Water Quality 2017 – Q2

Invermere Quarterly Water Quality Report April – June 2017

Parameter Guideline # of Samples Average Minimum Maximum
Paddy Ryan Lakes (treated)
Total Coliforms, No./100mL 0 3 <1 <1 <1
Escherichia coli, No./100mL 0 3 <1 <1 <1
Chlorine residual, mg/L >0.2 55 0.99 0.82 1.19
Turbidity, NTU <1 51 0.46 0.35 0.73
Temperature, C None 55 14.93 9.2 21.2
pH 6.5-8.5 55 8.18 7.39 8.43
Alkalinity, mg CaCO3/L None 3 169.3 161 180
Total Hardness, mg CaCO3/L None 3 205.3 195 220
Paddy Ryan Lakes (raw)
True Color, C.U. <15 3 <5 <5 <5
TOC, mg/L None 3 1.62 0.9 2.37
UVT, % None 3 >97.7% 95.50% >97.7%
Athalmer Groundwater (treated)
Chlorine residual, mg/L >0.2 53 0.38 0.21 0.59
Turbidity, NTU <1 51 0.22 0.13 0.59
Temperature, C None 52 11.88 8.7 14.7
pH 6.5-8.5 52 8.02 7.45 8.32
Alkalinity, mg CaCO3/L None 1 171 171 171
Total Hardness, mg CaCO3/L None 1 207 207 207
Athalmer Groundwater (raw)
TSS, mg/L None 1 <2 <2 <2
Alkalinity, mg CaCO3/L None 1 167 167 167
Total Hardness, mg CaCO3/L None 1 204 204 204
Chlorine By-products in Distribution System
HAA5s, mg/L <0.08 4 <0.002 <0.002 0.0214
TTHMs, mg/L <0.1 4 0.0127475 0.00534 0.0268