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Tap water quality report

Harriman, TN

EPA monitoring detected 7 contaminants across the 4 water suppliers serving Harriman. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

4
water suppliers
51,626
people served
7
contaminants found
Tennessee rankings Lead in Tennessee PFAS in Tennessee

What was found in Harriman's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
230 µg/L 2.3%
of the EPA limit 10000 µg/L
Main supplier: HARRIMAN UTILITY BOARD · 16,653 people · 2019
Highest in the city: 570 µg/L — WATTS BAR UTILITY DISTRICT · 15,571 people · 2019
3/4 SYR4
Fluoride
536.35 µg/L 13%
of the EPA limit 4000 µg/L
Highest in the city: CUMBERLAND UTILITY DISTRICT · 14,085 people · 2017
1/4 SYR4
TTHM
90.54 µg/L 113%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: HARRIMAN UTILITY BOARD · 16,653 people · 2019
Highest in the city: 110 µg/L — ROANE CENTRAL UTILITY DISTRICT · 5,317 people · 2019
4/4 SYR4
Total Haloacetic Acids (HAA5)
60.84 µg/L 101%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: HARRIMAN UTILITY BOARD · 16,653 people · 2019
Highest in the city: 70.6 µg/L — ROANE CENTRAL UTILITY DISTRICT · 5,317 people · 2019
4/4 SYR4
Barium
20.365 µg/L 1%
of the EPA limit 2000 µg/L
Highest in the city: CUMBERLAND UTILITY DISTRICT · 14,085 people · 2017
1/4 SYR4
Pfba
0.0140 µg/L
No EPA limit set
Highest in the city: ROANE CENTRAL UTILITY DISTRICT · 5,317 people · 2025
3/4 UCMR-5
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: HARRIMAN UTILITY BOARD · 16,653 people · 2025
4/4 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Harriman

SupplierPopulation served
HARRIMAN UTILITY BOARD 16,653
WATTS BAR UTILITY DISTRICT 15,571
CUMBERLAND UTILITY DISTRICT 14,085
ROANE CENTRAL UTILITY DISTRICT 5,317

Frequently asked questions about Harriman tap water

Is Harriman tap water safe to drink?

EPA testing detected 7 contaminants in the water serving Harriman. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Harriman?

4 public water suppliers report drinking-water monitoring for Harriman, Tennessee to the EPA. Each is listed above with its population served.

What contaminants are in Harriman's water?

The contaminants EPA monitoring detected in Harriman include Nitrate, Fluoride, TTHM, Total Haloacetic Acids (HAA5), Barium. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.