Mc Farland, WI: High Radon Risk — 70/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Based on current monitoring, Mc Farland holds an above-average drinking water safety record for WI — violations are infrequent and typically minor when they do appear.
How Mc Farland Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Mc Farland Water
- Average lead level: 0.0021 mg/L.
- Homes built before 1986: 51% — older plumbing may contain lead solder.
- Estimated remediation: $2,900 per household.
- CDC health risk index: 10.18.
Who Supplies Your Water in Mc Farland
Residential addresses in Mc Farland, WI are served by 2 primary water providers out of 2 systems in federal records. Each system maintains separate infrastructure and files its own EPA compliance reports, so service conditions are not uniform across the city.
Overview
We track water quality and home safety data for 1 ZIP code in Mc Farland, Wisconsin (population ~13,133), covering 2 community water systems serving approximately 281,676 people region-wide.
No EPA violations recorded across any ZIP codes in Mc Farland — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Mc Farland: B (70/100)
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
Mc Farland water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0021 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)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 53558 | B | Mcfarland Waterworks | 9,676 |
All ZIP Codes in Mc Farland
- 53558 [B]
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 Mc Farland
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
Housing & Infrastructure in Mc Farland
With 51% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Mc Farland's housing stock is predominantly older, with a median build year of 1984 that reflects decades of construction before federal plumbing standards were tightened. The 1986 ban on lead solder and the pre-1970 era of lead service lines are both relevant benchmarks here — a significant share of the residential inventory predates one or both of those cutoffs, creating an elevated baseline for plumbing-related lead risk that aggregate water quality data may not fully reflect at the household level.
Over half of homes in Mc Farland were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Mc Farland Homeowners
Property equity in Mc Farland runs well ahead of estimated remediation costs — a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Mc Farland are relatively low compared to home values. The $1,900–$4,100 estimated range is a small fraction of median property value. Home values are 63% above the Wisconsin average.
Lead Exposure Risk for Children in Mc Farland
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.
Before the federal solder ban, lead solder was a routine plumbing material, and 51% of the Mc Farland inventory was built in that earlier era — a share large enough to move household-level reads onto the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Mc Farland
Flood exposure in Mc Farland is meaningful by NFIP measures — 5 claims on record and 100% of ZIP codes carrying FEMA flood zone designations. That level of activity makes flood history a relevant factor when evaluating local water quality over time.
Mc Farland has a moderate flood history with 5 FEMA claims averaging $11,627 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$2,900</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Mc Farland, WI