CITY REPORT IL

Thomson, IL: 2 Violations - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs with Violations
Zone 1
Radon Risk (High)
$165K
Median Home Value
$3,000
Est. Remediation (1.8% of home value)

Thomson Water: The Quick Version

  • Your city's water systems recorded 2 violations in the past 5 years.
  • Homes built before 1986: 62% - older plumbing may contain lead solder.
  • Estimated remediation: $3,000 per household.
  • CDC health risk index: 14.57 - above typical levels.

Water Systems Serving Thomson

Because residential water in Thomson, IL flows primarily through a single utility, infrastructure decisions, rate-setting, and EPA compliance are all managed within one organizational structure. Federal records show 1 system active in the area, but one provider dominates the service landscape for most homes and apartments.

  • Savanna
    Serves ~3,020 people 2 violations

Overview

We track home safety data for 1 ZIP code in Thomson, Illinois, covering 1 community water system serving approximately 2,687 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Water Sources

Thomson water systems draw from: Groundwater.

Lead & Copper

  • Average lead level (90th percentile): 0.0000 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.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Stage 2 DBP Rule Treatment Technique 2 1
Surface Water Treatment Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
61285 2 0 Savanna

All ZIP Codes in Thomson

Data Sources

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

CDC Health Data for Thomson

10.1%
Asthma (US: 9.8%)
13.3%
Diabetes (US: 10.4%)
16.6%
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 10.1% ↑
Diabetes 13.3% ↑
Mental Health 16.6% ↑

Vertical line = national average. Above national · Below national

Key Contaminants Detected in Thomson

Stage 2 DBP Rule 2 violations
Treatment Technique
Disinfection byproduct exposure risk
Surface Water Treatment Rule 2 violations
Treatment Technique
Pathogens may not be adequately removed

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

How Old Is Thomson's Housing Stock?

1974
Median Build Year
62%
Built Before 1986
33%
Built Before 1970
Copper
Likely Pipe Material

With 62% 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

Lead solder was standard in copper plumbing until federally banned in 1986; lead pipes were common in service lines pre-1970. Thomson's median build year of 1974 reflects a housing stock where these older materials are a pervasive feature - not a rare legacy - of the residential plumbing landscape.

1974
Median Year Built
62%
Pre-1986 (Lead Paint Risk)
33%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (33%) 1970–1986 (29%) Post-1986 (38%)

Over half of homes in Thomson 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.

Thomson: Remediation Cost in Perspective

Remediation costs in Thomson represent a moderate share of typical home values - worth budgeting for carefully, though within reach for most homeowners who plan ahead.

Median Home Value
$165,200
Est. Remediation
$3,000
Remediation as % of home value 1.8%

Remediation costs are moderate relative to home values in Thomson. The estimated $2,000–$4,000 range is manageable for most homeowners but still worth budgeting for. Home values are 10% below the Illinois average.

Protecting Children from Lead in Thomson

62%
Homes Built Before 1986

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.

Even where utility-side monitoring meets Lead and Copper Rule requirements, the 62% pre-rule share in Thomson keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.

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

Historical Flood-Claim Evidence for Thomson

4
Total FEMA Flood Claims
$27,442
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Thomson contains 4 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $27,442. Among ZIP codes with claim records, 0% 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>$3,000</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

How many water violations does Thomson have?
Thomson water systems have a total of 2 EPA violations. Violations are tracked across 1 ZIP code.
How many water systems serve Thomson?
Thomson is served by 1 public water system across 1 ZIP code, serving approximately 2,687 people.
How much does it cost to fix water issues in Thomson?
Estimated remediation costs in Thomson average $3,000 per household, ranging from $2,000 to $4,000. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesIllinois → Thomson, IL

How to cite this page

APA ZipCheckup. (2026). Thomson, IL: 2 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/il/thomson/
BibTeX
@misc{zipcheckup-cities-il-thomson,
  author = {{ZipCheckup}},
  title  = {{Thomson, IL: 2 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/il/thomson/}
}

Page version: August 2026.

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