DONALDSON, TOWN OF
NPDES ID: AR0048020
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
Solids, total suspended
14% over limit
Discharged 51.5 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 14.76861988 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
40% over limit
Discharged 42 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
185% over limit
Discharged 33.36899972 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
10% over limit
Discharged 32.9 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
16% over limit
Discharged 13.63361989 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, total suspended
29% over limit
Discharged 38.75 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
66% over limit
Discharged 19.38579984 kg/d against a permitted limit of 11.7132 kg/d (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
BOD, 5-day, 20 deg. C
5% over limit
Discharged 47.2 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
49% over limit
Discharged 17.49261985 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
2% over limit
Discharged 30.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
225% over limit
Discharged 1300 MPN/100mL against a permitted limit of 400 MPN/100mL (7 DA GEO)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
8% over limit
Discharged 48.6 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 15.84459987 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
52% over limit
Discharged 17.80133985 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
140% over limit
Discharged 28.07535976 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 46.7 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 33.35 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
BOD, 5-day, 20 deg. C
11% over limit
Discharged 49.8 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
55% over limit
Discharged 18.15999985 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 33.15 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
74% over limit
Discharged 20.43453983 kg/d against a permitted limit of 11.7132 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
15% over limit
Discharged 51.8 mg/L against a permitted limit of 45 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)