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Sewage treatment plant, major discharger, Joplin, Missouri. NPDES permit MO0103349 expired Sep 30, 2022; its limits still apply. Last 12 months: over a limit 28 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, 30-day geometric mean | 2421 | ≤ 206 #/100mL | 1075% |
| October 2025 | E. coli, 7-day geometric mean | 23055 | ≤ 1030 #/100mL | 2138% |
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 17.5 | ≤ 11.5 mg/L | 52% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 8.86 | ≤ 2.7 mg/L | 228% |
| November 2025 | Cyanide, free [amenable to chlorination], daily maximum | < 20 | ≤ 8.4 ug/L | 138% |
| November 2025 | Cyanide, free [amenable to chlorination], monthly average | < 12 | ≤ 4 ug/L | 200% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 12.1 | ≤ 11.5 mg/L | 5% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 11 | ≤ 2.7 mg/L | 307% |
| December 2025 | BOD, carbonaceous [5 day, 20 C], weekly average | 11 | ≤ 10 mg/L | 10% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 19.9 | ≤ 11.5 mg/L | 73% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 14.9 | ≤ 2.7 mg/L | 452% |
| January 2026 | Nitrogen, ammonia total [as N], daily maximum | 21 | ≤ 11.5 mg/L | 83% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 14.1 | ≤ 2.7 mg/L | 422% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 15.2 | ≤ 11.5 mg/L | 32% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 5.61 | ≤ 2.7 mg/L | 108% |
| April 2026 | E. coli, 30-day geometric mean | 374 | ≤ 206 #/100mL | 82% |
| April 2026 | E. coli, 7-day geometric mean | 5754 | ≤ 1030 #/100mL | 459% |
| May 2026 | E. coli, 30-day geometric mean | 898 | ≤ 206 #/100mL | 336% |
| May 2026 | E. coli, 7-day geometric mean | 3873 | ≤ 1030 #/100mL | 276% |
| June 2026 | E. coli, 30-day geometric mean | 5649 | ≤ 206 #/100mL | 2642% |
| June 2026 | E. coli, 7-day geometric mean | 24196 | ≤ 1030 #/100mL | 2249% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 7.81 | ≤ 4.7 mg/L | 66% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 3.53 | ≤ 1.4 mg/L | 152% |
| July 2026 | E. coli, 30-day geometric mean | 1082 | ≤ 206 #/100mL | 425% |
| July 2026 | E. coli, 7-day geometric mean | 17329 | ≤ 1030 #/100mL | 1582% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 9.46 | ≤ 4.7 mg/L | 101% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 7.37 | ≤ 1.4 mg/L | 426% |
| August 2026 | E. coli, 7-day geometric mean | 19863 | ≤ 1030 #/100mL | 1828% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | weekly maximum | ≤ 20 mg/L | all year | 004 |
| Solids, total suspended | monthly average | ≤ 15 mg/L | all year | 004 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 004 |
| Oil and grease [soxhlet extr.] tot. | monthly average | ≤ 10 mg/L | all year | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 11.5 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Apr–Sep | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.7 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 004 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.4 mg/L | Apr–Sep | 004 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 004 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 004 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 004 |
| Cyanide, free [amenable to chlorination] | daily maximum | ≤ 8.4 ug/L | all year | 004 |
| Cyanide, free [amenable to chlorination] | monthly average | ≤ 4 ug/L | all year | 004 |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year | 004 |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year | 004 |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year | 004 |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year | 004 |
| Zinc, total recoverable | daily maximum | ≤ 269.8 ug/L | all year | 004 |
| Zinc, total recoverable | monthly average | ≤ 152.7 ug/L | all year | 004 |
| Cadmium, total recoverable | daily maximum | ≤ 2.8 ug/L | all year | 004 |
| Cadmium, total recoverable | monthly average | ≤ 1.4 ug/L | all year | 004 |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year | 004 |
| Lead, total recoverable | monthly average | report only (ug/L) | all year | 004 |
| Copper, total recoverable | daily maximum | ≤ 34.4 ug/L | all year | 004 |
| Copper, total recoverable | monthly average | ≤ 13 ug/L | all year | 004 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | 004 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | 004 |
| Chromium, trivalent total recoverable | daily maximum | report only (ug/L) | all year | 004 |
| Chromium, trivalent total recoverable | monthly average | report only (ug/L) | all year | 004 |
| Phenol | daily maximum | report only (ug/L) | all year | 004 |
| Phenol | monthly average | report only (ug/L) | all year | 004 |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year | 004 |
| Pentachlorophenol | monthly average | report only (ug/L) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| E. coli | 7-day geometric mean | ≤ 1030 #/100mL | Apr–Oct | 004 |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Oct | 004 |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year | 004 |
| Mercury, total recoverable | monthly average | report only (ug/L) | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 10 mg/L | all year | 004 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 004 |
| BOD, carbonaceous, percent removal | monthly average minimum | ≥ 85 % | all year | 004 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | SM1 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | SM1 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | SM1 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | SM1 |
| Arsenic, dissolved [as As] | daily maximum | report only (ug/L) | all year | SM1 |
| Arsenic, dissolved [as As] | monthly average | report only (ug/L) | all year | SM1 |
| Cadmium, dissolved [as Cd] | daily maximum | report only (ug/L) | all year | SM1 |
| Cadmium, dissolved [as Cd] | monthly average | report only (ug/L) | all year | SM1 |
| Copper, dissolved [as Cu] | daily maximum | report only (ug/L) | all year | SM1 |
| Copper, dissolved [as Cu] | monthly average | report only (ug/L) | all year | SM1 |
| Lead, dissolved [as Pb] | daily maximum | report only (ug/L) | all year | SM1 |
| Lead, dissolved [as Pb] | median | report only (ug/L) | all year | SM1 |
| Nickel, dissolved [as Ni] | daily maximum | report only (ug/L) | all year | SM1 |
| Nickel, dissolved [as Ni] | monthly average | report only (ug/L) | all year | SM1 |
| Zinc, dissolved [as Zn] | daily maximum | report only (ug/L) | all year | SM1 |
| Zinc, dissolved [as Zn] | monthly average | report only (ug/L) | all year | SM1 |
| Chromium, hexavalent dissolved [as Cr] | daily maximum | report only (ug/L) | all year | SM1 |
| Chromium, hexavalent dissolved [as Cr] | monthly average | report only (ug/L) | all year | SM1 |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year | SM1 |
| Pentachlorophenol | monthly average | report only (ug/L) | all year | SM1 |
| Mercury, dissolved [as Hg] | daily maximum | report only (ug/L) | all year | SM1 |
| Mercury, dissolved [as Hg] | monthly average | report only (ug/L) | all year | SM1 |
| Chromium, trivalent dissolved, as Cr | daily maximum | report only (ug/L) | all year | SM1 |
| Chromium, trivalent dissolved, as Cr | monthly average | report only (ug/L) | all year | SM1 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | SM2 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | SM2 |
Cited limits by parameter: Missouri's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MO0103349 · MCP: https://passage-data.com/mcp