Public water system · 084690021

Active

Wanblee East

At a glance

Wanblee East (PWSID 084690021) is an active community water system in South Dakota. It reports serving 2,179 people through 374 service connections. Its primary water source is purchased surface water, and EPA lists it as Native American-owned. EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in April 2025.

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

Population served

2,179

Service connections

374

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSID084690021

System typeCommunity water system

Activity statusActive

Population served2,179

Service connections374

Primary water sourcePurchased surface water

Owner typeNative American

Primacy agencyEPA Region 08

City served—

StateSouth Dakota

ZIP—

County—

How does Wanblee East compare with other water systems in South Dakota?

By EPA's size categories, Wanblee East is a small system (501 to 3,300 people). 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 Wanblee East 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 Wanblee East?

EPA lists Wanblee East as Native American-owned. The EPA Region 08 is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act.

Does Wanblee East have drinking water violations?

EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in April 2025. The violations listed here began between August 1998 and April 2025. By type: 5 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Arsenic (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
2025-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
2024-01-01	Monitoring and reportingMonitoring, Regular · code 03	Arseniccode 1005	No	Resolved
2023-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
2017-12-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2017-12-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2008-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Arseniccode 1005	Yes	Resolved
1998-09-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Archived
1998-08-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	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.

Wanblee East: frequently asked questions

Who runs Wanblee East?

Wanblee East (PWSID 084690021) is a community water system Native American-owned. It is regulated by the EPA Region 08.

How many people does Wanblee East serve?

Wanblee East reports serving 2,179 people through 374 service connections in South Dakota.

Where does Wanblee East 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 Wanblee East have any drinking water violations?

EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in April 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 Wanblee East'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; 3 are health-based, and the most recent began in April 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the EPA Region 08.

Where can I find Wanblee East's water quality report?

As a community water system, Wanblee East 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 South Dakota

Water system	County	Population served	Type	Source
Sioux Falls	Minnehaha	216,462	Community	Surface water
Rapid City	Pennington	72,009	Community	Surface water
Aberdeen	Brown	27,989	Community	Surface water
Brookings Municipal Utilities	Brookings	23,377	Community	Groundwater
Watertown Municipal Utilities	Codington	23,230	Community	Groundwater
Web Water Development Association	Walworth + 9 more	20,750	Community	Surface water

Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.

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, “Wanblee East, PWSID 084690021, South Dakota”, https://aquacensus.com/water-systems/south-dakota/wanblee-east-084690021 (data as of October 1, 2026).