TapSafetyReport
B68/100

MILLSTONE PWD — Water Quality Report 2026

Serving 5,565 people · Illinois

Water Source
Groundwater
County
—
System ID
IL1515050
Violations
12

Contaminant Test Results

EPA Violation History

8

Violations (last 5yr)

1

Unresolved

4

Health-Related

TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2025 – September 30, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 1, 2024 – December 11, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to issue ongoing public notification

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 1, 2023 – July 3, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2023 – January 10, 2025Enforcement: Resolving — corrective action underway
TIER 2Resolved

Consumer confidence report — content deficiency

When: April 16, 2022 – April 27, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Other non-health-based violation

When: March 1, 2022 – March 16, 2022Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to conduct Level 2 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 30, 2021 – April 18, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed to conduct Level 2 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 8, 2021 – April 18, 2022Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About MILLSTONE PWD

Is MILLSTONE PWD water safe to drink?

MILLSTONE PWD water receives a grade of B (68/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.

What contaminants has MILLSTONE PWD detected?

31 contaminants were tested in MILLSTONE PWD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does MILLSTONE PWD have any EPA violations?

Yes, MILLSTONE PWD has 12 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, TT. 5 are health-based violations.

How many people does MILLSTONE PWD serve?

MILLSTONE PWD serves approximately 5,565 people, Illinois.

What type of water does MILLSTONE PWD provide?

MILLSTONE PWD sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IL1515050.

How does MILLSTONE PWD compare to other utilities in Illinois?

MILLSTONE PWD scores 68/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Illinois state page for a full comparison of water systems.