Carlisle, Pennsylvania: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 30 community water systems serving 44,066+ residents. See violations, PFAS results, lead test results, and safety grades — free.
EPA data last updated: 2026-06-23
Is Carlisle Tap Water Safe to Drink?
Carlisle has 30 community water systems. 28 of 30 graded systems meet all EPA standards (grade A or B), while 2 have recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
Carlisle Water Quality Overview
Carlisle, Pennsylvania is served by 30 community water systems providing water to approximately 44,066 residents. These systems draw from groundwater (28), surface water (2) sources. Carlisle water systems have recorded 30 health-based violations in their history, though none are currently active. Including monitoring and reporting violations, there are 1270 total violations on record.
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All 30 water systems in Carlisle
Looking for water quality data across the whole state? See our full Pennsylvania tap water safety report covering Pennsylvania’s EPA-regulated water systems.
Carlisle Drinking Water: Frequently Asked Questions
Is Carlisle, Pennsylvania tap water safe to drink?
Carlisle has 30 community water systems. 28 of 30 graded systems meet all EPA standards (grade A or B), while 2 have recorded violations. No active health-based violations are currently open. Check individual system reports below for specifics.
How many water utilities serve Carlisle, Pennsylvania?
30 community water systems serve Carlisle, Pennsylvania, providing water to approximately 44,066 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Carlisle tap water have lead?
Lead in drinking water typically enters from old pipes and fixtures inside homes and buildings, not from the treatment plant. The EPA requires water systems to monitor for lead under the Lead and Copper Rule. Click any water system above to see its most recent 90th-percentile lead test results. Homes built before 1986 are most likely to have lead plumbing components.
What contaminants have been found in Carlisle drinking water?
EPA violation records for Carlisle water systems are listed on each utility's report page. Common regulated contaminants include disinfection byproducts (TTHMs, HAA5), coliform bacteria, nitrates, and lead. Click any utility above to see its full violation history going back 10 years.
How do I find out which water company serves my address in Carlisle?
Enter your Carlisle ZIP code in the search box at the top of this page. ClearWater will identify the specific water system serving your area and show you its EPA violation history, lead test results, and an overall safety grade. You can also check your water bill or your utility's annual Consumer Confidence Report (CCR).