F1/100
Gretna Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 17,026 residents · Louisiana
What's In Gretna's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – June 15, 2022Enforcement: 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
GRETNA WATERWORKS
Population Served
17,026
Water Source
Surface Water
System ID
LA1051003
Frequently Asked Questions About Gretna Water
Is Gretna tap water safe to drink?
Gretna, Louisiana tap water receives a grade of F (1/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 23 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Gretna's water?
69 contaminants were tested in Gretna's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Gretna have any water quality violations?
Yes, Gretna has 23 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MCL. 19 of these are health-based violations, which are the most serious category.
Do I need a water filter in Gretna?
Gretna 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 Gretna's tap water come from?
Gretna's drinking water is sourced from surface water and supplied by GRETNA WATERWORKS. The system serves approximately 17,026 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Gretna'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. Gretna'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 Gretna's water compare to other cities in Louisiana?
Gretna's water quality score of 1/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Louisiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Gretna's water quality?
If you have concerns about Gretna'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 (GRETNA WATERWORKS) 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.