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Tap water quality report

Fort Still, OK

EPA monitoring detected 12 contaminants across the 1 water supplier serving Fort Still. 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
23,000
people served
12
contaminants found
Oklahoma rankings Lead in Oklahoma PFAS in Oklahoma

What was found in Fort Still'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
300.9 µg/L 23%
of the EPA limit 1300 µg/L
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2018
1/1 SYR4
Lead
21.15 µg/L 141%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2018
1/1 SYR4
TTHM
21.105 µg/L 26%
of the EPA limit 80 µg/L
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Dibromochloromethane
8.246 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Bromoform
7.78 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
7.6245 µg/L 13%
of the EPA limit 60 µg/L
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Bromodichloromethane
7.1175 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Chloroform
5.4 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Dichloroacetic Acid
5.209 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Dibromoacetic Acid
3.609 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Monobromoacetic Acid
1.536 µg/L
No EPA limit set
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2019
1/1 SYR4
Lead
0.0012 mg/L 7.7%
of the EPA limit 0.0150 mg/L
Main supplier: FORT SILL HQUSAFACFS · 23,000 people · 2024
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 Fort Still

SupplierPopulation served
FORT SILL HQUSAFACFS 23,000

Frequently asked questions about Fort Still tap water

Is Fort Still tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Fort Still. 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 Fort Still?

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

What contaminants are in Fort Still's water?

The contaminants EPA monitoring detected in Fort Still 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.