Is ISABEL required to publish a Consumer Confidence Report?

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

ISABEL’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.

ISABEL, SD · Dewey County

ISABEL Water System

Consumer Confidence Report status

ISABEL 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 ISABEL.

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): SD4600175
System type: Community Water System
Population served: 145
Service connections: 135
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

ISABEL is one of 583 community water systems in South Dakota in the 500 or fewer people size category, serving 145 people from surface water.

As of August 1, 2026, its federal record holds 11 entries between 1976 and 2005, all of which EPA lists as closed. Nothing has been added since 2005.

Of the 11, 6 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 Surface Water Treatment Rules, inorganic chemicals, and volatile organic chemicals.

Violation history

Public Notification Violation without NPDWR Violation
—
Public Notice
July 10, 2005 – July 3, 2007
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 2004 – February 29, 2004
Resolved
Monitoring, Regular
—
Nickel
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 2001 – December 31, 2001
Resolved
Monitoring, Regular
—
CHLOROBENZENE
October 1, 1999 – December 31, 1999
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
October 1, 1999 – December 31, 1999
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
October 1, 1997 – October 31, 1997
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
April 1, 1997 – April 30, 1997
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
February 1, 1994 – February 28, 1994
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
July 10, 2005 – July 3, 2007	Public Notification Violation without NPDWR Violation	Public Notice	—	Resolved
February 1, 2004 – February 29, 2004	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Nickel	—	Resolved
January 1, 2001 – December 31, 2001	Monitoring, Regular	Thallium, Total	—	Resolved
October 1, 1999 – December 31, 1999	Monitoring, Regular	CHLOROBENZENE	—	Resolved
October 1, 1999 – December 31, 1999	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
October 1, 1997 – October 31, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
April 1, 1997 – April 30, 1997	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
February 1, 1994 – February 28, 1994	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	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

January 1, 2016State Compliance achieved4 linked violations
April 5, 2011State Compliance achieved9 linked violations
April 1, 2009State Compliance achieved1 linked violation
December 11, 2008State Public Notification received1 linked violation
October 2, 2008State Public Notification requested1 linked violation
September 4, 2007State Public Notification requested2 linked violations
July 3, 2007State Compliance achieved5 linked violations
July 3, 2007State Compliance achieved7 linked violations
July 3, 2007State Public Notification received4 linked violations
June 26, 2006State Violation/Reminder Notice2 linked violations
November 19, 2004State Compliance achieved4 linked violations
April 19, 2004State Public Notification received4 linked violations
January 1, 2004State Violation/Reminder Notice4 linked violations
July 1, 2003State Intentional no-action5 linked violations
February 12, 2002State Public Notification received1 linked violation
February 12, 2002State Public Notification received2 linked violations
February 12, 2002State Public Notification received2 linked violations
January 29, 2002State Compliance achieved3 linked violations
January 29, 2002State Compliance achieved3 linked violations
January 29, 2002State Compliance achieved2 linked violations
January 10, 2002State Public Notification requested3 linked violations
January 10, 2002State Public Notification requested2 linked violations
October 31, 2001State Public Notification requested3 linked violations
February 29, 2000State Compliance achieved25 linked violations
January 26, 2000State Public Notification requested25 linked violations
February 2, 1999State Compliance achieved52 linked violations
December 9, 1996State Public Notification requested23 linked violations
May 3, 1996State Public Notification received55 linked violations
March 25, 1996State Public Notification requested7 linked violations

Common questions

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

ISABEL

6054662177

ISABEL, SD 57633