Public water system · SC3210004
ActiveWest Columbia City of (Sc3210004)
At a glance
West Columbia City of (Sc3210004) (PWSID SC3210004) is an active community water system in Lexington County, South Carolina. It reports serving 34,028 people through 15,789 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
34,028
Service connections
15,789
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does West Columbia City of (Sc3210004) compare with other water systems in Lexington County?
By EPA's size categories, West Columbia City of (Sc3210004) is a large system (10,001 to 100,000 people). Lexington County has 132 active public water systems, and West Columbia City of (Sc3210004) is the 2nd-largest of them by population served. Its population served is about 25 times the county average of 1,358 people per system, and accounts for 19% of the 179,280 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 West Columbia City of (Sc3210004) is about 5.1 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 53 South Carolina systems (3.8%) list surface water as their primary source.
Who owns and regulates West Columbia City of (Sc3210004)?
EPA lists West Columbia City of (Sc3210004) 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 132 active systems in Lexington County (9.8%) are also owned by a local government.
Does West Columbia City of (Sc3210004) have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016. The violations listed here began between July 1992 and April 2016. By type: 11 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2016-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2002-08-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 1992-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
The 12 most recent 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.
West Columbia City of (Sc3210004): frequently asked questions
Who runs West Columbia City of (Sc3210004)?
West Columbia City of (Sc3210004) (PWSID SC3210004) is a community water system owned by a local government. It is regulated by the SC state drinking water program.
How many people does West Columbia City of (Sc3210004) serve?
West Columbia City of (Sc3210004) reports serving 34,028 people through 15,789 service connections in Lexington County, South Carolina.
Where does West Columbia City of (Sc3210004) get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does West Columbia City of (Sc3210004) have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016. 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 West Columbia City of (Sc3210004)'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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find West Columbia City of (Sc3210004)'s water quality report?
As a community water system, West Columbia City of (Sc3210004) 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 Lexington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Joint Municipal WSC (Sc3220003) | Lexington | 47,838 | Community | Purchased surface water |
| Lexington Town of (3210001) | Lexington | 24,284 | Community | Purchased surface water |
| Cayce City of (Sc3210003) | Lexington | 17,460 | Community | Surface water |
| Gilbert-Summit Wd (3220001) | Lexington | 10,400 | Community | Groundwater |
| Gaston Rural Water Dist (Sc3220002) | Lexington | 7,550 | Community | Groundwater |
| Bgwc I-20 (Sc3250012) | Lexington | 7,146 | 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, “West Columbia City of (Sc3210004), PWSID SC3210004, South Carolina”, https://aquacensus.com/water-systems/south-carolina/west-columbia-city-of-sc3210004-sc3210004 (data as of October 1, 2026).