Is Mandeville, LA tap water safe?
The short answer
1 of the 8 utilities serving Mandeville has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Chahta Mobile Home Park.
St Tam Parish - Briarwood Terrace, which serves the most people here, has 3 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Mandeville’s ZIP codes, from EPA’s estimates.
- Open report
St Tam Parish - Briarwood Terrace
Louisiana · serves 17,536 people · about 2,200 in Mandeville
3 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
City of Mandeville Water Supply
Louisiana · serves 13,000 people · about 2,100 in Mandeville
2 results above the health goal. The worst: Lead at 1.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Utilities Inc - North Park Water Supply
Louisiana · serves 11,298 people · about 930 in Mandeville
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.1 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Beau Chene Water System
Louisiana · serves 4,650 people · about 860 in Mandeville
1 result above the health goal. The worst: Lead at 1.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Magnolia - Monterey Subdivision
Louisiana · serves 1,356 people · about 190 in Mandeville
1 result above the health goal. The worst: Lead at 1.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
St Tam Parish Pineland Park Subd
Louisiana · serves 2,500 people · under 100 in Mandeville
1 result above the health goal. The worst: Arsenic at 1.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Chahta Mobile Home Park
Louisiana · serves 180 people · under 100 in Mandeville
1 result above the health goal. The worst: Arsenic at 1.0 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Utilities Inc - Woodridge Subdivision
Louisiana · serves 1,590 people · under 100 in Mandeville
2 results above the health goal. The worst: Lead at 2.0 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in St Tam Parish - Briarwood Terrace’s water, which serves the most people here. Another utility’s report names what handles its own results.
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Mandeville
The 3 labs Louisiana certifies closest to Mandeville, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Water Test, Inc.
Covington, LA · about 8 miles
Certified for bacteria
Curtis Environmental Services, Inc.
LaPlace, LA · about 28 miles
Certified for minerals and other inorganics, disinfection byproducts
LDH Amite Regional Laboratory
Amite, LA · about 35 miles
Certified for bacteria
Which ZIP codes are in Mandeville: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: LDH, laboratories certified by Louisiana for drinking water analysis; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Mandeville
Other towns in St. Tammany Parish with a page of their own.
What to do next
- Read St Tam Parish - Briarwood Terrace’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for LeadRanked by certification and what they cost over five years.The best water filters for lead, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water