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Tap water quality report

Alcoa, TN

EPA monitoring detected 4 contaminants across the 1 water supplier serving Alcoa. 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.

1
water supplier
35,238
people served
4
contaminants found
Tennessee rankings Lead in Tennessee PFAS in Tennessee

What was found in Alcoa'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
467 µg/L 4.7%
of the EPA limit 10000 µg/L
Main supplier: ALCOA WATER SYSTEM · 35,238 people · 2019
1/1 SYR4
TTHM
84.075 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: ALCOA WATER SYSTEM · 35,238 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
79.39999999999999 µg/L 132%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: ALCOA WATER SYSTEM · 35,238 people · 2019
1/1 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: ALCOA WATER SYSTEM · 35,238 people · 2025
1/1 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 Alcoa

SupplierPopulation served
ALCOA WATER SYSTEM 35,238

Frequently asked questions about Alcoa tap water

Is Alcoa tap water safe to drink?

EPA testing detected 4 contaminants in the water serving Alcoa. 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 Alcoa?

1 public water supplier report drinking-water monitoring for Alcoa, Tennessee to the EPA. Each is listed above with its population served.

What contaminants are in Alcoa's water?

The contaminants EPA monitoring detected in Alcoa include Nitrate, TTHM, Total Haloacetic Acids (HAA5), Lead. 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.