All establishments hereafter enlarged or built that produce estimated sewage flows of 10,000 gallons or more per day shall provide secondary treatment prior to discharge into or onto the ground. Effluent from a sewage treatment plant can be considered to have undergone secondary treatment if it is within the following limits:
(A) For 5-day biochemical oxygen demand (BOD5):
(1) No greater than 30 milligrams per liter averaged over any 30-day period;
(2) No greater than 45 milligrams per liter averaged over any 7-day period.
(B) For total suspended solids:
(1) No greater than 30 milligrams per liter averaged over any 30-day period;
(2) No greater than 45 milligrams per liter averaged over any 7-day period.
(C) For bacteria: less than 200 fecal coliform M.P.N. per 100 milliliters.
(1986 Code, § 208-3) (Ord. —, passed 9-1-1978; Am. Ord. —, passed 1-6-1981; Am. Ord. —, passed 3-1-1993)