Tap WaterIndex

← Minnesota

Tap water quality report

Lake Elmo

EPA monitoring tested this supplier for 102 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
14
detected
10,978
people served
39
health-based violations
Minnesota rankingsLead in MinnesotaPFAS in Minnesota
Water source
Ground water
Ownership
Local government
Counties served
Washington

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

39
health-based violations
70
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31
MCL Health-based Resolved 2011-10-01 → 2011-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.1400 µg/L 6/6 2023
PFOA 0.0120 µg/L 2/6 2023
Pfpea 0.0032 µg/L 2/6 2023

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate-Nitrite
3715 µg/L 37%
of the EPA limit 10000 µg/L
worst single sample: 4000 µg/L
40/40 SYR4 2012–2019
Fluoride
1300 µg/L 33%
of the EPA limit 4000 µg/L
worst single sample: 1500 µg/L
32/32 SYR4 2012–2019
Copper
125.45 µg/L 9.7%
of the EPA limit 1300 µg/L
worst single sample: 164 µg/L
30/30 SYR4 2014–2017
Lead
4.56 µg/L 30%
of the EPA limit 15 µg/L
worst single sample: 8.7 µg/L
19/30 SYR4 2014–2017
Bromodichloromethane
3.36 µg/L
No EPA limit set
worst single sample: 3.4 µg/L
9/17 SYR4 2012–2019
Chloroform
2.96 µg/L
No EPA limit set
worst single sample: 3 µg/L
9/17 SYR4 2012–2019
Dibromochloromethane
3.14 µg/L
No EPA limit set
worst single sample: 3.3 µg/L
9/17 SYR4 2012–2019
Bromoform
1.395 µg/L
No EPA limit set
worst single sample: 1.5 µg/L
8/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2023
Dichloroacetic Acid
1.585 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
4/9 SYR4 2012–2019
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
 3/9 SYR4 2012–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone
6517473900
Email
[email protected]

Frequently asked questions about Lake Elmo

Is Lake Elmo tap water safe to drink?

EPA monitoring detected 14 contaminants in Lake Elmo's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Lake Elmo's water?

EPA monitoring detected Nitrate-Nitrite, Fluoride, Copper, Lead, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Lake Elmo serve?

Lake Elmo reports serving 10,978 people in Minnesota, per its EPA record.

Has Lake Elmo had any water quality violations?

The EPA has 70 violations on file for Lake Elmo, of which 39 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.