PERMIT RATIONALE FOR REISSUANCE
Adams County Water Association Inc, Foresite Subdivision
Adams County
Natchez, Mississippi
Water - NPDES No. MS0029611
March 2023

I.	CLASSIFICATION – Domestic NPDES

II.	DESCRIPTION OF WASTEWATER – Minor Domestic

III.	DESCRIPTION OF WASTEWATER TREATMENT – Domestic wastewater is treated via a lagoon followed by disinfection by chlorination and dechlorination prior to discharge.  

IV.	RECEIVING WATERS – St. Catherine’s Creek. The State of Mississippi 303(d) List of Impaired Water Bodies denotes St. Catherine’s Creek, Waterbody ID MS458SCCM, in Adams County to be on the monitored list of impaired waterbodies for biological impairment; this draft permit does not include any proposed increases in BOD5. St. Catherine’s Creek is in the South Independent Streams drainage basin and is classified as Fish and Wildlife.  

V.	APPLICABLE GUIDELINES – 11 MS Admin Code pt. 6,  State of Mississippi Water Quality Criteria, Commercial Facility Guidelines

VI.	SUMMARY OF DISCHARGE LIMITATIONS 
Parameter	VALUE	Basis	
Flow	0.053 MGD	Design	
BOD5	30 mg/l	Commercial Guidelines	
TSS	90 mg/l	Commercial Guidelines	
Ammonia Nitrogen	Report	Previous Permit	
e. Coli	126 Col./100 mL	MS WQS	
pH	6.0 to 9.0 S.U.	MS WQS	
Chlorine, Total Residual	0.1 - 1.0 mg/l	Commercial Guidelines