NORTH WASHINGTON STREET WSD

DENVER, CO · ~14,500 people served

Check your exact address → DENVER overview

100

Excellent

PurityRadar safety score

PWSID

CO0101105

State

Colorado

City

DENVER

Population served

14,500

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2022. Official EPA record →

Other · EPA contaminant 7500 began Jul 2022 Resolved

Treatment technique · EPA contaminant 0400 health-based began May 2019 Resolved

Recent enforcement actions

State action · SOX Aug 2022
State action · SIA Jul 2022
State action · SIF Sep 2019
State action · SOX Aug 2019
State action · SIE Aug 2019
State action · SIA Aug 2019

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

4 stations · latest Dec 2025

70.3 · max 1,710 ug/L · 824

Copper

3 stations · latest Dec 2025

3.1 · max 23.3 ug/L · 818

Lead

4 stations · latest Dec 2025

0.4 · max 18.4 ug/L · 760

Fluoride

4 stations · latest Dec 2025

0.741 · max 1.46 mg/L · 415

Arsenic

4 stations · latest Dec 2025

0.6 · max 2.7 ug/L · 404

Nitrate

4 stations · latest Dec 2025

2.15 · max 4.42 mg/L · 191

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system CO0101105 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.