Public water system · SD4600116

Active

Elk Point

At a glance

Elk Point (PWSID SD4600116) is an active community water system in Union County, South Dakota. It reports serving 2,124 people through 897 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, none is health-based, and the most recent began in January 2011.

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

Population served

2,124

Service connections

897

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDSD4600116

System typeCommunity water system

Activity statusActive

Population served2,124

Service connections897

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencySD state drinking water program

City servedElk Point

StateSouth Dakota

ZIP57025

CountyUnion County

How does Elk Point compare with other water systems in Union County?

By EPA's size categories, Elk Point is a small system (501 to 3,300 people). Union County has 8 active public water systems, and Elk Point is the 4th-largest of them by population served. Its population served is about 21% above the county average of 1,761 people per system, and accounts for 15% of the 14,087 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 Elk Point 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 Elk Point?

EPA lists Elk Point 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. 6 of the 8 active systems in Union County (75%) are also owned by a local government.

Does Elk Point have drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2011. The violations listed here began between January 2011 and January 2011. By type: 12 monitoring and reporting. The contaminants or rules involved are Di(2-ethylhexyl) phthalate, Polychlorinated biphenyls (PCBs), total, Heptachlor epoxide and Benzo(a)pyrene. 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
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Di(2-ethylhexyl) phthalatecode 2039	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Polychlorinated biphenyls (PCBs), totalcode 2383	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlor epoxidecode 2067	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Benzo(a)pyrenecode 2306	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Methoxychlorcode 2015	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Atrazinecode 2050	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Alachlor (Lasso)code 2051	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Hexachlorobenzenecode 2274	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Lindane (gamma-BHC)code 2010	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Chlordanecode 2959	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Heptachlorcode 2065	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Simazinecode 2037	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.

Elk Point: frequently asked questions

Who runs Elk Point?

Elk Point (PWSID SD4600116) is a community water system owned by a local government. It is regulated by the SD state drinking water program.

How many people does Elk Point serve?

Elk Point reports serving 2,124 people through 897 service connections in Union County, South Dakota.

Where does Elk Point 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 Elk Point have any drinking water violations?

Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2011. 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 Elk Point'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, none is health-based, and the most recent began in January 2011. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.

Where can I find Elk Point's water quality report?

As a community water system, Elk Point 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 Union County

Water system	County	Population served	Type	Source
Dakota Dunes Cid	Union	3,700	Community	Purchased groundwater under influence
North Sioux City	Union	3,042	Community	Groundwater
Beresford	Union	2,359	Community	Purchased groundwater
Clay Rws/South Union	Union	1,447	Community	Groundwater
Alcester	Union	820	Community	Purchased groundwater
Jefferson	Union	475	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, “Elk Point, PWSID SD4600116, South Dakota”, https://aquacensus.com/water-systems/south-dakota/elk-point-sd4600116 (data as of October 1, 2026).