Public water system · SD4600412
ActiveTimberland Park
At a glance
Timberland Park (PWSID SD4600412) is an active community water system in Yankton County, South Dakota. It reports serving 95 people through 45 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in February 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
95
Service connections
45
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Timberland Park compare with other water systems in Yankton County?
By EPA's size categories, Timberland Park is a very small system (500 people or fewer). Yankton County has 9 active public water systems. Its population served is well below the county average of 1,883 people per system, and accounts for 0.6% of the 16,948 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 Timberland Park 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 Timberland Park?
EPA lists Timberland Park as privately owned. 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 9 active systems in Yankton County (33%) are also privately owned.
Does Timberland Park have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in February 2025. The violations listed here began between October 2012 and February 2025. By type: 8 monitoring and reporting and 4 required treatment not met. The contaminant or rule involved most often is Chlorine (8 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 |
|---|---|---|---|---|
| 2025-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2022-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2019-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-02-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2012-10-01 | 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.
Timberland Park: frequently asked questions
Who runs Timberland Park?
Timberland Park (PWSID SD4600412) is a community water system privately owned. It is regulated by the SD state drinking water program.
How many people does Timberland Park serve?
Timberland Park reports serving 95 people through 45 service connections in Yankton County, South Dakota.
Where does Timberland Park 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 Timberland Park 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 February 2025. 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 Timberland Park'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 February 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the SD state drinking water program.
Where can I find Timberland Park's water quality report?
As a community water system, Timberland Park 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 Yankton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Yankton | Yankton | 15,411 | Community | Groundwater |
| Gayville | Yankton | 392 | Community | Purchased groundwater |
| 3 Sons Rv Park | Yankton | 339 | Transient non-community | Groundwater |
| Mission Hill | Yankton | 190 | Community | Purchased surface water |
| East Winds Court, Inc.. | Yankton | 180 | Community | Purchased surface water |
| Volin | Yankton | 161 | 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, “Timberland Park, PWSID SD4600412, South Dakota”, https://aquacensus.com/water-systems/south-dakota/timberland-park-sd4600412 (data as of October 1, 2026).