Centennial Water Quality
Colorado
According to EPA SDWIS, Centennial, Colorado is served by 12 community water systems covering about 106,959 people. The same extract lists 29 health-based violation records, most recently coded 5200 in 2026. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Centennial, Colorado is delivered through 12 EPA-regulated community water systems serving an estimated 106,959 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.
PlainEnviro's health-based SDWIS extract shows 29 violation records across the 12 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Combined Radium (-226 and -228).
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. 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 |
|---|---|---|---|
| SOUTHGATE WSD | 55,000 | 0 | Clean |
| ARAPAHOE CNTY WWWA | 31,000 | 0 | Clean |
| WILLOWS WD | 19,000 | 0 | Clean |
| ELKHORN RANCH MD NO 1 | 530 | 0 | Clean |
| APPLE & CHERRY RIDGE VILLAGE | 350 | 1 | Health |
| THE ASPENS MOBILE HOME VILLAGE | 318 | 1 | Health |
| CHAPARRAL VILLAGE MHP | 303 | 0 | Clean |
| K & K MANUFACTURED HOME COMMUNITY | 180 | 0 | Clean |
| MEADOWLARK MOBILE HOME PARK | 125 | 1 | Health |
| NEBRASKAN MANUFACTURED HOME COMMUNITY | 108 | 0 | Clean |
| MOUNTAIN SHADOWS MOBILE ESTATES | 45 | 26 | Health |
| JOINT WATER PURIFICATION PLANT | 0 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| MEADOWLARK MOBILE HOME PARK | LEAD AND COPPER RULE REVISIONS | 2026-01-02 |
| APPLE & CHERRY RIDGE VILLAGE | LEAD AND COPPER RULE REVISIONS | 2026-01-02 |
| THE ASPENS MOBILE HOME VILLAGE | LEAD AND COPPER RULE REVISIONS | 2026-01-02 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2015-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2015-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2014-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2014-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2013-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2013-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2011-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2011-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2010-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2010-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2009-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2009-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-10-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-10-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-07-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-07-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-04-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-04-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2008-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-10-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-10-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-04-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-04-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-01-01 |
| MOUNTAIN SHADOWS MOBILE ESTATES | Combined Radium (-226 and -228) | 2007-01-01 |
What are Centennial's health-based records for?
Centennial's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Combined Radium (-226 and -228) | 26 | 1 |
| Lead and Copper Rule Revisions | 3 | 3 |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Centennial, Colorado? ▼
How many water violations does Centennial have in this EPA extract? ▼
What contaminants were found in Centennial water? ▼
How many water systems serve Centennial? ▼
Where does Centennial get its drinking water? ▼
How does Centennial compare in Colorado?
Of the 313 Colorado places with at least one community water system on file, Centennial ranks #16 by number of systems (12).
Either side of it: Boulder (13), Glendale (13), Fort Collins (12), Lafayette (12)
About This Data
Figures here are the current EPA SDWIS extract joined to the 12 community water systems whose service area lists Centennial, ranked against the 313 Colorado places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
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.