Rural Municipality of Taché

Departments & Services

Informational Bulletin - Landmark Public Water System
The Landmark Public Water System is monitored on an ongoing basis by Certified Public Water System Operators. This monitoring is undertaken to protect the quality of the drinking water to determine any pre-existing bacteriological contamination in the raw groundwater prior to disinfection with chlorine and also to monitor the levels of the disinfectant as it leaves the two pump houses in Landmark and throughout the water distribution system in town. This monitoring is reported on a continuous basis to the Province of Manitoba, Office of Drinking Water, who are the regulators of Public Water Systems.
In the last few months occasional bacteriological counts have occurred on the raw groundwater monitoring prior to its disinfection with chlorine. While this contamination on the raw groundwater occurred on a few rare occasions in past years, the frequency of occurrence has increased over the last few months (as an example 2 times in the month of December), which is indicative of some changes in the quality of the raw groundwater. Groundwater in the Landmark Area has many naturally occurring elements in its composition, one of which is ammonia. The levels of ammonia in the groundwater vary on a continuous basis and this ammonia interacts with the chlorine.
This fluctuation of ammonia and its reaction with chlorine in a time when occasional bacteria samples are detected in the raw groundwater requires close attention, as has been the case. Some of you will have experienced odours in your home which are a result from the ammonia interacting with the chlorine; this is sometimes referred to as the "hot tub effect”.
System Operators are working closely with the Office of Drinking Water to confirm operating & testing parameters with the variables occurring in the raw groundwater, to ensure an ongoing safe drinking water supply and to minimize the "hot tub effect” from fluctuating ammonia levels in the groundwater.
Longer term solutions to improve the Landmark Public Water System will require significant investments to the infrastructure and the LUD Landmark Committee continues to examine cost effective options on that infrastructure and funding to support the required improvements. Future updates pending any changes regarding the Landmark Public Water System will be available on the Municipalities website at