Public water system · SD4600598

Active

Three Forks Campground and Rv Park

At a glance

Three Forks Campground and Rv Park (PWSID SD4600598) is an active transient non-community water system in Pennington County, South Dakota. It reports serving 122 people through 62 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, 3 are health-based, and the most recent began in August 2025.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

122

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDSD4600598

System typeTransient non-community water system

Activity statusActive

Population served122

Service connections62

Primary water sourceGroundwater

Owner typePrivate

Primacy agencySD state drinking water program

City servedHill City

StateSouth Dakota

ZIP57745

CountyPennington County

How does Three Forks Campground and Rv Park compare with other water systems in Pennington County?

By EPA's size categories, Three Forks Campground and Rv Park is a very small system (500 people or fewer). Pennington County has 150 active public water systems. Its population served is well below the county average of 930 people per system, and accounts for less than 0.1% 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 transient non-community water system reports serving 144 people, so Three Forks Campground and Rv Park is about 15% below 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 Three Forks Campground and Rv Park?

EPA lists Three Forks Campground and Rv Park 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 Three Forks Campground and Rv Park have drinking water violations?

Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in August 2025. The violations listed here began between September 2010 and August 2025. By type: 5 public notice, recordkeeping or other, 3 monitoring and reporting, 2 required treatment not met, 1 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Public Notice (4 of them). EPA lists 10 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.

Began	Violation	Contaminant or rule	Health-based	Status
2025-08-09	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Unaddressed
2025-08-09	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Unaddressed
2025-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A	Revised Total Coliform Rulecode 8000	Yes	Resolved
2024-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2016-06-01	Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A	Revised Total Coliform Rulecode 8000	No	Resolved
2014-07-06	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2013-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2011-01-13	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2011-01-13	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2010-11-08	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2010-09-25	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	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.

Three Forks Campground and Rv Park: frequently asked questions

Who runs Three Forks Campground and Rv Park?

Three Forks Campground and Rv Park (PWSID SD4600598) is a transient non-community water system privately owned. It is regulated by the SD state drinking water program.

How many people does Three Forks Campground and Rv Park serve?

Three Forks Campground and Rv Park reports serving 122 people through 62 service connections in Pennington County, South Dakota.

Where does Three Forks Campground and Rv Park 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 Three Forks Campground and Rv Park have any drinking water violations?

Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in August 2025. 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 Three Forks Campground and Rv Park'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, 3 are health-based, and the most recent began in August 2025. For current results, consult EPA ECHO, or the SD state drinking water program.

Where can I find Three Forks Campground and Rv Park's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Three Forks Campground and Rv Park 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 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, “Three Forks Campground and Rv Park, PWSID SD4600598, South Dakota”, https://aquacensus.com/water-systems/south-dakota/three-forks-campground-and-rv-park-sd4600598 (data as of October 1, 2026).