CITY REPORT WI

Marion, WI: High Radon Risk - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
0
ZIPs with Violations
Zone 1
Radon Risk (High)
$152K
Median Home Value
$2,400
Est. Remediation (1.6% of home value)

Key Facts for Marion Residents

  • Average lead level: 0.0028 mg/L.
  • Homes built before 1986: 72% - older plumbing may contain lead solder.
  • Estimated remediation: $2,400 per household.
  • CDC health risk index: 14.42 - above typical levels.

Marion's Water Providers

Marion, WI runs on one primary water provider among the 1 federally tracked system. A single utility is responsible for the overwhelming share of residential supply - including the infrastructure, compliance filings, and rate schedules that govern service for most households.

Overview

We track home safety data for 1 ZIP code in Marion, Wisconsin, covering 1 community water system serving approximately 2,756 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Water Sources

Marion water systems draw from: Groundwater.

Lead & Copper

  • Average lead level (90th percentile): 0.0028 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status 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
54950 Marion Waterworks 1,293

All ZIP Codes in Marion

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Marion Community Health Snapshot

11.2%
Asthma (US: 9.8%)
12.9%
Diabetes (US: 10.4%)
16%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 11.2% ↑
Diabetes 12.9% ↑
Mental Health 16% ↑

Vertical line = national average. Above national · Below national

Marion Infrastructure Age

1978
Median Build Year
72%
Built Before 1986
40%
Built Before 1970
Copper
Likely Pipe Material

With 72% 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

While newer cities carry lower aggregate plumbing risk from lead-era construction, Marion sits firmly in the older category. The median build year of 1978 indicates that more than half the housing stock was built before 1986, when lead solder was still legally used in residential copper plumbing - and a substantial portion likely predates 1970, when lead pipes were still commonly installed for service lines. These two thresholds together define the elevated plumbing risk environment that older housing cities carry, independent of what the municipal water supply delivers to the meter.

1978
Median Year Built
72%
Pre-1986 (Lead Paint Risk)
40%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (40%) 1970–1986 (32%) Post-1986 (28%)

Over half of homes in Marion 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.

How Remediation Costs Compare in Marion

In Marion, the equity share of documented remediation is meaningful enough to move the household financial perspective from routine maintenance into deliberate budgeting territory - the cost-to-value ratio is moderate, and most homeowners benefit from mapping the full scope against available budgets before committing.

Median Home Value
$151,900
Est. Remediation
$2,400
Remediation as % of home value 1.6%

Remediation costs are moderate relative to home values in Marion. The estimated $1,600–$3,300 range is manageable for most homeowners but still worth budgeting for. Home values are 34% below the Wisconsin average.

Marion: Lead Risk & Vulnerable Populations

72%
Homes Built Before 1986
0.0028
mg/L Avg Lead (Limit: 0.015)

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.

Households with kids in the home - for whom CDC guidance places particular weight on minimizing exposure - face a specific local picture in Marion. 72% of homes here come from the pre-rule era, and aggregate utility samples either approach or cross 0.015 mg/L. A baseline draw-test kit and certified lead-removal filtration are available via retailer networks for households confirming conditions at a specific tap.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Marion: NFIP Claim Records and Water-Quality Context

4
Total FEMA Flood Claims
$63,684
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Marion contains 4 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $63,684. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

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. The <strong>$2,400</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

Frequently Asked Questions

Does Marion water have lead?
The average 90th-percentile lead level in Marion is 0.0028 mg/L. This is below the EPA action level of 0.015 mg/L. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Marion?
Marion is served by 1 public water system across 1 ZIP code, serving approximately 2,756 people.
How much does it cost to fix water issues in Marion?
Estimated remediation costs in Marion average $2,400 per household, ranging from $1,600 to $3,300. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesWisconsin → Marion, WI

How to cite this page

APA ZipCheckup. (2026). Marion, WI: High Radon Risk - Home Safety Score unavailable. https://zipcheckup.com/cities/wi/marion/
BibTeX
@misc{zipcheckup-cities-wi-marion,
  author = {{ZipCheckup}},
  title  = {{Marion, WI: High Radon Risk - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/wi/marion/}
}

Page version: August 2026.

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