Clean Water Act discharge permit · NPDES SCG646026

COLUMBIA CANAL WTP, Columbia, SC: NPDES SCG646026 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
3Pollutants with an effluent exceedance

COLUMBIA CANAL WTP, held by COLUMBIA CITY OF, holds NPDES permit SCG646026. EPA’s file records it issued December 2, 2015 and expiring December 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	COLUMBIA CANAL WTP
Permittee as filed	COLUMBIA CITY OF
NPDES ID	SCG646026
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 2, 2015
Expiration date	December 30, 2020
Issuing agency	State
Address	Columbia, SC 29201
Receiving water impaired	303(D) Listed
Subwatershed	Upper Congaree River (HUC 030501100301)
SIC	4941 – Water Supply
Other EPA IDs (FRS)	RCRA handler SCR000761239

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

7Pollutants on file
6Under a numeric limit
7With a violation of any kind
3With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Chlorine, total residual	2	54	4	December 31, 2016	110% over the limit
Pass/Fail Static 48Hr Acute Ceriodaphnia dubia	1	8	2	December 31, 2016
pH	2	73	1	October 31, 2015
Solids, total suspended	2	72	0
Phosphorus, total [as P]	2	54	0
Flow, in conduit or thru treatment plant	2	48	0
Aluminum, total [as Al]	0	48	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES SCG646026.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID SCG646026 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act discharge permit NPDES SCG646026 for COLUMBIA CANAL WTP in Columbia, SC, held by COLUMBIA CITY OF, with its status shown as administratively continued and its discharger class as Minor. The page lists 6 for the Minor Discharger class, 3 pollutants under a numeric limit, and 3 pollutants with an effluent exceedance, with the permit issued December 2, 2015 and expiring December 30, 2020.