Is WOONSOCKET required to publish a Consumer Confidence Report?

Yes. WOONSOCKET 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 WOONSOCKET’s next Consumer Confidence Report due?

WOONSOCKET’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

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.

WOONSOCKET, SD · Sanborn County

WOONSOCKET Water System

Consumer Confidence Report status

WOONSOCKET 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 1 item for WOONSOCKET that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

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): SD4600376
System type: Community Water System
Population served: 618
Service connections: 330
Ownership: local government
Water source: groundwater (wells)

WOONSOCKET is one of 124 community water systems in South Dakota in the 501 to 3,300 people size category, serving 618 people from groundwater.

As of August 1, 2026, its federal record holds 11 entries between 1976 and 2024, of which 1 remains open; none are health-based.

Of the 11, 9 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Lead and Copper Rule, and the Radionuclides and Revised Rad Rule.

Violation history

Monitoring, Source Water (GWR)
—
E. COLI
August 10, 2024
Unaddressed
Public Education
Health-based
Lead and Copper Rule
October 4, 2011 – July 19, 2012
Resolved
Public Education
Health-based
Lead and Copper Rule
April 26, 2010 – June 24, 2010
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 2009 – December 31, 2009
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 2003 – December 31, 2003
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1976 – June 30, 1980
Archived
Monitoring, Regular
—
Combined Radium (-226 and -228)
July 1, 1976 – June 30, 1980
Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
August 10, 2024	Monitoring, Source Water (GWR)	E. COLI	—	Unaddressed
October 4, 2011 – July 19, 2012	Public Education	Lead and Copper Rule	Health-based	Resolved
April 26, 2010 – June 24, 2010	Public Education	Lead and Copper Rule	Health-based	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 2009 – December 31, 2009	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 2003 – December 31, 2003	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1976 – June 30, 1980	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived
July 1, 1976 – June 30, 1980	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

Unaddressed no corrective action on record yetResolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

March 2, 2004State Public Notification received62 linked violations
January 29, 2004State Compliance achieved72 linked violations

Common questions

Is WOONSOCKET required to publish a Consumer Confidence Report?: Yes. WOONSOCKET 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 WOONSOCKET’s next Consumer Confidence Report due?: WOONSOCKET’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WOONSOCKET have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show 1 item for WOONSOCKET that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.
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

WOONSOCKET

6057964275

WOONSOCKET, SD 57385