Is WALNUT PARK required to publish a Consumer Confidence Report?

Yes. WALNUT PARK 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 WALNUT PARK’s next Consumer Confidence Report due?

WALNUT PARK’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.

SPEARFISH, SD · Lawrence County

WALNUT PARK Water System

Consumer Confidence Report status

WALNUT PARK 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 WALNUT PARK.

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): SD4600316
System type: Community Water System
Population served: 180
Service connections: 72
Ownership: privately owned
Water source: groundwater (wells)

WALNUT PARK 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 9 entries between 1976 and 2024, all of which EPA lists as closed.

Of the 9, 4 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 the Public Notice Rule and Revised PN Rule, the Stage 1 Disinfectants and Disinfection Byproducts Rule, and the Radionuclides and Revised Rad Rule.

Violation history

LSL Reporting
—
LEAD AND COPPER RULE REVISIONS
October 17, 2024 – February 11, 2025
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
February 1, 2019 – June 21, 2019
Resolved
Treatment Technique No Certif. Operator
Health-based
Stage 1 Disinfectants and Disinfection Byproducts Rule
May 1, 2017 – June 9, 2017
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 15, 2007 – June 5, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
July 12, 2007 – June 5, 2008
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
November 3, 2006 – June 5, 2008
Resolved
Monitoring, Regular
—
Diquat
January 1, 1993 – December 31, 1995
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

Resolved 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
October 17, 2024 – February 11, 2025	LSL Reporting	LEAD AND COPPER RULE REVISIONS	—	Resolved
February 1, 2019 – June 21, 2019	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
May 1, 2017 – June 9, 2017	Treatment Technique No Certif. Operator	Stage 1 Disinfectants and Disinfection Byproducts Rule	Health-based	Resolved
July 15, 2007 – June 5, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 12, 2007 – June 5, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
November 3, 2006 – June 5, 2008	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Diquat	—	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

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 20, 2024State Intentional no-action5 linked violations
June 26, 2019State Public Notification received1 linked violation
January 15, 2019State Intentional no-action7 linked violations
June 5, 2018State Public Notification requested5 linked violations
May 15, 2018State Violation/Reminder Notice17 linked violations
June 9, 2017State Compliance achieved5 linked violations
June 5, 2017State Violation/Reminder Notice6 linked violations
August 31, 2016State Intentional no-action6 linked violations
January 10, 2014State Compliance achieved9 linked violations
June 7, 2010State Compliance achieved8 linked violations
June 5, 2008State Compliance achieved1 linked violation
June 5, 2008State Public Notification received3 linked violations
June 5, 2008State Public Notification received7 linked violations
June 5, 2008State Compliance achieved2 linked violations
June 5, 2008State Compliance achieved1 linked violation
June 5, 2008State Compliance achieved1 linked violation
June 5, 2008State Compliance achieved2 linked violations
June 5, 2008State Compliance achieved1 linked violation
June 5, 2008State Compliance achieved2 linked violations
June 5, 2008State Compliance achieved1 linked violation
July 16, 2007State Public Notification issued7 linked violations
July 14, 2007State Public Notification issued13 linked violations
March 31, 2007State Compliance achieved3 linked violations
March 31, 2007State Compliance achieved7 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued3 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued9 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued9 linked violations
March 28, 2007State Administrative/Compliance Order without penalty issued3 linked violations
January 22, 2007State Compliance achieved10 linked violations
January 22, 2007State Compliance achieved3 linked violations
January 8, 2007State Public Notification requested5 linked violations
July 20, 2006State Compliance achieved13 linked violations
June 13, 2006State Public Notification requested8 linked violations
July 18, 2000State Violation/Reminder Notice4 linked violations
April 24, 1996State Public Notification requested242 linked violations

Common questions

Is WALNUT PARK required to publish a Consumer Confidence Report?: Yes. WALNUT PARK 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 WALNUT PARK’s next Consumer Confidence Report due?: WALNUT PARK’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does WALNUT PARK have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for WALNUT PARK.
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

WALNUT PARK

Phone not on record

SPEARFISH, SD 57783