Public water system · SD4600143
ActiveT C & G Rural Water System
At a glance
T C & G Rural Water System (PWSID SD4600143) is an active community water system in Dewey County, South Dakota. It reports serving 166 people through 79 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
166
Service connections
79
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does T C & G Rural Water System compare with other water systems in Dewey County?
By EPA's size categories, T C & G Rural Water System is a very small system (500 people or fewer). Dewey County has 5 active public water systems, and T C & G Rural Water System is the 4th-largest of them by population served. Its population served is well below the county average of 1,400 people per system, and accounts for 2.4% of the 7,000 people reported by systems filed under the county. Across South Dakota, the 699 active systems average 1,387 people each. Nationally, the average active community water system reports serving 6,703 people, so T C & G Rural Water System is well below 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 Dakota has 510 active community water systems, 73% of the state's 699 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 431 South Dakota systems (62%) list groundwater as their primary source.
Who owns and regulates T C & G Rural Water System?
EPA lists T C & G Rural Water System as privately owned. The SD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 5 active systems in Dewey County (40%) are also privately owned.
Does T C & G Rural Water System have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2021. The violations listed here began between January 2017 and May 2021. By type: 11 monitoring and reporting and 1 reporting. The contaminants or rules involved are Revised Total Coliform Rule, Pentachlorophenol, Hexachlorobenzene and Di(2-ethylhexyl) adipate. EPA lists 12 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 |
|---|---|---|---|---|
| 2021-05-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | 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.
T C & G Rural Water System: frequently asked questions
Who runs T C & G Rural Water System?
T C & G Rural Water System (PWSID SD4600143) is a community water system privately owned. It is regulated by the SD state drinking water program.
How many people does T C & G Rural Water System serve?
T C & G Rural Water System reports serving 166 people through 79 service connections in Dewey County, South Dakota.
Where does T C & G Rural Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does T C & G Rural Water System have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2021. 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 T C & G Rural Water System'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, none is health-based, and the most recent began in May 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find T C & G Rural Water System's water quality report?
As a community water system, T C & G Rural Water System 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 Dewey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eagle Butte | Dewey | 4,000 | Community | Purchased surface water |
| Tri-County Rural Water System | Dewey + 2 more | 2,190 | Community | Surface water |
| Timber Lake | Dewey | 499 | Community | Groundwater |
| Isabel | Dewey | 145 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “T C & G Rural Water System, PWSID SD4600143, South Dakota”, https://aquacensus.com/water-systems/south-dakota/t-c-g-rural-water-system-sd4600143 (data as of October 1, 2026).