PERMIT RATIONALE FOR REISSUANCE
Wilkinson County School District, Wilkinson County High School
Wilkinson County
Woodville, Mississippi
Water NPDES No. MS0029700
5/10/23

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 – Bayou Sara Creek thence into Thompson’s Creek. Neither Bayou Sara Creek nor Thompson’s Creek appears on the current State of Mississippi 303(d) List of Impaired Waterbodies. The discharge is not listed in a completed TMDL. These waterbodies are in the South Independent Streams drainage basin and are classified as Fish and Wildlife. 

V.	APPLICABLE GUIDELINES – State of Mississippi Wastewater Regulations (11 Admin Code Part 6 Chapter 1), State of Mississippi Water Quality Criteria, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS –

Parameters	Value					Basis
Flow		0.04 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
Chlorine	0.1 to 1.0 mg/l		MS WQS
pH		6.0 to 9.0 S.U.		MS WQS
Minimum DO	6.0 mg/l (Effluent)		MS WQS

The minimum and maximum values for Influent pH, Dissolved Oxygen in aeration unit, and 30-Minute Sludge Settleability in aeration unit must be reported

VII.	CHANGES FROM PREVIOUS PERMIT-

None