NEW UNDERWOOD, SD · Pennington County
OAKS WATER USERS ASSOCIATION Water System
Consumer Confidence Report status
OAKS WATER USERS ASSOCIATION must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for OAKS WATER USERS ASSOCIATION.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.
System facts
- System ID (PWSID)
- SD4602135
- System type
- Community Water System
- Population served
- 180
- Service connections
- 73
- Ownership
- privately owned
- Water source
- groundwater (wells)
OAKS WATER USERS ASSOCIATION is one of 583 community water systems in South Dakota in the 500 or fewer people size category, serving 180 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 2015, all of which EPA lists as closed. Nothing has been added since 2015.
None of the 1 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves the Stage 1 Disinfectants and Disinfection Byproducts Rule.
Violation history
Treatment Technique No Certif. Operator
Health-basedStage 1 Disinfectants and Disinfection Byproducts Rule
February 1, 2015 – March 31, 2015
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| February 1, 2015 – March 31, 2015 | Treatment Technique No Certif. Operator | Stage 1 Disinfectants and Disinfection Byproducts Rule | Health-based | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 11, 2002State Intentional no-action3 linked violations
- December 28, 2001State Compliance achieved5 linked violations
- May 23, 2001State Public Notification received5 linked violations
- March 9, 1999State Public Notification received56 linked violations
- March 4, 1999State Public Notification requested7 linked violations
Common questions
Is OAKS WATER USERS ASSOCIATION required to publish a Consumer Confidence Report?
- Yes. OAKS WATER USERS ASSOCIATION is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is OAKS WATER USERS ASSOCIATION’s next Consumer Confidence Report due?
- OAKS WATER USERS ASSOCIATION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OAKS WATER USERS ASSOCIATION have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OAKS WATER USERS ASSOCIATION.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
OAKS WATER USERS ASSOCIATION
Phone not on record
NEW UNDERWOOD, SD 57761