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City water profile

Durango water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Durango, Colorado.

Median indexed hardness

147PPM

3 indexed ZIPs

Range 145.5–149 PPM

State comparison
88 PPM above
State hardness rank
#25 of 58
Matched utilities
2
Active health records
1

City summary

What the indexed records say

Durango has 3 published ZIP profiles across La Plata County. The indexed median is 147 PPM, compared with 59 PPM across Colorado.

Among the 58 Coloradocities with an indexed median, Durango ranks #25from highest to lowest. Across all 161 state ZIP profiles, available estimates run from 13.7to 829 PPM.

The 145.5–149 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard3 ZIPs
Very hard0 ZIPs

3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
5.1 miles
Profiles with evidence
3/3

Confidence labels

High: 0Moderate: 3Low: 0

Observation window: Feb 16, 2016 to Apr 16, 2026.

ZIP directory

Water reports in Durango

Open a ZIP for site-level provenance and measurements.

ZIP code

81301

Hard

147 PPM

Nearest site
5.1 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

81303

Hard

149 PPM

Nearest site
1.6 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

81326

Hard

145.5 PPM

Nearest site
12.4 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Durango City Of

PWSID CO0134150

Surface water
System population served
33,787
Last reported
Jun 17, 2026

A municipal system, in-state city, and served county all agree with this Census ZCTA.

Escalante Village

PWSID CO0134255

Surface water
System population served
62
Last reported
Jun 17, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Public NoticeCO0134255Mar 30, 2026Unaddressed
Revised Total Coliform RuleCO0134255Mar 1, 2026Archived
Surface Water Treatment RuleCO0134255Mar 1, 2026Archived
Stage 1 Disinfectants and Disinfection Byproducts RuleCO0134255Feb 21, 2026Unaddressed · health-based
Revised Total Coliform RuleCO0134255Feb 1, 2026Archived
Surface Water Treatment RuleCO0134255Feb 1, 2026Archived
ChlorineCO0134255Jan 1, 2026Archived
Revised Total Coliform RuleCO0134255Jan 1, 2026Archived
Surface Water Treatment RuleCO0134255Jan 1, 2026Archived
Surface Water Treatment RuleCO0134150May 1, 2023Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Durango

Is the water hard?

The indexed city median is 147 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.