Town of Tisdale
2020 Drinking Water Quality and Compliance
Annual Notice to Consumers
Introduction
Saskatchewan Ministry of Environment requires that at least once each year waterworks owners provide notification to consumers of the quality of water produced and supplied as well as information on the performance of the waterworks in submitting samples as required by a Minister’s Order or Permit to Operate a waterworks. The following is a summary of the Town of Tisdale water quality and sample submission compliance record for the January 1 to December 31, 2020 time period. This report was completed on June 10, 2021. Readers should refer to Environment’s Municipal Drinking Water Quality Monitoring Guidelines, November 2002, EPB 202 for more information on minimum sample submission requirements and the meaning of type of sample. Permit requirements for a specific waterworks may require more sampling than outlined in the department’s monitoring guidelines. If consumers need more information on the nature and significance of specific water tests, for example, “what is the significance of Selenium in a water supply”, more detailed information is available from:
http://www.hc-sc.gc.ca/ewh-semt/pubs/water-eau/index_e.html
.
Water Quality Standards Bacteriological Quality
Regular Samples Regular Samples # of Positive Regular
Parameter/Location Limit Required Submitted Submitted (%)
Total Coliform and 0 Organisms/100 mL 52 52 0 (0.0%)
Background Bacteria Less than 200/100 mL
- Many samples did not make it to the lab in time due to currier issues, all required samples were submitted
Water Disinfection
Chlorine Residual in Distribution System for Test Results Submitted with Bacteriological Samples
Minimum Total Chlorine Free Chlorine # Tests # Tests # Adequate
Parameter Limit Residual Range Residual Range Required Submitted Chlorine (%)
Chlorine 0.1 mg/L free OR
Residual 0.5 mg/L total 0.54 – 0.96 0.42 – 0.86 52 52 52 (100%)
Water Disinfection – Free Chlorine Residual for Water Entering Distribution System from Waterworks Records-
From Water Treatment Plant Records
Test Level # Tests # Tests Not Meeting
Parameter Limit (mg/L) Range Performed Requirements
Free Chlorine Residual at least 0.1 0.47 – 1.25 365 0
A minimum of 0.1 milligrams per litre (mg/L) free chlorine residual is required for water entering the distribution system.
Tests are normally performed on a daily basis by the waterworks operator and are to be recorded in operation records.
This data includes the number of free chlorine residual tests performed, the overall range of free chlorine residual
(highest and lowest recorded values) and the number of tests and percentage of results not meeting the minimum
requirement of 0.1 mg/L free chlorine residual.
Turbidity – From Water Treatment Plant Records
Parameter Limit Test Level # Tests Not Meeting Maximum # Tests # Tests
(NTU) Range Requirements Turbidity (NTU) Required Performed
Turbidity 1.0 0.06 – 0.20 0 0.20 365 365
Turbidity is a measure of water treatment efficiency. Turbidity measures “clarity” of the drinking water and is generally reported in Nephelometric Turbidity Units (NTU). All waterworks are required to monitor turbidity at the water treatment plant. The frequency of measurement varies from daily for small systems to continuous for larger waterworks.
Chemical – Health Category
All waterworks serving less than 5000 persons are required to submit water samples for SE’s Chemical Health category once every 2 years. The Chemical Health category includes analysis for arsenic, barium, boron, cadmium, chromium, fluoride, lead, nitrate, selenium and uranium.
The last sample for Chemical Health analysis was submitted on May 14, 2019. Sample results indicated that the provincial drinking water quality standards were not exceeded.
Limit Limit Sample # Samples
Parameter MAC(mg/L) IMAC (mg/L) Result(s) Exceeding Limit
Arsenic 0.025 0.003 0
Barium 1.0 <0.0005 0
Boron 5.0 0.13 0
Cadmium 0.005 0.00001 0
Chromium 0.05 <0.0005 0
Fluoride (*) 1.5 0.84 0 (0.64 – 1.54 at WTP, 1 test was over range, asides that, the testing range was 0.64 – 1.30 at the WTP)
Lead 0.01 <0.0001 0 Nitrate 45.0 0.06 0
Seleniuum 0.01 <0.0001 0
Uranium 0.02 <0.0001 0
General Chemical
Aesthetic Sample Results # Samples # Samples
Parameter Objectives * (mg/L) (average) Required Submitted
Alkalinity 500 83 1 1
Bicarbonate No Objective 101 1 1
Calcium No Objective 3.8 1 1
Carbonate No Objective < 1 1 1
Chloride 250 2.4 1 1
Conductivity No Objective 178 1 1
Hardness 800 14 1 1
Magnesium 200 1.2 1 1
PH No Objective 7.76 1 1
Sodium 300 37 1 1
Sulphate 500 7.4 1 1
Total dissolved
Solids 1500 107 1 1
All waterworks serving less than 5000 persons are required to submit water samples for SE’s General Chemical category once every two years if a ground water source. The General Chemical category includes analysis for alkalinity, bicarbonate, calcium, carbonate, chloride, conductivity, hardness (as CaCO3), magnesium, sodium, sulphate and total dissolved solids.
More information on water quality and sample submission performance is available upon request.
More information on water quality and sample submission performance may be obtained from:
Town of Tisdale
Box 1090, Tisdale, Sask.
Phone #: 1-306-873-2681, Fax #: 1-306-873-5700
