PERMIT RATIONALE FOR REISSUANCE
Phillip Water and Sewer Association
Tallahatchie County
Philipp, Mississippi
Water NPDES No. MS0055361
July 2022

I.	CLASSIFICATION – NPDES Commercial

II.	DESCRIPTION OF WASTEWATER – Domestic wastewater

III.	DESCRIPTION OF WASTEWATER TREATMENT –Wastewater is collected and treated biologically via a 2-cell conventional lagoon followed by chlorine tablet disinfection prior to discharge.  Only one discharge to surface waters is described in the application with no increase in treated effluent flow proposed.   

IV.	RECEIVING WATERS – Tallahatchie River. The Tallahatchie River is located in the Yazoo River basin and is classified as Fish and Wildlife. The receiving stream does not appear on the current State of Mississippi 303(d) List of Impaired Waterbodies. The discharge is listed in a completed Total Maximum Daily Load (TMDL) for Total Nitrogen and Total Phosphorus for Selected Large Rivers in the Delta (June 2008).  This permit requires quarterly monitoring of Total Nitrogen and Total Phosphorus, which complies with the conditions of the TMDL. 

V.	APPLICABLE GUIDELINES – 11 Mississippi Admin Code pt. 6, State of Mississippi Water Quality Criteria (MSWQS), Commercial Facility Guidelines (Technology), Wasteload Allocation (WLA), TMDL

VI.	SUMMARY OF DISCHARGE LIMITATIONS – 

Parameter			Value				Basis
Flow				0.08 MGD			Design
BOD				15 mg/l			WLA
Ammonia Nitrogen		5 mg/l				WLA
TSS				90 mg/l 			Technology
E. coli				126 Col./100 ml 		MSWQS
pH				6.0 to 9.0 S.U.			MSWQS
Chlorine			0.1 to 1.0 mg/l			Technology
Nitrogen			Report	lbs/day			TMDL
Phosphorous			Report	lbs/day			TMDL