Guidelines for irrigation water quality (G.N. No. 617 of 1999)

General Notice No. 6/7 of /999 I\Uf\ISTRY OF ENVlROf\!\IE1'iT, HUMA1'i RESOURCE DEVELOPMEl'i'T & EMPLOYMENT Department of Environment Guidelines for irrigation water quality The following guidelines refer to the quality of water used for irrigation, and are meant to help the' planting community. The guidelines tire general in nature, and should not be associated with any specific type ofinigation method, crop or soil.They have been based mainly on guidelines from Food .and Agricultural Organisation (FAO). 0.2 , , ;. .,» ,lla.t limit 35 5.0-9.0 20 Not Objection"!>k 30 90 45· 250 500 IS ·5 2000 <6 S.C v.02 o.o I 0.1 0.1 0.i5 0.01 0.10 0.05 0.20 5.Q 1.0 0.01 o.t 2.') J.Q j<l\ vi;i~i: oil 5 1000 SI Hazen mg'l mg.' I mg/I mg/I lUg.!J lilg:'~ mg/I ~tS.'C'" Unit ··C mg'~! mi'l mg'l n1~:1 "'1'./ mg"1 mg:1 l:lg! t mg' • m~'! mg), 111;'( I m~'J o::~' I \~·.:{t .:::.:. i l:!~'- I 1:1~' J :\~i:;'nt:::·: .... Parameters Temperature pH '" Colour Odour \":u::l:b;;:: Zin~' Biochemical Oxygen Demand (DOD,) Chemical Oxygen Demand (COD) . Suspended Solids Chloride ' Sulphate . Nitrat~·Nitr(l~~n 'Ammonia·N EtectricalConductivity Sodium adsorptioo Ratio (SAR) :\(u:niniu:'i::' Aucnic :.. 1~')'i1ill:n gV~:1 •.. Cadmiu.n ... Chrt>:lli'Jti~ Cob~h Cl'p::,,,,~ . Irui': Lead lithium ~J.iing;lnc~:: ;-..t~i':\:;Y ... ;\10:yhf ~;: :l;::