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City water profile

Rock Springs water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Rock Springs, Wyoming.

Median indexed hardness

248PPM

One indexed ZIP

Range 248–248 PPM

State comparison
13 PPM above
State hardness rank
#41 of 86
Matched utilities
10
Active health records
0

City summary

What the indexed records say

Rock Springs has 1 published ZIP profile across Sweetwater County. The indexed median is 248 PPM, compared with 235 PPM across Wyoming.

Among the 86 Wyomingcities with an indexed median, Rock Springs ranks #41from highest to lowest. Across all 97 state ZIP profiles, available estimates run from 3.2to 1905 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
22.9 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Jan 5, 2016 to Jun 10, 2026.

ZIP directory

Water reports in Rock Springs

Open a ZIP for site-level provenance and measurements.

ZIP code

82901

Very Hard

248 PPM

Nearest site
22.9 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Rock Springs, City Of

PWSID WY5601182

Surface water
System population served
24,000
Last reported
Jun 29, 2026

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

White Mountain W&s District

PWSID WY5601391

Surface water
System population served
3,000
Last reported
Jun 29, 2026

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

Clearview I&s District

PWSID WY5600091

Surface water
System population served
930
Last reported
Jun 29, 2026

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

Skyline Village Mobile Home Pk

PWSID WY5601176

Surface water
System population served
700
Last reported
Jun 29, 2026

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

Western Hills Mhp

PWSID WY5601085

Surface water
System population served
450
Last reported
Jun 29, 2026

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

Lewis Mobile Home Park

PWSID WY5601175

Surface water
System population served
370
Last reported
Jun 29, 2026

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

Horizon Mhp

PWSID WY5600088

Surface water
System population served
330
Last reported
Jun 29, 2026

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

Ten Mile Water And Sewer District

PWSID WY5601369

Surface water
System population served
305
Last reported
Jun 29, 2026

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

White Mountain Mobile Home Park

PWSID WY5601206

Surface water
System population served
270
Last reported
Jun 29, 2026

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

Garcia Mobile Home Park

PWSID WY5601746

Surface water
System population served
148
Last reported
Jun 29, 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
Lead and Copper RuleWY5601175Dec 30, 2024Unaddressed
Lead and Copper RuleWY5601176Oct 1, 2023Resolved
Lead and Copper RuleWY5601085Oct 1, 2023Resolved
Lead and Copper RuleWY5600088Oct 1, 2023Resolved
Long Term 2 Enhanced Surface Water Treatment RuleWY5601176Sep 3, 2023Resolved · health-based
TTHMWY5601176Jan 1, 2023Resolved
Lead and Copper RuleWY5600091Dec 30, 2022Resolved
Lead and Copper RuleWY5601085Dec 30, 2022Resolved
Lead and Copper RuleWY5601175Oct 1, 2022Resolved
TTHMWY5601176Mar 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 Rock Springs

Is the water hard?

The indexed city median is 248 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.