PERMIT RATIONALE FOR REISSUANCE
Jones County Schools, West Jones High School
Jones County
Laurel,, Mississippi
Water NPDES No. MS0031275
August 2026

I.	CLASSIFICATION – Commercial NPDES 

II.	DESCRIPTION OF WASTEWATER – Domestic Wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is collected and treated biologically by means of an aerated lagoon followed by disinfection by chlorine.  No increase in treated effluent flow is proposed within the application. 	

IV.	RECEIVING WATERS – An unnamed creek thence into Horse Creek thence into Tallahoma Creek.  The receiving waters are located within the Pascagoula River Basin and are classified as Fish and Wildlife.  At the point of discharge, the receiving stream does not appear on the 2026 State of Mississippi 303(d) list of evaluated or impaired waterbodies.  Tallahoma and Tallahala Creek appear on the 2020 State of Mississippi 303(d) list of evaluated or impaired waterbodies.  Specifically, both are listed for biological impairment due to aquatic life use support. Only one discharge to surface waters is described within the application with no increase in treated effluent proposed.  Therefore the facility should not further impair water quality.  The discharge also appears on a completed Total Maximum Daily Load (TMDL) for pathogens (December 1999).  The facility utilizes chlorine disinfection, which complies with the conditions of the TMDL.   

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code Pt. 6, Commercial Facility Guidelines (Technology), MS Water Quality Standards, Total Maximum Daily Load (TMDL)

VI.	CHANGES TO PREVIOUS PERMIT - E. coli has replaced fecal coliform as the bacterial indicator for all freshwaters in Mississippi designated as Recreation, Fish and Wildlife Support, and/or Public Water supply.

VII.	SUMMARY OF LIMITATIONS –

	Parameters				Value				Basis
	Flow					0.03 MGD			Design
	BOD5					30 mg/l (Yearly Avg.)		Technology
	TSS					60 mg/l (Yearly Avg.)		Technology
	E. coli					126 Col./100 ml		MS WQS
	Chlorine, Total Residual		0.1 – 1.0 mg/l			Technology
	pH					6.0 – 9.0 SU			MS WQS