CLIFTON C. WILLIAMS WWTP
NPDES ID: AL0023086
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
Nitrogen, ammonia total [as N]
11% over limit
Discharged 22.24 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
45% over limit
Discharged 50.82 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
19% over limit
Discharged 5653.6619525 kg/d against a permitted limit of 4770.63195992 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
27% over limit
Discharged 201 MPN/100mL against a permitted limit of 158 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
57% over limit
Discharged 31.34 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
14% over limit
Discharged 34.3 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
43% over limit
Discharged 28.51 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
44% over limit
Discharged 28.81 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1% over limit
Discharged 30.26 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
7% over limit
Discharged 32.11 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
52% over limit
Discharged 30.31 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
4% over limit
Discharged 2208.70998144 kg/d against a permitted limit of 2120.17998219 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
42% over limit
Discharged 28.34 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
9% over limit
Discharged 299 MPN/100mL against a permitted limit of 275 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
11% over limit
Discharged 33.31 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 47 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
6% over limit
Discharged 3374.58197165 kg/d against a permitted limit of 3180.26997328 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
50% over limit
Discharged 30.02 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
15% over limit
Discharged 34.47 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
40% over limit
Discharged 27.97 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
146% over limit
Discharged 86 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Enterococci: group D, MF trans, M-E, EIA
13% over limit
Discharged 179 MPN/100mL against a permitted limit of 158 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 23.43 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
180% over limit
Discharged 98 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Enterococci: group D, MF trans, M-E, EIA
97% over limit
Discharged 69 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3% over limit
Discharged 20.66 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Solids, total suspended
62% over limit
Discharged 73 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
71% over limit
Discharged 60 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 7222.68593931 kg/d against a permitted limit of 4770.63195992 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
37% over limit
Discharged 41 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
99% over limit
Discharged 9517.20192003 kg/d against a permitted limit of 4770.63195992 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
31% over limit
Discharged 207 MPN/100mL against a permitted limit of 158 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
84% over limit
Discharged 83 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
103% over limit
Discharged 71 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
37% over limit
Discharged 4343.4179635 kg/d against a permitted limit of 3180.26997328 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
90% over limit
Discharged 9044.587924 kg/d against a permitted limit of 4770.63195992 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
6% over limit
Discharged 37 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 68 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
18% over limit
Discharged 5606.44595289 kg/d against a permitted limit of 4770.63195992 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Enterococci: group D, MF trans, M-E, EIA
34% over limit
Discharged 211 MPN/100mL against a permitted limit of 158 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Enterococci: group D, MF trans, M-E, EIA
17% over limit
Discharged 41 MPN/100mL against a permitted limit of 35 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)