Magnolia-monterey Subdivision
EPA ID: LA1103148 · 1,356 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Magnolia-monterey Subdivision (LA1103148): no EPA violations recorded in the last five years. Five years of EPA monitoring have produced no violations for Magnolia-monterey Subdivision - the supplier serving 1,356 residents has kept every contaminant level within federal limits, a result that places it among the top-performing utilities for systems with a service population of comparable size.
Data: EPA SDWIS
Service Area Map
Coverage area for Magnolia-monterey Subdivision Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Magnolia-monterey Subdivision serves a community with a median household income of $88,929 and an estimated 25,851 residents across its service area.
💧 Where Does Your Water Come From?
Magnolia-monterey Subdivision'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
Magnolia-monterey Subdivision (EPA ID: LA1103148) is a community water system in Louisiana that serves approximately 1,356 people from groundwater sources.
This system serves ZIP code 70448 in Mandeville.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 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.
- 70448 - Mandeville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Magnolia-monterey Subdivision (LA1103148) on EPA.gov.
Frequently Asked Questions
Is Magnolia-monterey Subdivision water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Magnolia-monterey Subdivision 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 Magnolia-monterey Subdivision serve?
Magnolia-monterey Subdivision serves approximately 1,356 people across 1 ZIP code in Louisiana.
Where does Magnolia-monterey Subdivision get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Magnolia-monterey Subdivision Water Quality Report, LA. https://zipcheckup.com/water-system/la1103148/
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author = {{ZipCheckup}},
title = {{Magnolia-monterey Subdivision Water Quality Report, LA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/la1103148/}
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