CITY REPORT IL 4 HEALTH VIOLATIONS

Mendota, IL: 11 Violations - Home Safety Score unavailable

1 ZIP code · 2 water systems · Updated

Data: EPA SDWIS

1
ZIP Codes
2
Water Systems
1
ZIPs with Violations
$133K
Median Home Value
$6,180
Est. Remediation (4.7% of home value)

What You Should Know About Mendota Water

  • Your city's water systems recorded 11 violations in the past 5 years.
  • Average lead level: 0.0081 mg/L.
  • Homes built before 1986: 78% - older plumbing may contain lead solder.
  • Estimated remediation: $6,180 per household.
  • CDC health risk index: 13.79 - above typical levels.

Who Supplies Your Water in Mendota

2 independent water providers serve Mendota, IL - 2 systems appear in federal records.

  • La Salle
    Serves ~9,700 people 7 violations
  • Mendota
    Serves ~7,100 people 4 violations

Overview

We track home safety data for 1 ZIP code in Mendota, Illinois (population ~8,373), covering 2 community water systems serving approximately 16,800 people region-wide. 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. 4 health-based violations appear in the available health breakdown.

Water Sources

Mendota water systems draw from: Groundwater.

Lead & Copper

  • Average lead level (90th percentile): 0.0081 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Top Contaminants

Contaminant Category Violations ZIPs Affected
Haloacetic Acids (HAA5) Disinfection Byproducts 6 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 4 1
Stage 1 DBP Rule Treatment Technique 4 1
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
61342 11 4 Mendota

All ZIP Codes in Mendota

  • 61342 - 11 violations ⚠

Data Sources

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

Health Outcomes in Mendota

10.3%
Asthma (US: 9.8%)
12.4%
Diabetes (US: 10.4%)
17%
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 10.3% ↑
Diabetes 12.4% ↑
Mental Health 17% ↑

Vertical line = national average. Above national · Below national

Top Contaminants in Mendota Water

Haloacetic Acids (HAA5) 6 violations
Disinfection Byproducts · EPA limit: 0.06 mg/L
Increased cancer risk with long-term exposure
Total Trihalomethanes (TTHM) 4 violations
Disinfection Byproducts · EPA limit: 0.08 mg/L
Increased cancer risk with long-term exposure
Stage 1 DBP Rule 4 violations
Treatment Technique
Disinfection byproduct exposure risk

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

Housing & Infrastructure in Mendota

1951
Median Build Year
78%
Built Before 1986
52%
Built Before 1970
Galvanized Steel or Copper
Likely Pipe Material

With 78% 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

Because the majority of Mendota's housing predates 1986, when lead solder was banned from new plumbing, the median build year of 1951 reflects a city where lead-era plumbing materials are common rather than exceptional.

1951
Median Year Built
78%
Pre-1986 (Lead Paint Risk)
52%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (52%) 1970–1986 (26%) Post-1986 (22%)

Over half of homes in Mendota 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 Mendota Homeowners

Across the Mendota housing market, the estimated remediation share sits at an elevated level - the cost-to-value ratio here is high enough that addressing documented water and safety issues becomes a material equity decision rather than routine maintenance, and most homeowners benefit from treating it as a structured financial planning exercise.

Median Home Value
$132,700
Est. Remediation
$6,180
Remediation as % of home value 4.7%

At 4.7% of home value, remediation costs in Mendota represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $4,070–$8,640. Home values here are 28% below the Illinois average.

Lead Exposure Risk for Children in Mendota

78%
Homes Built Before 1986
0.0081
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.

Routinely in Mendota, where 78% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.

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

Historical NFIP Claim Context in Mendota

50
Total FEMA Flood Claims
$3,787
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Mendota contains 50 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $3,787. 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>$6,180</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 Mendota have?
Mendota water systems have a total of 11 EPA violations, including 4 health-based violations. Violations are tracked across 1 ZIP code.
Does Mendota water have lead?
The average 90th-percentile lead level in Mendota is 0.0081 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 Mendota?
Mendota is served by 2 public water systems across 1 ZIP code, serving approximately 8,373 people.
How much does it cost to fix water issues in Mendota?
Estimated remediation costs in Mendota average $6,180 per household, ranging from $4,070 to $8,640. Costs include filtration, pipe replacement, radon mitigation, and flood protection.
HomeCitiesIllinois → Mendota, IL

How to cite this page

APA ZipCheckup. (2026). Mendota, IL: 11 Violations - Home Safety Score unavailable. https://zipcheckup.com/cities/il/mendota/
BibTeX
@misc{zipcheckup-cities-il-mendota,
  author = {{ZipCheckup}},
  title  = {{Mendota, IL: 11 Violations - Home Safety Score unavailable}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/il/mendota/}
}

Page version: August 2026.

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