Mesures hebdomadaires concentrations coliformes/100 ml station Rivière des Prairies (RDP) – 140 à Pierrefonds-Roxboro durant la période de May-Sept 2010

2010 – 10 semaines sur 14 ont ete polluees / 10 weeks out of 14 were considered polluted
…….Date………Col. Fec / 100ml **
Aug 17 2010…………. 6000 = polluted = 6 x 1000
Aug 11 2010…………. 100
Aug 01 2010…………. 180
July 27 2010…………. 10000 = polluted = 10 x 1000
July 19 2010…………. 60000 = polluted = 60 x 1000
July 14 2010…………. 3400 = polluted = 3.4 x 1000
July 04 2010…………. 2100 = polluted = 2.1 x 1000
June 28 2010…………. 6000 = polluted = 6 x 1000
June 22 2010…………. 6000 = polluted = 6 x 1000
June 16 2010…………. 6000 = polluted = 6 x 1000
June 06 2010………….66000= polluted = 66 x 1000
May 31 2010…………. 08
May 25 2010…………. 140
May 19 2010………… 1400= polluted = 1.4 x 1000
** Notez qu’une valeur de 1000 ou plus indique de l’eau polluée

2010-07-14 – One year after fix announced, sewage still flows into river from Pierrefonds

2010-06-06 – 66000/100 ml
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June 14 2010 Letter sent to West Island Gazette

To: West Island Gazette
Subject: Pollution- Riviere des Prairies

Last year I wrote to you concerning the persistent serious pollution of the Riviere des Prairiesr near Rive Boisee street. The problem has existed for many years, and I felt that it was time to do something about it.

Upon bringing up the situation at the Borough Council, I was assured that the problem was caused by crossed connections, and that the city would correct the problem.

You can imagine my disappointment when,upon regarding the results this year, it appears that the situation has become worse. During the last test (june 6 2010), the pollution was at a stratospheric 66000 coliform per 100 ml. Note that 1000 is considered polluted. Also, I noted that four other points in Pierrefonds-Roxboro were seriously contaminated.

It is clear that the borough has a serious problem when after every rainfall, the sewers overflow to this extent, since with the increasing development,the problem can only get worse in the future.

George Boutilier, Pierrefonds

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Coliformes 2004 à 2009

River Pollution de la rivière