![]() ![]() Note the distinct lack of two and three deep moored liveaboards on the bank.Ĭan you provide us with the evidence for this? I go through 400 litres of water a week, much of which ends up as grey water.īelow, the Stainthorth & Keadby in 2013. There are tens of thousands of boats on the inland waterways that it would be a major pain to retrofit grey water tanks in, plus the extra disposal points that would be required. Not saying grey water isn't a problem, but it needs some evidence provided to back up the assertion. It is so thick it is difficult to turn a narrowboat as the weight of weed resists any rotation of the vessel. Every so often, the Keadby lock keepers flush some in to the Trent. The flow of the canal leads to duck weed backing up for miles along the long pound between Keadby and Thorne Town locks. There are few moorings and fewer moving boats below Thorne. The lower end of the Stainforth & Keadby canal does this most summers. Many European boat builders are now building boats with both Grey & Black tanks as more countries follow Greece and Turkeys lead on pollution control.Ī more draconian method would be to make the whole of London 24 hour mooring which would ensure that boats move and 'stir up the water' a bitĭuckweed proliferates in phosphorous rich water.ĭuckweed needs several things, including weather conditions to go crazy. Whenever you get a large enclave of boats that move infrequently you will get the conditions you describe. (Urine is very rich in Nitrogen, Phosphorous and Potassium and there are proposals to use human urine as an agricultural fertiliser). It tends to be the Nitrogen which is generating the weed growth and that is as a result of using the Canal for emptying the toilets. It does mean however that you now need two waste water tanks (Black & Grey) and will need to visit the pump-out machine much more frequently. ![]() One way would be to follow the lead made by the Mediterranean countries and introduce laws banning grey-water discharge within 12 miles of land.
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