CITY REPORT IL HEALTH VIOLATIONS: 1

Hennepin, IL: 3 Violations - Home Safety Score unavailable

1 ZIP code · 1 water system · Updated

Data: EPA SDWIS

1
ZIP Codes
1
Water Systems
1
ZIPs Linked to Systems with Violations
Zone 1
County Radon Potential (High)
$219K
Median Home Value
$300
Est. Remediation (0.1% of home value)

Key Facts for Hennepin Residents

  • Your city's water systems recorded 3 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0014 mg/L.
  • Homes built before 1986: 73% - older plumbing may contain lead solder.
  • Estimated remediation: $300 per household.
  • Health risk index (ZipCheckup composite of CDC data): 13.62.

Hennepin's Water Providers

Only a single entry appears in the water system list for Hennepin, IL; federal records tie 1 to the area.

Overview

We track home safety data for 1 ZIP code in Hennepin, Illinois, covering 1 community water system serving approximately 1,341 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. 1 health-based violation appear in the available health breakdown.

Water Sources

Hennepin water systems draw from: Groundwater.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0014 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

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Lead and Copper Rule Revisions Treatment Technique 4 1
Consumer Confidence Rule Reporting 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
61327 — 3 1 Lake Thunderbird Subdivsion

All ZIP Codes in Hennepin

  • 61327 - 3 violations ⚠

Data Sources

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

Hennepin Community Health Snapshot

9.9%
Asthma (US: 9.8%)
12.1%
Diabetes (US: 10.4%)
15.5%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 9.9% ↑
Diabetes 12.1% ↑
Mental Health 15.5% ↑

Vertical line = national average. ■ Above national · ■ Below national

What's in Hennepin's Water?

Lead and Copper Rule Revisions 4 violations
Treatment Technique
Consumer Confidence Rule 2 violations
Reporting

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

Hennepin Infrastructure Age

1975
Median Build Year
73%
Built Before 1986
35%
Built Before 1970
Copper
Likely Pipe Material

With 73% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

If you live in one of the pre-1986 homes in Hennepin, a certified lab test for lead is the direct way to learn what your tap delivers; the median build year of 1975 is only context.

1975
Median Year Built
73%
Pre-1986 (lead solder era; lead paint banned 1978)
35%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (35%) 1970–1986 (38%) Post-1986 (27%)

Over half of homes in Hennepin were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. 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 Hennepin

This section sets two area figures side by side for Hennepin: the median home value and an estimated remediation cost. Here the estimate equals no more than 1% of that value, which places the city in the low tier; it is an area estimate, and the cost for any one property can be higher or lower.

Median Home Value
$219,000
Est. Remediation
$300
Remediation as % of home value 0.1%

Estimated remediation costs in Hennepin can be compared with local home values. The $150–$600 estimated range can be set against the median property value; actual costs vary by home. Home values are 19% above the Illinois average.

Hennepin: Lead Risk & Vulnerable Populations

73%
Homes Built Before 1986
0.0014
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

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

Hennepin: NFIP Claim Records and Water-Quality Context

3
Total FEMA Flood Claims
$6,384
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Hennepin contains 3 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $6,384. 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 $300 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 violations are on record for water systems serving Hennepin?
EPA records list 3 EPA violations, including 1 health-based violation for Hennepin water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Hennepin water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Hennepin is 0.0014 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How many water systems serve Hennepin?
Our records map 1 water system to 1 ZIP code in Hennepin. The related population figure in our data is approximately 1,341 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Hennepin?
Estimated remediation cost per household in Hennepin: $300; modeled range $150 to $600. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Hennepin, IL: 3 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/il/hennepin/
BibTeX
@misc{zipcheckup-cities-il-hennepin,
  author = {{ZipCheckup}},
  title  = {{Hennepin, IL: 3 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/il/hennepin/}
}

Page version: October 2026.

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