Boats and sewerage: game over?

The subject is not totally taboo, but in 40 years of activity on the inland waterways, a ‘world of its own’, I have found that people prefer to avoid it. ‘The less said the better’, seems to be the motto ! Confronted with two conflicting ‘politically correct’ opinions, Euromapping decided to undertake a detailed survey, starting on March 1st 2013, to get a precise overview.
It is hardly a caricature to say that ‘canal folk’ justify their direct discharge into the canal by arguing that the environment easily absorbs the effluent load. On the other side, landlubbers are horrified by the idea that tourists are free to ‘do it’ in the canal and shocked by the fact that this ‘public convenience’ is used free of charge.
Historically involved in development of the waterways in SW France, Euromapping is ideally placed to conduct this investigation and assemble reliable data on the Canal des Deux Mers, despite the reluctance of players to address the subject.
All are aware of what is required by EU and French law. The manufacturers know better than anyone, since they fit their boats with the necessary holding tanks, but marine toilets are still the norm on many boats.
The questions are straightforward :
– How are boats equipped for sewerage ?
– Do trip boats, hotel boats, etc. have separate holding tanks for grey water and black water ?
– What is the storage volume ?
– Are pumps integrated on board ?
– What is the interval between pump-outs ? Where are they done ? and by what methods ?
These are followed by qualitative questions designed to note the sensitivities of users and their willingness to pay sanitation services, for those who today have no alternative but to discharge into the canal.
Canals as ecosystems : a session at the World Canals Conference – to be held in Toulouse on 16-19 September – is devoted to this murky subject. It was time for the consulting firm Euromapping to clarify the stakes, with its partners.

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