Westfield

PWSID: IL0230200

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2 active health-based violations
This system currently has unresolved violations for: 5000. These violations mean contaminant levels exceeded EPA limits or required treatment was not performed.

This system has more violations on record than 93% of water systems in Illinois.

Violation trend: 7.4 per year over the last 5 years, up from 1.2 per year in the previous 5.

System Details

Population Served	678
Service Connections	285
Water Source	Groundwater Purchased
System Type	Community Water System
Owner	Local Government
Status	Active
City	Westfield
EPA ZIP on File	62474

Areas Served

Westfield, Clark County

Lead & Copper Testing

Contaminant	Level	EPA Action Level	Status
Copper (90th percentile)	2.2000 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.9400 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.8300 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.8000 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.7700 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.7400 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.7000 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.7000 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.6000 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.4620 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.4120 mg/L	1.300 mg/L	Exceeds Action Level
Copper (90th percentile)	1.4000 mg/L	1.300 mg/L	Exceeds Action Level
Lead (90th percentile)	0.0035 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0013 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level
Lead (90th percentile)	0.0000 mg/L	0.015 mg/L	Below Action Level

6 Active Violations

Contaminant	Violation	Date	Health-Based	Status
7000	Other	2025-07-01		Open
5000	MR	2025-04-01		Open
7000	Other	2024-07-01		Open
7500	Other	2023-03-18		Open
5000	TT	2022-07-01	Yes	Open
5000	TT	2022-01-01	Yes	Open

Violation History (51 total)

Contaminant	Violation	Date	Health-Based	Status
7500	Other	2025-01-26		Returned to Compliance
7500	Other	2025-01-26		Returned to Compliance
2950	MR	2024-01-01	Major	Acknowledged
2950	MR	2024-01-01	Major	Acknowledged
2950	MR	2024-01-01	Major	Returned to Compliance
2456	MR	2024-01-01	Major	Acknowledged
2456	MR	2024-01-01	Major	Acknowledged
2456	MR	2024-01-01	Major	Returned to Compliance
8000	MON	2023-12-01	Major	Returned to Compliance
8000	MON	2023-12-01	Major	Returned to Compliance
8000	MON	2023-12-01	Major	Acknowledged
8000	MON	2023-12-01	Major	Returned to Compliance
0999	MR	2023-10-01	Major	Returned to Compliance
0999	MR	2023-10-01	Major	Returned to Compliance
0999	MR	2023-10-01	Major	Returned to Compliance
0999	MR	2023-10-01	Major	Acknowledged
0999	MR	2023-10-01	Major	Returned to Compliance
7000	Other	2023-07-01		Returned to Compliance
7000	Other	2023-07-01		Returned to Compliance
5000	MR	2022-09-29		Returned to Compliance
7500	Other	2022-08-20		Returned to Compliance
7500	Other	2022-08-20		Returned to Compliance
7000	Other	2022-07-01		Returned to Compliance
7000	Other	2022-07-01		Returned to Compliance
5000	MR	2022-04-01		Returned to Compliance
5000	MR	2022-04-01		Returned to Compliance
1017	MR	2022-01-01		Returned to Compliance
5000	MR	2022-01-01		Acknowledged
5000	MR	2022-01-01		Acknowledged
7000	Other	2021-07-01		Returned to Compliance
7000	Other	2021-07-01		Returned to Compliance
7000	Other	2020-07-01		Returned to Compliance
7500	Other	2020-03-12		Returned to Compliance
7500	Other	2019-08-12		Returned to Compliance
5000	TT	2019-07-01	Yes	Returned to Compliance
7000	Other	2019-07-01		Returned to Compliance
5000	MR	2019-01-01		Returned to Compliance
7000	Other	2014-07-01		Returned to Compliance
7000	Other	2011-07-01		Returned to Compliance
5000	MR	2011-01-02		Returned to Compliance
5000	MR	2009-10-01		Returned to Compliance
5000	MR	2008-10-01		Returned to Compliance
7000	Other	2005-07-01		Returned to Compliance
5000	MR	1999-01-01		Returned to Compliance
5000	TT	1994-02-23	Yes	Returned to Compliance

Understanding This Water System's Record

Westfield is a community water system water system that draws from groundwater purchased sources and serves a population of 678 in Westfield, Illinois. This page shows its complete compliance history as reported to the EPA's Safe Drinking Water Information System (SDWIS), the federal database that tracks every public water system in the United States.

What Do These Violations Mean?

Health-based violations mean the system exceeded an EPA maximum contaminant level (MCL) or failed to provide required treatment. These indicate potential health risks from contaminants like lead, arsenic, bacteria, nitrates, or disinfection byproducts. Non-health-based violations involve monitoring, reporting, or procedural requirements — the system missed a testing deadline or failed to notify customers, but contaminant levels were not necessarily unsafe.

What Should You Do?

Your water utility is required to publish an annual Consumer Confidence Report (CCR) that details test results and any violations. If your system has active health-based violations, consider a certified water filter rated for the specific contaminants involved. The contaminant guides on this site explain health risks and filter options for common pollutants. For the most current results, contact your water utility directly — EPA data can lag weeks or months behind real-time testing.