Universitā degli studi di Roma “Tor Vergata” - ART - TORVERGATA ...

As a conclusion of the results of the research presented above, since bacteria and viruses
can penetrate into the groundwater and persist for a long period the microbiological approach for
the exfiltration investigation should be an useful tool. Neverthless uncertainty remains about:
• the real and actual source of contamination (e.g., septic tanks or sewer);
• the sewer reach damaged which wastewater comes from;
• the actual sewer state, because such a markers could mean an old contamination
by exfiltration phenomena occurring in the past.
Thus it might be more accurate to use conservative tracers directly added into running
sewer pipes in well known network part and time for quantifying directly the water losses (Ellis,
2001). Such an approach has been used by the European research project APUSS which
principal aim has been to develop two methods for quantifying exfiltrations by dosage of
chemical conservative and non-buoyant tracers into running sewer reaches.
1.3 Sewer pipe deterioration
About this topic a literature review was done and published in an Italian journal:
Giulianelli, M.; Prigiobbe, V. (2004). Infiltrazione di acque di falda nelle fognature.
L’ACQUA, 6, pp. 41-50.
In annex 1
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