Effluent Water Quality Standards for Human Health Protection (Japan)
WEPA Water Environment Partnership in Asia
close

Effluent Water Quality Standards for Human Health Protection

Basis for setting values
Type of Toxin Permissible Limit
cadmium and its compounds 0.1mg/L
cyanide compounds 1mg/L
organic phosphorus compounds
(parathion, methyl parathion, methyl demeton and EPN oniy)
1mg/L
lead and its compounds 0.1mg/L
sexivalent chrome compounds 0.5mg/L
arsenic and its compounds 0.1mg/L
total mercury
0.005mg/L
alkyl mercury compounds
Not detectable
PCBs
0.003mg/L
trichloroethylene
0.3mg/L
tetrachloroethylene
0.1mg/L
dichloromethane
0.2mg/L
carbon tetrachloride
0.02mg/L
1,2-dichloro ethane 0.04mg/L
1,1-dichloro ethlene
0.2mg/L
cis-1,2-dichloro ethylene
0.4mg/L
1.1.1-trichloro ethane
3mg/L
1.1.2-trichloro ethane
0.06mg/L
1,3-dichloropropene
0.02mg/L
thiram
0.06mg/L
simazine
0.03mg/L
thiobencarb
0.2mg/L
benzene
0.1mg/L
selenium and its compounds
0.1mg/L
boron and its compounds
Non- Coastal Regions 10mg/L
Coastal Regions 230mg/L
flouride and its compounds
Non- Coastal Regions 8mg/L
Coastal Regions 15mg/L
ammonia, ammonium compounds, nitrate and nitrite compounds
(*)100mg/L
(*) Total of ammonia-N multiplied by 0.4, nitrite-N, and nitrate-N.

Remarks
“Not detectable” means that when the substance is measured by the method specified by the Minister of the Environment, the amount is less than the quantitative limit defined by that method.
pagetop   close