B69/100
West Lafayette Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 50,000 residents · Indiana
What's In West Lafayette's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
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
PURDUE UNIV. WATER WORKS
Population Served
50,000
Water Source
Groundwater
System ID
IN5279015
Frequently Asked Questions About West Lafayette Water
Is West Lafayette tap water safe to drink?
West Lafayette, Indiana tap water receives a grade of B (69/100), which is considered good. Out of 66 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 West Lafayette's water?
66 contaminants were tested in West Lafayette's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does West Lafayette have any water quality violations?
Yes, West Lafayette has 27 EPA violation(s) on record, with the most recent in 2019. Violation types include MON, MR, Other. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in West Lafayette?
West Lafayette 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 West Lafayette's tap water come from?
West Lafayette's drinking water is sourced from groundwater and supplied by PURDUE UNIV. WATER WORKS. The system serves approximately 50,000 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is West Lafayette'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. West Lafayette'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 West Lafayette's water compare to other cities in Indiana?
West Lafayette's water quality score of 69/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Indiana state page to see how all cities in the state compare.
What should I do if I'm concerned about West Lafayette's water quality?
If you have concerns about West Lafayette'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 (PURDUE UNIV. WATER WORKS) 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.