WESTERVILLE ESTATES MHP
NPDES ID: OH0055239
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: 12 effluent violations.
Violations
June 30, 2026
E. coli, MTEC-MF
1567% over limit
Discharged 2100 MPN/100mL against a permitted limit of 126 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
E. coli, MTEC-MF
639% over limit
Discharged 2100 MPN/100mL against a permitted limit of 284 MPN/100mL (WK GEOMN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
363% over limit
Discharged 1.85 kg/d against a permitted limit of 0.4 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
487% over limit
Discharged 3.52 kg/d against a permitted limit of 0.6 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
335% over limit
Discharged 10 mg/L against a permitted limit of 2.3 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
305% over limit
Discharged 6.08 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2026
Nitrogen, ammonia total [as N]
208% over limit
Discharged 4.62 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
104% over limit
Discharged 0.815 kg/d against a permitted limit of 0.4 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
117% over limit
Discharged 1.3 kg/d against a permitted limit of 0.6 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
248% over limit
Discharged 8 mg/L against a permitted limit of 2.3 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
14% over limit
Discharged 7.74 mg/L against a permitted limit of 6.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
12% over limit
Discharged 11.46 mg/L against a permitted limit of 10.2 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
108% over limit
Discharged 25 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
161% over limit
Discharged 47 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
306% over limit
Discharged 13 kg/d against a permitted limit of 3.2 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
227% over limit
Discharged 8.84 kg/d against a permitted limit of 2.7 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
65% over limit
Discharged 16.5 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 11.92 mg/L against a permitted limit of 10.2 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
25% over limit
Discharged 3.383 kg/d against a permitted limit of 2.71 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
188% over limit
Discharged 43.2 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
543% over limit
Discharged 25.7 kg/d against a permitted limit of 4 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
43% over limit
Discharged 9.715 mg/L against a permitted limit of 6.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
483% over limit
Discharged 28 kg/d against a permitted limit of 4.8 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
58% over limit
Discharged 2.842 kg/d against a permitted limit of 1.8 kg/d (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, carbonaceous [5 day, 20 C]
8% over limit
Discharged 4.3 kg/d against a permitted limit of 4 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
January 31, 2026
pH
0% over limit
Discharged 9.2 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
4% over limit
Discharged 5 kg/d against a permitted limit of 4.8 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 4.48 kg/d against a permitted limit of 4 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
36% over limit
Discharged 20.4 mg/L against a permitted limit of 15 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
67% over limit
Discharged 2 mg/L against a permitted limit of 6 mg/L (DAILY MN)
DMR, Limited - Numeric Violation
Solids, total suspended
28% over limit
Discharged 23 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
40% over limit
Discharged 6.7 kg/d against a permitted limit of 4.8 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total suspended
61% over limit
Discharged 29 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 3.3 kg/d against a permitted limit of 3.2 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
10% over limit
Discharged 5.3 kg/d against a permitted limit of 4.8 kg/d (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
160% over limit
Discharged 26.56 mg/L against a permitted limit of 10.2 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
56% over limit
Discharged 28 mg/L against a permitted limit of 18 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 16 mg/L against a permitted limit of 12 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
118% over limit
Discharged 14.83 mg/L against a permitted limit of 6.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
105% over limit
Discharged 4.705 mg/L against a permitted limit of 2.3 mg/L (WKLY MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
57% over limit
Discharged 2.353 mg/L against a permitted limit of 1.5 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 16, 2026 (18 minutes ago)