JOCO NELSON COMPLEX WASTEWATER PLANT (WWTP)
NPDES ID: KS0055492
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: 4 effluent violations.
Violations
May 31, 2026
Solids, total suspended
199% over limit
Discharged 134.33333 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
77% over limit
Discharged 8.65 mg/L against a permitted limit of 4.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
46% over limit
Discharged 43.91667 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
36% over limit
Discharged 9.00833 mg/L against a permitted limit of 6.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
79% over limit
Discharged 11.46667 mg/L against a permitted limit of 6.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
68% over limit
Discharged 16.775 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
12% over limit
Discharged 27.91667 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
BOD, carbonaceous [5 day, 20 C]
30% over limit
Discharged 32.58333 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
44% over limit
Discharged 14.93333 mg/L against a permitted limit of 10.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, carbonaceous [5 day, 20 C]
19% over limit
Discharged 29.66667 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
IC25 Static Renewal 7 Day Chronic Chrpimephales
12% over limit
Discharged 84.6 % against a permitted limit of 96 % (DAILY MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
20% over limit
Discharged 13.55833 mg/L against a permitted limit of 11.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
16% over limit
Discharged 10.55833 mg/L against a permitted limit of 9.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
50% over limit
Discharged 10.04167 mg/L against a permitted limit of 6.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
100% over limit
Discharged 7.98333 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
107% over limit
Discharged 6.825 mg/L against a permitted limit of 3.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
92% over limit
Discharged 5.94167 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
86% over limit
Discharged 7.24167 mg/L against a permitted limit of 3.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
57% over limit
Discharged 7.675 mg/L against a permitted limit of 4.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
32% over limit
Discharged 8.725 mg/L against a permitted limit of 6.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
98% over limit
Discharged 12.65833 mg/L against a permitted limit of 6.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, nitrogen inhib 5-day [20 deg. C]
33% over limit
Discharged 33.1667 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
46% over limit
Discharged 14.6083 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, nitrogen inhib 5-day [20 deg. C]
26% over limit
Discharged 31.4167 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
51% over limit
Discharged 15.6667 mg/L against a permitted limit of 10.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, nitrogen inhib 5-day [20 deg. C]
2% over limit
Discharged 40.6667 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 12.7917 mg/L against a permitted limit of 11.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, nitrogen inhib 5-day [20 deg. C]
35% over limit
Discharged 33.8333 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 9.1417 mg/L against a permitted limit of 9.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, nitrogen inhib 5-day [20 deg. C]
9% over limit
Discharged 27.3333 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
BOD, nitrogen inhib 5-day [20 deg. C]
5% over limit
Discharged 26.25 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
108% over limit
Discharged 13.9667 mg/L against a permitted limit of 6.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
BOD, nitrogen inhib 5-day [20 deg. C]
27% over limit
Discharged 31.75 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, nitrogen inhib 5-day [20 deg. C]
3% over limit
Discharged 41.3333 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
209% over limit
Discharged 12.35 mg/L against a permitted limit of 4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
216% over limit
Discharged 10.425 mg/L against a permitted limit of 3.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
104% over limit
Discharged 6.3333 mg/L against a permitted limit of 3.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)