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Clarksville, TN · 289,900 people served · EPA data 2021–2026

Tap water quality in Clarksville, Tennessee

Clarksville's water systems logged 5 health-based EPA violations in 2021–2026, most recently in 2025 — most often tthm. Health-based violations mean a federal limit or treatment standard was exceeded; check the systems below and your utility's annual report for specifics.

CFair
Clarksville water grade: C
Fair — our A–F grade from this city's EPA compliance record, relative to Tennessee and the nation. How we grade →
Health-based violations, 2021–20265
Tthm5
Clarksville Water Department251,864 served
East Montgomery U.D.18,382 served
Cunningham Utility District16,068 served
Cumberland Heights U.D.3,561 served
Tennessee quality rank#11 / 51 (87.6/100)
Tennessee avg hardness130 PPM (hard)
Want to know what's actually in your Clarksville water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

Test your water at home

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Clarksville tap water FAQ

Is tap water safe to drink in Clarksville?

Clarksville's systems logged 5 health-based violations in 2021–2026, most commonly tthm. A violation is a red flag for a period of time, not a permanent condition — your utility's current Consumer Confidence Report shows today's status, and a certified home test shows what's at your tap.

Who supplies Clarksville's water?

Clarksville Water Department (serving about 251,864 people); East Montgomery U.D. (serving about 18,382 people); Cunningham Utility District (serving about 16,068 people); Cumberland Heights U.D. (serving about 3,561 people). Data: EPA Safe Drinking Water Information System, July 2026.

How hard is the water in Clarksville?

City-level hardness isn't published in a single federal dataset, but Tennessee averages 130 PPM — "hard" on the USGS scale. Your utility's water quality report lists Clarksville's exact hardness, or a $10 test strip tells you in a minute. If it comes back over 120 PPM, see our water softener guidance in the purification calculator.

Do I need a water filter in Clarksville?

With 5 health-based violations on record in 2021–2026, a certified filter is reasonable insurance here: reverse osmosis ($150–$1,300 installed, Angi 2026) covers lead, nitrates and PFAS at the tap. Test first ($50–$200) so you buy for what's actually present.

Want to know what's actually in your Clarksville water?

Averages describe states, not your faucet. A certified home water test screens for lead, nitrates, bacteria and dozens of other contaminants — the same categories EPA regulates.

Test your water at home

We may earn a commission if you request quotes through this link. It costs you nothing and never affects the data we publish.