B66/100
CITY OF DERIDDER WATER SYSTEM — Water Quality Report 2026
Serving 14,400 people · Louisiana
Water Source
Groundwater
County
—
System ID
LA1011001
Violations
7
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – January 10, 2025Rule: Ground Water 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
Frequently Asked Questions About CITY OF DERIDDER WATER SYSTEM
Is CITY OF DERIDDER WATER SYSTEM water safe to drink?
CITY OF DERIDDER WATER SYSTEM water receives a grade of B (66/100), which is considered good. Out of 67 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF DERIDDER WATER SYSTEM detected?
67 contaminants were tested in CITY OF DERIDDER WATER SYSTEM's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CITY OF DERIDDER WATER SYSTEM have any EPA violations?
Yes, CITY OF DERIDDER WATER SYSTEM has 7 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, MON, MR. 4 are health-based violations.
How many people does CITY OF DERIDDER WATER SYSTEM serve?
CITY OF DERIDDER WATER SYSTEM serves approximately 14,400 people, Louisiana.
What type of water does CITY OF DERIDDER WATER SYSTEM provide?
CITY OF DERIDDER WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1011001.
How does CITY OF DERIDDER WATER SYSTEM compare to other utilities in Louisiana?
CITY OF DERIDDER WATER SYSTEM scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Louisiana state page for a full comparison of water systems.