Magnolia-monterey Subdivision
EPA ID: LA1103148 · 1,356 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Magnolia-monterey Subdivision (LA1103148): no drinking-water violations recorded since 2021. Water monitoring for Magnolia-monterey Subdivision: no violations on record, 1,356 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Magnolia-monterey Subdivision Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Magnolia-monterey Subdivision have a median household income of $88,929 and about 25,851 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Magnolia-monterey Subdivision's water is classified in EPA records as a groundwater source. 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
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 | 2024-12-31 |
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.
- 70448 - Mandeville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records 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/}
}