ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 4 Wastewater
Parameter Unit
Table 4.1. Wastewater Discharge Limits for All Sources
Urban Wastewater
Discharge to a
Surface Water
BOD5 (as O2) mg/L 2,000-10,000 IE
25 (without
nitrification) or 70-
(2) (5)
90% reduction
>10,000 IE
25 (without
nitrification) or 80%
reduction (2)
Daily Average (1)
COD (as O2) mg/L 2,000-10,000 IE
125 or 75%
reduction (3)
>10,000 IE
125 or 75%
reduction (3)
Daily Average (1)
TSS (2) mg/L 2,000-10,000 IE
35 or 90%
(4) (5)
reduction
>10,000 IE
35 or 90%
(4) (5)
reduction
Urban Wastewater
commingled with Industrial
1 (20)
Wastewater
Discharge to Discharge to
Italian Sewer Surface Water
System (10)
Industrial
Wastewater and
Urban
Wastewater
Discharge to
Soil (18)
max 250 40 20
max 500 160 100
max 200 80 ) 25
Daily Average (1)
pH 6.0-9.0 6.0-9.0 6.0-9.0 6 – 8
SAR -- -- -- 10 (16)
Temperature
o
C -- o
generally 3 C
above receiving
water temp (11)
generally 3 o C
above receiving
water temp (11)
--
Color -- not perceptible not perceptible
--
after 1:40 dilution after 1:20 dilution
Odor -- cannot be a source Cannot be a source --
of nuisance or of nuisance or
discomfort discomfort
Coarse
material
-- Absent Absent Absent
1 For parameters other than those listed in the column titled “Urban Wastewater”
September 2012 Italy FGS 4-20
Revision 0