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F0/100

ST JOSEPH WATER SYSTEM — Water Quality Report 2026

Serving 1,332 people · Louisiana

Water Source
Groundwater
County
—
System ID
LA1107004
Violations
60

Contaminant Test Results

3 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
1.40 mg/L1.30 mg/LOver Limit
manganese
354.00 µg/L—Above Goal
Lead (90th percentile)
0.003 mg/L0.015 mg/LAbove Goal

EPA Violation History

10

Violations (last 5yr)

6

Unresolved

5

Health-Related

TIER 2Resolved

Treatment technique violation

When: October 17, 2024 – January 17, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2024 – June 5, 2024Enforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: January 9, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Violation related to Consumer Confidence Report

When: November 27, 2023Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Violation related to Consumer Confidence Report

When: November 27, 2023Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Violation related to Consumer Confidence Report

When: November 27, 2023Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved

Violation related to Consumer Confidence Report

When: November 27, 2023Rule: Consumer Confidence RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: November 10, 2023Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: December 8, 2022 – February 9, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Monitoring / Reporting Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: October 20, 2021 – November 23, 2021Rule: 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 ST JOSEPH WATER SYSTEM

Is ST JOSEPH WATER SYSTEM water safe to drink?

ST JOSEPH WATER SYSTEM water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 60 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has ST JOSEPH WATER SYSTEM detected?

28 contaminants were tested in ST JOSEPH WATER SYSTEM's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), manganese. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).

Does ST JOSEPH WATER SYSTEM have any EPA violations?

Yes, ST JOSEPH WATER SYSTEM has 60 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, Other, MR. 20 are health-based violations.

How many people does ST JOSEPH WATER SYSTEM serve?

ST JOSEPH WATER SYSTEM serves approximately 1,332 people, Louisiana.

What type of water does ST JOSEPH WATER SYSTEM provide?

ST JOSEPH WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1107004.

How does ST JOSEPH WATER SYSTEM compare to other utilities in Louisiana?

ST JOSEPH WATER SYSTEM 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.