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Tap water quality report

Douglas, OK

EPA monitoring detected 11 contaminants across the 1 water supplier serving Douglas. 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
32
people served
11
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Douglas'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
Copper
843 µg/L 65%
of the EPA limit 1300 µg/L
Main supplier: DOUGLAS · 32 people · 2019
1/1 SYR4
Lead
655.875 µg/L 4373%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: DOUGLAS · 32 people · 2019
1/1 SYR4
TTHM
25.295 µg/L 32%
of the EPA limit 80 µg/L
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Dibromochloromethane
10.431 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Bromoform
7.002 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Bromodichloromethane
6.003 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Total Haloacetic Acids (HAA5)
5.113 µg/L 8.5%
of the EPA limit 60 µg/L
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Dibromoacetic Acid
3.382 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Chloroform
2.1375 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Dichloroacetic Acid
2.1015 µg/L
No EPA limit set
Main supplier: DOUGLAS · 32 people · 2018
1/1 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: DOUGLAS · 32 people · 2026
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 Douglas

SupplierPopulation served
DOUGLAS 32

Frequently asked questions about Douglas tap water

Is Douglas tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Douglas. 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 Douglas?

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

What contaminants are in Douglas's water?

The contaminants EPA monitoring detected in Douglas include Copper, Lead, TTHM, Dibromochloromethane, Bromoform. 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.