ENVIRONMENTAL FINAL GOVERNING STANDARDS ITALY

ITALY - 4 Wastewater
C4.3.1.3. Existing sources of urban wastewater not regulated under C4.3.1.1 and
C4.3.1.1.1 to waters of Italy will comply with the following effluent limitations:
9.0.
C4.3.1.3.1. BOD5
C4.3.1.3.1.1. The 30-day average will not exceed 45 mg/L.
C4.3.1.3.1.2. The 7-day average will not exceed 65 mg/L.
C4.3.1.3.2. TSS
C4.3.1.3.2.1. The 30-day average will not exceed 45 mg/L.
C4.3.1.3.2.2. The 7-day average will not exceed 65 mg/L.
C4.3.1.3.2.3. The effluent pH values will be maintained between 6.0 and
C4.3.1.4. Sewer Systems. The following requirements apply to urban conglomerates:
C4.3.1.4.1. Urban conglomerates with a number of inhabitant equivalents (IE) ≥
2,000 shall be provided with a sewer system for the collection of urban wastewater.
C4.3.1.4.1.1. In addition, in the Veneto Region urban conglomerates
with a number of inhabitant equivalents (IE) < 2,000 shall be provided with a sewer system for
the collection of urban wastewater by the end of 2014, unless the cost-benefit analysis is
disadvantageous or the construction is not technically feasible due to geomorphologic
characteristics of the area.
C4.3.1.5. DoD-owned or operated wastewater treatment systems with a capacity >
2,000 inhabitant equivalents (IE) shall be equipped with a disinfection system, unless using
natural treatment technologies (such as lagooning or phytopurification).
C4.3.1.5.1. The use of chlorine gas or hypochlorite in the disinfection systems of
urban wastewater treatment plants in the Veneto Region is prohibited beginning 8 December
2012.
C4.3.1.6. Discharge of any wastewater directly onto soils, and shallow subsoil is
prohibited with the exception of the following:
C4.3.1.6.1. Isolated residential areas or sites where connection to a sewer system
is not feasible because of excessive costs and would not result in an increased protection of the
environment (e.g., septic systems).
C4.3.1.6.2. Overflow pipes serving sewer systems.
September 2012 Italy FGS 4-7
Revision 0