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Animal Aquaculture, Harrietta, Michigan. NPDES permit MI0043541 expired Oct 1, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 000 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 000 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 000 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 000 |
| pH | daily minimum | = 6.5 SU | all year | 001 |
| pH | daily maximum | = 9 SU | 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 | daily maximum | = 38 ug/L | all year | 001 |
| Formaldehyde | daily maximum | = 1600 ug/L | all year | 001 |
| Formaldehyde | daily maximum | = 16 lb/d | all year | 001 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 001 |
| pH | daily minimum | = 6.5 SU | all year | 002 |
| pH | daily maximum | = 9 SU | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | = 38 ug/L | all year | 002 |
| Formaldehyde | daily maximum | = 1600 ug/L | all year | 002 |
| Formaldehyde | daily maximum | = 19 lb/d | all year | 002 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 002 |
| Hydrogen peroxide | daily maximum | ≤ 180 ug/L | all year | 003 |
| Hydrogen peroxide | daily maximum | ≤ 2.4 lb/d | all year | 003 |
| pH | daily minimum | = 6.5 SU | all year | 003 |
| pH | daily maximum | = 9 SU | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chlorine, total residual | daily maximum | = 38 ug/L | all year | 003 |
| Formaldehyde | daily maximum | = 1600 ug/L | all year | 003 |
| Formaldehyde | daily maximum | = 21 lb/d | all year | 003 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 003 |
| pH | daily minimum | = 6.5 SU | all year | 004 |
| pH | daily maximum | = 9 SU | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Chlorine, total residual | daily maximum | = 38 ug/L | all year | 004 |
| Formaldehyde | daily maximum | = 1600 ug/L | all year | 004 |
| Formaldehyde | daily maximum | = 19 lb/d | all year | 004 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 004 |
| pH | daily minimum | = 6.5 SU | all year | 005 |
| pH | daily maximum | = 9 SU | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Chlorine, total residual | daily maximum | = 38 ug/L | all year | 005 |
| Formaldehyde | daily maximum | = 1600 ug/L | all year | 005 |
| Formaldehyde | daily maximum | = 44 lb/d | all year | 005 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | H2O |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | H2O |
| Solids, total suspended | daily maximum | = 6 mg/L | all year | H2O |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | H2O |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | H2O |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | H2O |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | H2O |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | H2O |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 5 Agricultural Production — Livestock and Animal Specialties permits in Michigan.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0043541 · MCP: https://passage-data.com/mcp