Public water system · SC3710002
ActiveSeneca City of (Sc3710002)
At a glance
Seneca City of (Sc3710002) (PWSID SC3710002) is an active community water system in Oconee County, South Carolina. It reports serving 39,772 people through 18,176 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 2001.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
39,772
Service connections
18,176
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Seneca City of (Sc3710002) compare with other water systems in Oconee County?
By EPA's size categories, Seneca City of (Sc3710002) is a large system (10,001 to 100,000 people). Oconee County has 55 active public water systems, and Seneca City of (Sc3710002) is the largest of them by population served. Its population served is about 22 times the county average of 1,835 people per system, and accounts for 39% of the 100,931 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 Seneca City of (Sc3710002) is about 5.9 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 Seneca City of (Sc3710002)?
EPA lists Seneca City of (Sc3710002) 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. 6 of the 55 active systems in Oconee County (11%) are also owned by a local government.
Does Seneca City of (Sc3710002) have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 2001. The violations listed here began between June 1980 and April 2001. By type: 11 monitoring and reporting. The contaminant or rule involved most often is Nitrate (3 of them). EPA lists 9 as resolved and 2 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 |
|---|---|---|---|---|
| 2001-04-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 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 | 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 | Seleniumcode 1045 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1992-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1980-06-24 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
All 11 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.
Seneca City of (Sc3710002): frequently asked questions
Who runs Seneca City of (Sc3710002)?
Seneca City of (Sc3710002) (PWSID SC3710002) is a community water system owned by a local government. It is regulated by the SC state drinking water program.
How many people does Seneca City of (Sc3710002) serve?
Seneca City of (Sc3710002) reports serving 39,772 people through 18,176 service connections in Oconee County, South Carolina.
Where does Seneca City of (Sc3710002) 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 Seneca City of (Sc3710002) have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in April 2001. 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 Seneca City of (Sc3710002)'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 11 violations for this system; none is health-based, and the most recent began in April 2001. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find Seneca City of (Sc3710002)'s water quality report?
As a community water system, Seneca City of (Sc3710002) 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 Oconee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pioneer Rural Water Dist (Sc3720001) | Oconee | 16,929 | Community | Surface water |
| Walhalla City of (Sc3710004) | Oconee | 16,010 | Community | Surface water |
| Westminster City of (Sc3710003) | Oconee | 9,588 | Community | Surface water |
| Salem Town of (Sc3710001) | Oconee | 6,444 | Community | Purchased surface water |
| Keowee Key Utility System Inc. (3750023) | Oconee | 4,108 | Community | Purchased surface water |
| Foxwood Hills (Sc3750025) | Oconee | 1,703 | 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, “Seneca City of (Sc3710002), PWSID SC3710002, South Carolina”, https://aquacensus.com/water-systems/south-carolina/seneca-city-of-sc3710002-sc3710002 (data as of October 1, 2026).