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F0/100

ST MARTIN WATER DISTRICT 4 - CATAHOULA — Water Quality Report 2026

Serving 3,000 people · Louisiana

Water Source
Purchased Groundwater
County
—
System ID
LA1099004
Violations
43

Contaminant Test Results

2 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.40 mg/L1.30 mg/LOver Limit
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

6

Violations (last 5yr)

5

Unresolved

6

Health-Related

TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2025 – September 30, 2025Verify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2025 – June 30, 2025Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: January 1, 2025 – March 31, 2025Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: October 1, 2024 – December 31, 2024Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Unresolved

Exceeded the Maximum Contaminant Level (running average)

When: April 1, 2024 – June 30, 2024Enforcement: Formal — state order issuedVerify on EPA.gov
TIER 2Resolved

Exceeded the Maximum Contaminant Level (running average)

When: July 1, 2022 – September 30, 2022Enforcement: Formal — state order issued

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 ST MARTIN WATER DISTRICT 4 - CATAHOULA

Is ST MARTIN WATER DISTRICT 4 - CATAHOULA water safe to drink?

ST MARTIN WATER DISTRICT 4 - CATAHOULA water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 43 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has ST MARTIN WATER DISTRICT 4 - CATAHOULA detected?

2 contaminants were tested in ST MARTIN WATER DISTRICT 4 - CATAHOULA's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).

Does ST MARTIN WATER DISTRICT 4 - CATAHOULA have any EPA violations?

Yes, ST MARTIN WATER DISTRICT 4 - CATAHOULA has 43 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR, TT. 23 are health-based violations.

How many people does ST MARTIN WATER DISTRICT 4 - CATAHOULA serve?

ST MARTIN WATER DISTRICT 4 - CATAHOULA serves approximately 3,000 people, Louisiana.

What type of water does ST MARTIN WATER DISTRICT 4 - CATAHOULA provide?

ST MARTIN WATER DISTRICT 4 - CATAHOULA sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1099004.

How does ST MARTIN WATER DISTRICT 4 - CATAHOULA compare to other utilities in Louisiana?

ST MARTIN WATER DISTRICT 4 - CATAHOULA scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Louisiana state page for a full comparison of water systems.