TORRANCE ST HOSP STP
NPDES ID: PA0030929
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: 6 effluent violations.
Violations
May 31, 2026
Solids, total suspended
2% over limit
Discharged 61 mg/L against a permitted limit of 60 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Coliform, fecal general
101% over limit
Discharged 2014 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Coliform, fecal general
9% over limit
Discharged 218 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
20% over limit
Discharged 4.8 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 51 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
414% over limit
Discharged 36 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
188% over limit
Discharged 10.09 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, carbonaceous [5 day, 20 C]
73% over limit
Discharged 69 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
234% over limit
Discharged 23.4 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
40% over limit
Discharged 35 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 65 mg/L against a permitted limit of 60 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
291% over limit
Discharged 13.68 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
38% over limit
Discharged 69.1 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
44% over limit
Discharged 65 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
325% over limit
Discharged 14.86 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.7 SU against a permitted limit of 6 SU (INST MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
78% over limit
Discharged 71 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
17% over limit
Discharged 5 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
140% over limit
Discharged 60 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 52 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
41% over limit
Discharged 70.6 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
227% over limit
Discharged 22.9 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
191% over limit
Discharged 10.201 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
209% over limit
Discharged 21.6 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
16% over limit
Discharged 29 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
38% over limit
Discharged 69.2 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
73% over limit
Discharged 69 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
329% over limit
Discharged 15 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
13% over limit
Discharged 5.2 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
56% over limit
Discharged 39 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
41% over limit
Discharged 70.7 mg/L against a permitted limit of 50 mg/L (INST MAX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 10.3 SU against a permitted limit of 9 SU (INST MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
78% over limit
Discharged 71 mg/L against a permitted limit of 40 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
246% over limit
Discharged 24.2 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
200% over limit
Discharged 6 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
158% over limit
Discharged 10.3 mg/L against a permitted limit of 4 mg/L (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Coliform, fecal general
Limit violation
Discharged 492 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 24200 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
August 31, 2025
Coliform, fecal general
Limit violation
Discharged 24200 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 492 MPN/100mL against a permitted limit of 200 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
36% over limit
Discharged 5.45 mg/L against a permitted limit of 4 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
20% over limit
Discharged 54 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 2.267 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Coliform, fecal general
99% over limit
Discharged 19860 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
14% over limit
Discharged 3.99 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Coliform, fecal general
Limit violation
Discharged 70 MPN/100mL against a permitted limit of 2000 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Coliform, fecal general
Limit violation
Discharged 24200 MPN/100mL against a permitted limit of 10000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
35% over limit
Discharged 9.48 mg/L against a permitted limit of 7 mg/L (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
77% over limit
Discharged 6.19 mg/L against a permitted limit of 3.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
10% over limit
Discharged 2.2 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
114% over limit
Discharged 4.27 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
150% over limit
Discharged 10 mg/L against a permitted limit of 4 mg/L (INST MAX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)