Public water system · SD4602203
ActiveThe Ranch at Black Gap
At a glance
The Ranch at Black Gap (PWSID SD4602203) is an active community water system in Pennington County, South Dakota. It reports serving 375 people through 125 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is health-based, and the most recent began in February 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
375
Service connections
125
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does The Ranch at Black Gap compare with other water systems in Pennington County?
By EPA's size categories, The Ranch at Black Gap is a very small system (500 people or fewer). Pennington County has 150 active public water systems. Its population served is about 60% below the county average of 930 people per system, and accounts for 0.3% of the 139,467 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 The Ranch at Black Gap 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 The Ranch at Black Gap?
EPA lists The Ranch at Black Gap 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. 134 of the 150 active systems in Pennington County (89%) are also privately owned.
Does The Ranch at Black Gap have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in February 2015. By type: 1 required treatment not met. The contaminant or rule involved is Stage 1 Disinfectants and Disinfection Byproducts Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 2015-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
The one violation in EPA's records.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.
The Ranch at Black Gap: frequently asked questions
Who runs The Ranch at Black Gap?
The Ranch at Black Gap (PWSID SD4602203) is a community water system privately owned. It is regulated by the SD state drinking water program.
How many people does The Ranch at Black Gap serve?
The Ranch at Black Gap reports serving 375 people through 125 service connections in Pennington County, South Dakota.
Where does The Ranch at Black Gap 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 The Ranch at Black Gap have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in February 2015. 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 The Ranch at Black Gap'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 one violation for this system; it is health-based, and the most recent began in February 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find The Ranch at Black Gap's water quality report?
As a community water system, The Ranch at Black Gap 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 Pennington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rapid City | Pennington | 72,009 | Community | Surface water |
| Box Elder | Pennington | 14,000 | Community | Groundwater |
| Rapid Valley Sanitary District | Pennington | 11,408 | Community | Surface water |
| Ellsworth Afb | Pennington | 9,100 | Community | Purchased surface water |
| Nps-Mount Rushmore National Memorial | Pennington | 4,100 | Non-transient non-community | Groundwater |
| Colonial Pine Hills Sanitary Distric | Pennington | 1,200 | 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, “The Ranch at Black Gap, PWSID SD4602203, South Dakota”, https://aquacensus.com/water-systems/south-dakota/the-ranch-at-black-gap-sd4602203 (data as of October 1, 2026).