Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	SC4010001
PWS Name	COLUMBIA CITY OF (SC4010001)
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	319500
County Served	Richland

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MCL	Maximum Contaminant Level Violation, Average	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	3851853	Returned to Compliance	01-DEC-2024	31-DEC-2024	Yes
MCL	Maximum Contaminant Level Violation, E. coli (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	3851851	Returned to Compliance	01-APR-2021	30-APR-2021	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorite	3851850	Returned to Compliance	01-AUG-2017	31-AUG-2017	No
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3851848	Returned to Compliance	01-NOV-2015	30-NOV-2015	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3851821	Returned to Compliance	01-OCT-2009	31-OCT-2009	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3851820	Returned to Compliance	01-APR-2009	30-APR-2009	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3851809	Returned to Compliance	01-MAY-2007	31-MAY-2007	Yes
TT	Single Turbidity Exceed (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	3851606	Returned to Compliance	01-AUG-2005	31-AUG-2005	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	3851400	Known	01-OCT-1999	31-OCT-1999	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	3652498	Returned to Compliance	01-NOV-1997	30-NOV-1997	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	3652598	Returned to Compliance	01-NOV-1997	30-NOV-1997	Yes
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2461093	Returned to Compliance	01-JUL-1993	30-SEP-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2460993	Returned to Compliance	01-APR-1993	30-JUN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	2510793	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	2511093	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2460893	Returned to Compliance	01-JAN-1993	31-MAR-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	2510393	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	2510493	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	2510693	Returned to Compliance	01-JAN-1993	31-JAN-1993	No
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	1683091	Known	01-JUL-1991	31-JUL-1991	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	1612391	Known	01-MAY-1991	31-MAY-1991	Yes
MCL	Maximum Contaminant Level Violation, Acute (TCR)	Total Coliform Rule	Coliform (TCR)	1487291	Known	01-MAR-1991	31-MAR-1991	Yes

1 - 22 of 22

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
2460064	3851853	SIF	State Public Notification received	27-FEB-2025	State	-
2460057	3851851	SFM	State Administrative Penalty assessed	08-JUN-2021	State	Consent Order No. 21-029-DW $4,000.00 stipulated penalty
2460049	3851850	SOX	State Compliance achieved	29-MAR-2018	State	-
2460044	3851848	SIF	State Public Notification received	04-MAR-2016	State	-
2460032	3851821	SOX	State Compliance achieved	01-JUL-2010	State	-
2460032	3851820	SOX	State Compliance achieved	01-JUL-2010	State	-
2460018	3851809	SOX	State Compliance achieved	01-DEC-2007	State	-
2460006	3851606	SOX	State Compliance achieved	24-FEB-2006	State	-
1932100	3851400	SIA	State Violation/Reminder Notice	10-FEB-2000	State	-
2459498	3652498	SOX	State Compliance achieved	01-JAN-1998	State	-
2459498	3652598	SOX	State Compliance achieved	01-JAN-1998	State	-
953593	2510693	SOX	State Compliance achieved	10-JAN-1994	State	-
953593	2510793	SOX	State Compliance achieved	10-JAN-1994	State	-
953593	2511093	SOX	State Compliance achieved	10-JAN-1994	State	-
953593	2510393	SOX	State Compliance achieved	10-JAN-1994	State	-
953593	2510493	SOX	State Compliance achieved	10-JAN-1994	State	-
904193	2461093	SOX	State Compliance achieved	10-OCT-1993	State	-
904093	2460993	SOX	State Compliance achieved	10-JUL-1993	State	-
903993	2460893	SOX	State Compliance achieved	10-APR-1993	State	-
514091	1683091	SIF	State Public Notification received	26-JUL-1991	State	-
491191	1487291	SIF	State Public Notification received	26-JUN-1991	State	-

1 - 21 of 21

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
BROAD RIVER CANAL (S40101)	9195	Yes	Intake	Surface water	Permanent	Active
LAKE MURRAY (S40102)	9196	Yes	Intake	Surface water	Permanent	Active
DISTRIBUTION	10792	No	Distribution System/Zone	-	-	Active
CANAL WTP (A40010)	8020	No	Treatment Plant	-	-	Active
LAKE MURRAY WTP (A40011)	8021	No	Treatment Plant	-	-	Active

1 - 5 of 5

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
CANAL WTP (A40010)	8020	Sedimentation	Particulate removal
CANAL WTP (A40010)	8020	Rapid Mix	Particulate removal
CANAL WTP (A40010)	8020	Flocculation	Particulate removal
CANAL WTP (A40010)	8020	Coagulation	Particulate removal
CANAL WTP (A40010)	8020	Gaseous Chlorination, Pre	Disinfection
CANAL WTP (A40010)	8020	pH Adjustment, Post	Corrosion control
CANAL WTP (A40010)	8020	Inhibitor, Orthophosphate	Corrosion control
CANAL WTP (A40010)	8020	Fluoridation	Other
CANAL WTP (A40010)	8020	pH Adjustment, Pre	Particulate removal
CANAL WTP (A40010)	8020	Sludge Treatment	Particulate removal
CANAL WTP (A40010)	8020	Chloramines	Disinfection
LAKE MURRAY WTP (A40011)	8021	Fluoridation	Other
LAKE MURRAY WTP (A40011)	8021	pH Adjustment, Pre	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Sludge Treatment	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Sedimentation	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Rapid Mix	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Flocculation	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Inhibitor, Orthophosphate	Corrosion control
LAKE MURRAY WTP (A40011)	8021	Chloramines	Disinfection by-products control
LAKE MURRAY WTP (A40011)	8021	Filtration, Rapid Sand	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Coagulation	Particulate removal
LAKE MURRAY WTP (A40011)	8021	Gaseous Chlorination, Pre	Disinfection
LAKE MURRAY WTP (A40011)	8021	pH Adjustment, Post	Corrosion control
LAKE MURRAY WTP (A40011)	8021	Chlorine Dioxide	Disinfection
LAKE MURRAY WTP (A40011)	8021	Chloramines	Disinfection

1 - 25 of 25

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Nav Menu

Your Drinking Water Query results from SDWIS Fed Reporting Services

Note

PWS Violation

Violations

Column Actions

Enforcement Actions

Enforcement Actions

Column Actions

PWS Facilities

All Facilities

Column Actions

PWS Treatment Processes

Treatment Processes

Column Actions