C40/100
Greencastle Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 15,204 residents · Indiana
What's In Greencastle's Tap Water?
72
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – August 10, 2023Enforcement: 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
GREENCASTLE DEPARTMENT OF WATER
Population Served
12,699
Water Source
Groundwater Under Influence of Surface Water
System ID
IN5267004
PUTNAMVILLE CORRECTIONAL FACILITY
Population Served
2,505
Water Source
Purchased Groundwater
System ID
IN5267005
Frequently Asked Questions About Greencastle Water
Is Greencastle tap water safe to drink?
Greencastle, Indiana tap water receives a grade of C (40/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 76 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Greencastle's water?
Of the 73 contaminants tested in Greencastle's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Greencastle have any water quality violations?
Yes, Greencastle has 76 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, MR, Other. 8 of these are health-based violations, which are the most serious category.
Do I need a water filter in Greencastle?
Based on EPA data, using a water filter in Greencastle 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 Greencastle's tap water come from?
Greencastle's drinking water is sourced from groundwater under influence of surface water and supplied by GREENCASTLE DEPARTMENT OF WATER and 1 other water system(s). The system serves approximately 15,204 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Greencastle'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. Greencastle'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 Greencastle's water compare to other cities in Indiana?
Greencastle's water quality score of 40/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Indiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Greencastle's water quality?
If you have concerns about Greencastle'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 (GREENCASTLE DEPARTMENT OF WATER) 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.