Is Overbrook, KS Tap Water Safe? Quality & Contaminants

What was found in Overbrook'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
Fluoride	1000 µg/L 25% of the EPA limit 4000 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017	2/2	SYR4
Copper	641 µg/L 49% of the EPA limit 1300 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017 Highest in the city: 685 µg/L — OVERBROOK, CITY OF · 999 people · 2017	2/2	SYR4
Nitrate	230 µg/L 2.3% of the EPA limit 10000 µg/L Highest in the city: OVERBROOK, CITY OF · 999 people · 2019	1/2	SYR4
TTHM	118 µg/L 148% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	2/2	SYR4
Chloroform	86.4 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	2/2	SYR4
Barium	68.85 µg/L 3.4% of the EPA limit 2000 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017 Highest in the city: 80.9 µg/L — OVERBROOK, CITY OF · 999 people · 2017	2/2	SYR4
Lead	5.73 µg/L 38% of the EPA limit 15 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017 Highest in the city: 29.48 µg/L — OVERBROOK, CITY OF · 999 people · 2017	2/2	SYR4
Total Haloacetic Acids (HAA5)	29.4 µg/L 49% of the EPA limit 60 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	1/2	SYR4
Bromodichloromethane	23.8 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	2/2	SYR4
Trichloroacetic Acid	21 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	1/2	SYR4
Dichloroacetic Acid	11.6 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	1/2	SYR4
Selenium	2.155 µg/L 4.3% of the EPA limit 50 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017 Highest in the city: 8.95 µg/L — OVERBROOK, CITY OF · 999 people · 2017	2/2	SYR4
Dibromochloromethane	7.325 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	2/2	SYR4
Bromoform	0.7500 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019 Highest in the city: 4.06 µg/L — OVERBROOK, CITY OF · 999 people · 2019	2/2	SYR4
Combined Radium (-226 And -228)	3.46 pCi/L 69% of the EPA limit 5 pCi/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2018	2/2	SYR4
Monochloroacetic Acid	3.41 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	1/2	SYR4
Arsenic	3.295 µg/L 33% of the EPA limit 10 µg/L Highest in the city: OVERBROOK, CITY OF · 999 people · 2017	1/2	SYR4
Dibromoacetic Acid	1.4 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019 Highest in the city: 1.658 µg/L — OVERBROOK, CITY OF · 999 people · 2019	2/2	SYR4
Monobromoacetic Acid	1.4515 µg/L No EPA limit set Main supplier: OSAGE CO RWD 5 · 3,875 people · 2019	1/2	SYR4
Chromium	1.2 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: OSAGE CO RWD 5 · 3,875 people · 2017	2/2	SYR4
Lead	0.0028 mg/L 19% of the EPA limit 0.0150 mg/L Main supplier: OSAGE CO RWD 5 · 3,875 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 Overbrook

Supplier	Population served
OSAGE CO RWD 5	3,875
OVERBROOK, CITY OF	999

Frequently asked questions about Overbrook tap water

Is Overbrook tap water safe to drink?

EPA testing detected 21 contaminants in the water serving Overbrook. 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 Overbrook?

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

What contaminants are in Overbrook's water?

The contaminants EPA monitoring detected in Overbrook include Fluoride, Copper, Nitrate, TTHM, Chloroform. 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.