PERMIT RATIONALE FOR REISSUANCE
Great River Utility Operating Company LLC, Lakeover Estates Subdivision
Lowndes County
Columbus,, Mississippi
Water NPDES No. MS0036897
October 16, 2025

I.	CLASSIFICATION - Commercial

II.	DESCRIPTION OF WASTEWATER AND WASTEWATER TREATMENT - Domestic wastewater is collected and treated via aerated lagoon prior to discharge. 

III.	RECEIVING WATERS – unnamed creek thence into Greens Creek. The receiving waters are located in the Tombigbee River drainage basin and are classified as Fish and Wildlife. At the point of discharge, the receiving stream does not appear on the 2018 State of Mississippi 303(d) List of Impaired Waterbodies, nor does the discharge appear on a completed Total Maximum Daily Load (TMDL).

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

V.	SUMMARY OF DISCHARGE LIMITATIONS - Analytical results shall be submitted annually.

Parameter	Max Monthly
Avg (lbs/day)	Daily
Max (lbs/day)	Max Monthly Avg (mg/L)	Daily
Max (mg/L)	Basis	Sample Type	Monitoring Frequency	
TRC 	N/A	N/A	0.1	1.0	Technology	Grab	Twice/Week	
E. coli 
(col/100 mL)	N/A	N/A	126	410	TMDL	Grab	Semiannually	
Flow (MGD)	0.05	N/A	N/A	N/A	Design	Instantaneous	Twice/Week	
pH (SU)	N/A	N/A	6.0 min	9.0	MSWQS	Grab	Semiannually	
BOD5	12.51	18.76	30	45	Technology	Grab	Semiannually	
TSS	25	25	60	60	Technology	Grab	Semiannually	

VI.	CHANGES FROM 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.