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Tap water quality report

Warm Springs, OR

EPA monitoring detected 20 contaminants across the 4 water suppliers serving Warm Springs. 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
4,355
people served
20
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Warm Springs'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
Fluoride
202 µg/L 5.1%
of the EPA limit 4000 µg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2012
Highest in the city: 2128.2 µg/L — SIMNASHO SCHOOLIE · 350 people · 2018
4/4 SYR4
Nitrate
1270 µg/L 13%
of the EPA limit 10000 µg/L
Highest in the city: BIA CELILO VILLAGE · 75 people · 2019
3/4 SYR4
Copper
72.05 µg/L 5.5%
of the EPA limit 1300 µg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
Highest in the city: 577.6 µg/L — SIMNASHO SCHOOLIE · 350 people · 2019
4/4 SYR4
Nitrate-Nitrite
250 µg/L 2.5%
of the EPA limit 10000 µg/L
Highest in the city: SIMNASHO SCHOOLIE · 350 people · 2018
2/4 SYR4
Arsenic
48.8 µg/L 488%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Highest in the city: SIMNASHO SCHOOLIE · 350 people · 2018
1/4 SYR4
TTHM
41.165 µg/L 51%
of the EPA limit 80 µg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
4/4 SYR4
Total Haloacetic Acids (HAA5)
39.995 µg/L 67%
of the EPA limit 60 µg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
3/4 SYR4
Chloroform
34.7 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
4/4 SYR4
Trichloroacetic Acid
24.995 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
3/4 SYR4
Lead
14 µg/L 93%
of the EPA limit 15 µg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
Highest in the city: 20.8 µg/L — BIA CELILO VILLAGE · 75 people · 2017
4/4 SYR4
Barium
18.9 µg/L 0.9%
of the EPA limit 2000 µg/L
Highest in the city: BIA CELILO VILLAGE · 75 people · 2019
1/4 SYR4
Dichloroacetic Acid
17.2 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
3/4 SYR4
Bromodichloromethane
5.255 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
4/4 SYR4
Dibromochloromethane
1.12 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
Highest in the city: 3.06 µg/L — BIA CELILO VILLAGE · 75 people · 2018
3/4 SYR4
Monochloroacetic Acid
2.8 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
1/4 SYR4
Bromoform
2.58 µg/L
No EPA limit set
Highest in the city: BIA CELILO VILLAGE · 75 people · 2018
2/4 SYR4
Combined Radium (-226 And -228)
1.4737 pCi/L 29%
of the EPA limit 5 pCi/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2018
Highest in the city: 1.5 pCi/L — SIDWALTER · 130 people · 2018
3/4 SYR4
Dibromoacetic Acid
1.38 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
1/4 SYR4
Monobromoacetic Acid
1.2 µg/L
No EPA limit set
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2019
1/4 SYR4
Lead
0.0140 mg/L 93%
of the EPA limit 0.0150 mg/L
Main supplier: WARM SPRINGS WATER TREATMENT PLANT · 3,800 people · 2021
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 Warm Springs

SupplierPopulation served
WARM SPRINGS WATER TREATMENT PLANT 3,800
SIMNASHO SCHOOLIE 350
SIDWALTER 130
BIA CELILO VILLAGE 75

Frequently asked questions about Warm Springs tap water

Is Warm Springs tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Warm Springs. 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 Warm Springs?

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

What contaminants are in Warm Springs's water?

The contaminants EPA monitoring detected in Warm Springs include Fluoride, Nitrate, Copper, Nitrate-Nitrite, Arsenic. 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.