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Tap water quality report

Elk River

EPA monitoring tested this supplier for 102 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
16
detected
19,532
people served
0
health-based violations
Minnesota rankingsLead in MinnesotaPFAS in Minnesota
Water source
Ground water
Ownership
Local government
Counties served
Sherburne

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.

0
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Archived 1992-05-01 → 1992-05-31
MR Monitoring Archived 1992-05-01 → 1992-05-31
MR Monitoring Archived 1992-05-01 → 1992-05-31
MR Monitoring Archived 1991-04-01 → 1991-04-30
MR Monitoring Archived 1991-04-01 → 1991-04-30
MR Monitoring Archived 1991-04-01 → 1991-04-30
MR Monitoring Archived 1991-03-01 → 1991-03-31
MR Monitoring Archived 1991-03-01 → 1991-03-31
MR Monitoring Archived 1991-03-01 → 1991-03-31

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
Copper
287.55 µg/L 22%
of the EPA limit 1300 µg/L
worst single sample: 1800 µg/L
90/90 SYR4 2013–2019
Lead
3.77 µg/L 25%
of the EPA limit 15 µg/L
worst single sample: 8.8 µg/L
72/90 SYR4 2013–2019
Nitrate-Nitrite
2300 µg/L 23%
of the EPA limit 10000 µg/L
worst single sample: 2400 µg/L
50/116 SYR4 2012–2019
Chloroform
8.52 µg/L
No EPA limit set
worst single sample: 12 µg/L
49/54 SYR4 2012–2019
Bromodichloromethane
2.69 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
42/54 SYR4 2012–2019
Fluoride
1400 µg/L 35%
of the EPA limit 4000 µg/L
worst single sample: 1500 µg/L
33/33 SYR4 2012–2019
Dichloroacetic Acid
4.65 µg/L
No EPA limit set
worst single sample: 5.2 µg/L
27/29 SYR4 2012–2019
Dibromochloromethane
1.6 µg/L
No EPA limit set
worst single sample: 2.1 µg/L
26/54 SYR4 2012–2019
Trichloroacetic Acid
4.6 µg/L
No EPA limit set
worst single sample: 5 µg/L
21/29 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Chromium
3.76 µg/L 3.8%
of the EPA limit 100 µg/L
worst single sample: 4.9 µg/L
7/16 SYR4 2012–2018
Barium
27.505 µg/L 1.4%
of the EPA limit 2000 µg/L
worst single sample: 28.3 µg/L
4/8 SYR4 2012–2018
2,4-D
0.2500 µg/L 0.4%
of the EPA limit 70 µg/L
 1/3 SYR4 2015–2018
Bromoform
0.5000 µg/L
No EPA limit set
 1/54 SYR4 2012–2019
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
 1/29 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
3.1 pCi/L 21%
of the EPA limit 15 pCi/L
 1/8 SYR4 2014–2018
86 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-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone
7634412020
Email
[email protected]

Frequently asked questions about Elk River

Is Elk River tap water safe to drink?

EPA monitoring detected 16 contaminants in Elk River'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 Elk River's water?

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

How many people does Elk River serve?

Elk River reports serving 19,532 people in Minnesota, per its EPA record.

Has Elk River had any water quality violations?

The EPA has 9 violations on file for Elk River, of which 0 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.