PRAIRIE PK 12 SCHOOL DISTRICT WWTF
NPDES ID: COX634025
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.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Nitrogen, inorganic total
366% over limit
Discharged 46.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9.3 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Coliform, total general
900% over limit
Discharged 22 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, inorganic total
420% over limit
Discharged 52 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Coliform, total general
809% over limit
Discharged 20 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
514% over limit
Discharged 61.4 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, inorganic total
574% over limit
Discharged 67.4 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Overdue
Coliform, total general
82% over limit
Discharged 4 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
January 31, 2026
Nitrogen, inorganic total
445% over limit
Discharged 54.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
December 31, 2025
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
Nitrogen, inorganic total
391% over limit
Discharged 49.1 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
November 30, 2025
BOD, 5-day, 20 deg. C
693% over limit
Discharged 357 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
Nitrogen, inorganic total
206% over limit
Discharged 30.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1090% over limit
Discharged 357 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
423% over limit
Discharged 157 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
567% over limit
Discharged 0 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
249% over limit
Discharged 157 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Overdue
BOD, 5-day, percent removal
0% over limit
Discharged 0 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Overdue
September 30, 2025
Solids, total suspended
17% over limit
Discharged 0.57658 kg/d against a permitted limit of 0.493952 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
100% over limit
Discharged 90 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
682% over limit
Discharged 352 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
567% over limit
Discharged 0 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, total general
1673% over limit
Discharged 39 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
70% over limit
Discharged 39 MPN/100mL against a permitted limit of 23 MPN/100mL (MO MAX)
DMR, Limited - Numeric Violation
Coliform, total general
9% over limit
Discharged 25 MPN/100mL against a permitted limit of 23 MPN/100mL (MO MAX)
DMR, Limited - Numeric Violation
Coliform, total general
1036% over limit
Discharged 25 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1073% over limit
Discharged 352 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
200% over limit
Discharged 90 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Coliform, total general
48% over limit
Discharged 34 MPN/100mL against a permitted limit of 23 MPN/100mL (MO MAX)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
213% over limit
Discharged 31.3 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, total general
264% over limit
Discharged 8 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
1445% over limit
Discharged 34 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Coliform, total general
36% over limit
Discharged 3 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, total general
1945% over limit
Discharged 45 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
96% over limit
Discharged 45 MPN/100mL against a permitted limit of 23 MPN/100mL (MO MAX)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
117% over limit
Discharged 65 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
93% over limit
Discharged 87 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
187% over limit
Discharged 57 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
44% over limit
Discharged 65 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
190% over limit
Discharged 87 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
173% over limit
Discharged 6 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, inorganic total
16% over limit
Discharged 11.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
193% over limit
Discharged 88 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
213% over limit
Discharged 94 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
96% over limit
Discharged 88 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
180% over limit
Discharged 58 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
109% over limit
Discharged 94 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
93% over limit
Discharged 87 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, total suspended
102% over limit
Discharged 91 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
93% over limit
Discharged 71 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
190% over limit
Discharged 87 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
203% over limit
Discharged 91 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2025
Solids, total suspended
77% over limit
Discharged 53 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
18% over limit
Discharged 53 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Coliform, total general
400% over limit
Discharged 11 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
173% over limit
Discharged 82 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
17491% over limit
Discharged 387 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
82% over limit
Discharged 82 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Coliform, total general
1583% over limit
Discharged 387 MPN/100mL against a permitted limit of 23 MPN/100mL (MO MAX)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
120% over limit
Discharged 67 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, inorganic total
345% over limit
Discharged 44.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, total general
491% over limit
Discharged 13 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
345% over limit
Discharged 44.5 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, inorganic total
400% over limit
Discharged 50 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, total general
264% over limit
Discharged 8 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.00063 MGD against a permitted limit of 0.00435 MGD (30DA AVG)
DMR, Limited - Overdue
Coliform, total general
241% over limit
Discharged 7.5 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
436% over limit
Discharged 53.6 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.0018 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)