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Is Bay St. Louis, MS tap water safe?

City of Bay St Louis serves Bay St. Louis, by EPA’s records. Here is what EPA’s and Mississippi’s records show for it, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

City of Bay St Louis serves Bay St. Louis. In EPA’s and Mississippi’s records it has 1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark, and 5 health-based violations since 2016.

The worst: Total trihalomethanes (TTHM) at 68.4 ppb, above the legal limit.

Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in City of Bay St Louis’s water.

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Every claim, and more filters, in the full report

Water testing near Bay St. Louis

A utility tests the water it sends out. A test of your own tap shows what your pipes add, and on a private well it is the only test there is. It takes a lab Mississippi certifies.

The 3 labs Mississippi certifies closest to Bay St. Louis, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • Micro-Methods Laboratory

    Ocean Springs, MS · about 43 miles

    Certified for bacteria

    (228) 875-6420

  • Huntington Ingalls, Inc

    Pascagoula, MS · about 58 miles

    Certified for bacteria

  • Bonner Analytical Testing, Inc.

    Hattiesburg, MS · about 74 miles

    Certified for bacteria

    (601) 264-2854

Mississippi State Department of Health: Bacteria testing for private wells: apply online, and the department takes a sample from your well and tests it. It does not test for minerals or chemicals. $10 plus a processing fee, invoiced by email. Private Well Sample application, Mississippi State Department of Health.

All 5 certified labs for Mississippi

ZIP codes in Bay St. Louis

Which ZIP codes are in Bay St. Louis: 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: MSDH, water supply certification: in-state participating labs; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Bay St. Louis

Towns nearby with a page of their own.

What to do next