
| OAK LANE MHC | 388 | 0 | Clean |
| CANTERBURY ESTATES MHP | 350 | 0 | Clean |
| CAPITAL CROSSINGS | 345 | 0 | Clean |
| YES SOUTHGATE, LLC | 330 | 0 | Clean |
| IMPERIAL MHC | 328 | 0 | Clean |
| OLD ORCHARD ESTATES | 296 | 6 | Health |
| MEADOW STREAMS ESTATES | 293 | 15 | Health |
| THE MEADOWS | 238 | 0 | Clean |
| COUNTRY ACRES MHP (LA SALLE COUNTY) | 222 | 104 | Health |
| UNION PACIFIC RAILROAD CO.-KEENE WATER | 208 | 0 | Clean |
| TIMBERLAND MHC | 200 | 5 | Health |
| CRESTWOOD ESTATES | 140 | 0 | Clean |
| MEADOWOOD VILLAGE MHP | 125 | 0 | Clean |
| FOXHILL MD | 123 | 0 | Clean |
| PLEASANT VIEW ESTATES | 122 | 0 | Clean |
| SUBURBAN ESTATES MHP | 115 | 0 | Clean |
| COUNTRY HOMES LAND CO | 100 | 0 | Clean |
| PINON PINES PROPERTY LLC | 100 | 0 | Clean |
| CASTLECOMB WATER SYSTEM | 93 | 0 | Clean |
| EXCELL LAWSON VILLAGE | 90 | 1 | Health |
| DEEP CREEK CREEDE HAVEN | 86 | 0 | Clean |
| VALLEY VISTA ESTATES | 51 | 0 | Clean |
| VALLI HI MHP | 50 | 2 | Health |
| HARVEST ESTATES (FORMERLY BILLS MHP) | 40 | 0 | Clean |
| DEEP CREEK MOUNTAIN VALLEY ESTATES | 31 | 0 | Clean |
Does this city have health-based water violations?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 1005 | 2025-07-01 |
| 1005 | 2025-04-01 |
| 5200 | 2025-02-01 |
| 1005 | 2025-01-01 |
| 1005 | 2025-01-01 |
| 1005 | 2025-01-01 |
| 1005 | 2025-01-01 |
| 1005 | 2025-01-01 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 1005 | 2024-10-01 |
| 1005 | 2024-10-01 |
| 1005 | 2024-10-01 |
| 1005 | 2024-10-01 |
| 4109 | 2024-10-01 |
| 4109 | 2024-10-01 |
| 4109 | 2024-10-01 |
| 4010 | 2024-10-01 |
| 4010 | 2024-10-01 |
| 4010 | 2024-10-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-07-01 |
| 1005 | 2024-04-01 |
| 1005 | 2024-04-01 |
| 1005 | 2024-04-01 |
| 1005 | 2024-04-01 |
| 1005 | 2024-04-01 |
| 1005 | 2024-04-01 |
| 4109 | 2024-04-01 |
| 4109 | 2024-04-01 |
| 4109 | 2024-04-01 |
| 4010 | 2024-04-01 |
| 4010 | 2024-04-01 |
| 4010 | 2024-04-01 |
| 1005 | 2024-01-01 |
| 1005 | 2024-01-01 |
| 4109 | 2024-01-01 |
| 4109 | 2024-01-01 |
| 4109 | 2024-01-01 |
| 4109 | 2024-01-01 |
| 4010 | 2024-01-01 |
| 4010 | 2024-01-01 |
| 4010 | 2024-01-01 |
TRI Facilities in Denver
| Facility | Total Releases |
|---|---|
| Wright & McGill Co | 349.9K lbs |
| Univar Solutions-Denver West | 160.4K lbs |
| Kroger Mountain View Foods | 58.6K lbs |
| Denver Metal Finishing | 35.3K lbs |
| US Department of the Treasury US Mint Denver | 15.8K lbs |
| General Shale Brick Inc Plant #60 | 5.4K lbs |
| Koppers Inc (denver Co) | 5.0K lbs |
| B&b Blending LLC | 4.5K lbs |
| Owens Corning Roofing & Asphalt LLC | 2.9K lbs |
| Holcim Wcr Inc Bannock Ready Mix Plant | 2.5K lbs |
Frequently Asked Questions
Is Denver, Colorado water safe to drink? ▼
How many water violations does Denver have? ▼
What contaminants were found in Denver water? ▼
How many water systems serve Denver? ▼
Where does Denver get its drinking water? ▼
Are there pollution sources near Denver? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.