This letter was recieved by the Green Party in Downpatrick when we asked for tests to be carried out on the plank drain which we believe is pumping raw sewage into the Quoile.
The results are can be easily explained by looking at the table below.
As you can see 6-9 is polluted and 100 or greater is very polluted. The results from the plank drain place BOD levels at 77ppm which is a very worrying figure. The results show that the water surrounding the plank drain is in fact highly polluted.
For more information on BOD visit this link: