B71/100
ST MARY PARISH WATER SEWERAGE COMM 1 — Water Quality Report 2026
Serving 2,823 people · Louisiana
Water Source
Surface Water
County
—
System ID
LA1101009
Violations
17
Contaminant Test Results
EPA Violation History
5
Violations (last 5yr)
2
Unresolved
2
Health-Related
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
When: July 1, 2025 – September 30, 2025Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – April 22, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – June 26, 2024Enforcement: Resolving — corrective action underway
TIER 3Unresolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 18, 2023Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – June 29, 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
Frequently Asked Questions About ST MARY PARISH WATER SEWERAGE COMM 1
Is ST MARY PARISH WATER SEWERAGE COMM 1 water safe to drink?
ST MARY PARISH WATER SEWERAGE COMM 1 water receives a grade of B (71/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has ST MARY PARISH WATER SEWERAGE COMM 1 detected?
1 contaminants were tested in ST MARY PARISH WATER SEWERAGE COMM 1's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ST MARY PARISH WATER SEWERAGE COMM 1 have any EPA violations?
Yes, ST MARY PARISH WATER SEWERAGE COMM 1 has 17 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, TT, Other. 3 are health-based violations.
How many people does ST MARY PARISH WATER SEWERAGE COMM 1 serve?
ST MARY PARISH WATER SEWERAGE COMM 1 serves approximately 2,823 people, Louisiana.
What type of water does ST MARY PARISH WATER SEWERAGE COMM 1 provide?
ST MARY PARISH WATER SEWERAGE COMM 1 sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is LA1101009.
How does ST MARY PARISH WATER SEWERAGE COMM 1 compare to other utilities in Louisiana?
ST MARY PARISH WATER SEWERAGE COMM 1 scores 71/100 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.