PERMIT RATIONALE FOR REISSUANCE
Wilkinson County School District, Martin Luther King Career and Technology Center
Wilkinson County
Woodville, Mississippi
Water NPDES No. MS0029696
4/25/2023

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated via an activated sludge system.

IV.	RECEIVING WATERS – West Fork of Thompson’s Creek thence into Thompson’s Creek. West Thompson’s Creek does appear on the current State of Mississippi List of Impaired Waterbodies. A TMDL has not been conducted based on the impairment. A future TMDL may result in new or a reduction in limitations. These waterbodies are in the South Independent Streams drainage basin and are both classified as Fish and Wildlife. 

V.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations (WPC-1), State of Mississippi Water Quality Criteria, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.006 MGD			Design
BOD			30 mg/l (Monthly Average)		Domestic Guidelines
TSS			30 mg/l (Monthly Average)		Domestic Guidelines
E. Coli 		126 Col./100mL (Monthly Average)	Domestic Guidelines
pH			6.0 to 9.0 S.U.		MS WQS
Chlorine		0.1 to 1.0 mg/l		MS WQS

Minimum and Maximum Values for Sludge Settleability, Effluent pH, and Dissolved Oxygen in the aeration unit must be reported.  

No changes in permit limitations from the last reissuance