A83/100
Dubois Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 22,581 residents · Indiana
What's In Dubois's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.007 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – August 21, 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
DUBOIS WATER UTILITIES
Population Served
9,078
Water Source
Purchased Surface Water
System ID
IN5219002
PATOKA LAKE REGIONAL WATER
Population Served
13,503
Water Source
Surface Water
System ID
IN5219012
Frequently Asked Questions About Dubois Water
Is Dubois tap water safe to drink?
Dubois, Indiana tap water receives a grade of A (83/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Dubois's water?
Of the 69 contaminants tested in Dubois's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Dubois have any water quality violations?
Yes, Dubois has 19 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, RPT, TT. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Dubois?
Dubois 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. 1 contaminant(s) exceed these stricter goals.
Where does Dubois's tap water come from?
Dubois's drinking water is sourced from purchased surface water and supplied by DUBOIS WATER UTILITIES and 1 other water system(s). The system serves approximately 22,581 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Dubois'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. Dubois'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 Dubois's water compare to other cities in Indiana?
Dubois's water quality score of 83/100 earns a grade of A, which is considered excellent. This places Dubois 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 Dubois's water quality?
If you have concerns about Dubois'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 (DUBOIS WATER UTILITIES) 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.