WICHITA LOWER ARK. RIVER PLANT 1&2 (WWTP)
NPDES ID: KS0043036
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: 14 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
310% over limit
Discharged 36.5 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1092% over limit
Discharged 30.98462 mg/L against a permitted limit of 2.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
44% over limit
Discharged 28.86923 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
58% over limit
Discharged 71 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
82% over limit
Discharged 54.73846 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
9% over limit
Discharged 32.55 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
April 30, 2026
E. coli
1731% over limit
Discharged 79620.5128 MPN/100mL against a permitted limit of 4348 MPN/100mL (WKAV GEO)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
260% over limit
Discharged 144 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
427% over limit
Discharged 157.96429 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
355% over limit
Discharged 40.5 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
339% over limit
Discharged 197.5 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
329% over limit
Discharged 107.30769 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
901% over limit
Discharged 2623.31738 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
957% over limit
Discharged 35.93846 mg/L against a permitted limit of 3.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
BOD, 5-day, 20 deg. C
242% over limit
Discharged 85.54615 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
329% over limit
Discharged 38.2 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
610% over limit
Discharged 26.99545 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
450% over limit
Discharged 247.5 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
291% over limit
Discharged 9208.24132 MPN/100mL against a permitted limit of 2358 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
327% over limit
Discharged 128 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
289% over limit
Discharged 155.4 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
19% over limit
Discharged 53.6 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
35% over limit
Discharged 60.66667 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
32% over limit
Discharged 39.74167 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
32% over limit
Discharged 12.5 mg/L against a permitted limit of 9.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2025
BOD, 5-day, 20 deg. C
6% over limit
Discharged 31.9 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
85% over limit
Discharged 8049.45541 MPN/100mL against a permitted limit of 4348 MPN/100mL (WKAV GEO)
DMR, Limited - Numeric Violation
E. coli
13% over limit
Discharged 296.51514 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
June 30, 2025
E. coli
829% over limit
Discharged 2432.73702 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
122% over limit
Discharged 44.4 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
203% over limit
Discharged 13154.8908 MPN/100mL against a permitted limit of 4348 MPN/100mL (WKAV GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
5% over limit
Discharged 31.43077 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
78% over limit
Discharged 53.4 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
289% over limit
Discharged 10.11321 mg/L against a permitted limit of 2.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
124% over limit
Discharged 67.175 mg/L against a permitted limit of 30 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
102% over limit
Discharged 18 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
155% over limit
Discharged 50.90769 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
April 30, 2025
BOD, 5-day, 20 deg. C
51% over limit
Discharged 60.425 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
2% over limit
Discharged 268.17244 MPN/100mL against a permitted limit of 262 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
105% over limit
Discharged 51.2 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
434% over limit
Discharged 18.17136 mg/L against a permitted limit of 3.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1% over limit
Discharged 45.45 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
356% over limit
Discharged 40.6 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 31.04615 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
91% over limit
Discharged 76.3 mg/L against a permitted limit of 40 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
248% over limit
Discharged 31 mg/L against a permitted limit of 8.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
150% over limit
Discharged 62.52308 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
31% over limit
Discharged 58.75 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
580% over limit
Discharged 25.85625 mg/L against a permitted limit of 3.8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
76% over limit
Discharged 52.90769 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
BOD, 5-day, 20 deg. C
64% over limit
Discharged 73.63333 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
155% over limit
Discharged 114.66667 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
39% over limit
Discharged 41.73333 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
27% over limit
Discharged 37.99167 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
44% over limit
Discharged 13.7 mg/L against a permitted limit of 9.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)