SCWSA WWTP
NPDES ID: SC0049360
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 5 effluent violations.
Violations
May 31, 2026
BOD, carbonaceous [5 day, 20 C]
1% over limit
Discharged 8.1 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
34% over limit
Discharged 73.18479939 kg/d against a permitted limit of 54.47999954 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, carbonaceous [5 day, 20 C]
32% over limit
Discharged 7.05 mg/L against a permitted limit of 5.35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
25% over limit
Discharged 10 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
9% over limit
Discharged 33.14199972 kg/d against a permitted limit of 30.41799974 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
118% over limit
Discharged 87 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
80% over limit
Discharged 45 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 5.99 mg/L against a permitted limit of 5.35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
26% over limit
Discharged 10.05 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
63% over limit
Discharged 13 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
40% over limit
Discharged 42.72593964 kg/d against a permitted limit of 30.41799974 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
40% over limit
Discharged 7.48 mg/L against a permitted limit of 5.35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
BOD, carbonaceous [5 day, 20 C]
29% over limit
Discharged 6.9 mg/L against a permitted limit of 5.35 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
63% over limit
Discharged 13 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
50% over limit
Discharged 12 mg/L against a permitted limit of 8 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
19% over limit
Discharged 6.4 mg/L against a permitted limit of 5.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, total [as N]
111% over limit
Discharged 8.43 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)