BELLEFONTAINE WWTP
NPDES ID: OH0024066
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
Violations
January 31, 2026
Toxicity [chronic], Ceriodaphnia dubia
514% over limit
Discharged 6.2 toxic against a permitted limit of 1.01 toxic (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Toxicity [chronic], Ceriodaphnia dubia
88% over limit
Discharged 1.9 toxic against a permitted limit of 1.01 toxic (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (MO AVG)
DMR, Monitor Only - Overdue
Toxicity [chronic], Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 1.01 toxic (MO AVG)
DMR, Limited - Overdue
Toxicity [acute], Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (MO AVG)
DMR, Monitor Only - Overdue
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MX)
DMR, Monitor Only - Overdue
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (MO AVG)
DMR, Monitor Only - Overdue
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 % against a permitted limit of 0 % (DAILY MX)
DMR, Monitor Only - Overdue
Toxicity [acute], Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (DAILY MX)
DMR, Monitor Only - Overdue
April 30, 2025
Toxicity [chronic], Ceriodaphnia dubia
3% over limit
Discharged 1.04 toxic against a permitted limit of 1.01 toxic (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)