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Water Hardness in 28791

Mountain Home, North Carolina · Henderson County

13 PPM
0.8 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 7 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 7 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
1 USGS-backed source
7 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 28791

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.

7 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.
Hendersonville, City Of
NC0145010
Soft
13 PPMsurface water79,278 servedHigh Confidence — USGS Monitoring
Clear Creek Meadows S/D
NC1045001
Soft
29 PPMgroundwater124 servedEstimated — Nearby Data
Holly Tree S/D
NC0145157
Soft
4 PPMsurface water95 servedEstimated — Nearby Data
The Boulders
NC1045043
Soft
4 PPMsurface water80 servedEstimated — Nearby Data
Wind Shadows Circle Mhp
NC0111127
Soft
29 PPMgroundwater72 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

287581328729132873913287261328732132879213287421328704152873113287663328768332879013

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 Mountain Home, NC (28791).

Submit Your Data

Frequently Asked Questions

Is the water hard in Mountain Home, NC (28791)?

The average water hardness in 28791 is 13 PPM (0.8 GPG), which is classified as soft.

Do I need a water softener in 28791?

At 13 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 28791 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 28791?

Zip code 28791 in Mountain Home, North Carolina is served by 7 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.

10 min read

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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