Is Crainville, IL Tap Water Safe to Drink?
Graded A-, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
85.2/100
waterverge.com Crainville, IL — Water Quality Report
Crainville's drinking water received a grade of A- (85.2 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,711 residents using purchased surface water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 18 violations on record, including 2 health-based violations. 5 remain unresolved.
What to know about Crainville's water
Crainville ranks #380 out of 891 cities in Illinois for water quality, placing it mid-range 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.
As a small community water system, Crainville may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Crainville, IL water safe to drink?
Crainville's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (85.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,711 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Crainville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Crainville's water quality assessment. Grade: A- (85.2/100).
Contaminants: Revised Total Coliform Rule, Chloramine.
Contaminants: Total Haloacetic Acids (HAA5).
Contaminants: Revised Total Coliform Rule, Chloramine.
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 Crainville's water supply.
Well within EPA limits.
Violation history
Crainville's water system has 18 total violations on record, including 2 health-based violations. 5 remain unresolved. 5 violations were issued in the last 5 years.
Flood & environmental risk
Williamson County has experienced 1 federally declared disaster since 2005. 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 Big Muddy River.
Where does Crainville's water come from?
Crainville's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 1,711 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Big Muddy River (river).
What Crainville residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Crainville'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.
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 Crainville
Industrial polluters nearby
Reported releases to surface water by facilities near Crainville, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
INTERTAPE POLYMER CORP CARBONDALE, IL62901 | — | — | 8.5 mi |
DIAGRAPH MARKING & CODING MARION, IL62959 | — | — | 2.5 mi |
GENERAL DYNAMICS ORDNANCE & TACTICAL SYSTEMS INC I AREA MARION, IL62959 | — | — | 2.2 mi |
AISIN MANUFACTURING ILLINOIS LLC MARION, IL62959 | — | — | 3.6 mi |
REACO BATTERY SERVICE JOHNSTON CITY, IL62951 | — | — | 9.4 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Crainville
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- SANGAMO ELECTRIC DUMP CRAB ORCHARD NATIONAL WILDLIFE REFUGE USDOI4.8 mi
Source: EPA Superfund National Priorities List
Drought conditions
D1 — moderate droughtWilliamson County is currently in D1 (moderate drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Williamson County has experienced 1 federally declared disaster since 2005. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Crainville compares by contaminant
Explore where Crainville ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Crainville's water comes from
Crainville'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 1,711 people through 1 water system.
Water bodies near Crainville
Crainville 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 Crainville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CRAINVILLE | IL1990250 | 1,711 | SWP |
How Crainville compares
Full Illinois rankings →Crainville's score of 85.2/100 is above the average of 56/100 among major Illinois cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Crainville, IL
Wikipedia →Crainville is a village in Williamson County, Illinois, United States. As of the 2020 census, Crainville had a population of 1,443.
Learn more about your water
Guides and resources related to Crainville's water quality findings.
Explore water quality across Williamson
Frequently asked questions
Is Crainville, IL tap water safe to drink?
Crainville's water quality earned a grade of A- (85.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #380 out of 891 cities tested in Illinois.
What contaminants are in Crainville's water?
Lead was measured at 0.0 ppb (90th percentile). 18 violations are on record.
How is Crainville'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 Crainville?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Crainville's water come from?
Crainville's water is sourced from Purchased surface water. The city has 1 water system serving approximately 1,711 residents.
What health violations has Crainville's water system had?
Crainville has 2 health-based violations on record. The most recent violation was recorded in January 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 5 violations remain unresolved.
How does Crainville's water compare to other cities?
Crainville ranks #380 out of 891 cities in Illinois (better than 57% of state cities) and #5464 out of 15744 cities nationally (65th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Crainville's small water system affect quality?
Crainville's system serves approximately 1,711 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 18 violations on record.