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Tap water quality report

American Falls, ID

EPA monitoring detected 16 contaminants across the 2 water suppliers serving American Falls. 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.

2
water suppliers
4,955
people served
16
contaminants found
Idaho rankings Lead in Idaho PFAS in Idaho

What was found in American Falls'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
7580 µg/L 76%
of the EPA limit 10000 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Nitrate-Nitrite
6870 µg/L 69%
of the EPA limit 10000 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Fluoride
500 µg/L 13%
of the EPA limit 4000 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
Highest in the city: 600 µg/L — RIVERBEND ESTATES · 92 people · 2019
2/2 SYR4
Nitrite
245.5 µg/L 25%
of the EPA limit 1000 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
1/2 SYR4
Barium
244.2 µg/L 12%
of the EPA limit 2000 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Lithium
34 µg/L
No EPA limit set
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2024
1/2 UCMR-5
Gross Alpha, Excl. Radon And U
16.305 pCi/L 109%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Arsenic
10 µg/L 100%
of the EPA limit 10 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
Highest in the city: 13 µg/L — RIVERBEND ESTATES · 92 people · 2019
2/2 SYR4
Combined Uranium
8.6285 µg/L 29%
of the EPA limit 30 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Selenium
8.4 µg/L 17%
of the EPA limit 50 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
2/2 SYR4
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
Highest in the city: 2.9 µg/L — RIVERBEND ESTATES · 92 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1.2646 pCi/L 25%
of the EPA limit 5 pCi/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2016
Highest in the city: 1.7775 pCi/L — RIVERBEND ESTATES · 92 people · 2016
2/2 SYR4
Thallium, Total
1 µg/L 50%
of the EPA limit 2 µg/L
Highest in the city: RIVERBEND ESTATES · 92 people · 2019
1/2 SYR4
Di(2-ethylhexyl) Phthalate
0.8485 µg/L 14%
of the EPA limit 6 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
1/2 SYR4
Ethylene Dibromide
0.0295 µg/L 59%
of the EPA limit 0.0500 µg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2019
1/2 SYR4
Lead
0.0070 mg/L 47%
of the EPA limit 0.0150 mg/L
Main supplier: AMERICAN FALLS CITY OF · 4,863 people · 2025
2/2 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 American Falls

SupplierPopulation served
AMERICAN FALLS CITY OF 4,863
RIVERBEND ESTATES 92

Frequently asked questions about American Falls tap water

Is American Falls tap water safe to drink?

EPA testing detected 16 contaminants in the water serving American Falls. 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 American Falls?

2 public water suppliers report drinking-water monitoring for American Falls, Idaho to the EPA. Each is listed above with its population served.

What contaminants are in American Falls's water?

The contaminants EPA monitoring detected in American Falls include Nitrate, Nitrate-Nitrite, Fluoride, Nitrite, 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.