Water Hardness in Calhoun, TN

Q: Do I need a water softener in Calhoun, TN?

With a citywide weighted average hardness of 263 PPM, a water softener is recommended for homes in Calhoun. A water softener is strongly recommended. Very hard water can significantly reduce appliance lifespan.

Q: How many water systems serve Calhoun, TN?

Calhoun, Tennessee has 3 matched water systems across 1 zip code.

Tennessee · 1 zip codes · 3 matched water systems

263 PPM

15.4 GPG

Very Hard

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 20263 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 3 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis

1 USGS-backed source

3 matched systems total for this city; 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 in Calhoun

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

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.

Water System	Source	Hardness	Pop. Served	Data Source
Athens Utilities Board TN0000024	surface water	160 PPM Moderately Hard	25,851	Estimated — County Avg
Etowah Utilities TN0000233	surface water	516 PPM Very Hard	12,851	High Confidence — USGS Monitoring
Calhoun-Charleston U.D. TN0000106	surface water	65 PPM Slightly Hard	2,895	Estimated — Nearby Data

Athens Utilities Board

TN0000024

Moderately Hard

160 PPMsurface water25,851 servedEstimated — County Avg

Etowah Utilities

TN0000233

Very Hard

516 PPMsurface water12,851 servedHigh Confidence — USGS Monitoring

Calhoun-Charleston U.D.

TN0000106

Slightly Hard

65 PPMsurface water2,895 servedEstimated — Nearby Data

Zip Codes in Calhoun, TN

37309263

What This Means For You

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

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Whole-House Water Filter

Our PickiSpring WGB32B 3-Stage

Water Softener Salt

Our PickMorton Clean & Protect Also GreatDiamond Crystal Bright & Soft

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Calhoun, TN.

Submit Your Data

Frequently Asked Questions

How hard is the water in Calhoun, TN?

The citywide weighted average water hardness in Calhoun, TN is 263 PPM (15.4 GPG), classified as very hard. This is based on 3 matched water systems.

Do I need a water softener in Calhoun, TN?

With a citywide average hardness of 263 PPM, a water softener is recommended for homes in Calhoun. Confirm your tap reading before sizing equipment.

Is hard water in Calhoun, 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 Calhoun, TN?

Calhoun, Tennessee is served by 3 matched water systems across 1 zip code.