TapSafetyReport
F18/100

St Rose Tap Water Quality: Is It Safe to Drink? (2026 Report)

Serving 1,688 residents · Illinois

What's In St Rose's Tap Water?

2
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.60 mg/L1.30 mg/LOver Limit

EPA Violation History

21

Violations (last 5yr)

6

Unresolved

2

Health-Related

TIER 3Unresolved

Reporting Violation

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

When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2025 – August 12, 2025Enforcement: Resolving — corrective action underway
TIER 3Unresolved

Monitoring / Reporting Violation

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

When: April 1, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: March 17, 2025 – May 8, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2025 – March 31, 2025Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 3Unresolved

Reporting violation

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

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Treatment technique violation

When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: October 12, 2024Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: October 12, 2024 – August 14, 2025Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: October 12, 2024 – August 14, 2025Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: October 12, 2024Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

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

When: October 1, 2024 – December 31, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

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

When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Unresolved

Surface water treatment technique failure

When: July 1, 2024Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

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

When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

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

When: July 1, 2023 – September 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

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

When: July 1, 2023 – September 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

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

When: July 1, 2023 – September 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the MCL for disinfection byproducts

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

When: July 1, 2023 – September 30, 2023Enforcement: Resolving — corrective action underway
TIER 3Unresolved

Surface water treatment technique failure

When: July 1, 2023Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Monitoring / Reporting Violation

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

When: December 30, 2022 – June 15, 2023Rule: Ground Water RuleEnforcement: 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

Water Utility Details

ST ROSE PWD
Population Served

1,688

Water Source

Purchased Surface Water

System ID

IL0275250

Frequently Asked Questions About St Rose Water

Is St Rose tap water safe to drink?

St Rose, Illinois tap water receives a grade of F (18/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 42 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.

What contaminants are in St Rose's water?

Of the 2 contaminants tested in St Rose's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.

Does St Rose have any water quality violations?

Yes, St Rose has 42 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MR. 8 of these are health-based violations, which are the most serious category.

Do I need a water filter in St Rose?

Based on EPA data, using a water filter in St Rose is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.

Where does St Rose's tap water come from?

St Rose's drinking water is sourced from purchased surface water and supplied by ST ROSE PWD. The system serves approximately 1,688 people. Surface water sources include rivers, lakes, and reservoirs.

How often is St Rose's water tested?

Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. St Rose's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.

How does St Rose's water compare to other cities in Illinois?

St Rose's water quality score of 18/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Illinois state page to see how all cities in the state compare.

What should I do if I'm concerned about St Rose's water quality?

If you have concerns about St Rose's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (ST ROSE PWD) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.

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