Littleton Water Quality
Colorado
According to EPA SDWIS, Littleton, Colorado is served by 25 community water systems covering about 128,777 people. The same extract lists 11 health-based violation records, most recently coded 0400 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Littleton, Colorado is delivered through 25 EPA-regulated community water systems serving an estimated 128,777 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 11 violation records across the 25 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Stage 1 Disinfectants and Disinfection Byproducts Rule, LEAD AND COPPER RULE REVISIONS, Long Term 2 Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule. 10 TRI-reporting industrial facilities are also located within the city limits.
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 |
|---|---|---|---|
| SOUTHWEST METROPOLITAN WSD | 48,648 | 0 | Clean |
| PLATTE CANYON WSD | 19,485 | 0 | Clean |
| ROXBOROUGH WSD | 13,765 | 3 | Health |
| KEN CARYL WSD | 12,000 | 0 | Clean |
| LAKEHURST WSD | 12,000 | 0 | Clean |
| STERLING RANCH CAB | 11,501 | 0 | Clean |
| EAGLE RIVER VILLAGE MHP | 1,500 | 0 | Clean |
| FOXRIDGE FARMS MHP | 1,440 | 0 | Clean |
| NORTHBROOK VILLAS MHC | 1,052 | 0 | Clean |
| BOW MAR WSD | 899 | 0 | Clean |
| ROXBOROUGH NW DOUGLAS COUNTY | 860 | 0 | Clean |
| COLUMBINE LAKES HOA | 843 | 0 | Clean |
| RIVER VALLEY MHC | 803 | 0 | Clean |
| SKYLINE VILLAGE MOBILE HOME PK | 700 | 2 | Health |
| FRANKLIN MOBILE HOME PARK | 513 | 0 | Clean |
| EL MORRO MOBILE ESTATES | 504 | 3 | Health |
| LAKE FORK MHP | 487 | 0 | Clean |
| WESTERN HILLS MHP | 450 | 0 | Clean |
| REDHILL FOREST POMWACA | 388 | 0 | Clean |
| THE RINCON WATER COOPERATIVE | 276 | 0 | Clean |
| NORTHWAY MHP | 250 | 2 | Health |
| CEDAR VILLAGE MHP | 130 | 0 | Clean |
| NORTH BREEZE MHP | 123 | 1 | Health |
| W BAR K MOBILE HOME PARK | 110 | 0 | Clean |
| VALLEY AT WINTER PARK WD | 50 | 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 |
|---|---|---|
| EL MORRO MOBILE ESTATES | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-11-13 |
| EL MORRO MOBILE ESTATES | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-11-13 |
| EL MORRO MOBILE ESTATES | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-11-13 |
| NORTH BREEZE MHP | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| NORTHWAY MHP | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-02-22 |
| NORTHWAY MHP | Stage 1 Disinfectants and Disinfection Byproducts Rule | 2024-02-22 |
| SKYLINE VILLAGE MOBILE HOME PK | Long Term 2 Enhanced Surface Water Treatment Rule | 2023-09-03 |
| SKYLINE VILLAGE MOBILE HOME PK | Long Term 2 Enhanced Surface Water Treatment Rule | 2023-09-03 |
| ROXBOROUGH WSD | Surface Water Treatment Rule | 2020-06-01 |
| ROXBOROUGH WSD | Surface Water Treatment Rule | 2020-06-01 |
| ROXBOROUGH WSD | Surface Water Treatment Rule | 2020-06-01 |
What are Littleton's health-based records for?
Littleton's health-based violation records carry 4 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 |
|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule | 5 | 2 |
| Surface Water Treatment Rule | 3 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 2 | 1 |
| Lead and Copper Rule Revisions | 1 | 1 |
TRI Facilities in Littleton
| Facility | Total Releases |
|---|---|
| Unicircuit Inc | 25.2K lbs |
| Lockheed Martin Space | 1.0K lbs |
| Holcim Wcr Inc Riverview Ready Mix Plant | 298 lbs |
| Ttm Technologies | 73 lbs |
| Oldcastle Precast Inc | 49 lbs |
| Smyrna Ready Mix Concrete LLC - Titan Ready Mix | 4 lbs |
| Foley Products Co - Littleton | 0 lbs |
| Burnco Colorado LLC - Titan | 0 lbs |
| Best Block - Denb | 0 lbs |
| Elkhart Plastics Inc. | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Littleton, Colorado? ▼
How many water violations does Littleton have in this EPA extract? ▼
What contaminants were found in Littleton water? ▼
How many water systems serve Littleton? ▼
Where does Littleton get its drinking water? ▼
Are there pollution sources near Littleton? ▼
How does Littleton compare in Colorado?
Of the 313 Colorado places with at least one community water system on file, Littleton ranks #7 by number of systems (25).
Either side of it: Glenwood Springs (32), Cedaredge (28), Wheat Ridge (25), Carbondale (18)
About This Data
Figures here are the current EPA SDWIS extract joined to the 25 community water systems whose service area lists Littleton, 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.