Is Wellston, OK Tap Water Safe? Quality & Contaminants

What was found in Wellston'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	167.7 µg/L 13% of the EPA limit 1300 µg/L Main supplier: WELLSTON · 825 people · 2017 Highest in the city: 1290 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Nitrate-Nitrite	550 µg/L 5.5% of the EPA limit 10000 µg/L Main supplier: WELLSTON · 825 people · 2019	1/2	SYR4
Fluoride	240 µg/L 6% of the EPA limit 4000 µg/L Main supplier: WELLSTON · 825 people · 2014	1/2	SYR4
TTHM	102.65 µg/L 128% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 182.5 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Barium	115 µg/L 5.8% of the EPA limit 2000 µg/L Main supplier: WELLSTON · 825 people · 2014	1/2	SYR4
Chloroform	50.8 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 90.115 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Total Haloacetic Acids (HAA5)	40.34 µg/L 67% of the EPA limit 60 µg/L Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 51.625 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Bromodichloromethane	36.9 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 51.34 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Dibromochloromethane	28.8 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 30.155 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Dichloroacetic Acid	18.38 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 27.21 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Trichloroacetic Acid	19.535 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 24.62 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Lead	21.275 µg/L 142% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the city: LINCOLN CO RWD #3 · 575 people · 2019	1/2	SYR4
Bromoform	9.553 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019	2/2	SYR4
Monochloroacetic Acid	5.22 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 7.57 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Dibromoacetic Acid	4.677 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019 Highest in the city: 5.881 µg/L — LINCOLN CO RWD #3 · 575 people · 2019	2/2	SYR4
Gross Beta Particle Activity	4.12 pCi/L No EPA limit set Main supplier: WELLSTON · 825 people · 2014	1/2	SYR4
Monobromoacetic Acid	2.153 µg/L No EPA limit set Main supplier: WELLSTON · 825 people · 2019	2/2	SYR4
Gross Alpha, Excl. Radon And U	0.5250 pCi/L 3.5% of the EPA limit 15 pCi/L Main supplier: WELLSTON · 825 people · 2014	1/2	SYR4
Combined Radium (-226 And -228)	0.4270 pCi/L 8.5% of the EPA limit 5 pCi/L Main supplier: WELLSTON · 825 people · 2014	1/2	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: WELLSTON · 825 people · 2023 Highest in the city: 0.0057 mg/L — LINCOLN CO RWD #3 · 575 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 Wellston

Supplier	Population served
WELLSTON	825
LINCOLN CO RWD #3	575

Frequently asked questions about Wellston tap water

Is Wellston tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Wellston. 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 Wellston?

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

What contaminants are in Wellston's water?

The contaminants EPA monitoring detected in Wellston include Copper, Nitrate-Nitrite, Fluoride, TTHM, 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.