Nitrates Table

Images and files on this page demonstrate nitrates levels in Savary Shores since 1989. The current nitrates levels 3.99/100mL at well-1 and 3.95/100mL at well-2 are safely within Canadian Drinking Water Guidelines. Water from both wells combine in the water tanks, so the amount of nitrates consumed at the tap may be closer to an average reading between the two wells.

Nitrates are one of the harmful contaminants derived from human wastewater. They are created by microbes in the septic field. In a properly draining septic system, the nitrogen in nitrates will be taken up by plants, or de-nitrified by other microbes, thereby converting nitrates to harmless molecules. If the septic system has been overloaded, nitrates can accumulate and move into the aquifer without having been treated by natural processes.

In Canada, the safe limit set for nitrates in drinking water is 10mg/L. In 2017, the nitrates reading from SSID's well-1 jumped to 5.14, which was still only half the Maximum Allowable Concentration, but was enough to cause concern about possible further increases. To monitor the situation, SSID's Water Sampler started taking nitrates tests monthly. After the nitrates levels had decreased for a couple of years, we began testing quarterly instead. The Nitrates Table is also available for download as a PDF from the bottom of this webpage. Related documents may be found on the Maintain Your Septic System webpage.

Nitrates at Apr 2024

Nitrates Table


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