BOD ar COD olop kiman oxygen lage puraibole, faecal coliform bhal gom paani. Aru etai xudhu reportor kotha. Kintu amar factory discharge ta prothom approved hol, aru ami nijeye dekhi daily test koru. Ha, nadiot change ase, kintu agote burhaar bheti to kaam diya nadi khaali koribo pari nai, yaar? Amar polishing lineor chapor sinta besi bhaari.
#india#tests
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