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Các loại tiêu chuẩn và chỉ tiêu đánh giá chất lượng nước : YIO6,5H@C@0f6> P >=0 @S  @A    @A  c    >  23  5 H@C0>?@A@ >.$ (/+,?@AB 0 CDE P 6> P S0DS0cS4,S6> P o6E P S6> P ROT\& >.$ (/+,?@(4E(F$6> P +SH@C5H8 HUSW23pqrSeqrSOS.D0sS H?DS  2DS  0S  ?S  ?S  S   DE34H@CS[0HTZ P SD3?b2-DS 5_?U47D56> P [&    t .$ (/+,?@?+((F$ eHu?0Sv^H 2?^D2SQ234[D_#D[S[,[B\ YI60f6> P >=00>?@A@S @A@Acch tiêu ph bin H     j (G C*CH+, H5[>? @46@CO  6,9w Ha0> P 0oD @LD5HaEDD_& j(&$I&JKL?+((4EMN"HH@CO .#6OR59_gD8? @?0> P [AO6,A A?+(AB 0 (!&O(P&    j(&$I&JKL(4E(F$MN" HH@CO .#6OR9_gD8R?0oD eq  4+  q&    3.1.5.Ô nhiễm nước và quản lý chất lượng nước ở nước ta : Ye>;R46>,Rl*@ ?@7D6>,$+1S+eGS+ SIx&&&)4[D>;$*;?KS p/ST&&&)6y9,>=0@& YILDHM 4N@S91:a e> ;4G>?@A6y9Di94;0> ?@ASEDD_475H@C@& . S@A- 9E P >=04>8S>=0gD8S>=0R 5S>=0424- P S8a4- P HM$> =0E P Z P 5H8HU[>)S> =0ROT& YTheo v tr không gian@A-9E P >=0 2>S>=0FS>=09S>=0@0Z P S >=0@.0 3.1.3 Quản lý và chống ô nhiễm các vực nước. gianR= ?@AODEZ P fA2N3?V?& YTheo cc tc nhân gây ô nhim S@A- 9E P >=04>8S>=0gD8S>=0R 5S>=0424- P S8a4- P HM$> =0E P Z P 5H8HU[>)S> =0ROT& YTheo. HH@CO .#6OR9_gD8R?0oD eq  4+  q&    3.1.5 .Ô nhiễm nước và quản lý chất lượng nước ở nước ta : Ye>;R46>,Rl*@ ?@7D6>,$+1S+eGS+ SIx&&&)4[D>;$*;?KS p/ST&&&)6y9,>=0@& YILDHM