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Tap water quality report

Custer City, OK

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Custer City. 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
1,353
people served
17
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Custer City'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-Nitrite
9812.5 µg/L 98%
of the EPA limit 10000 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
2/2 SYR4
Fluoride
250 µg/L 6.3%
of the EPA limit 4000 µg/L
Highest in the city: CUSTER CITY PWS · 393 people · 2014
1/2 SYR4
Copper
178.75 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2017
Highest in the city: 231.4 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Barium
193 µg/L 9.7%
of the EPA limit 2000 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2014
2/2 SYR4
TTHM
15.34 µg/L 19%
of the EPA limit 80 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
Highest in the city: 17.36 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Bromodichloromethane
5.16 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
Highest in the city: 5.935 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Lead
5.8 µg/L 39%
of the EPA limit 15 µg/L
Highest in the city: CUSTER CITY PWS · 393 people · 2017
1/2 SYR4
Dibromochloromethane
5.34 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
5.02 pCi/L 33%
of the EPA limit 15 pCi/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2017
2/2 SYR4
Total Haloacetic Acids (HAA5)
3.755 µg/L 6.3%
of the EPA limit 60 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
Highest in the city: 4.64 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Chloroform
3.22 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
Highest in the city: 4.473 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Arsenic
3.345 µg/L 33%
of the EPA limit 10 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2014
Highest in the city: 3.815 µg/L — CUSTER CITY PWS · 393 people · 2014
2/2 SYR4
Combined Uranium
1.87 µg/L 6.2%
of the EPA limit 30 µg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2017
Highest in the city: 3.7 µg/L — CUSTER CITY PWS · 393 people · 2018
2/2 SYR4
Dichloroacetic Acid
2.22 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
Highest in the city: 2.587 µg/L — CUSTER CITY PWS · 393 people · 2017
2/2 SYR4
Bromoform
2.31 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
2/2 SYR4
Dibromoacetic Acid
2.17 µg/L
No EPA limit set
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2019
2/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: CUSTER COUNTY RWD #3 · 960 people · 2023
Highest in the city: 0.0065 mg/L — CUSTER CITY PWS · 393 people · 2023
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 Custer City

SupplierPopulation served
CUSTER COUNTY RWD #3 960
CUSTER CITY PWS 393

Frequently asked questions about Custer City tap water

Is Custer City tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Custer City. 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 Custer City?

2 public water suppliers report drinking-water monitoring for Custer City, Oklahoma to the EPA. Each is listed above with its population served.

What contaminants are in Custer City's water?

The contaminants EPA monitoring detected in Custer City include Nitrate-Nitrite, Fluoride, Copper, Barium, TTHM. 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.