MARION WWTP
NPDES ID: AL0023809
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: 27 effluent violations.
Violations
June 30, 2026
BOD, carbonaceous [5 day, 20 C]
69% over limit
Discharged 10.13 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
506% over limit
Discharged 763.58 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
712% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
26% over limit
Discharged 5.03 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
545% over limit
Discharged 18.44147985 kg/d against a permitted limit of 2.86019998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
539% over limit
Discharged 12.1853599 kg/d against a permitted limit of 1.90679998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
644% over limit
Discharged 11.16 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
884% over limit
Discharged 9.84 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
BOD, carbonaceous [5 day, 20 C]
50% over limit
Discharged 17.07947986 kg/d against a permitted limit of 11.3499999 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
572% over limit
Discharged 19.20873984 kg/d against a permitted limit of 2.86019998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
77% over limit
Discharged 10.63 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
41% over limit
Discharged 10.60997991 kg/d against a permitted limit of 7.53639994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
390% over limit
Discharged 617.56 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
133% over limit
Discharged 65 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
814% over limit
Discharged 9.14 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
712% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
684% over limit
Discharged 11.76 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
533% over limit
Discharged 12.0763999 kg/d against a permitted limit of 1.90679998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
94% over limit
Discharged 7.74 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
738% over limit
Discharged 15.97171987 kg/d against a permitted limit of 1.90679998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1418% over limit
Discharged 15.18 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
43% over limit
Discharged 16.18963986 kg/d against a permitted limit of 11.3499999 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
627% over limit
Discharged 20.80681983 kg/d against a permitted limit of 2.86019998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
171% over limit
Discharged 10.84 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
143% over limit
Discharged 14.6 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
51% over limit
Discharged 11.3863199 kg/d against a permitted limit of 7.53639994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1151% over limit
Discharged 18.76 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
272% over limit
Discharged 11.16 mg/L against a permitted limit of 3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
143% over limit
Discharged 9.16625992 kg/d against a permitted limit of 3.76819997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
1116% over limit
Discharged 6662.5 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
588% over limit
Discharged 17260 MPN/100mL against a permitted limit of 2507 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
235% over limit
Discharged 6.69 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
138% over limit
Discharged 13.52919989 kg/d against a permitted limit of 5.67499995 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, suspended percent removal
80% over limit
Discharged 73 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, carb-5 day, 20 deg C, percent removal
80% over limit
Discharged 73 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, carbonaceous [5 day, 20 C]
65% over limit
Discharged 9.87 mg/L against a permitted limit of 6 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
7% over limit
Discharged 84 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
2% over limit
Discharged 556.44 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
27% over limit
Discharged 81 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
6% over limit
Discharged 1.59 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
188% over limit
Discharged 8.63 mg/L against a permitted limit of 3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
301% over limit
Discharged 8.01 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
33% over limit
Discharged 7.53639994 kg/d against a permitted limit of 5.67499995 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
92% over limit
Discharged 7.21859994 kg/d against a permitted limit of 3.76819997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
220% over limit
Discharged 6.4 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
24% over limit
Discharged 4.67619996 kg/d against a permitted limit of 3.76819997 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
250% over limit
Discharged 10.5 mg/L against a permitted limit of 3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
47% over limit
Discharged 8.35359993 kg/d against a permitted limit of 5.67499995 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 0 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 0 MPN/100mL against a permitted limit of 2507 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
E. coli
145% over limit
Discharged 309 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
823% over limit
Discharged 2750 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
105% over limit
Discharged 3.89985997 kg/d against a permitted limit of 1.90679998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
594% over limit
Discharged 6.94 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
60% over limit
Discharged 4.58539996 kg/d against a permitted limit of 2.86019998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
500% over limit
Discharged 9 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
59% over limit
Discharged 4.53999996 kg/d against a permitted limit of 2.86019998 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
5% over limit
Discharged 0.02 mg/L against a permitted limit of 0.019 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
558% over limit
Discharged 6.58 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 2.21551998 kg/d against a permitted limit of 1.90679998 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
687% over limit
Discharged 11.8 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
1% over limit
Discharged 4.03 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, suspended percent removal
175% over limit
Discharged 58.8 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
5% over limit
Discharged 0.02 mg/L against a permitted limit of 0.019 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
117% over limit
Discharged 2.17 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
80% over limit
Discharged 2.7 mg/L against a permitted limit of 1.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (10 hours ago)