Water Hardness in Clarksville, TN
Tennessee · 3 zip codes · 7 matched water systems
City avg (weighted): 100 PPM
Dataset updated March 9, 20267 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Clarksville, TN Water Hard or Soft?
The displayed hardness for Clarksville, TN is 100 PPM (5.8 GPG) from Clarksville Water Department, classified as slightly hard. The citywide weighted average is 100 PPM.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 7 matched water systems and 3 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Clarksville
These systems are matched to Clarksville, TN. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Clarksville Water Department TN0000116 | surface water | 100 PPM Slightly HardUSGS estimate: 234 PPM | |
| Fort Campbell Water System TN0000820 | surface water | 100 PPM Slightly HardUSGS estimate: 234 PPM | |
| East Montgomery U.D. TN0000218 | surface water | 100 PPM Slightly HardUSGS estimate: 234 PPM | |
| Cunningham Utility District TN0000167 | surface water | 100 PPM Slightly HardUSGS estimate: 234 PPM | |
| Woodlawn Utility District TN0000758 | surface water | 100 PPM Slightly HardUSGS estimate: 234 PPM |
Zip Codes in Clarksville, TN
What This Means For You
Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.
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 Clarksville, TN.
Frequently Asked Questions
How hard is the water in Clarksville, TN?
The citywide weighted average water hardness in Clarksville, TN is 100 PPM (5.8 GPG), classified as slightly hard. This is based on 7 matched water systems.
Do I need a water softener in Clarksville, TN?
At 100 PPM, the citywide average is relatively soft. A water softener is generally not necessary.
Is hard water in Clarksville, 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 Clarksville, TN?
Clarksville, Tennessee is served by 7 matched water systems across 3 zip codes.
Learn More About Your Water
How to Test Water Hardness at Home
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