Tap Water Results

Is Rosemount, MN tap water safe?

Data: U.S. EPA · How we read the data · How we check it

Summary

No federal limits exceeded in EPA data for Rosemount Water System. 1 PFAS were detected below the limits.

Rosemount Water System supplies Rosemount (26,500 people).

Water system

Rosemount Water System

26,500 people · Groundwater · EPA ID MN1190019

Buys treated water from Apple Valley Water System.

PFASHighest averageLimitStatus
PFOA
Not detected
–4 pptNot detected
PFOS
Not detected
–4 pptNot detected
PFHxS
Not detected
–10 pptNot detected
PFNA
Not detected
–10 pptNot detected
HFPO-DA (GenX)
Not detected
–10 pptNot detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 3 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 3

Across Minnesota, 10 of 197 water systems EPA tested had PFAS above a 2024 federal limit, and 7 systems were above the lead action level in results from the last five years. Minnesota results.

Rosemount homes and lead pipes

16%
of homes built before 1980 (Minnesota 52%, US 50%)
5%
built before 1950 (Minnesota 20%)
13%
of households rent (Minnesota 28%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Rosemount city (tables B25034, B25003). Estimates for small places have a margin of error.

How nearby cities compare

CityMain water systemPFASLead (90th pct.)
Inver Grove Heights 6 mi
Saint Paul Regional Water Services
Saint Paul Regional Water ServicesNone above limits10 ppb
Apple Valley 6 mi
Saint Paul Regional Water Services
Saint Paul Regional Water ServicesNone above limits10 ppb
Eagan 7 mi
Saint Paul Regional Water Services
Saint Paul Regional Water ServicesNone above limits10 ppb
Cottage Grove 9 mi
Cottage Grove Water System
Cottage Grove Water SystemNone above limits3 ppb
Lakeville 10 mi
Lakeville Water System
Lakeville Water SystemNone above limits0 ppb
Burnsville 10 mi
Burnsville Water System
Burnsville Water SystemNone above limits0 ppb
Rosemount ZIP codes (1)
  • 55068

Questions

Is Rosemount tap water safe to drink?

Rosemount Water System had 3 health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Rosemount, MN?

Rosemount Water System, which serves 26,500 people.

Does Rosemount tap water have PFAS?

Rosemount Water System had 1 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Rosemount homes have lead pipes?

Census estimates put 16% of Rosemount homes as built before 1980 (Minnesota: 52%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Rosemount Water System's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.