Is Lewisburg, LA tap water safe?
The short answer
None of the 4 utilities serving Lewisburg has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.
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 Lewisburg’s ZIP codes, from EPA’s estimates.
- Open report
St Tam Parish - Briarwood Terrace
Louisiana · serves 17,536 people · about 270 in Lewisburg
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 210 in Lewisburg
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 · under 100 in Lewisburg
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
Magnolia - Monterey Subdivision
Louisiana · serves 1,356 people · under 100 in Lewisburg
1 result above the health goal. The worst: Lead at 1.0 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.
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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 Lewisburg
The 3 labs Louisiana certifies closest to Lewisburg, 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 9 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 37 miles
Certified for bacteria
ZIP codes in Lewisburg
Which ZIP codes are in Lewisburg: 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 Lewisburg
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