Water quality · ZIP 81611
Water quality in Aspen, CO
ZIP 81611 is in Pitkin County, Colorado. The largest community water system EPA lists there, ASPEN CITY OF (serving about 31,100 people), reported no health-based violations in the last 3 years. This is the utility's federal record, not a test of the water at any address.
Pitkin County, Colorado · EPA SDWIS
ASPEN CITY OF
PWSID CO0149122 · population served 31,100 · surface water
- Health-based violations (3y)
- 0
- Total violations (3y)
- 4
- Most recent
- 2025-03-01 — MON
No health-based violations reported in the last 3 years for this system.
This is federal SDWIS reporting data for the community water system serving this county, not an address-level test result. Private well water is never covered by SDWIS. Where a county is served by multiple systems, this shows the one serving the most people.
Next step for your own home
What this page shows
The community water system serving this ZIP's county, its EPA SDWIS record, and any health-based violations in the last 3 years — shown above.
Source & refresh
EPA SDWIS. States report water-system records to EPA every quarter. The violation counts here cover the last 3 years. Primary source →
Limitations specific to this source
Where a county has several water systems, zipradar shows the one serving the most people and says how many others are on record; yours may be a different one. Private well water is not covered.
Colorado context
Radon Zone 1, wildfire on the Front Range
Colorado is one of the most uniformly Zone 1 radon states in the US. WUI wildfire risk concentrates along the Front Range from Boulder to Colorado Springs. Drinking water sourcing splits between Front Range water districts and Western Slope reclamation projects, each with distinct EPA SDWIS compliance histories.
See Colorado state page for the full state-level rollup across all 12 dimensions.
Read more on water quality
Editorial deep-dives explaining the source data, its limits, and how to read it.
Flood zones explained — what AE, X, and VE actually mean
Plain-English guide to FEMA flood-zone codes (A, AE, AH, V, VE, X, X-shaded). What the 1% and 0.2% annual-chance zones mean for your property and your insurance.
EPA Radon Zones — what 1, 2, and 3 mean and when you should test
EPA classifies every US county into Zone 1 (high), Zone 2 (moderate), or Zone 3 (low) for radon. Plain-English guide to the classifications and at-home testing.
EPA AQI categories explained — what 0–50 Good through 301–500 Hazardous mean
Plain-English guide to the six EPA Air Quality Index categories: 0–50 Good, 51–100 Moderate, 101–150 Unhealthy for Sensitive Groups, 151–200 Unhealthy, 201–300 Very Unhealthy, 301–500 Hazardous — what each level means and who is at risk.
Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 Lead and Copper Rule Revisions (LCRR) require every US community water system to inventory and report lead service lines. Plain-English guide.
The other dimensions for ZIP 81611
Water quality is one of twelve public-records dimensions zipradar indexes per address. See the ZIP 81611 index for the other eleven — each with its own regulator, source and link:
All dimensions for Aspen, CO →Frequently asked questions
What is the water quality for ZIP 81611?
Pitkin County, Colorado (which covers ZIP 81611) is served by ASPEN CITY OF (EPA PWSID CO0149122), a community water system serving a reported population of 31,100. Health-based violations in the last 3 years: 0. This is federal SDWIS reporting data for the community water system serving this county, not an address-level test result. Private well water is never covered by SDWIS. Where a county is served by multiple systems, this shows the one serving the most people.
Where does the water quality data come from?
Source: EPA SDWIS. States report water-system records to EPA every quarter. The violation counts here cover the last 3 years. The original is at https://www.epa.gov/ground-water-and-drinking-water/safe-drinking-water-information-system-sdwis-federal-reporting.
What are the limitations of water quality data?
Where a county has several water systems, zipradar shows the one serving the most people and says how many others are on record; yours may be a different one. Private well water is not covered.
Is ZIP 81611 (Aspen) data current?
zipradar last checked this page against the source on 2026-09-24. States report water-system records to EPA every quarter. The violation counts here cover the last 3 years. The ZIP 81611 overview at /zip/81611/ lists the other topics zipradar covers for this ZIP.