Water Quality: Lake Barrington, IL
2 water systems • 2,800 people served
Some ConcernsWater Quality Summary
Lake Barrington is served by 2 public water systems with a combined service population of 2,800 people, and has 6 EPA Safe Drinking Water Act violations on record. Critically, 3 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Lake Barrington's violation count is 79% below the national average for Illinois. Contaminants associated with violations include Disinfection Byproducts, Stage 2 DBP.
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
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Lake Barrington
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| LAKE BARRINGTON SHORES SUBDIVSION | IL0975520 | Groundwater | 2,300 | 6 |
| LAKE BARRINGTON | IL0971080 | Groundwater | 500 | 0 |
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.