NEIGHBORS OF WALNUT GROVE, LLC (WWTP)
NPDES ID: KS0092053
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: 3 effluent violations, 2 reporting violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
17% over limit
Discharged 5.02 mg/L against a permitted limit of 4.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
131% over limit
Discharged 13.6 mg/L against a permitted limit of 5.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
49% over limit
Discharged 13.6 mg/L against a permitted limit of 9.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
24% over limit
Discharged 16.2 mg/L against a permitted limit of 13.1 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
88% over limit
Discharged 16.2 mg/L against a permitted limit of 8.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
E. coli
316% over limit
Discharged 9800 MPN/100mL against a permitted limit of 2358 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
14% over limit
Discharged 11.4 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Overdue
October 31, 2025
Phosphorus, total [as P]
0% over limit
Discharged 4.3 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 1.1 mg/L against a permitted limit of 0.5 mg/L (MN WK AV)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.2 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Nitrogen, Kjeldahl, total [as N]
0% over limit
Discharged 4.3 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 0.28036316 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, Total As P
0% over limit
Discharged 0.26261176 kg/d against a permitted limit of 0 kg/d (DPD AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.29 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 1.47354325 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 112 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Overdue
Nitrogen, total [as N]
0% over limit
Discharged 22.6 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 1.2 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
pH
0% over limit
Discharged 7.29 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Overdue
Phosphorus, Total As P
0% over limit
Discharged 3.78333 mg/L against a permitted limit of 0 mg/L (DAILY AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
E. coli
0% over limit
Discharged 10 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Overdue
Nitrogen, Total As N
0% over limit
Discharged 17.73333 mg/L against a permitted limit of 0 mg/L (DAILY AV)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.01749 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 25 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrite + Nitrate total [as N]
0% over limit
Discharged 18.3 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Phosphorus, total [as P]
0% over limit
Discharged 7.2 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Nitrogen, Total As N
0% over limit
Discharged 1.23091657 kg/d against a permitted limit of 0 kg/d (DPD AVG)
DMR, Monitor Only - Overdue
May 31, 2025
Solids, total suspended
19% over limit
Discharged 35.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
28% over limit
Discharged 336 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
103% over limit
Discharged 60.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
35% over limit
Discharged 60.8 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2025
E. coli
29% over limit
Discharged 3040 MPN/100mL against a permitted limit of 2358 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
December 31, 2024
Phosphorus, total [as P]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)