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Water Hardness in 15924

Cairnbrook, Pennsylvania · Somerset County

58 PPM
3.4 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 3 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 3 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
3 USGS-backed sources
3 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 15924

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

3 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Lincoln Twp Muni Auth
PA4560031
Slightly Hard
89 PPMsurface water1,400 servedHigh Confidence — USGS Monitoring
Cairnbrook Improvement Assn
PA4560021
Soft
2 PPMgroundwater910 servedHigh Confidence — USGS Monitoring
Hidden Valley Resort Lp
PA4560049
Slightly Hard
70 PPMgroundwater750 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

1555913015926341555413015936951596332515539324155638715550130155213801556082155418615934341

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Cairnbrook, PA (15924).

Submit Your Data

Frequently Asked Questions

Is the water hard in Cairnbrook, PA (15924)?

The average water hardness in 15924 is 58 PPM (3.4 GPG), which is classified as soft.

Do I need a water softener in 15924?

At 58 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 15924 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 15924?

Zip code 15924 in Cairnbrook, Pennsylvania is served by 3 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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