Water Quality 2017 – Q1

Invermere Quarterly Water Quality Report January – March 2017

Parameter Guideline # of Samples Average Minimum Maximum
Paddy Ryan Lakes (treated)
Total Coliforms, No./100mL 0 4 <1 <1 <1
Escherichia coli, No./100mL 0 4 <1 <1 <1
Chlorine residual, mg/L >0.2 60 0.9 0.4 1.3
Turbidity, NTU <1 60 1 0.6 1.7
Temperature, C None 60 8.4 5.9 11.1
pH 6.5-8.5 60 7.9 7.6 8.2
Alkalinity, mg CaCO3/L None 5 180.4 167 187
Total Hardness, mg CaCO3/L None 6 222.8 201 236
Paddy Ryan Lakes (raw)
True Color, C.U. <15 1 <5 <5 <5
TOC, mg/L None 5 1.2 0.9 1.59
UVT, % None 1 98 98 98
Athalmer Groundwater (treated)
Chlorine residual, mg/L >0.2 56 0.3 0.3 0.3
Turbidity, NTU <1 56 0.2 0.1 0.3
Temperature, C None 56 9.7 7.3 12.1
pH 6.5-8.5 56 8.1 7.8 8.3
Alkalinity, mg CaCO3/L None 1 175 175 175
Total Hardness, mg CaCO3/L None 1 194 194 194
Athalmer Groundwater (raw)
TSS, mg/L None 1 <2 <2 <2
Alkalinity, mg CaCO3/L None 1 175 175 175
Total Hardness, mg CaCO3/L None 1 202 202 202
Chlorine By-products in Distribution System
HAA5s, mg/L <0.08 4 <0.002 <0.002 0.00476
TTHMs, mg/L <0.1 4 0.0077 0.00536 0.0107