- EPA's UCMR 5 testing looked for 30 contaminants here and found 6.
- PFOS (a PFAS): found in 4 of 12 samples, average 2.2 ppt, highest 8.4 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- PFPeA (a PFAS): found in 4 of 12 samples, average 1.7 ppt, highest 6 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- PFOA (a PFAS): found in 3 of 12 samples, average 1.2 ppt, highest 5.5 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- PFHxA (a PFAS): found in 3 of 12 samples, average 1.2 ppt, highest 5.1 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- PFBS (a PFAS): found in 3 of 12 samples, average 1 ppt, highest 4.4 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- PFBA (a PFAS): found in 2 of 12 samples, average 1 ppt, highest 6.3 ppt (EPA UCMR 5 testing, Feb 2024–Jan 2025)
- Lead, 90th percentile: 1 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2024–Dec 31, 2026). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Mount Pleasant, SC tap water: what EPA records show
EPA SC1010002 · serves Mount Pleasant, SC · about 91,500 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
MT Pleasant Waterworks (Sc1010002) (EPA SC1010002)
EPA data as of October 14, 2026. For Mount Pleasant's main utility, MT Pleasant Waterworks (Sc1010002): We found no health-based violations in EPA's records for this system (SC1010002) since July 1, 2021, as of October 14, 2026. EPA's UCMR 5 testing looked for 30 contaminants here and found 6. This is public data, not a test of your tap.
What EPA records show for MT Pleasant Waterworks (Sc1010002), as of October 14, 2026
We found no health-based violations in EPA's records for this system (SC1010002) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for MT Pleasant Waterworks (Sc1010002) (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 1 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2024–Dec 31, 2026). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 6.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does MT Pleasant Waterworks (Sc1010002) use chloramine?
EPA treatment records (state-reported) list chloramines for MT Pleasant Waterworks (Sc1010002). EPA record