BLUE GRANITE WATER COMPANY TROLLINGWOOD WWTP
NPDES ID: SC0026611
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: 2 effluent violations.
Violations
May 31, 2026
BOD, 5-day, 20 deg. C
21% over limit
Discharged 72.5 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
22% over limit
Discharged 36.58 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
7% over limit
Discharged 17 mg/L against a permitted limit of 15.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
42% over limit
Discharged 11.2 mg/L against a permitted limit of 7.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
17% over limit
Discharged 35.1 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
139% over limit
Discharged 29.4 mg/L against a permitted limit of 12.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
593% over limit
Discharged 2419 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 37.73 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
20% over limit
Discharged 29.4 mg/L against a permitted limit of 24.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
E. coli
245% over limit
Discharged 1203 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
89% over limit
Discharged 23.3 mg/L against a permitted limit of 12.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MN)
DMR, Monitor Only - Overdue
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
272% over limit
Discharged 92.9 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
132% over limit
Discharged 92.9 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
LC50 Static 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MN)
DMR, Monitor Only - Overdue
August 31, 2025
BOD, 5-day, 20 deg. C
5% over limit
Discharged 31.56 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
30% over limit
Discharged 78 mg/L against a permitted limit of 60 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
E. coli
138% over limit
Discharged 830 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
June 30, 2025
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
150% over limit
Discharged 100 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
300% over limit
Discharged 100 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
E. coli
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 349 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 119 MPN/100mL against a permitted limit of 126 MPN/100mL (30DAVGEO)
DMR, Limited - Numeric Violation
December 31, 2024
LC50 Static 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MN)
DMR, Monitor Only - Overdue
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 25 % (MO AVG)
DMR, Limited - Overdue
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 40 % (DAILY MX)
DMR, Limited - Overdue
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MN)
DMR, Monitor Only - Overdue
August 31, 2024
Coliform, fecal general
Limit violation
Discharged 2420 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 46 MPN/100mL against a permitted limit of 200 MPN/100mL (30DAVGEO)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)