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C51/100

CARLISLE WATER TRMT PLT — Water Quality Report 2026

Serving 26,000 people · Pennsylvania

Water Source
Surface Water
County
—
System ID
PA7210002
Violations
30

Contaminant Test Results

3 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
PFOS
0.008 µg/L0.004 µg/LOver Limit
PFOA
0.005 µg/L0.004 µg/LOver Limit
Lead (90th percentile)
0.011 mg/L0.015 mg/LAbove Goal

EPA Violation History

7

Violations (last 5yr)

0

Unresolved

0

Health-Related

TIER 3Resolved

Failed to complete routine monitoring

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

When: August 1, 2024 – August 31, 2024Rule: Surface Water Treatment RuleEnforcement: 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: August 1, 2024 – August 31, 2024Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: April 11, 2024 – May 31, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: April 11, 2024 – May 31, 2024Rule: Ground Water RuleEnforcement: 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: April 1, 2023 – June 30, 2023Rule: Stage 1 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: January 1, 2023 – March 31, 2023Rule: 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: January 1, 2023 – March 31, 2023Rule: 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 CARLISLE WATER TRMT PLT

Is CARLISLE WATER TRMT PLT water safe to drink?

CARLISLE WATER TRMT PLT water receives a grade of C (51/100), which is considered fair. 2 contaminant(s) exceed EPA legal limits and 30 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has CARLISLE WATER TRMT PLT detected?

69 contaminants were tested in CARLISLE WATER TRMT PLT's water. Notable contaminants include PFOS, PFOA, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).

Does CARLISLE WATER TRMT PLT have any EPA violations?

Yes, CARLISLE WATER TRMT PLT has 30 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other.

How many people does CARLISLE WATER TRMT PLT serve?

CARLISLE WATER TRMT PLT serves approximately 26,000 people, Pennsylvania.

What type of water does CARLISLE WATER TRMT PLT provide?

CARLISLE WATER TRMT PLT sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is PA7210002.

How does CARLISLE WATER TRMT PLT compare to other utilities in Pennsylvania?

CARLISLE WATER TRMT PLT scores 51/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Pennsylvania state page for a full comparison of water systems.