Is St. Louis Park, MN Tap Water Safe? Quality & Contaminants

What was found in St. Louis Park's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate-Nitrite	27000 µg/L 270% of the EPA limit, in the worst sample — 10000 µg/L	3/3	SYR4
Fluoride	1100 µg/L 28% of the EPA limit 4000 µg/L	1/3	SYR4
Copper	997 µg/L 77% of the EPA limit 1300 µg/L	3/3	SYR4
Barium	191 µg/L 9.6% of the EPA limit 2000 µg/L	2/3	SYR4
Lithium	76.2 µg/L No EPA limit set	1/3	UCMR-5
cis-1,2-Dichloroethylene	20 µg/L 29% of the EPA limit 70 µg/L	1/3	SYR4
Lead	15.6 µg/L 104% of the EPA limit, in the worst sample — 15 µg/L	3/3	SYR4
Gross Alpha, Excl. Radon And U	11 pCi/L 73% of the EPA limit 15 pCi/L	1/3	SYR4
Dibromochloromethane	9.6 µg/L No EPA limit set	1/3	SYR4
Bromoform	5.8 µg/L No EPA limit set	1/3	SYR4
Bromodichloromethane	4.4 µg/L No EPA limit set	1/3	SYR4
Dichloroacetic Acid	2.4 µg/L No EPA limit set	1/3	SYR4
Vinyl Chloride	2.3 µg/L 115% of the EPA limit, in the worst sample — 2 µg/L	1/3	SYR4
Dibromoacetic Acid	2 µg/L No EPA limit set	1/3	SYR4
trans-1,2-Dichloroethylene	1.8 µg/L 1.8% of the EPA limit 100 µg/L	1/3	SYR4
Chloroform	1.7 µg/L No EPA limit set	1/3	SYR4
Di(2-ethylhexyl) Phthalate	1.6 µg/L 27% of the EPA limit 6 µg/L	1/3	SYR4
Trichloroacetic Acid	1.1 µg/L No EPA limit set	1/3	SYR4
Trichloroethylene	0.7000 µg/L 14% of the EPA limit 5 µg/L	1/3	SYR4
Benzene	0.3800 µg/L 7.6% of the EPA limit 5 µg/L	1/3	SYR4
Chromium	0.3100 µg/L 0.3% of the EPA limit 100 µg/L	1/3	SYR4
Lead	0.0156 mg/L 104% above the EPA limit of 0.0150 mg/L	3/3	LCR
Pfba	0.0119 µg/L No EPA limit set	1/3	UCMR-5

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 single worst sample on record — 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 St. Louis Park

Supplier	Population served
Saint Louis Park	50,010
Rockwood Estates	400
Countryside Estates	116

Frequently asked questions about St. Louis Park tap water

Is St. Louis Park tap water safe to drink?

EPA testing detected 23 contaminants in the water serving St. Louis Park. 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 St. Louis Park?

3 public water suppliers report drinking-water monitoring for St. Louis Park, Minnesota to the EPA. Each is listed above with its population served.

What contaminants are in St. Louis Park's water?

The contaminants EPA monitoring detected in St. Louis Park include Nitrate-Nitrite, Fluoride, Copper, Barium, Lithium. The full list, with the highest level found 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.