Public water system · SD4602137
ActiveDot Rest Area - Whetstone Valley
At a glance
Dot Rest Area - Whetstone Valley (PWSID SD4602137) is an active transient non-community water system in Roberts County, South Dakota. It reports serving 1,000 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,000
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Dot Rest Area - Whetstone Valley compare with other water systems in Roberts County?
By EPA's size categories, Dot Rest Area - Whetstone Valley is a small system (501 to 3,300 people). Roberts County has 11 active public water systems, and Dot Rest Area - Whetstone Valley is the 2nd-largest of them by population served. Its population served is about 77% above the county average of 565 people per system, and accounts for 16% of the 6,217 people reported by systems filed under the county. Across South Dakota, the 699 active systems average 1,387 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Dot Rest Area - Whetstone Valley is about 6.9 times that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. South Dakota has 173 active transient non-community water systems, 25% 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 Dot Rest Area - Whetstone Valley?
EPA lists Dot Rest Area - Whetstone Valley as owned by a state government. 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 11 active systems in Roberts County (18%) are also owned by a state government.
Does Dot Rest Area - Whetstone Valley have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2013. The violations listed here began between September 2003 and November 2013. By type: 2 public notice, recordkeeping or other. 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 |
|---|---|---|---|---|
| 2013-11-25 | Public notice, recordkeeping or otherSanitary Survey (TCR) · code 28 | Not reported | No | Resolved |
| 2003-09-25 | Public notice, recordkeeping or otherSanitary Survey (TCR) · code 28 | Not reported | 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.
Dot Rest Area - Whetstone Valley: frequently asked questions
Who runs Dot Rest Area - Whetstone Valley?
Dot Rest Area - Whetstone Valley (PWSID SD4602137) is a transient non-community water system owned by a state government. It is regulated by the SD state drinking water program.
How many people does Dot Rest Area - Whetstone Valley serve?
Dot Rest Area - Whetstone Valley reports serving 1,000 people through 1 service connection in Roberts County, South Dakota.
Where does Dot Rest Area - Whetstone Valley 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 Dot Rest Area - Whetstone Valley have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in November 2013. 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 Dot Rest Area - Whetstone Valley'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 November 2013. For current results, consult EPA ECHO, or the SD state drinking water program.
Where can I find Dot Rest Area - Whetstone Valley's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Dot Rest Area - Whetstone Valley is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Roberts County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sisseton | Roberts | 2,479 | Community | Groundwater |
| Dot Rest Area 119 - Glacial Lakes | Roberts | 1,000 | Transient non-community | Groundwater |
| Wilmot | Roberts | 432 | Community | Purchased groundwater |
| Rosholt | Roberts | 379 | Community | Groundwater |
| Summit | Roberts | 288 | Community | Groundwater |
| New Effington | Roberts | 247 | Community | Purchased 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, “Dot Rest Area - Whetstone Valley, PWSID SD4602137, South Dakota”, https://aquacensus.com/water-systems/south-dakota/dot-rest-area-whetstone-valley-sd4602137 (data as of October 1, 2026).