Water Quality: Mattoon, IL
3 water systems • 29,120 people served
Some ConcernsWater Quality Summary
Mattoon is served by 3 public water systems with a combined service population of 29,120 people, and has 11 EPA Safe Drinking Water Act violations on record. Critically, 2 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Mattoon's violation count is 62% below the national average for Illinois. Contaminants associated with violations include Disinfection Byproducts.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Water Systems Serving Mattoon
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MATTOON | IL0290250 | Surface Water | 19,500 | 5 |
| CLEAR WATER SERVICE CORP | IL0295100 | Groundwater | 8,900 | 2 |
| COOKS MILLS WATER ASSOCIATION | IL0295200 | Groundwater | 720 | 4 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Illinois
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.