Sewer charges are calculated by your water consumption. The sewer rate is $7.50 per 1,000 gallons of water for the first 8,000 gallons used with a minimum charge of $60.00 or 8,000 gallons. Rates for the next 9,000-40,000 gallons are $7.00 per 1,000 gallons and the next 41,000-250,000 rates are $7.125 per 1,000 gallons.
So for example if your water consumption is only 6,000 gallons you will still be charged the minimum of 8,000 or $60.00 for your sewer usage. If your consumption is 10,000 gallons you will be charged $60.00 for the first 8,000 gallons and $7.00 per thouand for the remaining 2,000 gallons; for a total sewer charge of $74.00.