In attention to healthy risks of effluent discharge of wastewater from
   treatment plants to water sources and use in agriculture , this study  was
   carried out for quality assessment of effluent discharge from Serkan
   wastewater treatment plant in Serkan , Hamadan, Iran in summer 1999.

          For this investigation, according to Iranian EPA standard’ s procedure ,
   the mixing sampling method was carried out from effluent over 24 hour ,
   and some of physical ,chemical and biological characteristics of sample
   measured by standard methods.

          According to the results of this research the mean of BOD, COD, TSS,
   NO₃, P were 49,84,237,57,11 mg/l respectively and  amounts of  egg and
   cyst of  parasites were 331 N/L.

          However, the results showed that amounts of some of the characteristics
   including: TDS, Turbidity, Nitrite and heavy metals were in acceptable range
   of national and international standards. But the amounts of other
   characteristic including: BOD, COD, TSS, NO₃ , P, and choliforms index,
   Ascaris eggs, trichocephal, Giardia cyst, Amibiacoli were more than
   standards.