Public water system · SD4600610
ActiveCuster Mountain Campground
At a glance
Custer Mountain Campground (PWSID SD4600610) is an active transient non-community water system in Custer County, South Dakota. It reports serving 72 people through 34 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, 2 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
72
Service connections
34
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Custer Mountain Campground compare with other water systems in Custer County?
By EPA's size categories, Custer Mountain Campground is a very small system (500 people or fewer). Custer County has 49 active public water systems. Its population served is well below the county average of 274 people per system, and accounts for 0.5% of the 13,414 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 Custer Mountain Campground is about half of 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 Custer Mountain Campground?
EPA lists Custer Mountain Campground 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. 27 of the 49 active systems in Custer County (55%) are also privately owned.
Does Custer Mountain Campground have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in October 2024. The violations listed here began between July 1996 and October 2024. By type: 4 public notice, recordkeeping or other, 4 monitoring and reporting, 2 monitoring and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 8 as resolved and 4 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-10-06 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2013-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-07-10 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1997-09-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-08-17 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-07-13 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Custer Mountain Campground: frequently asked questions
Who runs Custer Mountain Campground?
Custer Mountain Campground (PWSID SD4600610) is a transient non-community water system privately owned. It is regulated by the SD state drinking water program.
How many people does Custer Mountain Campground serve?
Custer Mountain Campground reports serving 72 people through 34 service connections in Custer County, South Dakota.
Where does Custer Mountain Campground 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 Custer Mountain Campground have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in October 2024. 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 Custer Mountain Campground'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, 2 are health-based, and the most recent began in October 2024. For current results, consult EPA ECHO, or the SD state drinking water program.
Where can I find Custer Mountain Campground's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Custer Mountain Campground 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 Custer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Laughing Water Restaurant at Crazy H | Custer | 2,055 | Non-transient non-community | Groundwater |
| Custer | Custer | 1,919 | Community | Groundwater |
| Nps-Wind Cave National Park | Custer | 1,404 | Non-transient non-community | Groundwater |
| Southern Black Hills Water | Custer + 1 more | 947 | Community | Groundwater |
| Csp-Sylvan Lake | Custer | 799 | Transient non-community | Groundwater |
| Csp-Game Lodge | Custer | 541 | Transient non-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, “Custer Mountain Campground, PWSID SD4600610, South Dakota”, https://aquacensus.com/water-systems/south-dakota/custer-mountain-campground-sd4600610 (data as of October 1, 2026).