ZipCheckup grade for 60423: C.

A mixed picture - some signals here are worth your attention.

Your top priority: use a filter certified to reduce PFAS; check which ones. Check your ZIP → EPA PFAS info

Health Violations Found
C 67

Frankfort, IL (60423): 2 Health-Based Violations Recorded for Mapped Water Systems - 67/100

EPA data combined for 9 water systems mapped to this ZIP (largest mapped system: Frankfort)

Health Violations Found PFAS Detected

Health-based violation records by water system:

EPA records for the water systems mapped to 60423 in Frankfort, IL contain 67 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 2 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
C 67/100
Water Quality Issues 2 health-based violation records
Lead Risk Below action level 0.001 mg/L, 90th percentile, sample period ending 2025-12-31
NFIP Claim History Claim records 41 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 2 health-based violations and 65 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.001 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 2 - county-level radon potential, not a home measurement.
  • Flood 41 cumulative NFIP claim records. Check the current FEMA map for a specific address.
Contaminant Summary
Health Violations
67 violations 2 health-based PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
C
ZIP-level Home Safety model score: 67 / 100
Bottom 35% of U.S. ZIP codes
9
Water Systems
24,000
People Served
2
Health Violations (since 2021)Median is 0
Groundwater
Water Source
0.000981 mg/L
Reported Lead ResultBelow the national median of system results
Zone 2
County Radon Potential · Moderate
$377K
Median Home Value156% above state median ($147K)

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Score Breakdown

Overall Home Safety Score: 67/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
0/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
50/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
50/100
Indoor environment
50/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (8) CRITICAL

Your Water System

ZIP code 60423 in Frankfort, Illinois is mapped to the water system Frankfort (EPA ID: IL1970400). This system provides water to approximately 24,000 people from groundwater sources.

There are 9 community water systems serving this area.

Lead & Copper in Your Water

The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.

Metal Measured Level EPA Action Level Status Sample Date or Period
Copper Action-level exceedance on record 1.3 mg/L Exceeds action level Not present in ZipCheckup accepted source data
How to read the copper row. EPA's reporting schema defines the copper CU90 code as an action-level exceedance (a system's 90th-percentile copper above the 1.3 mg/L action level), so this row reflects an exceedance on record, not a routine measurement. No copper concentration is shown because no verified unit is available for this value. A system with no copper record has not been shown to be clean: the absence of a recorded exceedance is not a measurement.

Water Systems Serving This Area

System Name EPA ID Population Source
Frankfort IL1970400 24,000 Groundwater
Matteson IL0311800 18,293 Surface water
Gateway Mhp IL1970020 884 Groundwater
Il American-arbury IL1975040 1,225 Groundwater
Tinley Park IL0314910 56,703 Surface water

Other Water Quality Reports in Illinois

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Frankfort (IL1970400) on EPA.gov.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 60423.

Detected compounds: PFBS, PFHxA.

Highest measured level: 0.0053 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Frankfort

Based on local data for ZIP 60423, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Frankfort has 41 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 60423 safe to drink?

EPA SDWIS records 67 violations since 2021 across the water systems mapped to ZIP 60423 (primary system: Frankfort), including 2 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 60423's water come from?

The recorded water source for Frankfort, a system mapped to ZIP code 60423, is Groundwater. This system serves approximately 24,000 people.

How does Frankfort water compare to the national average?

Frankfort's Home Safety Score ranks lower than 65% of U.S. ZIP codes, and lower than 60% of ZIP codes within Illinois.

How can I get my water tested in Frankfort?

If Frankfort supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 60423 tap water?

The Lead and Copper Rule record selected for 60423 reports a 90th-percentile lead result of 0.000981 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 60423?

60423 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Will County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 60423's water?

Yes, PFAS have been detected in samples from water systems mapped to 60423. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

What does the NFIP claim history show for ZIP 60423?

FEMA records contain 41 flood insurance claims filed in ZIP code 60423; the recorded rated-zone value (the most frequent one if there are several claims) is A, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Frankfort, IL (60423): 2 Health-Based Violations Recorded for Mapped Water Systems - 67/100. https://zipcheckup.com/report/60423/
BibTeX 
@misc{zipcheckup-report-60423,
  author = {{ZipCheckup}},
  title  = {{Frankfort, IL (60423): 2 Health-Based Violations Recorded for Mapped Water Systems - 67/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/60423/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 60423

ZIP Code City, State Distance Grade Violations
60487 Tinley Park, IL 3.8 mi C 12
60448 Mokena, IL 3.8 mi B 51
60443 Matteson, IL 4.4 mi C 51
60477 Tinley Park, IL 5.2 mi C 14
60471 Richton Park, IL 5.6 mi C 47
60478 Country Club Hills, IL 6.4 mi C 24
60431 Joliet, IL 6.5 mi C 53
60449 Monee, IL 6.8 mi C 46
60451 New Lenox, IL 7.2 mi B 79
60467 Orland Park, IL 7.2 mi B 5

Contaminants Detected in 60423

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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