Moddai 119-i Kodeksi obi Jumhurii Tojikiston. Vazifai hifzi ob
Tamomi ob ( obekthoi ob) az iflosu oludashavi va kamshavi, ki metavonand ba salomatii aholi zarar rasonda, dar natijai tagyir yoftani khususiyathoi fiziki, kimyovi va biologi past shudani qobiliyati khudtozashavii tabii boisi vayron gardidani nizomi gidrologi va gidrogeologi, kam shudani zakhirahoi mohi, bad shudani obtaminkuni va digar zuhuroti nomatlub gardand, boyad hifz karda shavand.