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Tap water quality report

Rosemount

EPA monitoring tested this supplier for 102 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
17
detected
26,500
people served
4
health-based violations
Minnesota rankingsLead in MinnesotaPFAS in Minnesota
Water source
Ground water
Ownership
Local government
Counties served
Dakota

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.

4
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MR Monitoring Resolved 2022-10-01
MR Monitoring Resolved 2022-10-01
MR Monitoring Resolved 2022-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0703 µg/L 15/16 2024

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
877.7 µg/L 68%
of the EPA limit 1300 µg/L
worst single sample: 988 µg/L
90/90 SYR4 2013–2019
Nitrate-Nitrite
5200 µg/L 52%
of the EPA limit 10000 µg/L
worst single sample: 5600 µg/L
70/132 SYR4 2012–2019
Lead
3.745 µg/L 25%
of the EPA limit 15 µg/L
worst single sample: 7.2 µg/L
58/90 SYR4 2013–2019
Fluoride
1000 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1200 µg/L
33/33 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
12.95 pCi/L 86%
of the EPA limit 15 pCi/L
worst single sample: 14 pCi/L
22/24 SYR4 2012–2019
Chloroform
18 µg/L
No EPA limit set
worst single sample: 39 µg/L
21/57 SYR4 2012–2019
Bromodichloromethane
3.06 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
17/57 SYR4 2012–2019
Dibromochloromethane
2 µg/L
No EPA limit set
 14/57 SYR4 2012–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Barium
129 µg/L 6.5%
of the EPA limit 2000 µg/L
worst single sample: 138 µg/L
10/10 SYR4 2012–2019
Dichloroacetic Acid
4.09 µg/L
No EPA limit set
worst single sample: 4.3 µg/L
7/29 SYR4 2012–2019
Bromoform
1.225 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
6/57 SYR4 2012–2019
Chromium
1.1855 µg/L 1.2%
of the EPA limit 100 µg/L
worst single sample: 1.31 µg/L
4/18 SYR4 2012–2019
Trichloroacetic Acid
2.13 µg/L
No EPA limit set
worst single sample: 2.2 µg/L
3/29 SYR4 2012–2019
Arsenic
2.1925 µg/L 22%
of the EPA limit 10 µg/L
worst single sample: 2.25 µg/L
2/10 SYR4 2012–2019
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
 2/29 SYR4 2012–2019
85 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Phone
6513222003
Email
[email protected]

Frequently asked questions about Rosemount

Is Rosemount tap water safe to drink?

EPA monitoring detected 17 contaminants in Rosemount'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 Rosemount's water?

EPA monitoring detected Copper, Nitrate-Nitrite, Lead, Fluoride, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Rosemount serve?

Rosemount reports serving 26,500 people in Minnesota, per its EPA record.

Has Rosemount had any water quality violations?

The EPA has 7 violations on file for Rosemount, of which 4 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.