WaterViolations.org

Matteson

PWSID: IL0311800

System Details

Population Served	18,293
Service Connections	6,692
Water Source	Surface Water Purchased
System Type	Community Water System
Owner	Local Government
Status	Active
City	Matteson
Zip Code	60443

Areas Served

Matteson, Cook County

Lead & Copper Testing

Contaminant	Level	EPA Action Level	Status
Lead (90th percentile)	0.0051 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0049 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0048 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0026 mg/L	0.015 mg/L	Below Action Level

3 Active Violations

Contaminant	Violation	Date	Health-Based	Status
		2025-07-02		Open
		2025-07-01		Open
		2025-07-01		Open

Violation History (30 total)

Contaminant	Violation	Date	Health-Based	Status
		2024-10-01	Major	Acknowledged
		2024-10-01	Major	Acknowledged
		2024-10-01	Major	Returned to Compliance
		2024-10-01	Major	Acknowledged
		2024-10-01	Major	Acknowledged
		2024-10-01	Major	Returned to Compliance
		2024-08-13		Returned to Compliance
		2024-08-13		Returned to Compliance
		2024-08-13		Returned to Compliance
		2024-08-13		Returned to Compliance
		2024-08-13		Returned to Compliance
		2024-08-13		Returned to Compliance
		2023-05-01		Returned to Compliance
		2023-05-01		Returned to Compliance
		2023-05-01		Returned to Compliance
		2023-05-01		Acknowledged
		2023-05-01		Acknowledged
		2023-05-01		Returned to Compliance
		2023-04-01		Returned to Compliance
		2023-04-01		Returned to Compliance
		2023-04-01		Returned to Compliance
		2023-04-01		Acknowledged
		2023-04-01		Returned to Compliance
		2020-12-30		Returned to Compliance
		2020-12-30		Returned to Compliance
		2019-07-01		Returned to Compliance
		2019-07-01		Returned to Compliance