LYONS, CITY OF (WWTP)
NPDES ID: KS0022730
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: 8 effluent violations.
Violations
April 30, 2026
BOD, 5-day, 20 deg. C
21% over limit
Discharged 36.3 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
56% over limit
Discharged 70 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1757% over limit
Discharged 42.7 mg/L against a permitted limit of 2.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
485% over limit
Discharged 42.7 mg/L against a permitted limit of 7.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
133% over limit
Discharged 70 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total suspended
69% over limit
Discharged 76 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
61% over limit
Discharged 48.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
274% over limit
Discharged 36.7 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
919% over limit
Discharged 36.7 mg/L against a permitted limit of 3.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 48.4 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
153% over limit
Discharged 76 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
83% over limit
Discharged 55 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 60 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
22% over limit
Discharged 55 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
714% over limit
Discharged 30.1 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
207% over limit
Discharged 30.1 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
100% over limit
Discharged 60 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
686% over limit
Discharged 29.1 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
197% over limit
Discharged 29.1 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Nitrogen, ammonia total [as N]
657% over limit
Discharged 28 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
186% over limit
Discharged 28 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
198% over limit
Discharged 28 mg/L against a permitted limit of 9.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
866% over limit
Discharged 28 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
419% over limit
Discharged 35.8 mg/L against a permitted limit of 6.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1527% over limit
Discharged 35.8 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
213% over limit
Discharged 12.5 mg/L against a permitted limit of 4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
793% over limit
Discharged 12.5 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
579% over limit
Discharged 22.4 mg/L against a permitted limit of 3.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1767% over limit
Discharged 22.4 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
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
BOD, 5-day, 20 deg. C
476% over limit
Discharged 144 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrite + Nitrate total [as N]
60% over limit
Discharged 16 mg/L against a permitted limit of 10 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
0% over limit
Discharged 5.975 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
413% over limit
Discharged 15.4 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1300% over limit
Discharged 15.4 mg/L against a permitted limit of 1.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Solids, total suspended
75% over limit
Discharged 52.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
858% over limit
Discharged 36.4 mg/L against a permitted limit of 3.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2500% over limit
Discharged 36.4 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
6% over limit
Discharged 5.635 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
52% over limit
Discharged 38.1 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 52.5 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
140% over limit
Discharged 108 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
E. coli
37371% over limit
Discharged 160000 MPN/100mL against a permitted limit of 427 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
260% over limit
Discharged 108 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 46.2 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
3% over limit
Discharged 46.2 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1226% over limit
Discharged 25.2 mg/L against a permitted limit of 1.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
350% over limit
Discharged 25.2 mg/L against a permitted limit of 5.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
E. coli
64537% over limit
Discharged 276000 MPN/100mL against a permitted limit of 427 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
28% over limit
Discharged 38.3 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
303% over limit
Discharged 29.4 mg/L against a permitted limit of 7.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1178% over limit
Discharged 29.4 mg/L against a permitted limit of 2.3 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
58% over limit
Discharged 47.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
5% over limit
Discharged 47.4 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5-day, 20 deg. C
262% over limit
Discharged 163 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1261% over limit
Discharged 49 mg/L against a permitted limit of 3.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
443% over limit
Discharged 163 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
2268% over limit
Discharged 91000 MPN/100mL against a permitted limit of 3843 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Solids, total suspended
113% over limit
Discharged 96 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
220% over limit
Discharged 96 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
400% over limit
Discharged 49 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
232% over limit
Discharged 32.5 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
327% over limit
Discharged 128 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
778% over limit
Discharged 32.5 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
184% over limit
Discharged 128 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
60% over limit
Discharged 72 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
140% over limit
Discharged 72 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
4063% over limit
Discharged 160000 MPN/100mL against a permitted limit of 3843 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total suspended
40% over limit
Discharged 42 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
26% over limit
Discharged 56.7 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
89% over limit
Discharged 56.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
2450% over limit
Discharged 98000 MPN/100mL against a permitted limit of 3843 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
686% over limit
Discharged 29.1 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
197% over limit
Discharged 29.1 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2024
BOD, 5-day, 20 deg. C
109% over limit
Discharged 62.7 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
39% over limit
Discharged 62.7 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
792% over limit
Discharged 33 mg/L against a permitted limit of 3.7 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
237% over limit
Discharged 33 mg/L against a permitted limit of 9.8 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
366% over limit
Discharged 17900 MPN/100mL against a permitted limit of 3843 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
November 30, 2024
BOD, 5-day, 20 deg. C
5% over limit
Discharged 47.2 mg/L against a permitted limit of 45 mg/L (MX WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
239% over limit
Discharged 31.9 mg/L against a permitted limit of 9.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
57% over limit
Discharged 47.2 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1000% over limit
Discharged 31.9 mg/L against a permitted limit of 2.9 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
8045% over limit
Discharged 313000 MPN/100mL against a permitted limit of 3843 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
0% over limit
Discharged 5.98333 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
1527% over limit
Discharged 35.8 mg/L against a permitted limit of 2.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
419% over limit
Discharged 35.8 mg/L against a permitted limit of 6.9 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
3% over limit
Discharged 5.84 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
September 30, 2024
Oxygen, dissolved [DO]
9% over limit
Discharged 5.48 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1821% over limit
Discharged 26.9 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
116% over limit
Discharged 921 MPN/100mL against a permitted limit of 427 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
573% over limit
Discharged 26.9 mg/L against a permitted limit of 4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Oxygen, dissolved [DO]
7% over limit
Discharged 5.566 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
682% over limit
Discharged 25.8 mg/L against a permitted limit of 3.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2050% over limit
Discharged 25.8 mg/L against a permitted limit of 1.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
27% over limit
Discharged 38 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
5% over limit
Discharged 5.68 mg/L against a permitted limit of 6 mg/L (MN WK AV)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
21% over limit
Discharged 30.3 mg/L against a permitted limit of 25 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
467% over limit
Discharged 2419 MPN/100mL against a permitted limit of 427 MPN/100mL (MO GEO)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
753% over limit
Discharged 25.6 mg/L against a permitted limit of 3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2227% over limit
Discharged 25.6 mg/L against a permitted limit of 1.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)