Public water system · SD4600125

Active

Faulkton

At a glance

Faulkton (PWSID SD4600125) is an active community water system in Faulk County, South Dakota. It reports serving 693 people through 450 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in February 2019.

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

Population served

693

Service connections

450

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDSD4600125

System typeCommunity water system

Activity statusActive

Population served693

Service connections450

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencySD state drinking water program

City servedFaulkton

StateSouth Dakota

ZIP57438

CountyFaulk County

How does Faulkton compare with other water systems in Faulk County?

By EPA's size categories, Faulkton is a small system (501 to 3,300 people). Faulk County has 6 active public water systems, and Faulkton is the largest of them by population served. Its population served is about 3.5 times the county average of 201 people per system, and accounts for 58% of the 1,204 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 Faulkton 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 142 South Dakota systems (20%) list purchased surface water as their primary source.

Who owns and regulates Faulkton?

EPA lists Faulkton 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. 3 of the 6 active systems in Faulk County (50%) are also owned by a local government.

Does Faulkton have drinking water violations?

EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in February 2019. The violations listed here began between July 1976 and February 2019. By type: 5 required treatment not met, 2 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 6 as resolved and 2 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
2019-02-01	Required treatment not metTreatment Technique No Certif. Operator · code 12	Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400	Yes	Resolved
2010-08-02	Required treatment not metPublic Education · code 65	Lead and Copper Rulecode 5000	Yes	Resolved
2010-02-03	Required treatment not metPublic Education · code 65	Lead and Copper Rulecode 5000	Yes	Resolved
2009-08-07	Required treatment not metPublic Education · code 65	Lead and Copper Rulecode 5000	Yes	Resolved
1999-01-01	Required treatment not metPublic Education · code 65	Lead and Copper Rulecode 5000	Yes	Resolved
1998-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1976-07-01	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Archived
1976-07-01	Monitoring and reportingMonitoring, Regular · code 03	Combined Radium (-226 and -228)code 4010	No	Archived

All 8 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.

Faulkton: frequently asked questions

Who runs Faulkton?

Faulkton (PWSID SD4600125) is a community water system owned by a local government. It is regulated by the SD state drinking water program.

How many people does Faulkton serve?

Faulkton reports serving 693 people through 450 service connections in Faulk County, South Dakota.

Where does Faulkton get its water?

EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.

Does Faulkton have any drinking water violations?

EPA's records list 8 violations for this system; 6 are health-based, and the most recent began in February 2019. 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 Faulkton'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 8 violations for this system; 6 are health-based, and the most recent began in February 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.

Where can I find Faulkton's water quality report?

As a community water system, Faulkton 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 Faulk County

Water system	County	Population served	Type	Source
Brentwood Colony	Faulk	137	Community	Groundwater
Blumengard Colony	Faulk	133	Community	Groundwater
Evergreen Colony	Faulk	120	Community	Groundwater
Cresbard	Faulk	96	Community	Purchased surface water
Seneca	Faulk	25	Community	Purchased surface water

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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, “Faulkton, PWSID SD4600125, South Dakota”, https://aquacensus.com/water-systems/south-dakota/faulkton-sd4600125 (data as of October 1, 2026).