Lake Elmo

ZipCheckup's reading of EPA SDWIS for Lake Elmo (MN1820009): PFAS sampling above the current EPA limit (UCMR5). Despite the 14 historical violations in its record, Lake Elmo has cleared every one and now meets EPA standards serving 10,978 residents.

Data: EPA SDWIS

System Overview

Lake Elmo (EPA ID: MN1820009) is a community water system in Minnesota that serves approximately 10,978 people from groundwater sources.

This system serves ZIP code 55042 in Lake Elmo.

ZIP-Area Home Safety Context: D (49/100)

This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

Status breakdown for accepted records with record years 2021-2026: 0 resolved, 14 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MN or modeled from parcel and building-footprint data.

• 55042 - Lake Elmo

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lake Elmo (MN1820009) on EPA.gov.

Frequently Asked Questions

Is Lake Elmo water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Lake Elmo; its 14 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does Lake Elmo serve?

Lake Elmo serves approximately 10,978 people across 1 ZIP code in Minnesota.

Where does Lake Elmo get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-mn1820009,
  author = {{ZipCheckup}},
  title  = {{Lake Elmo (MN): 14 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/mn1820009/}
}