WH

Water Hardness in Gallatin, TN

Tennessee · 1 zip codes · 5 matched water systems

100 PPM
5.8 GPG
Slightly Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 100 PPM

Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
White House Utility District
TN0000745
Water source: surface water
Serves: 130,411
USGS environmental estimate: 234 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
5 verified treated-water sources
5 matched systems total for this city; treated-water reports are prioritized when available.
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 in Gallatin

These systems are matched to Gallatin, TN. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

5 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.
White House Utility District
TN0000745
Slightly Hard
100 PPMsurface water130,411 servedVerified — Annual Water Quality Report
Source water: 234 PPM
Gallatin Water Department
TN0000253
Slightly Hard
100 PPMsurface water65,964 servedVerified — Annual Water Quality Report
Source water: 234 PPM
Hendersonville U.D.
TN0000294
Slightly Hard
100 PPMsurface water59,034 servedVerified — Annual Water Quality Report
Source water: 234 PPM
Portland Water System
TN0000559
Slightly Hard
100 PPMsurface water23,509 servedVerified — Annual Water Quality Report
Source water: 234 PPM
Castalian Springs-Bethpage U.D.
TN0000097
Slightly Hard
100 PPMsurface water14,184 servedVerified — Annual Water Quality Report
Source water: 234 PPM

Zip Codes in Gallatin, TN

What This Means For You

Recommendations are based on the displayed 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 Gallatin, TN.

Submit Your Data

Frequently Asked Questions

How hard is the water in Gallatin, TN?

The citywide weighted average water hardness in Gallatin, TN is 100 PPM (5.8 GPG), classified as slightly hard. This is based on 5 matched water systems.

Do I need a water softener in Gallatin, TN?

At 100 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Gallatin, TN 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 Gallatin, TN?

Gallatin, Tennessee is served by 5 matched water systems across 1 zip code.

Learn More About Your Water