St Mary Parish Water Sewerage Commission 1
EPA ID: LA1101009 · 2,823 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for St Mary Parish Water Sewerage Commission 1 (LA1101009): 2 unresolved EPA violations on record. St Mary Parish Water Sewerage Commission 1 carry 2 open EPA violations that remain unresolved in the federal system - approximately 2,823 people fall within its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for St Mary Parish Water Sewerage Commission 1 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The St Mary Parish Water Sewerage Commission 1 serves a community with a median household income of $54,504 and an estimated 71,709 residents across its service area. Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 83% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
St Mary Parish Water Sewerage Commission 1's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Detected Contaminants
How St Mary Parish Water Sewerage Commission 1 compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 2 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Stage 1 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 7 detections recorded.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
St Mary Parish Water Sewerage Commission 1 (EPA ID: LA1101009) is a community water system in Louisiana that serves approximately 2,823 people from surface water sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 2 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| July 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Archived |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| November 18, 2023 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| July 1, 2021 | Surface Water Treatment Rule | Non-health-based | Resolved |
| January 30, 2021 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | Yes |
| Stage 1 DBP Rule | Treatment Failure | 2 | No |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | Yes |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00082 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by LA or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for St Mary Parish Water Sewerage Commission 1 (LA1101009) on EPA.gov.
Frequently Asked Questions
Is St Mary Parish Water Sewerage Commission 1 water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does St Mary Parish Water Sewerage Commission 1 serve?
St Mary Parish Water Sewerage Commission 1 serves approximately 2,823 people across 3 ZIP codes in Louisiana.
Where does St Mary Parish Water Sewerage Commission 1 get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). St Mary Parish Water Sewerage Commission 1: 7 EPA Violations. https://zipcheckup.com/water-system/la1101009/
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author = {{ZipCheckup}},
title = {{St Mary Parish Water Sewerage Commission 1: 7 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/la1101009/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
St Mary Parish Water Sewerage Commission 1 (EPA ID: LA1101009) - request the latest Consumer Confidence Report or ask about specific contaminants.