CITY REPORT IL 1 HEALTH VIOLATIONS

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 with Violations
Zone 1
Radon Risk (High)
$219K
Median Home Value
$1,200
Est. Remediation (0.5% of home value)

Key Facts for Hennepin Residents

  • Your city's water systems recorded 3 violations in the past 5 years.
  • Average lead level: 0.0014 mg/L.
  • Homes built before 1986: 73% - older plumbing may contain lead solder.
  • Estimated remediation: $1,200 per household.
  • CDC health risk index: 13.62 - above typical levels.

Hennepin's Water Providers

Hennepin, IL 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 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 lead level (90th percentile): 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

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 4 1
Surface Water Treatment Rule Treatment Technique 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). Water contamination can correlate with respiratory and chronic health conditions.

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?

Stage 2 DBP Rule 4 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.

Hennepin Infrastructure Age

1975
Median Build Year
73%
Built Before 1986
26%
Built Before 1970
Copper
Likely Pipe Material

With 73% 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

Two dates define the high-risk tiers of residential plumbing from a lead standpoint: 1970, before which lead pipes were commonly installed for service connections, and 1986, before which lead solder was standard in copper plumbing. A median build year of 1975 places Hennepin's housing distribution well within that older risk zone. The bar chart above breaks down how much of the stock falls into each era - and the pre-1986 share alone represents more than half the residential inventory, making plumbing-era risk a defining characteristic of the local water safety picture.

1975
Median Year Built
73%
Pre-1986 (Lead Paint Risk)
26%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (26%) 1970–1986 (47%) Post-1986 (27%)

Over half of homes in Hennepin 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 Hennepin

How much of a Hennepin home's value does documented remediation represent? A small fraction - the equity share here is in the low tier, and from a household financial perspective, most property owners are considering a commitment that fits comfortably within standard planning rather than a decision that rises to the level of a material budget event or significant equity consideration.

Median Home Value
$219,000
Est. Remediation
$1,200
Remediation as % of home value 0.5%

Remediation costs in Hennepin are relatively low compared to home values. The $800–$1,800 estimated range is a small fraction of median property value. Home values are 19% above the Illinois average.

Hennepin: Lead Risk & Vulnerable Populations

73%
Homes Built Before 1986
0.0014
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.

Locally, 73% of Hennepin homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.

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 <strong>$1,200</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 Hennepin have?
Hennepin water systems have a total of 3 EPA violations, including 1 health-based violation. Violations are tracked across 1 ZIP code.
Does Hennepin water have lead?
The average 90th-percentile lead level in Hennepin is 0.0014 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 Hennepin?
Hennepin is served by 1 public water system across 1 ZIP code, serving approximately 1,341 people.
How much does it cost to fix water issues in Hennepin?
Estimated remediation costs in Hennepin average $1,200 per household, ranging from $800 to $1,800. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesIllinois → Hennepin, IL

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: August 2026.

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