The Plaintiff in this case sued her neighbour over concerns that her well water had been contaminated by the agricultural field application of municipal sewage waste or biosolids. The neighbour actually leased the land to a farm operation, so he commenced third party claims against both his tenant (the farm operation) and the company that applied the biosolids. The Plaintiff's claims were based on nuisance and negligence.
Justice Heeney of the Ontario Superior Court of Justice dismissed the Plaintiff's claim on the basis that the application of biosolids did not cause the Plaintiff's well to become contaminated. Put another way, the Plaintiff failed to prove, on a balance of probabilities, that the application of the biosolids caused contamination of the well. In his decision, it was not necessary for Justice Heeney to address the question of who might be liable for what.
Evidence in this case was heard over 6 days of trial, and included testimony concerning the application of the biosolids. The application project had been approved by the Ministry of the Environment ("MOECC") following extensive soil testing and other measures. The biosolids were to be applied to 90 acres of wheat stubble. The Plaintiff had a 14-foot dug well just a few feet north of the southerly boundary of her property, in close proximity to the neighbouring field. On the day that the biosolid application commenced, the Plaintiff said water from her shower was "brown and stinky", and smelled like "vomit material".
The Plaintiff's water was tested following the application of the biosolids. There was some detection of coliform, but there had been positive readings of coliform in the well water prior to the biosolid application project. No e.coli was detected. The absence of e.coli in the water was, in Justice Heeney's opinion, the single most significant fact in the case. There was opinion evidence that, if biosolids had entered the well, there would have been a very high level of e.coli in the water that would have been detectable when the water was tested. E.coli is specifically used in water testing as "being the most accurate indicator of fecal contamination - sewage or fecal contamination". Justice Heeney concluded that the biosolid application did not contaminate the Plaintiff's well.
Read the decision at: Marshall v. Shaw.