Public water system · SC1820001
ActiveDcwa Knightsville (Sc1820001)
At a glance
Dcwa Knightsville (Sc1820001) (PWSID SC1820001) is an active community water system in Dorchester County, South Carolina. It reports serving 40,141 people through 14,532 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; 3 are health-based, and the most recent began in May 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40,141
Service connections
14,532
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Dcwa Knightsville (Sc1820001) compare with other water systems in Dorchester County?
By EPA's size categories, Dcwa Knightsville (Sc1820001) is a large system (10,001 to 100,000 people). Dorchester County has 55 active public water systems, and Dcwa Knightsville (Sc1820001) is the 2nd-largest of them by population served. Its population served is about 13 times the county average of 3,010 people per system, and accounts for 24% of the 165,564 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 Dcwa Knightsville (Sc1820001) is about 6 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 Dcwa Knightsville (Sc1820001)?
EPA lists Dcwa Knightsville (Sc1820001) 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. 15 of the 55 active systems in Dorchester County (27%) are also owned by a local government.
Does Dcwa Knightsville (Sc1820001) have drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in May 2010. The violations listed here began between January 2005 and May 2010. By type: 3 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 of them). EPA lists 4 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2010-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2010-05-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2005-07-27 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
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.
Dcwa Knightsville (Sc1820001): frequently asked questions
Who runs Dcwa Knightsville (Sc1820001)?
Dcwa Knightsville (Sc1820001) (PWSID SC1820001) is a community water system owned by a local government. It is regulated by the SC state drinking water program.
How many people does Dcwa Knightsville (Sc1820001) serve?
Dcwa Knightsville (Sc1820001) reports serving 40,141 people through 14,532 service connections in Dorchester County, South Carolina.
Where does Dcwa Knightsville (Sc1820001) 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 Dcwa Knightsville (Sc1820001) have any drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in May 2010. 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 Dcwa Knightsville (Sc1820001)'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; 3 are health-based, and the most recent began in May 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find Dcwa Knightsville (Sc1820001)'s water quality report?
As a community water system, Dcwa Knightsville (Sc1820001) 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 Dorchester County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Summerville Cpw (Sc1810003) | Dorchester | 81,750 | Community | Purchased surface water |
| Dcws Ashley Phosphate (Sc1820008) | Dorchester | 26,536 | Community | Purchased surface water |
| St George Town of (Sc1810001) | Dorchester | 2,300 | Community | Groundwater |
| Dcws/Clay Field Drive (Sc1850014) | Dorchester | 1,648 | Community | Purchased surface water |
| Lieber Correctional Institute (1870050) | Dorchester | 1,646 | Community | Groundwater |
| Dcws Southern Palms (Sc1850011) | Dorchester | 1,494 | 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, “Dcwa Knightsville (Sc1820001), PWSID SC1820001, South Carolina”, https://aquacensus.com/water-systems/south-carolina/dcwa-knightsville-sc1820001-sc1820001 (data as of October 1, 2026).