Just to let you know that we are still alive and fighting this issue. The Mayor (who had our letter on the 23rd July explaining everything - has done nothing - what a surprise). So due to the fact that the neighbour with poisoning water habits decided to have a dispute with us because we had not cut the grass he had illegally placed on our land, after illegally killing the previous grass there we decided to take the matter further. We contacted the Rivers and Waters Authorities of Brittany they read the email, saw the photos and plan of our land and the lottisement attached.
They sent us back the email in the form of a letter with the appropriate statute addressed to Onema and DDTM together with the photos and plan (within two days of having received our email).
We then took a copy of this letter to the Mayor's office (approximately 6/8 weeks after speaking to him about the issue) and asked his secretary if she had typed a letter to Onema or DDTM on his behalf - she said no, so we said as we did not wish to be impolite we would give him a copy of our letter. We then sent the originals (last Thursday) and lo and behold this Wednesday (when I was working dressed in my old nightie and pyjamas) there was a knock on the door and there were two officials from Onema, I took them over the land, they took photos and said in this instance they would issue said neighbour with a warning either by phone or by letter and that should he attempt to spray on our land again let them know. They thanked me for informing them and said they have so much problems with Roundup that it is quite frankly a nightmare.
They also told me that my land was agricultural and that DDTM might not view the matter of illegal spraying onto agricultural land so lightly as they felt they would in this first instance. So the Mayor who said he was waiting for a response from DDTM about the zonage of my land (a letter I had written in March that the DDTM decided to send to the Mayor) before he could discuss with me about the matter of my bad neighbour obviously does not get the results that an individual with an email system can.
The man from Onema and other friends have said that my bad neighbour needs to know that he cannot take these actions of tresspass and illegal spraying any further without me resorting to informing the appropriate authorities. The water in the affected pond is discolored and seems to have no insect life and I am not allowed to place in any pond weed for oxygenation unless I take it from a local public lake as it will have been approved of - so I will be taking a plastic bag to the nearest public lake to fish some appropriate weed out for my pond.