B
82

Record-only indicator: B

Not a safety rating. Missing or old measurements can produce a high score.

Coverage: 2/2 mapped systems have a dated lead result; 0/2 have copper results; 1/2 have UCMR monitoring.

Mc Leansboro, IL 62859

Hamilton County · Population served: 3,958 · SDWIS 2026-07-21 · UCMR5 August 2026

Service-area evidence: EPA service-area records associate the listed system with this ZIP. Boundaries may still overlap or change.

Water Systems Serving This Area

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HAMILTON COUNTY WATER DISTRICT
Surface water · Pop. 3,958

Lead: 0.0 ppb; period end 12/31/2024. Copper: not available ppb; period end unknown.

PWSID: IL0651000
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MCLEANSBORO
Surface water · Pop. 2,812

Lead: 0.0 ppb; period end 12/31/2024. Copper: not available ppb; period end unknown.

PWSID: IL0650200

Reported lead and copper results

ContaminantReported value or boundHistorical comparison valueInterpretationStatus
Lead
0.0 ppbPeriod end: 12/31/2024
15 ppb Largest reported value or bound among mapped systems; not necessarily the largest actual concentration. At/below comparison value

PFAS / Forever Chemicals

1 detected Below comparison values

UCMR5 occurrence results are screening information, not a finding of regulatory compliance or noncompliance. PFAS rules and compliance dates are evolving.

CompoundLevelEPA MCLInterpretationStatus
PFBA6.0 pptNo standard500 pptNo federal MCL shown

Violation History (Last 5 Years)

11Total (5yr)
1Health-Based
5Major

Public-record summary

Understanding Your Water in Mc Leansboro

Record-only indicator — incomplete or old records can produce a high score. A score of 100 is not a safety finding. Coverage: 2/2 mapped systems have a dated lead result; 0/2 have copper results; 1/2 have UCMR monitoring. Tap water quality in Mc Leansboro, Illinois (62859) receives an record-only indicator of B (Moderate-low record-based concern) with a score of 82 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 18 points above the Illinois state average of 64. The area is served by 2 water systems providing water to approximately 3,958 people, using surface water sources. PFAS testing detected 1 compound, all below the EPA final MCL values used for comparison. Over the past 5 years, water systems here have accumulated 11 violations, including 1 health-based violations.

Record-only score 82/100 B
vs State ▲ 18 pts above Illinois avg (64)
Comparison limits No national safety ranking: coverage and service areas overlap.

What a Grade B Means

Grade B summarizes the records available to this model, not household safety. Missing, bounded or old measurements can produce a high score, including 100. Review coverage, dates and the current utility report before interpreting this indicator.

Surface water: sourced from rivers, lakes, or reservoirs

Health Information

What These Contaminants Mean for You

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Lead in Your Water

Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.

Health Effects

Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.

Common Sources

Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.

What You Can Do

If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.

Common Questions

Frequently Asked Questions

The record-only indicator is B (82/100). It cannot determine whether your tap water is safe. Missing, bounded or old measurements can produce a high score. Check the coverage and sampling dates below and your utility's current notices.

ZIP code 62859 is served by 2 water systems using surface water sources, providing water to approximately 3,958 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.

The largest reported lead value or bound is 0.0 ppb, for the sampling period ending 12/31/2024. This is a system-level 90th-percentile record, not a measurement at your tap. Compare the sampling date and original utility report before interpreting it.

1 PFAS compound were detected in water serving Mc Leansboro, Illinois, with no result above the individual comparison values shown here; some compounds have no individual federal MCL. This comparison is informational: federal compliance timelines and the status of some PFAS standards are still evolving. Activated carbon or reverse osmosis filters can reduce some PFAS when appropriately certified and maintained.

Water systems serving Mc Leansboro, Illinois have received 11 violations in the last 5 years, including 1 health-based violation. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.

This public-record indicator cannot select household treatment. Confirm your supplier, current utility report and tap-testing results first; match any treatment to a certified contaminant-reduction claim and follow its maintenance instructions.

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