Water Quality 2017 – Q4

Invermere Quarterly Water Quality Report October – December 2017

Parameter Guideline # of samples Average Minimum Maximum
Paddy Ryan Lakes (treated)
Total Coliforms, No./100mL 0 2 <1 <1 <1
Escherichia coli, No./100mL 0 2 <1 <1 <1
Chlorine residual, mg/L >0.2 51 0.91 0.68 1.67
Turbidity, NTU <1 50 0.45 0.31 1.1
Temperature, C None 51 9.43 5.8 13.9
pH 6.5-8.5 51 8.18 7.68 8.76
Alkalinity, mg CaCO3/L None 2 160.5 156 165
Total Hardness, mg CaCO3/L None 3 206.7 199 214
Paddy Ryan Lakes (raw)
True Color, C.U. <15 2 <5 <5 <5
TOC, mg/L None 2 1.87 0.65 3.08
UVT, % None 2 96.2 95.9 96.4
Athalmer Groundwater (treated)
Chlorine residual, mg/L >0.2 42 0.34 0.25 0.44
Turbidity, NTU <1 42 0.38 0.22 0.56
Temperature, C None 42 10.51 7.1 13.3
pH 6.5-8.5 42 8.06 7.58 8.31
Alkalinity, mg CaCO3/L None 1 196 196 196
Total Hardness, mg CaCO3/L None 1 203 203 203
Athalmer Groundwater (raw)
TSS, mg/L None 1 <2 <2 <2
Alkalinity, mg CaCO3/L None 1 179 179 179
Total Hardness, mg CaCO3/L None 1 215 215 215
Chlorine By-products in Distribution System
HAA5s, mg/L <0.08 4 0.018 0.010 0.026
TTHMs, mg/L <0.1 4 0.016 0.010 0.020