D33/100
Ossian Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 3,289 residents · Indiana
What's In Ossian's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – January 28, 2025Rule: Ground Water 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
OSSIAN MUNICIPAL WATER DEPARTMENT
Population Served
3,289
Water Source
Groundwater
System ID
IN5290002
Frequently Asked Questions About Ossian Water
Is Ossian tap water safe to drink?
Ossian, Indiana tap water receives a grade of D (33/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 60 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Ossian's water?
Of the 1 contaminants tested in Ossian'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 Ossian have any water quality violations?
Yes, Ossian has 60 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Ossian?
Ossian 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 Ossian's tap water come from?
Ossian's drinking water is sourced from groundwater and supplied by OSSIAN MUNICIPAL WATER DEPARTMENT. The system serves approximately 3,289 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Ossian'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. Ossian'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 Ossian's water compare to other cities in Indiana?
Ossian's water quality score of 33/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Indiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Ossian's water quality?
If you have concerns about Ossian'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 (OSSIAN MUNICIPAL WATER DEPARTMENT) 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.