Is Mount Pleasant, SC tap water safe?
The short answer
MT Pleasant Waterworks serves Mount Pleasant. In EPA’s and South Carolina’s records it has 2 results above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal, and no health-based violation since 2016.
The worst: PFOS at 8.4 ppt, above EPA’s new limit, which takes effect in 2029.
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 MT Pleasant Waterworks’s water.
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ZeroWater 10 Cup Pitcher (ZP-010)
Pitcher
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53checked Oct. 4, 2026
Certified for: PFOS, PFOA, Lead
Aquasana Claryum Direct Connect (AQ-MF-1)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS, PFOA, Lead
Express Water StreamLine Direct Connect System (USC001)
Under-sink carbon
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 16, 2026
Certified for: PFOS, PFOA, Lead
Water testing near Mount Pleasant
The 3 labs South Carolina certifies closest to Mount Pleasant, 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 16 miles
Certified for nitrate, lead and copper, metals, minerals and other inorganics, PFAS, radioactivity
Trident Labs Services Inc.
Ladson, SC · about 21 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Aquatic Analytics LLC
Summerville, SC · about 27 miles
Certified for bacteria, nitrate, minerals and other inorganics
Which ZIP codes are in Mount Pleasant: 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 Mount Pleasant
Other towns in Charleston County with a page of their own.
What to do next
- Read MT Pleasant Waterworks’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOSRanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water