Is Ozark, MO Tap Water Safe? Quality & Contaminants

What was found in Ozark'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
Nitrate-Nitrite	826.5 µg/L 8.3% of the EPA limit 10000 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	3/6	SYR4
Fluoride	269 µg/L 6.7% of the EPA limit 4000 µg/L Highest in the city: SUNSET HEIGHTS 2ND ADDITION · 37 people · 2019	3/6	SYR4
Barium	161.25 µg/L 8.1% of the EPA limit 2000 µg/L Main supplier: OZARK PWS · 22,000 people · 2019 Highest in the city: 165.25 µg/L — BLUE STEM ESTATES SUBD · 36 people · 2019	6/6	SYR4
Copper	95.6 µg/L 7.4% of the EPA limit 1300 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	6/6	SYR4
TTHM	28.56 µg/L 36% of the EPA limit 80 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Chloroform	27.74 µg/L No EPA limit set Main supplier: OZARK PWS · 22,000 people · 2019	2/6	SYR4
Lead	9.752 µg/L 65% of the EPA limit 15 µg/L Main supplier: OZARK PWS · 22,000 people · 2019 Highest in the city: 23.033 µg/L — SUNSET HEIGHTS 2ND ADDITION · 37 people · 2019	4/6	SYR4
Total Haloacetic Acids (HAA5)	12.685 µg/L 21% of the EPA limit 60 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Dichloroacetic Acid	11.45 µg/L No EPA limit set Main supplier: OZARK PWS · 22,000 people · 2019	2/6	SYR4
Gross Alpha, Excl. Radon And U	10.07 pCi/L 67% of the EPA limit 15 pCi/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Selenium	8.474 µg/L 17% of the EPA limit 50 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Chromium	4.84 µg/L 4.8% of the EPA limit 100 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	6/6	SYR4
Trichloroacetic Acid	2.202 µg/L No EPA limit set Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Antimony, Total	1.3985 µg/L 23% of the EPA limit 6 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Arsenic	1.314 µg/L 13% of the EPA limit 10 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Combined Radium (-226 And -228)	1 pCi/L 20% of the EPA limit 5 pCi/L Main supplier: OZARK PWS · 22,000 people · 2019 Highest in the city: 1.2 pCi/L — PIPPINVILLE & OAK PARK OWNERS ASSN · 150 people · 2017	2/6	SYR4
Xylenes, Total	0.9860 µg/L 0% of the EPA limit 10000 µg/L Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Bromodichloromethane	0.9230 µg/L No EPA limit set Main supplier: OZARK PWS · 22,000 people · 2019	1/6	SYR4
Styrene	0.6500 µg/L 0.7% of the EPA limit 100 µg/L Highest in the city: BLUE STEM ESTATES SUBD · 36 people · 2019	1/6	SYR4
PFBS	0.0049 µg/L No EPA limit set Main supplier: OZARK PWS · 22,000 people · 2024	1/6	UCMR-5
Lead	0.0012 mg/L 8.1% of the EPA limit 0.0150 mg/L Main supplier: OZARK PWS · 22,000 people · 2024 Highest in the city: 0.0025 mg/L — SUNSET HEIGHTS 2ND ADDITION · 37 people · 2025	6/6	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 Ozark

Supplier	Population served
OZARK PWS	22,000
PIPPINVILLE & OAK PARK OWNERS ASSN	150
CEDAR HILL APTS	102
SUNSET HEIGHTS 2ND ADDITION	37
BLUE STEM ESTATES SUBD	36
SUNSET HEIGHTS SUBD WELL 2 BLOCK 2	25

Frequently asked questions about Ozark tap water

Is Ozark tap water safe to drink?

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

6 public water suppliers report drinking-water monitoring for Ozark, Missouri to the EPA. Each is listed above with its population served.

What contaminants are in Ozark's water?

The contaminants EPA monitoring detected in Ozark include Nitrate-Nitrite, Fluoride, Barium, Copper, 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.