NZWWA

AcronymDefinition
NZWWANew Zealand Water and Wastes Association
References in periodicals archive ?
NZWWA (2002) 'Guidelines for the safe application of biosolids to land in New Zealand.
In 'Conference Papers of the 2001 NZWWA Annual Conference and Expo'.
NZWWA grades are PU = public use grade, A = agricultural grade, and NA = non-agricultural grade
0 2000 NZWWA Grade PU Grade A Grade NA Soil MPC Pollutant (mg/kg) (mg/kg) (mg/kg) (mg/kg) As -- -- -- -- Cd 1 3 6 1 Cr 600 1800 3600 600 Cu 100 300 600 100 Pb 300 900 1800 300 Hg 1 3 6 1 Mo -- -- -- -- Ni 60 180 360 60 Se -- -- -- -- Zn 300 900 1800 300