Maple Plain, MN: High Radon Risk — 66/100 (2026)
11 ZIP codes · 2 water systems · Updated 2026-06-03
Across water systems in Maple Plain, safety results are uneven — a portion carry active or recent violations, while others meet federal standards without incident, placing the city in the middle tier for MN.
How Maple Plain Compares
Data: EPA SDWIS Last verified: 2026-06-03
Water Quality Map: Maple Plain, MN
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Score Distribution
How ZIP codes in Maple Plain score across all safety grades.
What You Should Know About Maple Plain Water
- Average lead level: 0.001 mg/L.
- Estimated remediation: $1,364 per household.
- CDC health risk index: 10.37.
Who Supplies Your Water in Maple Plain
Residential water in Maple Plain, MN is supplied by 2 separate utilities — not one centralized authority. Each of those providers operates under its own service territory boundary, maintains its own distribution infrastructure, and files compliance documentation with the EPA on its own timeline. Federal data counts 2 water systems in the area, with these providers collectively accounting for the dominant share of household connections.
Overview
We track water quality and home safety data for 11 ZIP codes in Maple Plain, Minnesota, covering 2 community water systems serving approximately 7,068 people.
No EPA violations recorded across any ZIP codes in Maple Plain — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Maple Plain: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Maple Plain water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0010 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
- Zone 1 (High): 11 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 55348 | C | Maple Plain | 2,174 |
| 55359 | B | Maple Plain | 2,174 |
| 55393 | C | Maple Plain | 2,174 |
| 55570 | C | Maple Plain | 2,174 |
| 55571 | C | Maple Plain | 2,174 |
| 55574 | C | Maple Plain | 2,174 |
| 55576 | C | Maple Plain | 2,174 |
| 55578 | C | Maple Plain | 2,174 |
| 55579 | C | Maple Plain | 2,174 |
| 55592 | C | Maple Plain | 2,174 |
All ZIP Codes in Maple Plain
- 55348 [C]
- 55359 [B]
- 55393 [C]
- 55570 [C]
- 55571 [C]
- 55574 [C]
- 55576 [C]
- 55578 [C]
- 55579 [C]
- 55592 [C]
- 55593 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Health Outcomes in Maple Plain
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Cost Context: What Remediation Means for Maple Plain Homeowners
In Maple Plain, property values comfortably outpace what documented remediation typically costs — the equity share is proportionally low.
Remediation costs in Maple Plain are relatively low compared to home values. The $909–$1,727 estimated range is a small fraction of median property value. Home values are 139% above the Minnesota average.
Lead Exposure Risk for Children in Maple Plain
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Lead risk in Maple Plain appears low overall, but individual homes may differ. Testing is the only way to confirm your water's lead content.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Maple Plain
NFIP data for Maple Plain shows a modest claim record and limited flood zone footprint — a combination that places flood exposure well below the threshold where water quality becomes an active planning concern. The connection between flooding and water safety is real during major events anywhere, but it stays in the background here rather than rising to an active local risk factor.
Maple Plain has a relatively low flood history with 1 FEMA claims on record. 9% of ZIP codes are in FEMA flood zones. While risk is limited, severe weather events can still impact water infrastructure.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$1,364</strong> remediation cost per household.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Maple Plain
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Maple Plain, MN