Where does the water in 28079 come from?

Water for zip code 28079 in Indian Trail, North Carolina is provided by 2 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 28079

Indian Trail, North Carolina · Union County

49 PPM

2.9 GPG

Soft

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 2 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 2 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

2 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 28079

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.

2 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.

Water System	Source	Hardness	Pop. Served	Data Source
Union County Water System NC0190413	surface water	49 PPM Soft	167,554	High Confidence — USGS Monitoring
Monroe, City Of NC0190010	surface water	49 PPM Soft	43,081	Estimated — County Avg

Union County Water System

NC0190413

Soft

49 PPMsurface water167,554 servedHigh Confidence — USGS Monitoring

Monroe, City Of

NC0190010

Soft

49 PPMsurface water43,081 servedEstimated — County Avg

Nearby Zip Codes

2822734 2810534 2811049 2810449 2827034 2821234 2821534 2810735 2821134 28163191 2822634 2820534

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 Indian Trail, NC (28079).

Submit Your Data

Frequently Asked Questions

Is the water hard in Indian Trail, NC (28079)?

The average water hardness in 28079 is 49 PPM (2.9 GPG), which is classified as soft.

Do I need a water softener in 28079?

At 49 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 28079 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 28079?

Zip code 28079 in Indian Trail, North Carolina is served by 2 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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