OOLITIC WWTP
NPDES ID: IN0023981
X — SNC: Effluent violation (non-monthly average limit)
The facility discharged more of a pollutant than its permit allows, measured over a period other than a monthly average.
Violations
February 28, 2026
Nitrogen, ammonia total [as N]
15% over limit
Discharged 2.06 mg/L against a permitted limit of 1.79 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
121% over limit
Discharged 5.95 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
36% over limit
Discharged 3.67 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
206% over limit
Discharged 3.8 mg/L against a permitted limit of 1.24 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
358% over limit
Discharged 8.2 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
134% over limit
Discharged 2.9 mg/L against a permitted limit of 1.24 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
204% over limit
Discharged 5.44 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
45% over limit
Discharged 2.6 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
77% over limit
Discharged 2.2 mg/L against a permitted limit of 1.24 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
44% over limit
Discharged 2.57 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
165% over limit
Discharged 4.75 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.2433 mg/L against a permitted limit of 1.24 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
39% over limit
Discharged 3.74 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
22% over limit
Discharged 2.19 mg/L against a permitted limit of 1.79 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
32% over limit
Discharged 3.55 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
48% over limit
Discharged 2.65 mg/L against a permitted limit of 1.79 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
145% over limit
Discharged 6.59 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
107% over limit
Discharged 3.71 mg/L against a permitted limit of 1.79 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
15% over limit
Discharged 3.1 mg/L against a permitted limit of 2.69 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
9% over limit
Discharged 1.96 mg/L against a permitted limit of 1.79 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)