HURON BASIN WWTP
NPDES ID: OH0020125
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
313% over limit
Discharged 119 kg/d against a permitted limit of 28.8 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
489% over limit
Discharged 33.6 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
354% over limit
Discharged 196 kg/d against a permitted limit of 43.2 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
376% over limit
Discharged 18.1 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Biosolids weight indluding admixtures
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (MO AVG)
DMR, Monitor Only - Overdue
Biosolids weight indluding admixtures
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (DAILY MX)
DMR, Monitor Only - Overdue
Sludge waste from secondary clarifiers
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (MO AVG)
DMR, Monitor Only - Overdue
Mercury, tot in bot deposits [dry wgt]
0% over limit
Discharged 0 mg/L against a permitted limit of 57 mg/L (DAILY MX)
DMR, Limited - Overdue
Potassium, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Molybdenum, sludge, total, dry weight [as Mo]
0% over limit
Discharged 0 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Arsenic, dry weight
0% over limit
Discharged 0 mg/L against a permitted limit of 75 mg/L (DAILY MX)
DMR, Limited - Overdue
Sludge weight, dry
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (DAILY MX)
DMR, Monitor Only - Overdue
Biosolids weight indluding admixtures
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (DAILY MX)
DMR, Monitor Only - Overdue
Phosphorous, total, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Cadmium, in bottom deposits [dry wgt]
0% over limit
Discharged 0 mg/L against a permitted limit of 85 mg/L (DAILY MX)
DMR, Limited - Overdue
Selenium, dry weight
0% over limit
Discharged 0 mg/L against a permitted limit of 100 mg/L (DAILY MX)
DMR, Limited - Overdue
Lead, total dry weight [as Pb]
0% over limit
Discharged 0 mg/L against a permitted limit of 840 mg/L (DAILY MX)
DMR, Limited - Overdue
Sludge waste from secondary clarifiers
0% over limit
Discharged 0 gal against a permitted limit of 0 gal (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, ammonia in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Biosolids weight indluding admixtures
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (MO AVG)
DMR, Monitor Only - Overdue
Fecal coliform
0% over limit
Discharged 0 MPN/g against a permitted limit of 2000000 MPN/g (DAILY MX)
DMR, Limited - Overdue
Phosphorous, total, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Potassium, in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia in bottom deposits
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nickel, tot in bottom deposits [dry wgt]
0% over limit
Discharged 0 mg/L against a permitted limit of 420 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Sludge weight, dry
0% over limit
Discharged 0 kg against a permitted limit of 0 kg (MO AVG)
DMR, Monitor Only - Overdue
Zinc in bottom deposits [dry wgt]
0% over limit
Discharged 0 mg/L against a permitted limit of 7500 mg/L (DAILY MX)
DMR, Limited - Overdue
Copper in bottom deposits [dry wgt]
0% over limit
Discharged 0 mg/L against a permitted limit of 4300 mg/L (DAILY MX)
DMR, Limited - Overdue
October 31, 2025
Nitrogen, ammonia total [as N]
124% over limit
Discharged 8.5 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
160% over limit
Discharged 14.8 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
56% over limit
Discharged 8.87 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
77% over limit
Discharged 6.73 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
5% over limit
Discharged 5.97 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
November 30, 2024
Phosphorus, total [as P]
33% over limit
Discharged 1.99 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
147% over limit
Discharged 14.1 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
88% over limit
Discharged 7.14 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
57% over limit
Discharged 67.9 kg/d against a permitted limit of 43.2 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
272% over limit
Discharged 21.2 mg/L against a permitted limit of 5.7 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
195% over limit
Discharged 11.2 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
10% over limit
Discharged 31.8 kg/d against a permitted limit of 28.8 kg/d (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
3% over limit
Discharged 3.9 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (4 days ago)