A80/100
Dequincy Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 4,791 residents · Louisiana
What's In Dequincy's Tap Water?
51
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2009.
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
CALCASIEU PARISH WW DISTRICT 7
Population Served
4,791
Water Source
Groundwater
System ID
LA1019114
Frequently Asked Questions About Dequincy Water
Is Dequincy tap water safe to drink?
Dequincy, Louisiana tap water receives a grade of A (80/100), which is considered excellent. Out of 51 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 Dequincy's water?
51 contaminants were tested in Dequincy's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Dequincy have any water quality violations?
Yes, Dequincy has 4 EPA violation(s) on record, with the most recent in 2009. Violation types include MCL. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Dequincy?
Dequincy 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 Dequincy's tap water come from?
Dequincy's drinking water is sourced from groundwater and supplied by CALCASIEU PARISH WW DISTRICT 7. The system serves approximately 4,791 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Dequincy'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. Dequincy'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 Dequincy's water compare to other cities in Louisiana?
Dequincy's water quality score of 80/100 earns a grade of A, which is considered excellent. This places Dequincy among the better-performing water systems in Louisiana. Visit our Louisiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Dequincy's water quality?
If you have concerns about Dequincy'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 (CALCASIEU PARISH WW DISTRICT 7) 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.