Public water system · SC4320006
ActiveOswego Rural Water Co (Sc4320006)
At a glance
Oswego Rural Water Co (Sc4320006) (PWSID SC4320006) is an active community water system in Sumter County, South Carolina. It reports serving 3,282 people through 1,361 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2012.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,282
Service connections
1,361
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Oswego Rural Water Co (Sc4320006) compare with other water systems in Sumter County?
By EPA's size categories, Oswego Rural Water Co (Sc4320006) is a small system (501 to 3,300 people). Sumter County has 24 active public water systems, and Oswego Rural Water Co (Sc4320006) is the 5th-largest of them by population served. Its population served is about 12% below the county average of 3,717 people per system, and accounts for 3.7% of the 89,203 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 Oswego Rural Water Co (Sc4320006) is about half of 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 38 South Carolina systems (2.7%) list purchased groundwater as their primary source.
Who owns and regulates Oswego Rural Water Co (Sc4320006)?
EPA lists Oswego Rural Water Co (Sc4320006) as privately owned. 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 24 active systems in Sumter County (63%) are also privately owned.
Does Oswego Rural Water Co (Sc4320006) have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2012. The violations listed here began between July 2009 and October 2012. By type: 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule and Consumer Confidence Rule. EPA lists 2 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 |
|---|---|---|---|---|
| 2012-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 2 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.
Oswego Rural Water Co (Sc4320006): frequently asked questions
Who runs Oswego Rural Water Co (Sc4320006)?
Oswego Rural Water Co (Sc4320006) (PWSID SC4320006) is a community water system privately owned. It is regulated by the SC state drinking water program.
How many people does Oswego Rural Water Co (Sc4320006) serve?
Oswego Rural Water Co (Sc4320006) reports serving 3,282 people through 1,361 service connections in Sumter County, South Carolina.
Where does Oswego Rural Water Co (Sc4320006) get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Oswego Rural Water Co (Sc4320006) have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2012. 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 Oswego Rural Water Co (Sc4320006)'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 2 violations for this system; none is health-based, and the most recent began in October 2012. For current results, consult the system's annual water quality report, EPA ECHO, or the SC state drinking water program.
Where can I find Oswego Rural Water Co (Sc4320006)'s water quality report?
As a community water system, Oswego Rural Water Co (Sc4320006) 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 Sumter County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sumter City of (Sc4310001) | Sumter | 53,070 | Community | Groundwater |
| High Hills Rural Water Co Inc. (4320003) | Sumter | 12,545 | Community | Groundwater |
| Shaw Afb (Sc4310501) | Sumter | 10,000 | Community | Groundwater |
| Dalzell Water District (Sc4320001) | Sumter | 3,912 | Community | Groundwater |
| Sumter Co-Wedgefield-Stateburg Wd | Sumter | 1,200 | Community | Groundwater |
| Bgwc Oakland Plantation (Sc4350006) | Sumter | 1,180 | Community | Groundwater |
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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, “Oswego Rural Water Co (Sc4320006), PWSID SC4320006, South Carolina”, https://aquacensus.com/water-systems/south-carolina/oswego-rural-water-co-sc4320006-sc4320006 (data as of October 1, 2026).