EVEN MORE DNAPLS FOUND IN WATERLOO REGION DRINKING WATER WELLS

 

This would be the long contaminated Parkway Wellfield located near Fairway Rd. and Manitou Dr. There are three wells there named K31, K32 and K33. Allegedly the DNAPL chemical (TCE) is found in only one of the wells namely K32. That does not make much sense to me as they are all located close together and what is one should certainly be drawn into the others. Further examination has shed some light on this anomaly. In fact TCE (trichloroethylene) has been detected in all three wells however the text in the July 29, 2025 Grand River Source Protection Area  Assessment Report states " Trichloroethylene is generally not detected (< 0.5 ug/l) at wells K31 and K33". In fact it is detected regularly at low levels and occasionally especially in K33 at higher levels. 

Other health problems include sodium and chloride concentrations being too high. While some of this may be due to road salt it is also common for higher chloride levels in solvent contaminated groundwaters especially chlorinated solvent contaminated groundwater. 

TCE (trichloroethylene) is highly toxic. It both kills and causes extreme health effects from neurological symptoms to various cancers including leukemia. This solvent once was commonly used and abused throughout Waterloo Region industries as a degreaser for metal parts. Workers suffered the brunt of the health damages although the Bishop St. community in Cambridge suffered greatly from Northstar Aerospace mishandling of it as well as at least one other company across the road from Northstar.

Waterloo Region advises in this same Grand River Protection Area report that "...the source of the TCE to well K32 is unknown." I believe that that statement is false as my understanding for years is that there was formerly an Electrohome site also known as Deilcraft located nearby. Also oddly I recollect years after the fact a remediation attempt being done to clean up TCE from that industrial site. Obviously they didn't get all the TCE DNAPL which is unsurprising considering how DNAPL can disperse in the subsurface. The proof of course all these decades later is the dissolved TCE still in the groundwater. Take note Elmira with your ongoing chlorobenzene (DNAPL) contamination.

Happy drinking when this contaminated wellfield rejoins its' fellow retreaded wells into the drinking water regimen. Hey folks we have to keep our well healed developers, builders and politicians happy and if it requires personal sacrifice, so be it.