North Washington Street Water Supply District
EPA ID: CO0101105 · 14,500 people served · 69 ZIP codes
Even though North Washington Street Water Supply District accumulated 3 violations over five years, all have been formally resolved — the provider currently meets EPA standards for 14,500 people.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Stable · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 4 (2021) to 2 (2022). Violation counts have remained relatively steady.
Service Area Map
Coverage area for North Washington Street Water Supply District Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The North Washington Street Water Supply District serves a community with a median household income of $86,661 and an estimated 1,108,441 residents across its service area. Approximately 61% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
North Washington Street Water Supply District's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Denver County, Colorado rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 65th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Superfund Proximity Note: This service area ranks in the 78th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How North Washington Street Water Supply District compares to EPA limits
What This Means For You
Fecal Coliform at 2 presence exceeds the EPA maximum of presence.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 38 detections recorded. 8 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Colorado
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
North Washington Street Water Supply District (EPA ID: CO0101105) is a community water system in Colorado that serves approximately 14,500 people from surface water sources.
This system provides water to 69 ZIP codes across 1 community.
Average Home Safety Score: C (64/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| March 1, 2024 | Fecal Coliform | Monitoring | Resolved |
| January 1, 2024 | Combined Radium | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Fecal Coliform | Microbiological | 2 | No |
| Combined Radium | Radionuclides | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 80229 | 0.0039 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 3 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 66 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 69 ZIP codes:
80201 · 80202 · 80203 · 80204 · 80205 80206 · 80207 · 80208 · 80209 · 80210 80211 · 80212 · 80214 · 80215 · 80216 80217 · 80218 · 80219 · 80220 · 80221 80222 · 80223 · 80224 · 80225 · 80226 80227 · 80228 · 80229 · 80230 · 80231 80232 · 80233 · 80234 · 80235 · 80236 80237 · 80238 · 80239 · 80243 · 80244 80246 · 80247 · 80248 · 80249 · 80250 80251 · 80252 · 80256 · 80257 · 80259 80260 · 80261 · 80262 · 80263 · 80264 80265 · 80266 · 80271 · 80273 · 80274 80279 · 80280 · 80281 · 80290 · 80291 80293 · 80294 · 80295 · 80299
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for North Washington Street Water Supply District (CO0101105) on EPA.gov.
Frequently Asked Questions
Is North Washington Street Water Supply District water safe to drink?
North Washington Street Water Supply District has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does North Washington Street Water Supply District serve?
North Washington Street Water Supply District serves approximately 14,500 people across 69 ZIP codes in Colorado.
Where does North Washington Street Water Supply District get its water?
The primary water source is surface water.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
North Washington Street Water Supply District (EPA ID: CO0101105) — request the latest Consumer Confidence Report or ask about specific contaminants.