Boulder Water Quality
Colorado
The tap water in Boulder, Colorado is served by 12 EPA-regulated water systems covering approximately 170,384 people. 8 health-based violations are on record, most recently for 0400 in 2022. Data source: EPA Safe Drinking Water Information System.
Drinking water in Boulder, Colorado is delivered through 12 EPA-regulated community water systems serving an estimated 170,384 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 Boulder shows 8 total violations across all 12 systems, of which 8 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 0400, 5000, 2456. 10 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 |
|---|---|---|---|
| BOULDER CITY OF | 166,080 | 2 | Health |
| PINE BROOK HILLS WD | 1,100 | 0 | Clean |
| MILE HI WATER INC HAULER | 1,000 | 4 | Health |
| BASELINE WD | 820 | 0 | Clean |
| SHANNON WSD | 450 | 0 | Clean |
| EAST BOULDER COUNTY WD | 300 | 0 | Clean |
| LEFTHAND WSD LAKE PINES | 250 | 0 | Clean |
| GOLDEN POND VILLAGE MHP | 135 | 0 | Clean |
| SPRING VALLEY MUTUAL WA | 100 | 2 | Health |
| PINE LAKE VILLAGE | 65 | 0 | Clean |
| DEER RUN MOBILE HOME COMMUNITY | 49 | 0 | Clean |
| 1610 LLC (WILLOW MANOR APTS) | 35 | 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 |
|---|---|
| 0400 | 2022-07-01 |
| 0400 | 2022-07-01 |
| 0400 | 2021-12-01 |
| 5000 | 2018-12-27 |
| 5000 | 2018-02-08 |
| 2456 | 2017-07-01 |
| 2456 | 2017-04-01 |
| 0400 | 2015-09-01 |
TRI Facilities in Boulder
| Facility | Total Releases |
|---|---|
| Micro Motion Inc. | 202.5K lbs |
| Corden Pharma Colorado Inc | 136.3K lbs |
| Corden Pharma Colorado Sterling Drive | 14.5K lbs |
| Agilent Technologies Boulder Co | 4.0K lbs |
| Dieterich Standard Inc | 1.4K lbs |
| National Institute of Standard&technology Boulder | 27 lbs |
| Smyrna Ready Mix Concrete LLC - Valmont Ready Mix | 2 lbs |
| Arcosa Esc Boulder | 1 lbs |
| Mks Instruments Inc Hps Pro Ducts Div | 0 lbs |
| Boulder Ready-Mix | 0 lbs |
Frequently Asked Questions
Is Boulder, Colorado water safe to drink? ▼
How many water violations does Boulder have? ▼
What contaminants were found in Boulder water? ▼
How many water systems serve Boulder? ▼
Where does Boulder get its drinking water? ▼
Are there pollution sources near Boulder? ▼
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.