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City water profile

Montrose water quality

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

Median indexed hardness

235PPM

2 indexed ZIPs

Range 232.5–236.5 PPM

State comparison
176 PPM above
State hardness rank
#13 of 58
Matched utilities
4
Active health records
0

City summary

What the indexed records say

Montrose has 2 published ZIP profiles across Montrose County. The indexed median is 235 PPM, compared with 59 PPM across Colorado.

Among the 58 Coloradocities with an indexed median, Montrose ranks #13from highest to lowest. Across all 161 state ZIP profiles, available estimates run from 13.7to 829 PPM.

The 232.5–236.5 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
Hard0 ZIPs
Very hard2 ZIPs

2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
8.2 miles
Profiles with evidence
2/2

Confidence labels

High: 0Moderate: 2Low: 0

Observation window: Jan 5, 2016 to Jun 3, 2026.

ZIP directory

Water reports in Montrose

Open a ZIP for site-level provenance and measurements.

ZIP code

81401

Very Hard

236.5 PPM

Nearest site
6 mi
Confidence
Moderate

View full ZIP evidence →

ZIP code

81403

Very Hard

232.5 PPM

Nearest site
8.2 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Montrose City Of

PWSID CO0143518

Surface water
System population served
19,305
Last reported
Jun 17, 2026

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

Cimarron Creek

PWSID CO0143177

Surface water
System population served
560
Last reported
Jun 17, 2026

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

Black Canyon Estates Mhp

PWSID CO0143134

Surface water
System population served
188
Last reported
Jun 17, 2026

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

Hidden Lake Community

PWSID CO0143337

Surface water
System population served
83
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

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Public NoticeCO0143518Nov 7, 2025Unaddressed
Public NoticeCO0143518Aug 9, 2025Unaddressed
Surface Water Treatment RuleCO0143337Aug 1, 2023Resolved
ChloramineCO0143337Jul 1, 2023Resolved
Surface Water Treatment RuleCO0143134Sep 1, 2022Resolved
Revised Total Coliform RuleCO0143134Sep 1, 2022Resolved
Surface Water Treatment RuleCO0143134Aug 1, 2022Resolved
Surface Water Treatment RuleCO0143134Jul 1, 2022Resolved
ChloramineCO0143134Jul 1, 2022Resolved
Revised Total Coliform RuleCO0143134Jun 1, 2022Resolved

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 Montrose

Is the water hard?

The indexed city median is 235 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.