A87/100
Lake Arthur Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 12,486 residents · Louisiana
What's In Lake Arthur's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
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 – May 24, 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
TOWN OF LAKE ARTHUR WATER SYSTEM
Population Served
2,706
Water Source
Groundwater
System ID
LA1053005
JEFF DAVIS WATER AND SEWER COMMISSION 1
Population Served
9,780
Water Source
Groundwater
System ID
LA1053014
Frequently Asked Questions About Lake Arthur Water
Is Lake Arthur tap water safe to drink?
Lake Arthur, Louisiana tap water receives a grade of A (87/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Lake Arthur's water?
Of the 31 contaminants tested in Lake Arthur'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 Lake Arthur have any water quality violations?
Yes, Lake Arthur has 14 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, MR, Other. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lake Arthur?
Lake Arthur 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 Lake Arthur's tap water come from?
Lake Arthur's drinking water is sourced from groundwater and supplied by TOWN OF LAKE ARTHUR WATER SYSTEM and 1 other water system(s). The system serves approximately 12,486 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Lake Arthur'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. Lake Arthur'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 Lake Arthur's water compare to other cities in Louisiana?
Lake Arthur's water quality score of 87/100 earns a grade of A, which is considered excellent. This places Lake Arthur 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 Lake Arthur's water quality?
If you have concerns about Lake Arthur'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 (TOWN OF LAKE ARTHUR WATER SYSTEM) 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.