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Lake Elmo, MN

EPA monitoring detected 15 contaminants across the 2 water suppliers serving Lake Elmo. 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.

2
water suppliers
13,378
people served
15
contaminants found
Minnesota rankings Lead in Minnesota PFAS in Minnesota

What was found in Lake Elmo'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
Nitrate-Nitrite
3715 µg/L 37%
of the EPA limit 10000 µg/L
Main supplier: Lake Elmo · 10,978 people · 2019
2/2 SYR4
Fluoride
1300 µg/L 33%
of the EPA limit 4000 µg/L
Main supplier: Lake Elmo · 10,978 people · 2019
1/2 SYR4
Copper
125.45 µg/L 9.7%
of the EPA limit 1300 µg/L
Main supplier: Lake Elmo · 10,978 people · 2017
2/2 SYR4
Chloroform
2.96 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
Highest in the city: 8.34 µg/L — Cimarron Park · 2,400 people · 2019
2/2 SYR4
Bromodichloromethane
3.36 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
Highest in the city: 4.92 µg/L — Cimarron Park · 2,400 people · 2019
2/2 SYR4
Lead
4.56 µg/L 30%
of the EPA limit 15 µg/L
Main supplier: Lake Elmo · 10,978 people · 2017
2/2 SYR4
Dibromochloromethane
3.14 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
2/2 SYR4
Dichloroacetic Acid
1.585 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
Highest in the city: 1.775 µg/L — Cimarron Park · 2,400 people · 2019
2/2 SYR4
Bromoform
1.395 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2019
1/2 SYR4
Trichloroacetic Acid
1.1 µg/L
No EPA limit set
Highest in the city: Cimarron Park · 2,400 people · 2019
1/2 SYR4
Pfba
0.1400 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2023
1/2 UCMR-5
PFOA
0.0120 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2023
1/2 UCMR-5
Pfpea
0.0032 µg/L
No EPA limit set
Main supplier: Lake Elmo · 10,978 people · 2023
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: Lake Elmo · 10,978 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 Lake Elmo

SupplierPopulation served
Lake Elmo 10,978
Cimarron Park 2,400

Frequently asked questions about Lake Elmo tap water

Is Lake Elmo tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Lake Elmo. 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 Lake Elmo?

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

What contaminants are in Lake Elmo's water?

The contaminants EPA monitoring detected in Lake Elmo include Nitrate-Nitrite, Fluoride, Copper, Chloroform, Bromodichloromethane. 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.