St Mary Parish Water Sewerage Commission 1
EPA ID: LA1101009 · 2,823 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for St Mary Parish Water Sewerage Commission 1 (LA1101009): 2 violations recorded with unresolved status in the SDWIS data used. St Mary Parish Water Sewerage Commission 1 has 2 EPA violations listed as open in the reviewed federal record - 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
Demographics of ZIP Codes Served
The ZIP codes associated with St Mary Parish Water Sewerage Commission 1 have a median household income of $54,504 and about 71,709 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 83% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 7 detections recorded.
Comparable Water Systems
Similar-sized systems in Louisiana
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 Haloacetic Acids (HAA5) | Health-based | Archived |
| July 1, 2025 | Total Haloacetic Acids (HAA5) | Health-based | Archived |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| July 1, 2024 | Consumer Confidence Rule | Non-health-based | Resolved |
| November 18, 2023 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| July 1, 2021 | Consumer Confidence Rule | Non-health-based | Resolved |
| January 30, 2021 | Lead and Copper 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 Haloacetic Acids (HAA5) | MCL Violation | 2 | Yes |
| Lead and Copper Rule | Monitoring & Reporting | 2 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 2 | No |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique | 1 | Yes |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Long-term exposure is associated with increased cancer risk, including bladder cancer; possible reproductive effects At-risk groups: pregnant women, long-term consumers of chlorinated water.
Treatment options (verify a product is certified to reduce this contaminant): 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 |
|---|---|---|
| 0.0008 mg/L | No | 2025-12-31 |
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 available EPA compliance records 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/
@misc{zipcheckup-water-system-la1101009,
author = {{ZipCheckup}},
title = {{St Mary Parish Water Sewerage Commission 1: 7 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/la1101009/}
}
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.