Public water system · SD4600397

Active

Ipswich

At a glance

Ipswich (PWSID SD4600397) is an active community water system in Edmunds County, South Dakota. It reports serving 928 people through 458 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 2024.

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

Population served

928

Service connections

458

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDSD4600397

System typeCommunity water system

Activity statusActive

Population served928

Service connections458

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencySD state drinking water program

City servedIpswich

StateSouth Dakota

ZIP57451

CountyEdmunds County

How does Ipswich compare with other water systems in Edmunds County?

By EPA's size categories, Ipswich is a small system (501 to 3,300 people). Edmunds County has 6 active public water systems, and Ipswich is the largest of them by population served. Its population served is about twice the county average of 453 people per system, and accounts for 34% of the 2,720 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 Ipswich 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 Ipswich?

EPA lists Ipswich 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 6 active systems in Edmunds County (83%) are also owned by a local government.

Does Ipswich have drinking water violations?

EPA's records list 9 violations for this system; none is health-based, and the most recent began in October 2024. The violations listed here began between July 1976 and October 2024. By type: 8 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 as archived and 4 as resolved. 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. 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
2024-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2021-10-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2021-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
1999-12-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived
1997-06-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Archived
1997-01-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived
1996-01-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	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 9 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.

Ipswich: frequently asked questions

Who runs Ipswich?

Ipswich (PWSID SD4600397) is a community water system owned by a local government. It is regulated by the SD state drinking water program.

How many people does Ipswich serve?

Ipswich reports serving 928 people through 458 service connections in Edmunds County, South Dakota.

Where does Ipswich 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 Ipswich have any drinking water violations?

EPA's records list 9 violations for this system; none is 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 Ipswich'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 9 violations for this system; none is health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.

Where can I find Ipswich's water quality report?

As a community water system, Ipswich 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 Edmunds County

Water system	County	Population served	Type	Source
Mina Lake Sanitary District	Edmunds	863	Community	Purchased surface water
Bowdle	Edmunds	470	Community	Purchased surface water
Roscoe	Edmunds	269	Community	Purchased surface water
Hosmer	Edmunds	164	Community	Purchased surface water
Boulder Colony	Edmunds	26	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, “Ipswich, PWSID SD4600397, South Dakota”, https://aquacensus.com/water-systems/south-dakota/ipswich-sd4600397 (data as of October 1, 2026).