LEROY HIGH SCHOOL
NPDES ID: AL0042391
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 9 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
85% over limit
Discharged 6.1 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
117% over limit
Discharged 4.766667 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
274% over limit
Discharged 1.4845811 kg/d against a permitted limit of 0.39725 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
395% over limit
Discharged 31.2 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
7212% over limit
Discharged 40070 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
3354% over limit
Discharged 86600 MPN/100mL against a permitted limit of 2507 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
389% over limit
Discharged 20.555 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
329% over limit
Discharged 2.55170371 kg/d against a permitted limit of 0.59474 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
4% over limit
Discharged 47 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
346% over limit
Discharged 28.1 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
126% over limit
Discharged 66.15894 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
127% over limit
Discharged 0.90205198 kg/d against a permitted limit of 0.39725 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
294% over limit
Discharged 16.55 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
12% over limit
Discharged 613.18 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 4.9 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
667% over limit
Discharged 32.2 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
136% over limit
Discharged 1.40452751 kg/d against a permitted limit of 0.59474 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
5% over limit
Discharged 15.8 mg/L against a permitted limit of 15 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
254% over limit
Discharged 1.40452751 kg/d against a permitted limit of 0.39725 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
411% over limit
Discharged 32.2 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
235% over limit
Discharged 49.68153 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, carb-5 day, 20 deg C, percent removal
79% over limit
Discharged 73.11828 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
28% over limit
Discharged 28.8 mg/L against a permitted limit of 22.5 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
252% over limit
Discharged 47.2 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
November 30, 2025
E. coli
32% over limit
Discharged 3300 MPN/100mL against a permitted limit of 2507 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
432% over limit
Discharged 22.35 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
205% over limit
Discharged 1673.33 MPN/100mL against a permitted limit of 548 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
640% over limit
Discharged 46.6 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
242% over limit
Discharged 2.03263919 kg/d against a permitted limit of 0.59474 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
237% over limit
Discharged 1.3404623 kg/d against a permitted limit of 0.39725 kg/d (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, carb-5 day, 20 deg C, percent removal
9% over limit
Discharged 83.63636 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
700% over limit
Discharged 17.6 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
712% over limit
Discharged 2420 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
433% over limit
Discharged 17.6 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
299% over limit
Discharged 1.24749959 kg/d against a permitted limit of 0.312352 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
500% over limit
Discharged 1.24749959 kg/d against a permitted limit of 0.207932 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
1821% over limit
Discharged 2420 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
131% over limit
Discharged 0.47980754 kg/d against a permitted limit of 0.207932 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
27% over limit
Discharged 0.3969317 kg/d against a permitted limit of 0.312352 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
176% over limit
Discharged 9.1 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
264% over limit
Discharged 8 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
279% over limit
Discharged 0.78718424 kg/d against a permitted limit of 0.207932 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
160% over limit
Discharged 39 mg/L against a permitted limit of 15 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
563% over limit
Discharged 2.07189617 kg/d against a permitted limit of 0.312352 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
E. coli
401% over limit
Discharged 631 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
170% over limit
Discharged 3.82755556 kg/d against a permitted limit of 1.41647999 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, carb-5 day, 20 deg C, percent removal
103% over limit
Discharged 69.50314 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
E. coli
712% over limit
Discharged 2420 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
476% over limit
Discharged 19 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
275% over limit
Discharged 8.25 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
34% over limit
Discharged 13.35 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
35% over limit
Discharged 1.27380722 kg/d against a permitted limit of 0.94431999 kg/d (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
818% over limit
Discharged 2.86794049 kg/d against a permitted limit of 0.312352 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
349% over limit
Discharged 0.93289851 kg/d against a permitted limit of 0.207932 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
1916% over limit
Discharged 2540 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
697% over limit
Discharged 26.3 mg/L against a permitted limit of 3.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
436% over limit
Discharged 11.8 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.72 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Numeric Violation
E. coli
3148% over limit
Discharged 9680 MPN/100mL against a permitted limit of 298 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
262% over limit
Discharged 22.8 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
110% over limit
Discharged 8.833333 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
193% over limit
Discharged 1.74039279 kg/d against a permitted limit of 0.59474 kg/d (WKLY AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.87 SU against a permitted limit of 8.5 SU (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, carb-5 day, 20 deg C, percent removal
31% over limit
Discharged 80.33175 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
30% over limit
Discharged 8.2 mg/L against a permitted limit of 6.3 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 4.893333 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, carb-5 day, 20 deg C, percent removal
250% over limit
Discharged 47.51286 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
October 31, 2024
BOD, carb-5 day, 20 deg C, percent removal
119% over limit
Discharged 67.08754 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, carb-5 day, 20 deg C, percent removal
13% over limit
Discharged 83 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
August 31, 2024
BOD, carb-5 day, 20 deg C, percent removal
11% over limit
Discharged 83.34828 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)