St Tam Parish - Briarwood Terrace
EPA ID: LA1103079 · 17,536 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for St Tam Parish - Briarwood Terrace (LA1103079): no EPA violations recorded in the last five years. From the earliest to the most recent cycle in the five-year EPA window, St Tam Parish - Briarwood Terrace has logged zero violations - no MCL exceedances, no health advisories, and no enforcement activity across the entire period for the 17,536 people in its service area, a record that stands up well against both state and national benchmarks.
Data: EPA SDWIS
Service Area Map
Coverage area for St Tam Parish - Briarwood Terrace Source: EPA SDWIS service area boundaries.
Service area boundary - Grade A
Service Area Demographics
The St Tam Parish - Briarwood Terrace serves a community with a median household income of $88,929 and an estimated 91,366 residents across its service area.
💧 Where Does Your Water Come From?
St Tam Parish - Briarwood Terrace's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
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 Tam Parish - Briarwood Terrace (EPA ID: LA1103079) is a community water system in Louisiana that serves approximately 17,536 people from groundwater sources.
This system provides water to 3 ZIP codes across 2 communities.
ZIP-Area Home Safety Context: A (97/100)
This is the average Home Safety Score for 1 of 3 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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 Tam Parish - Briarwood Terrace (LA1103079) on EPA.gov.
Frequently Asked Questions
Is St Tam Parish - Briarwood Terrace water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for St Tam Parish - Briarwood Terrace in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does St Tam Parish - Briarwood Terrace serve?
St Tam Parish - Briarwood Terrace serves approximately 17,536 people across 3 ZIP codes in Louisiana.
Where does St Tam Parish - Briarwood Terrace get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). St Tam Parish - Briarwood Terrace, LA: Serves 18K People. https://zipcheckup.com/water-system/la1103079/
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