PERMIT RATIONALE FOR REISSUANCE
Louisville Municipal School District, Nanih Waiya Attendance Center
Winston County
Louisville,, Mississippi
Water NPDES No. MS0038768
March 2023

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated through a conventional lagoon.  

IV.	RECEIVING WATERS – Nanih Waiya Creek.  Nanih Waiya Creek does not appear on the updated 303(d) List of Impaired Waterbodies. The discharge is included in completed TMDLs for Nutrients, Fecal Coliform, and Pesticides. The facility disinfects which complies with the TMDL.  One discharge to surface waters is described within the application with no increase in flow proposed. The discharge from this facility should not further impair water quality.  This waterbody is in the Pearl River drainage basin.  Nanih Waiya Creek is classified as Fish and Wildlife.

V.	APPLICABLE GUIDELINES – 11 MS Admin Code,  State of Mississippi Water Quality Criteria (MSWQS), Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter		Value					Basis
Flow			0.01 MGD				Design
BOD			30 mg/l				Domestic Guidelines
TSS			90 mg/l				Domestic Guidelines
Fecal Coliform	200 Col./100mL 			Domestic Guidelines
pH			6.0 to 9.0 S.U.				MS WQS
Chlorine		0.1 to 1.0 mg/l				MS WQS