A96/100
Nassau Bay Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 4,170 residents · Texas
What's In Nassau Bay's Tap Water?
34
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2024 – March 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
CITY OF NASSAU BAY
Population Served
4,170
Water Source
Purchased Surface Water
System ID
TX1010152
Frequently Asked Questions About Nassau Bay Water
Is Nassau Bay tap water safe to drink?
Nassau Bay, Texas tap water receives a grade of A (96/100), which is considered excellent. Out of 34 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 Nassau Bay's water?
34 contaminants were tested in Nassau Bay's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Nassau Bay have any water quality violations?
Yes, Nassau Bay has 4 EPA violation(s) on record, with the most recent in 2024. Violation types include MON, Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Nassau Bay?
Nassau Bay 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 Nassau Bay's tap water come from?
Nassau Bay's drinking water is sourced from purchased surface water and supplied by CITY OF NASSAU BAY. The system serves approximately 4,170 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Nassau Bay'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. Nassau Bay'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 Nassau Bay's water compare to other cities in Texas?
Nassau Bay's water quality score of 96/100 earns a grade of A, which is considered excellent. This places Nassau Bay among the better-performing water systems in Texas. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Nassau Bay's water quality?
If you have concerns about Nassau Bay'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 (CITY OF NASSAU BAY) 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.