Waterloo

ZipCheckup's reading of EPA SDWIS for Waterloo (IL1330300): 29 EPA violations in the last five years. Looking at the EPA enforcement file for Waterloo, 29 violations appear in the five-year dataset, but none remain open - the utility has addressed each finding and is in current compliance, with no pending enforcement affecting the 10,190 people in its service area.

Data: EPA SDWIS

System Overview

Waterloo (EPA ID: IL1330300) is a community water system in Illinois that serves approximately 10,190 people from groundwater sources.

This system provides water to 5 ZIP codes across 5 communities.

Violation History

Status breakdown for accepted records with record years 2021-2026: 29 resolved, 0 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by IL or modeled from parcel and building-footprint data.

• 62236 - Columbia
• 62244 - Fults
• 62278 - Red Bud
• 62295 - Valmeyer
• 62298 - Waterloo

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Waterloo (IL1330300) on EPA.gov.

Frequently Asked Questions

Is Waterloo water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Waterloo; its 29 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does Waterloo serve?

Waterloo serves approximately 10,190 people across 5 ZIP codes in Illinois.

Where does Waterloo get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-il1330300,
  author = {{ZipCheckup}},
  title  = {{Waterloo (IL): 29 EPA Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/il1330300/}
}