OHIO CITY WWTP
NPDES ID: OH0023396
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
March 31, 2026
Mercury, total low level
92% over limit
Discharged 0.0000025 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
39% over limit
Discharged 2090 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Residue, tot fltrble [dried at 105 C]
77% over limit
Discharged 2650 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
18% over limit
Discharged 2650 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
January 31, 2026
Residue, tot fltrble [dried at 105 C]
69% over limit
Discharged 2540 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
13% over limit
Discharged 2540 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
71% over limit
Discharged 7.7 mg/L against a permitted limit of 4.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
December 31, 2025
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Mercury, total low level
138% over limit
Discharged 0.0000031 mg/L against a permitted limit of 0.0000013 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
64% over limit
Discharged 2460 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
9% over limit
Discharged 2460 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
November 30, 2025
Residue, tot fltrble [dried at 105 C]
45% over limit
Discharged 2180 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Residue, tot fltrble [dried at 105 C]
18% over limit
Discharged 2660 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
77% over limit
Discharged 2660 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Residue, tot fltrble [dried at 105 C]
33% over limit
Discharged 3000 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
100% over limit
Discharged 3000 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Residue, tot fltrble [dried at 105 C]
3% over limit
Discharged 2320 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
55% over limit
Discharged 2320 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Phosphorus, total [as P]
14% over limit
Discharged 1.71 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
18% over limit
Discharged 2660 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
77% over limit
Discharged 2660 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
70% over limit
Discharged 1.7 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Residue, tot fltrble [dried at 105 C]
4% over limit
Discharged 2350 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
57% over limit
Discharged 2350 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
19% over limit
Discharged 1.79 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
58% over limit
Discharged 1.58 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Residue, tot fltrble [dried at 105 C]
11% over limit
Discharged 1580 kg/d against a permitted limit of 1420 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
7% over limit
Discharged 1610 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Residue, tot fltrble [dried at 105 C]
7% over limit
Discharged 1610 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
44% over limit
Discharged 2040 kg/d against a permitted limit of 1420 kg/d (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Residue, tot fltrble [dried at 105 C]
12% over limit
Discharged 1680 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Residue, tot fltrble [dried at 105 C]
7% over limit
Discharged 1600 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Residue, tot fltrble [dried at 105 C]
45% over limit
Discharged 2180 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Residue, tot fltrble [dried at 105 C]
61% over limit
Discharged 2420 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
7% over limit
Discharged 1.6 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
49% over limit
Discharged 1.49 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
8% over limit
Discharged 2420 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
October 31, 2024
Residue, tot fltrble [dried at 105 C]
25% over limit
Discharged 2810 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
26% over limit
Discharged 1.26 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
87% over limit
Discharged 2810 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Residue, tot fltrble [dried at 105 C]
40% over limit
Discharged 3140 mg/L against a permitted limit of 2250 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Phosphorus, total [as P]
16% over limit
Discharged 1.16 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Residue, tot fltrble [dried at 105 C]
109% over limit
Discharged 3140 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 1.6 kg/d against a permitted limit of 1.42 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
127% over limit
Discharged 3.4 mg/L against a permitted limit of 1.5 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
August 31, 2024
Residue, tot fltrble [dried at 105 C]
17% over limit
Discharged 1760 mg/L against a permitted limit of 1500 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Phosphorus, total [as P]
2% over limit
Discharged 1.02 mg/L against a permitted limit of 1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)