COLUMBIA, SC · Richland County

COLUMBIA CITY OF (SC4010001) Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace South Carolina’s official records. Always confirm current status with South Carolina before making decisions based on this information.

System facts

System ID (PWSID): SC4010001
System type: Community Water System
Population served: 319,500
Service connections: 153,420
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Chlorite
December 1, 2024 – December 16, 2024
Resolved
Maximum Contaminant Level Violation, E. coli (RTCR)
Health-based
Revised Total Coliform Rule
April 1, 2021 – April 30, 2021
Resolved
Monitoring and Reporting (DBP)
—
Chlorite
August 1, 2017 – August 31, 2017
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
November 1, 2015 – November 30, 2015
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
October 1, 2009 – October 31, 2009
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
April 1, 2009 – April 30, 2009
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
May 1, 2007 – May 31, 2007
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2005 – August 31, 2005
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
October 1, 1999 – October 31, 1999
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1997 – November 30, 1997
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
November 1, 1997 – November 30, 1997
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1993 – September 30, 1993
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1993 – June 30, 1993
Resolved
Monitoring, Regular
—
Chromium
January 1, 1993 – January 31, 1993
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1993 – January 31, 1993
Resolved
Monitoring, Regular
—
Barium
January 1, 1993 – January 31, 1993
Resolved
Monitoring, Regular
—
Mercury
January 1, 1993 – January 31, 1993
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1993 – March 31, 1993
Resolved
Monitoring, Regular
—
Selenium
January 1, 1993 – January 31, 1993
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
July 1, 1991 – July 31, 1991
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
May 1, 1991 – May 31, 1991
Archived
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
March 1, 1991 – March 31, 1991
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
December 1, 2024 – December 16, 2024	Maximum Contaminant Level Violation, Average	Chlorite	Health-based	Resolved
April 1, 2021 – April 30, 2021	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Health-based	Resolved
August 1, 2017 – August 31, 2017	Monitoring and Reporting (DBP)	Chlorite	—	Resolved
November 1, 2015 – November 30, 2015	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 2009 – October 31, 2009	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
April 1, 2009 – April 30, 2009	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
May 1, 2007 – May 31, 2007	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
August 1, 2005 – August 31, 2005	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 1999 – October 31, 1999	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
November 1, 1997 – November 30, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1997 – November 30, 1997	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
July 1, 1993 – September 30, 1993	Monitoring, Regular	Nitrate	—	Resolved
April 1, 1993 – June 30, 1993	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Regular	Chromium	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Regular	Barium	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Regular	Mercury	—	Resolved
January 1, 1993 – March 31, 1993	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1993 – January 31, 1993	Monitoring, Regular	Selenium	—	Resolved
July 1, 1991 – July 31, 1991	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
May 1, 1991 – May 31, 1991	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived
March 1, 1991 – March 31, 1991	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Archived

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

Enforcement actions

February 27, 2025State Public Notification received1 linked violation
February 21, 2025State Public Notification requested1 linked violation
February 21, 2025State Violation/Reminder Notice1 linked violation
December 16, 2024State Compliance achieved1 linked violation
June 8, 2021State Administrative/Compliance Order with penalty issued1 linked violation
June 8, 2021State Administrative Penalty assessed1 linked violation
May 31, 2021State Compliance achieved1 linked violation
April 28, 2021State Show-Cause hearing1 linked violation
April 20, 2021State Formal Notice of Violation issued1 linked violation
April 15, 2021State Boil Water Order1 linked violation
April 15, 2021State Public Notification requested1 linked violation
April 15, 2021State Violation/Reminder Notice1 linked violation
April 14, 2021State Public Notification received1 linked violation
March 29, 2018State Compliance achieved1 linked violation
October 13, 2017State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
October 13, 2017State Public Notification requested1 linked violation
October 13, 2017State Violation/Reminder Notice1 linked violation
March 4, 2016State Public Notification received1 linked violation
February 11, 2016State Public Notification requested1 linked violation
February 11, 2016State Violation/Reminder Notice1 linked violation
January 1, 2016State Compliance achieved1 linked violation
July 9, 2013State Administrative Penalty assessedgeneral compliance action — not tied to a specific violation on record
July 9, 2013State Administrative/Compliance Order with penalty issuedgeneral compliance action — not tied to a specific violation on record
July 9, 2013State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
April 22, 2013State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
April 22, 2013State Show-Cause hearinggeneral compliance action — not tied to a specific violation on record
April 22, 2013State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 22, 2013State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 10, 2013State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
July 1, 2010State Compliance achieved2 linked violations
March 1, 2010State Administrative Penalty assessed2 linked violations
March 1, 2010State Administrative/Compliance Order with penalty issued2 linked violations
February 26, 2010State Show-Cause hearing2 linked violations
January 12, 2010State Formal Notice of Violation issued2 linked violations
December 15, 2009State Public Notification received1 linked violation
December 1, 2009State Violation/Reminder Notice1 linked violation
December 1, 2009State Public Notification requested1 linked violation
April 1, 2009State Public Notification requested1 linked violation
April 1, 2009State Violation/Reminder Notice1 linked violation
April 1, 2009State Public Notification received1 linked violation
December 1, 2007State Compliance achieved1 linked violation
June 28, 2007State Public Notification received1 linked violation
June 19, 2007State Public Notification requested1 linked violation
June 19, 2007State Violation/Reminder Notice1 linked violation
December 19, 2005State Public Notification received9 linked violations
November 17, 2005State Public Notification requested1 linked violation
November 17, 2005State Violation/Reminder Notice1 linked violation
October 1, 2005State Public Notification received1 linked violation
January 1, 1998State Compliance achieved2 linked violations
December 19, 1997State Public Notification received3 linked violations
October 10, 1993State Compliance achieved3 linked violations
July 10, 1993State Compliance achieved2 linked violations
April 10, 1993State Compliance achieved4 linked violations
June 26, 1991State Public Notification received1 linked violation

Contact

SHEALY, CLINT

803-545-3400

COLUMBIA, SC 29201