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Industrial Inorganic Chemicals, major discharger, Memphis, Tennessee. NPDES permit TN0001091, in force until Mar 31, 2028. Last 12 months: over a limit 2 times (last June 2026), 1 of 49 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit |
|---|---|---|---|
| October 2025 | pH, daily maximum | 9.6 SU | ≤ 9 SU |
| June 2026 | pH, daily maximum | 9.2 SU | ≤ 9 SU |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | ≤ 723 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1373 lb/d | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 2081 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 5632 lb/d | all year | 001 |
| Oil and grease, hexane extr method | monthly average | ≤ 694 lb/d | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | ≤ 1339 lb/d | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Carbon, tot organic [TOC] | monthly average | report only (lb/d) | all year | 001 |
| Carbon, tot organic [TOC] | daily maximum | report only (lb/d) | all year | 001 |
| Cyanide, total [as CN] | monthly average | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (mg/L) | all year | 001 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | 001 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .095 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .16 mg/L | all year | 001 |
| Methyl methacrylate | daily maximum | report only (mg/L) (alert, not enforceable) | all year | 001 |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | minimum | > 11.6 % | all year | 001 |
| IC25 Static Renewal 7 Day Chronic Pimephales | minimum | > 11.6 % | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | IMP1 |
| pH | daily maximum | ≤ 9 SU | all year | IMP1 |
| Solids, total suspended | monthly average | ≤ 191.4 lb/d | all year | IMP1 |
| Solids, total suspended | daily maximum | ≤ 414.5 lb/d | all year | IMP1 |
| Carbon, tot organic [TOC] | monthly average | ≤ 105 lb/d | all year | IMP1 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 228 lb/d | all year | IMP1 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | SW11 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | SW11 |
| Solids, total suspended | daily maximum | ≤ 150 mg/L (alert, not enforceable) | all year | SW11 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW11 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW11 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | SW11 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | SW11 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW11 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW11 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | SW11 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | SW11 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | SW11 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | SW11 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L (alert, not enforceable) | all year | SW11 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) (alert, not enforceable) | all year | SW11 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | SW13 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | SW13 |
| Solids, total suspended | daily maximum | ≤ 150 mg/L (alert, not enforceable) | all year | SW13 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW13 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW13 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | SW13 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | SW13 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW13 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW13 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | SW13 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | SW13 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | SW13 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | SW13 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L (alert, not enforceable) | all year | SW13 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) (alert, not enforceable) | all year | SW13 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | SW15 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | SW15 |
| Solids, total suspended | daily maximum | ≤ 150 mg/L (alert, not enforceable) | all year | SW15 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW15 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW15 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | SW15 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | SW15 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW15 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW15 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | SW15 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | SW15 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | SW15 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | SW15 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L (alert, not enforceable) | all year | SW15 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) (alert, not enforceable) | all year | SW15 |
| Methyl methacrylate | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW15 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | SW8 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | SW8 |
| Solids, total suspended | daily maximum | ≤ 150 mg/L (alert, not enforceable) | all year | SW8 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW8 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW8 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | SW8 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | SW8 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW8 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW8 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | SW8 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | SW8 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | SW8 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | SW8 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L (alert, not enforceable) | all year | SW8 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) (alert, not enforceable) | all year | SW8 |
| Methyl methacrylate | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW8 |
| pH | daily minimum | ≥ 6 SU (alert, not enforceable) | all year | SW9 |
| pH | daily maximum | ≤ 9 SU (alert, not enforceable) | all year | SW9 |
| Solids, total suspended | daily maximum | ≤ 150 mg/L (alert, not enforceable) | all year | SW9 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW9 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW9 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4 mg/L (alert, not enforceable) | all year | SW9 |
| Nitrite + Nitrate total [as N] | daily maximum | ≤ .68 mg/L (alert, not enforceable) | all year | SW9 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) (alert, not enforceable) | all year | SW9 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW9 |
| Magnesium, total [as Mg] | daily maximum | ≤ .064 mg/L (alert, not enforceable) | all year | SW9 |
| Copper, total [as Cu] | daily maximum | ≤ .018 mg/L (alert, not enforceable) | all year | SW9 |
| Iron, total [as Fe] | daily maximum | ≤ 5 mg/L (alert, not enforceable) | all year | SW9 |
| Zinc, total [as Zn] | daily maximum | ≤ .395 mg/L (alert, not enforceable) | all year | SW9 |
| Aluminum, total [as Al] | daily maximum | ≤ .75 mg/L (alert, not enforceable) | all year | SW9 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) (alert, not enforceable) | all year | SW9 |
| Methyl methacrylate | daily maximum | report only (mg/L) (alert, not enforceable) | all year | SW9 |
Cited limits by parameter: Tennessee's rules and the federal ones.
Same industry: the 30 Chemicals and Allied Products permits in Tennessee.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/TN0001091 · MCP: https://passage-data.com/mcp