Public water system · SD4600114

Active

Edgemont

At a glance

Edgemont (PWSID SD4600114) is an active community water system in Fall River County, South Dakota. It reports serving 725 people through 506 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2021.

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

Population served

725

Service connections

506

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDSD4600114

System typeCommunity water system

Activity statusActive

Population served725

Service connections506

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencySD state drinking water program

City servedEdgemont

StateSouth Dakota

ZIP57735

CountyFall River County

How does Edgemont compare with other water systems in Fall River County?

By EPA's size categories, Edgemont is a small system (501 to 3,300 people). Fall River County has 13 active public water systems, and Edgemont is the 3rd-largest of them by population served. Its population served is about 47% above the county average of 492 people per system, and accounts for 11% of the 6,400 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 Edgemont 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 Edgemont?

EPA lists Edgemont as owned by a local 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. 5 of the 13 active systems in Fall River County (38%) are also owned by a local government.

Does Edgemont have drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2021. The violations listed here began between October 2013 and October 2021. By type: 8 monitoring and reporting, 2 required treatment not met and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). 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
2021-10-20	Required treatment not metFailure To Address Deficiency · code 45	Groundwater Rulecode 0700	Yes	Resolved
2021-09-05	Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A	Revised Total Coliform Rulecode 8000	Yes	Resolved
2015-05-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2015-03-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2014-07-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-07-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2014-06-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-04-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2014-01-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2014-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2013-12-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2013-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	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.

Edgemont: frequently asked questions

Who runs Edgemont?

Edgemont (PWSID SD4600114) is a community water system owned by a local government. It is regulated by the SD state drinking water program.

How many people does Edgemont serve?

Edgemont reports serving 725 people through 506 service connections in Fall River County, South Dakota.

Where does Edgemont 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 Edgemont have any drinking water violations?

Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 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 Edgemont'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, 4 are health-based, and the most recent began in October 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 Edgemont's water quality report?

As a community water system, Edgemont 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 Fall River County

Water system	County	Population served	Type	Source
Hot Springs	Fall River	3,395	Community	Groundwater
Fall River Wud	Fall River	1,057	Community	Groundwater
Hot Springs Va Center	Fall River	445	Community	Groundwater
State Veterans Home	Fall River	205	Non-transient non-community	Groundwater
Paradise Cove, LLC	Fall River	167	Transient non-community	Groundwater
Oelrichs	Fall River	117	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, “Edgemont, PWSID SD4600114, South Dakota”, https://aquacensus.com/water-systems/south-dakota/edgemont-sd4600114 (data as of October 1, 2026).