Is Evansville, IL Tap Water Safe to Drink?
Graded C+ — but Lead and Copper were detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
65.2/100
waterverge.com Evansville, IL — Water Quality Report
Evansville's drinking water received a grade of C+ (65.2 out of 100), indicating fair water quality. The city's 1 water system serves approximately 700 residents using surface water.
Lead levels were measured at 17.0 ppb (90th percentile), which exceeds the EPA action level of 15 ppb. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 82 violations on record, including 13 health-based violations. 10 remain unresolved.
What to know about Evansville's water
Evansville ranks #780 out of 891 cities in Illinois for water quality, placing it among the lowest-rated in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
Lead levels exceed the EPA action level of 15 ppb, which typically indicates aging lead service lines or lead solder in the distribution system. An NSF 53-certified filter is strongly recommended for drinking and cooking water.
As a small community water system, Evansville may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Evansville, IL water safe to drink?
Evansville's drinking water has significant quality concerns based on EPA testing data. With a grade of C+ (65.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 700 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Evansville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Evansville's water quality assessment. Grade: C+ (65.2/100).
Contaminants: Simazine, Atrazine.
Contaminants: Chlorite.
Federal disaster declaration (FEMA DR-4461). Flood event — may have impacted local water infrastructure.
Contaminants: Public Notice.
Federal disaster declaration (FEMA DR-3230). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Evansville's water supply.
Exceeds EPA action level. Lead service line replacement and point-of-use filtration recommended.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Evansville's water system has 82 total violations on record, including 13 health-based violations. 10 remain unresolved. 3 violations were issued in the last 5 years.
Flood & environmental risk
Randolph County has experienced 7 federally declared disasters since 1969. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies. Local water sources include Kaskaskia River.
Where does Evansville's water come from?
Evansville's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 700 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Kaskaskia River (river).
What Evansville residents can do
Recommended: NSF 53-certified pitcher or under-sink filter. This addresses the specific contaminants found in Evansville's water.
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Evansville's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Evansville
Industrial polluters nearby
Reported releases to surface water by facilities near Evansville, ranked by pounds discharged annually.
Total reported releases to surface water: 393 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
BALDWIN ENERGY COMPLEX BALDWIN, IL62217 | Ammonia | 393 | 9.7 mi |
ROESLEIN MODULAR FABRICATION RED BUD, IL62278 | — | — | 9.4 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Randolph County has experienced 7 federally declared disasters since 1969. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Evansville's water supply, we recommend the following filter types.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 17.0 | 15 | ppb | Inorganic | Over Limit |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.87 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Evansville compares by contaminant
Explore where Evansville ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Evansville's water comes from
Evansville's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 700 people through 1 water system.
Water bodies near Evansville
Evansville is located near 1 notable water body. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Evansville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| EVANSVILLE | IL1570250 | 700 | SW |
How Evansville compares
Full Illinois rankings →Evansville's score of 65.2/100 is above the average of 56/100 among major Illinois cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Evansville, IL
Wikipedia →Evansville is a village in Randolph County, Illinois, United States, on the banks of the Kaskaskia River. The population was 547 at the 2020 census.
Learn more about your water
Guides and resources related to Evansville's water quality findings.
Explore water quality across Randolph
Frequently asked questions
Is Evansville, IL tap water safe to drink?
Evansville's water quality earned a grade of C+ (65.2/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #780 out of 891 cities tested in Illinois.
What contaminants are in Evansville's water?
Lead was measured at 17.0 ppb (90th percentile). 82 violations are on record.
How is Evansville's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Evansville?
Yes — lead levels exceed the EPA action level of 15 ppb. We recommend an NSF 53-certified filter or reverse osmosis system. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Evansville's water come from?
Evansville's water is sourced from Surface water. The city has 1 water system serving approximately 700 residents.
What health violations has Evansville's water system had?
Evansville has 13 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 10 violations remain unresolved.
How does Evansville's water compare to other cities?
Evansville ranks #780 out of 891 cities in Illinois (better than 12% of state cities) and #11562 out of 15744 cities nationally (27th percentile). The grade of C+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Evansville's small water system affect quality?
Evansville's system serves approximately 700 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 82 violations on record.