D
41

Poor Water Quality

Geneseo, IL 61254

Henry County · Population served: 8,075 · Data updated March 2026

Water Systems Serving This Area

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GENESEO HICKORY HILLS HOA
Groundwater · Pop. 83
PWSID: IL0730080
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GENESEO
Groundwater · Pop. 6,539
PWSID: IL0730500
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COUNTRY ESTATES SUBDIVISION
Groundwater · Pop. 188
PWSID: IL0735050
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HAZELWOOD HEIGHTS SUBDIVISION
Groundwater · Pop. 235
PWSID: IL0735220
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HAZELWOOD WEST SUBDIVISION
Groundwater · Pop. 70
PWSID: IL0735250

Contaminants Detected

ContaminantDetected LevelEPA MCLHealth GuidelineStatus
Lead
7.7
15 ppb 1 ppb Warning
Copper
3900.0
1300 ppb 300 ppb Exceeded

PFAS / Forever Chemicals

1 detected All below limits
CompoundLevelEPA MCLHealth GuidelineStatus
PFBA8.4 pptNo standard500 pptUnregulated

Violation History (Last 5 Years)

86Total (5yr)
18Health-Based
17Major

Water Quality Summary

Understanding Your Water in Geneseo

Tap water quality in Geneseo, Illinois (61254) receives an overall grade of D (Poor) with a score of 41 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 33 points below the Illinois state average of 74. Compared to the national average (75), this area scores significantly lower. The area is served by 10 water systems providing water to approximately 8,075 people, using groundwater sources. Testing has found elevated levels of Lead, Copper that warrant attention. PFAS testing detected 1 compound, all currently below EPA limits. Over the past 5 years, water systems here have accumulated 86 violations, including 18 health-based violations.

Your Score 41/100 D
vs State 33 pts below Illinois avg (74)
vs National 34 pts below national avg (75)

What a Grade D Means

A score of 41/100 signals poor water quality in Geneseo, IL. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.

Groundwater: drawn from underground aquifers via wells

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.

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Copper in Your Water

Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.

Health Effects

Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.

Common Sources

Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.

What You Can Do

If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.

Common Questions

Frequently Asked Questions

Tap water in Geneseo, Illinois receives a grade of D (Poor) with a score of 41/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.

ZIP code 61254 is served by 10 water systems using groundwater sources, providing water to approximately 8,075 people. Groundwater is naturally filtered through rock and soil, often requiring less treatment. However, it can be vulnerable to contamination from underground sources like naturally occurring arsenic, nitrates from agriculture, or PFAS from industrial sites.

Lead was detected at 7.7 ppb in Geneseo, Illinois. While this is below the EPA action level of 15 ppb, it exceeds the health guideline of 1 ppb recommended by health organizations. Consider a certified lead filter, especially if you have young children.

1 PFAS compound were detected in water serving Geneseo, Illinois, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.

Water systems serving Geneseo, Illinois have received 86 violations in the last 5 years, including 18 health-based violations. 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.

Based on detected contaminants (lead, PFAS, copper), residents in Geneseo, Illinois should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.

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