ADAMS SUBDIVISION WWTF
NPDES ID: MO0083984
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
Violations
March 31, 2026
Nitrogen, ammonia total [as N]
962% over limit
Discharged 30.8 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
311% over limit
Discharged 30.8 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
82% over limit
Discharged 82 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 82 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
41% over limit
Discharged 113 mg/L against a permitted limit of 80 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
12% over limit
Discharged 73 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
455% over limit
Discharged 16.1 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
115% over limit
Discharged 16.1 mg/L against a permitted limit of 7.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
62% over limit
Discharged 73 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
0% over limit
Discharged 71 mg/L against a permitted limit of 120 mg/L (WKLY AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
218% over limit
Discharged 143 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
218% over limit
Discharged 143 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Overdue
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
120% over limit
Discharged 143 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
120% over limit
Discharged 143 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
807% over limit
Discharged 12.7 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
807% over limit
Discharged 12.7 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 7.2 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.008 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.003804 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
253% over limit
Discharged 12.7 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
253% over limit
Discharged 12.7 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.003804 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 71 mg/L against a permitted limit of 80 mg/L (MO AVG)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.017 mg/L (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 2.31 mg/L against a permitted limit of 0 mg/L (DAILY MN)
DMR, Monitor Only - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 2.31 mg/L against a permitted limit of 0 mg/L (MO AV MN)
DMR, Monitor Only - Overdue
June 30, 2025
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
72% over limit
Discharged 6.2 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
343% over limit
Discharged 6.2 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
28% over limit
Discharged 83 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
84% over limit
Discharged 83 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
103% over limit
Discharged 5.88 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
87% over limit
Discharged 84 mg/L against a permitted limit of 45 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
29% over limit
Discharged 84 mg/L against a permitted limit of 65 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
December 31, 2024
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
93% over limit
Discharged 5.6 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
936% over limit
Discharged 14.5 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 1030 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
303% over limit
Discharged 14.5 mg/L against a permitted limit of 3.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
Limit violation
Discharged 2419.6 MPN/100mL against a permitted limit of 206 MPN/100mL (30DA GM)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)