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Water Hardness in 37643

Elizabethton, Tennessee · Carter County

3 PPM
0.2 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 6 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 6 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
5 USGS-backed sources
6 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 37643

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.

6 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.
Elizabethton Water Dept
TN0000221
Soft
3 PPMsurface water32,490 servedHigh Confidence — USGS Monitoring
First U.D. Of Carter County
TN0000094
Soft
3 PPMsurface water9,143 servedHigh Confidence — USGS Monitoring
South Elizabethton U.D.
TN0000646
Soft
3 PPMsurface water6,154 servedHigh Confidence — USGS Monitoring
Siam Utility District
TN0000633
Soft
3 PPMsurface water3,319 servedHigh Confidence — USGS Monitoring
North Elizabethton Water Co-Op
TN0000223
Soft
3 PPMsurface water1,752 servedEstimated — County Avg
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

376183376583376943376403376013037620193768633768733761430376043028622372869214

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 Elizabethton, TN (37643).

Submit Your Data

Frequently Asked Questions

Is the water hard in Elizabethton, TN (37643)?

The average water hardness in 37643 is 3 PPM (0.2 GPG), which is classified as soft.

Do I need a water softener in 37643?

At 3 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 37643 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 37643?

Zip code 37643 in Elizabethton, Tennessee is served by 6 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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