Public water system · SD4600179
ActiveWestport Sanitary District
At a glance
Westport Sanitary District (PWSID SD4600179) is an active community water system in Brown County, South Dakota. It reports serving 88 people through 40 service connections. Its primary water source is purchased surface water, 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 2023.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
88
Service connections
40
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Westport Sanitary District compare with other water systems in Brown County?
By EPA's size categories, Westport Sanitary District is a very small system (500 people or fewer). Brown County has 21 active public water systems. Its population served is well below the county average of 1,813 people per system, and accounts for 0.2% of the 38,073 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 Westport Sanitary District 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 Westport Sanitary District?
EPA lists Westport Sanitary District 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. 8 of the 21 active systems in Brown County (38%) are also owned by a local government.
Does Westport Sanitary District 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 2023. The violations listed here began between August 1991 and October 2023. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other, 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) (4 of them). EPA lists 7 as resolved and 5 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 |
|---|---|---|---|---|
| 2023-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2020-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-05-27 | Required treatment not metFailure To Address Deficiency · code 45 | Long Term 2 Enhanced Surface Water Treatment Rulecode 0800 | Yes | Resolved |
| 2011-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 1996-04-16 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1996-02-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-08-12 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1993-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-10 | Public notice, recordkeeping or otherNotification, Public · code 06 | Not reported | No | Archived |
| 1991-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Westport Sanitary District: frequently asked questions
Who runs Westport Sanitary District?
Westport Sanitary District (PWSID SD4600179) is a community water system owned by a local government. It is regulated by the SD state drinking water program.
How many people does Westport Sanitary District serve?
Westport Sanitary District reports serving 88 people through 40 service connections in Brown County, South Dakota.
Where does Westport Sanitary District 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 Westport Sanitary District 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 2023. 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 Westport Sanitary District'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 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find Westport Sanitary District's water quality report?
As a community water system, Westport Sanitary District 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 Brown County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aberdeen | Brown | 27,989 | Community | Surface water |
| Brown-Day-Marshall Rws | Brown + 2 more | 5,673 | Community | Groundwater |
| Groton | Brown | 1,380 | Community | Purchased surface water |
| Warner | Brown | 485 | Community | Purchased surface water |
| Lakeside Estates | Brown | 460 | Community | Purchased surface water |
| Country Village Park | Brown | 340 | 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, “Westport Sanitary District, PWSID SD4600179, South Dakota”, https://aquacensus.com/water-systems/south-dakota/westport-sanitary-district-sd4600179 (data as of October 1, 2026).