Water Quality in 80301 — Boulder, CO
EPA data for BOULDER CITY OF
Data source: U.S. Environmental Protection Agency (EPA) SDWIS Last verified: March 16, 2026
Your Water System
ZIP code 80301 in Boulder, Colorado is served by BOULDER CITY OF (EPA ID: CO0107152). This system provides water to approximately 166,080 people from surface water sources.
There are 10 community water systems serving this area.
Lead & Copper in Your Water
No Lead & Copper Rule sampling data available for systems serving this ZIP code.
Violation Summary
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| August 17, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| July 9, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| April 9, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| January 9, 2025 | Lead and Copper Rule | Monitoring | Unresolved |
| October 1, 2024 | Fecal Coliform | Monitoring | Unresolved |
| October 1, 2024 | Fecal Coliform | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for water systems serving this ZIP code:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 6 | No |
| E. coli | Microbiological | 3 | No |
| Surface Water Treatment Rule | Treatment Technique | 3 | No |
| Chlorine residual | Disinfectant | 3 | Yes |
| Fecal Coliform | Microbiological | 2 | No |
Need help with your water quality?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| BOULDER CITY OF | CO0107152 | 166,080 | Surface water |
| PINE BROOK HILLS WD | CO0107610 | 1,100 | Surface water |
| MILE HI WATER INC HAULER | CO0107510 | 1,000 | Surface water |
| BASELINE WD | CO0107135 | 820 | Surface water |
| VISTA VILLAGE MHP | CO0107810 | 750 | Surface water |
What You Can Do
- Request your water system’s Consumer Confidence Report (CCR) — Your utility is required to publish this annually
- Consider a home water test — Independent testing can reveal issues in your specific plumbing
- Install a certified water filter — NSF-certified filters can address specific contaminants
- Contact your water provider — Ask about current treatment and any ongoing remediation
Need help with water testing or filtration?
Call to get connected with a local professional in your area.
Call (855) 384-4856This is a free service. You will be connected with an independent service provider.
Other Water Quality Reports in Colorado
- 80001 (Arvada) — 16 violations
- 80010 (Aurora) — 14 violations
- 80020 (Broomfield)
- 80022 (Commerce City)
- 80026 (Lafayette) — 19 violations
- 80027 (Louisville)
- 80030 (Westminster) — 67 violations
- 80033 (Wheat Ridge) — 1 violation
- 80101 (Agate) — 124 violations
- 80102 (Bennett) — 11 violations
- 80103 (Byers) — 1 violation
- 80104 (Castle Rock) — 30 violations
- 80110 (Englewood) — 9 violations
- 80120 (Littleton)
- 80134 (Parker) — 22 violations
- 80201 (Denver) — 10 violations
- 80401 (Golden) — 2 violations
- 80437 (Evergreen) — 148 violations
- 80477 (Steamboat Springs) — 141 violations
- 80497 (Silverthorne) — 6 violations
Nearby Water Quality Reports
- 80027 (Louisville) — 6 mi
- 80026 (Lafayette) — 7 mi — 19 violations
- 80501 (Longmont) — 11 mi — 4 violations
- 80020 (Broomfield) — 12 mi
- 80030 (Westminster) — 18 mi — 67 violations
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for BOULDER CITY OF (CO0107152) on EPA.gov.
Frequently Asked Questions
Is the tap water in 80301 safe to drink?
Boulder’s water system has recorded 3 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
Where does 80301’s water come from?
The primary water source for this area is surface water. BOULDER CITY OF serves approximately 166,080 people.
How can I get my water tested?
Contact your local water utility for a free water quality report, or hire a certified lab for independent home water testing. The EPA recommends testing annually if you use a private well.
Does 80301 have lead in the water?
No Lead and Copper Rule sampling data is currently available in EPA records for water systems serving ZIP code 80301. If you are concerned about lead, contact your water utility or have your tap water independently tested.
What is the radon risk in 80301?
Radon zone data is not available for ZIP code 80301. The EPA recommends testing all homes for radon regardless of location, as radon levels can vary significantly even within the same neighborhood.