Nitrates are a product of sewage breakdown. In Canada, the safe limit set for nitrates in drinking water is 10mg/L. Savary Shores well-1 water had been in a stable range of 3.25-3.66 mg/L for 15 years, and the younger well-2 had been a stable range of 1.95-2.01 mg/L for 2 years. In 2017, both readings jumped. To monitor the situation, SSID's Water Sampler is now taking nitrates tests monthly. This Nitrates Table shows data up to November 2018. See also the Nitrate Fact Sheet.pdf at bottom of this page.