Public water system · SC1010002
ActiveMt Pleasant Water Works (1010002)
At a glance
Mt Pleasant Water Works (1010002) (PWSID SC1010002) is an active community water system in Charleston County, South Carolina. It reports serving 91,500 people through 44,803 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in June 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
91,500
Service connections
44,803
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Mt Pleasant Water Works (1010002) compare with other water systems in Charleston County?
By EPA's size categories, Mt Pleasant Water Works (1010002) is a large system (10,001 to 100,000 people). Charleston County has 72 active public water systems, and Mt Pleasant Water Works (1010002) is the 2nd-largest of them by population served. Its population served is about 14 times the county average of 6,667 people per system, and accounts for 19% of the 480,015 people reported by systems filed under the county. Across South Carolina, the 1,392 active systems average 3,511 people each. Nationally, the average active community water system reports serving 6,703 people, so Mt Pleasant Water Works (1010002) is about 14 times that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. South Carolina has 567 active community water systems, 41% of the state's 1,392 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 368 South Carolina systems (26%) list purchased surface water as their primary source.
Who owns and regulates Mt Pleasant Water Works (1010002)?
EPA lists Mt Pleasant Water Works (1010002) as owned by a local government. The SC state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 13 of the 72 active systems in Charleston County (18%) are also owned by a local government.
Does Mt Pleasant Water Works (1010002) have drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in June 2020. The violations listed here began between June 1987 and June 2020. By type: 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminants or rules involved are E. coli, Total coliform bacteria (TCR), Lead and Copper Rule and Total trihalomethanes (TTHM). EPA lists 3 as resolved and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2020-06-18 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2006-06-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1987-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
All 4 violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Mt Pleasant Water Works (1010002): frequently asked questions
Who runs Mt Pleasant Water Works (1010002)?
Mt Pleasant Water Works (1010002) (PWSID SC1010002) is a community water system owned by a local government. It is regulated by the SC state drinking water program.
How many people does Mt Pleasant Water Works (1010002) serve?
Mt Pleasant Water Works (1010002) reports serving 91,500 people through 44,803 service connections in Charleston County, South Carolina.
Where does Mt Pleasant Water Works (1010002) get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Mt Pleasant Water Works (1010002) have any drinking water violations?
EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in June 2020. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Mt Pleasant Water Works (1010002)'s water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 4 violations for this system; 1 is health-based, and the most recent began in June 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find Mt Pleasant Water Works (1010002)'s water quality report?
As a community water system, Mt Pleasant Water Works (1010002) must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Charleston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Charleston Water System (Sc1010001) | Charleston | 327,422 | Community | Surface water |
| St John'S Water (Sc1020002) | Charleston | 22,592 | Community | Purchased surface water |
| Kiawah Island Utility (Sc1010008) | Charleston | 9,550 | Community | Purchased surface water |
| Isle of Palms W/S Comm (Sc1010004) | Charleston | 9,530 | Community | Purchased surface water |
| Seabrook Island Town of (1010009) | Charleston | 5,939 | Community | Purchased surface water |
| Folly Beach City of (1010005) | Charleston | 5,086 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Mt Pleasant Water Works (1010002), PWSID SC1010002, South Carolina”, https://aquacensus.com/water-systems/south-carolina/mt-pleasant-water-works-1010002-sc1010002 (data as of October 1, 2026).