A92/100
Dayton Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,420 residents · Indiana
What's In Dayton's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
3
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
TIER 3Unresolved
Violation related to Turbidity
When: April 11, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2024 – October 31, 2024Rule: Total Coliform 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
DAYTON WATER UTILITY
Population Served
1,420
Water Source
Purchased Groundwater
System ID
IN5279021
Frequently Asked Questions About Dayton Water
Is Dayton tap water safe to drink?
Dayton, Indiana tap water receives a grade of A (92/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Dayton's water?
1 contaminants were tested in Dayton's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Dayton have any water quality violations?
Yes, Dayton has 8 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MON, MR. None of these are classified as health-based violations.
Do I need a water filter in Dayton?
Dayton water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Dayton's tap water come from?
Dayton's drinking water is sourced from purchased groundwater and supplied by DAYTON WATER UTILITY. The system serves approximately 1,420 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Dayton'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. Dayton'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 Dayton's water compare to other cities in Indiana?
Dayton's water quality score of 92/100 earns a grade of A, which is considered excellent. This places Dayton among the better-performing water systems in Indiana. Visit our Indiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Dayton's water quality?
If you have concerns about Dayton'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 (DAYTON WATER UTILITY) 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.