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Water Hardness in 76401

Stephenville, Texas · Erath County

112 PPM
6.6 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 11 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 11 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
10 USGS-backed sources
11 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. 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 76401

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.

11 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.
City Of Stephenville
TX0720002
Slightly Hard
94 PPMsurface water23,110 servedHigh Confidence — USGS Monitoring
Northside Water
TX0720020
Very Hard
298 PPMgroundwater620 servedHigh Confidence — USGS Monitoring
Morgan Mill Wsc
TX0720012
Very Hard
298 PPMgroundwater522 servedEstimated — County Avg
Shady Grove Subdivision
TX1110085
Very Hard
298 PPMgroundwater367 servedHigh Confidence — USGS Monitoring
Comanche Peak North
TX1110050
Very Hard
298 PPMgroundwater249 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | How to Test Your 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 Stephenville, TX (76401).

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Frequently Asked Questions

Is the water hard in Stephenville, TX (76401)?

The average water hardness in 76401 is 112 PPM (6.6 GPG), which is classified as slightly hard.

Do I need a water softener in 76401?

At 112 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 76401 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 76401?

Zip code 76401 in Stephenville, Texas is served by 11 water systems.

Learn More About Your Water