RICHWOOD CITY OF
NPDES ID: WV0022004
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: 10 effluent violations.
Violations
May 31, 2026
Oxygen, dissolved [DO]
65% over limit
Discharged 2.08 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Chlorine, total residual
Limit violation
Discharged 0.3 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
129% over limit
Discharged 65.6 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Chlorine, total residual
Limit violation
Discharged 0.3 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Coliform, fecal general
11998% over limit
Discharged 24196 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
53% over limit
Discharged 2.8 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 61.54423948 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
Limit violation
Discharged 0.21 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
5949% over limit
Discharged 24196 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
Limit violation
Discharged 0.21 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
Limit violation
Discharged 0.15 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
Limit violation
Discharged 0.15 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
February 28, 2026
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2026
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
46% over limit
Discharged 6 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
2% over limit
Discharged 5.9 mg/L against a permitted limit of 6 mg/L (INST MIN)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5 day percent removal, dry
317% over limit
Discharged 37.5 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
November 30, 2025
Coliform, fecal general
18% over limit
Discharged 470 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
135% over limit
Discharged 470 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
October 31, 2025
Coliform, fecal general
15% over limit
Discharged 460 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal general
130% over limit
Discharged 460 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 4.2 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
64% over limit
Discharged 25.31049979 kg/d against a permitted limit of 15.43599987 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
11% over limit
Discharged 31.79815973 kg/d against a permitted limit of 28.60199976 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
200% over limit
Discharged 1200 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
14% over limit
Discharged 64.89929945 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
228% over limit
Discharged 25.31049979 kg/d against a permitted limit of 7.71799994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
500% over limit
Discharged 1200 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
26% over limit
Discharged 81.08 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
August 31, 2025
BOD, 5 day percent removal, dry
366% over limit
Discharged 30.05 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 34 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
150% over limit
Discharged 500 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
81% over limit
Discharged 13.96957988 kg/d against a permitted limit of 7.71799994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
25% over limit
Discharged 500 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
137% over limit
Discharged 64.4 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
10% over limit
Discharged 31.48035974 kg/d against a permitted limit of 28.60199976 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
5% over limit
Discharged 4.3 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
48% over limit
Discharged 11.3908599 kg/d against a permitted limit of 7.71799994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
19% over limit
Discharged 82.21 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
45% over limit
Discharged 78.18 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
20% over limit
Discharged 4.9 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, suspended percent removal, dry
105% over limit
Discharged 69.23 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5 day percent removal, dry
152% over limit
Discharged 62.2 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 60.69071949 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
120% over limit
Discharged 66.95 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
168% over limit
Discharged 152.23527872 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
4775% over limit
Discharged 19500 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Lead, total recoverable
15% over limit
Discharged 0.0023 mg/L against a permitted limit of 0.002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
140% over limit
Discharged 64 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
102% over limit
Discharged 69.64 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
16% over limit
Discharged 8.95287992 kg/d against a permitted limit of 7.71799994 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
49% over limit
Discharged 0.0104 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
9650% over limit
Discharged 19500 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, total suspended
34% over limit
Discharged 152.23527872 kg/d against a permitted limit of 113.49999905 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
BOD, 5 day percent removal, dry
168% over limit
Discharged 59.78 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
2% over limit
Discharged 30.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
373% over limit
Discharged 29.07 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
98% over limit
Discharged 112.25149906 kg/d against a permitted limit of 56.74999952 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Lead, total recoverable
30% over limit
Discharged 0.0026 mg/L against a permitted limit of 0.002 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
February 28, 2025
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
122% over limit
Discharged 66.67 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
55% over limit
Discharged 76.81 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
January 31, 2025
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
135% over limit
Discharged 64.74 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Copper, total recoverable
26% over limit
Discharged 0.0088 mg/L against a permitted limit of 0.007 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
190% over limit
Discharged 56.52 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
December 31, 2024
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Hardness, total [as CaCO3]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
103% over limit
Discharged 69.58 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
300% over limit
Discharged 40 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, fecal general
1400% over limit
Discharged 6000 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
9% over limit
Discharged 4.48 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
136% over limit
Discharged 64.58 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
2900% over limit
Discharged 6000 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
448% over limit
Discharged 17.86 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
October 31, 2024
Coliform, fecal general
105% over limit
Discharged 410 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
100% over limit
Discharged 70 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
3% over limit
Discharged 410 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, suspended percent removal, dry
258% over limit
Discharged 46.25 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
5825% over limit
Discharged 23700 MPN/100mL against a permitted limit of 400 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5 day percent removal, dry
160% over limit
Discharged 61.029 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Coliform, fecal general
11750% over limit
Discharged 23700 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
August 31, 2024
Coliform, fecal general
55% over limit
Discharged 309 MPN/100mL against a permitted limit of 200 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, suspended percent removal, dry
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
24% over limit
Discharged 5.1 mg/L against a permitted limit of 4.1 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)