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Is Seabrook Island, SC tap water safe?

4 utilities serve Seabrook Island, by EPA’s records. Here is what EPA’s and South Carolina’s records show for each, against the legal limits and the stricter health goals.

Matched to your utility using EPA records.

The short answer

1 of the 4 utilities serving Seabrook Island has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and South Carolina’s records: Charleston Water System.

St John'S Water, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: PFOS at 8.5 ppt, above EPA’s new limit, which takes effect in 2029.

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 Seabrook Island’s ZIP codes, from EPA’s estimates.

What handles it

Each of these is certified, on a certifier’s listing, for a result above a line in St John'S Water’s water, which serves the most people here. Another utility’s report names what handles its own results.

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Every claim, and more filters, in the full report

Water testing near Seabrook Island

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 South Carolina certifies.

The 3 labs South Carolina certifies closest to Seabrook Island, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.

  • GEL Laboratories LLC

    Charleston, SC · about 13 miles

    Certified for nitrate, lead and copper, metals, minerals and other inorganics, PFAS, radioactivity

    (843) 556-8171

  • Trident Labs Services Inc.

    Ladson, SC · about 27 miles

    Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics

    (843) 871-4999

  • Aquatic Analytics LLC

    Summerville, SC · about 32 miles

    Certified for bacteria, nitrate, minerals and other inorganics

    (843) 471-1933

All 36 certified labs for South Carolina

ZIP codes in Seabrook Island

Which ZIP codes are in Seabrook Island: 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: SCDES, Commercial Environmental Laboratory Mapping (CELMapp), labs certified under the Safe Drinking Water Act; distances from the Census 2020 ZIP code tabulation area gazetteer.

Near Seabrook Island

Other towns in Charleston County with a page of their own.

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