Is Prior Lake, 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 Prior Lake Water System.
Prior Lake Water System supplies Prior Lake (29,300 people).
Water system
Prior Lake Water System
29,300 people · Groundwater · EPA ID MN1700007
Buys treated water from Savage Water System, North Water Treatment Plant (NWTP), South Water Treatment Plant (SWTP).
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
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: 0 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: 0
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.
Prior Lake homes and lead pipes
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 Prior Lake city (tables B25034, B25003). Estimates for small places have a margin of error.
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Shakopee 4 mi Shakopee Water System | None above limits | 2 ppb |
| Savage 4 mi Savage Water System | None above limits | 0 ppb |
| Burnsville 8 mi Burnsville Water System | None above limits | 0 ppb |
| Eden Prairie 8 mi Eden Prairie Water System | None above limits | 0 ppb |
| Bloomington 9 mi Bloomington Water System | None above limits | 2 ppb |
| Lakeville 10 mi Lakeville Water System | None above limits | 0 ppb |
Prior Lake ZIP codes (1)
- 55372
Questions
Is Prior Lake tap water safe to drink?
Prior Lake Water System has had no 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 Prior Lake, MN?
Prior Lake Water System, which serves 29,300 people.
Does Prior Lake tap water have PFAS?
None detected above EPA's reporting limits. Prior Lake Water System had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Prior Lake homes have lead pipes?
Census estimates put 21% of Prior Lake 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. Prior Lake 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.