Is Clarksville, TN tap water safe?

Data: U.S. EPA · How we read the data · How we check it

No federal limits exceeded in EPA data for Clarksville Water Department.

7 public water systems serve parts of Clarksville. The largest, Clarksville Water Department, serves 251,864 people. Your water bill names your system.

Largest system

Clarksville Water Department

251,864 people · Surface water · EPA ID TN0000116

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 1 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Full Clarksville Water Department results

Across Tennessee, 17 of 275 water systems EPA tested had PFAS above a 2024 federal limit, and 0 systems were above the lead action level in results from the last five years. Tennessee results.

Clarksville homes and lead pipes

26%

of homes built before 1980 (Tennessee 41%, US 50%)

built before 1950 (Tennessee 10%)

44%

of households rent (Tennessee 33%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Clarksville city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Clarksville

East Montgomery Utility District
18,382 people · Purchased surface water · Tennessee · reported ZIPs here
Total trihalomethanes (TTHM) violations
Christian County Water District
17,248 people · Purchased surface water · Kentucky · reported ZIPs here
No PFAS above limits
Cunningham Utility District
16,068 people · Purchased surface water · Tennessee · reported ZIPs here
Total trihalomethanes (TTHM) violations
Woodlawn Utility District
12,714 people · Surface water · Tennessee · reported ZIPs here
Haloacetic acids (HAA5) violationsAlso: Total trihalomethanes (TTHM) violations
Cumberland Heights Utility District
3,623 people · Purchased surface water · Tennessee · reported ZIPs here
No PFAS above limits
Cunningham East-Montg Water Treatment Plant
Wholesale supplier (sells water to other systems) · Surface water · Tennessee · lists this city
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Nashville 41 mi Metro Water Services	Metro Water Services	None above limits	0.8 ppb
Hendersonville 45 mi Metro Water Services	Metro Water Services	None above limits	0.8 ppb
Gallatin 50 mi Gallatin Water Department	Gallatin Water Department	None above limits	1 ppb
Brentwood 50 mi Metro Water Services	Metro Water Services	None above limits	0.8 ppb
Franklin 52 mi Franklin Water Dept	Franklin Water Dept	None above limits	1 ppb
Mount Juliet 53 mi Metro Water Services	Metro Water Services	None above limits	0.8 ppb

Clarksville ZIP codes (4)

37040
37042
37043
42223

Questions

Is Clarksville tap water safe to drink?

Clarksville Water Department has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Clarksville, TN?

7 public water systems serve parts of Clarksville. The largest is Clarksville Water Department (251,864 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Clarksville tap water have PFAS?

None detected above EPA's reporting limits. Clarksville Water Department had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Clarksville homes have lead pipes?

Census estimates put 26% of Clarksville homes as built before 1980 (Tennessee: 41%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Clarksville Water Department's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.