If contaminants are naturally occurring and are not expected to increase, or the test result is limits specified in the Ontario Drinking Water Quality Standards, repeat testing may not be required. The Ontario Drinking Water Quality Standards sets the maximum acceptable concentrations, aesthetic objectives and operational guidelines for various parameters of drinking water such as taste, odour and turbidity, as well as several different minerals, metals and chemicals that can be present through industrial, commercial, and agricultural processes. If contaminants have the potential to fluctuate in a manner that may pose a risk to the health of regular sampling and testing may be required. As always, remember to follow licensed laboratory instructions to ensure proper collection and submission of samples. Operational Checks All owners/operators are required to conduct operational checks of their SDWS at a frequency indicated in their directives, equipment manufacturer guidelines, or as required to maintain the system. Operational checks include but are not limited to: Testing free available chlorine or combined chlorine residual levels Measuring turbidity a measure of the amount of suspended material in water which – can impact disinfection processes Monitoring the status of equipment i.e. UV system status, filter condition, chlorine solution level Conducting well inspections including inspection of the well cover or sanitary seal for cracks and holes; examination of the condition of well vents Ensuring all filters and treatment devices are maintained as per the manufacturer’s directions Where filtration and primary or secondary disinfection is required: Chlorine residual should be tested once every 24 hours or as directed by a PHI Turbidity should be tested at a frequency in accordance with risk level and system configuration Ensure water treatment equipment is: Operated whenever is being supplied
If contaminants are naturally occurring and are not expected to increase, or the test result is limits specified in the Ontario Drinking Water Quality Standards, repeat testing may not be required. The Ontario Drinking Water Quality Standards sets the maximum acceptable concentrations, aesthetic objectives and operational guidelines for various parameters of drinking water such as taste, odour and turbidity, as well as several different minerals, metals and chemicals that can be present through industrial, commercial, and agricultural processes. If contaminants have the potential to fluctuate in a manner that may pose a risk to the health of regular sampling and testing may be required. As always, remember to follow licensed laboratory instructions to ensure proper collection and submission of samples. Operational Checks All owners/operators are required to conduct operational checks of their SDWS at a frequency indicated in their directives, equipment manufacturer guidelines, or as required to maintain the system. Operational checks include but are not limited to: Testing free available chlorine or combined chlorine residual levels Measuring turbidity – a measure of the amount of suspended material in water which can impact disinfection processes Monitoring the status of equipment i.e. UV system status, filter condition, chlorine solution level Conducting well inspections including inspection of the well cover or sanitary seal for cracks and holes; examination of the condition of well vents Ensuring all filters and treatment devices are maintained as per the manufacturer’s directions Where filtration and primary or secondary disinfection is required: Chlorine residual should be tested once every 24 hours or as directed by a PHI Turbidity should be tested at a frequency in accordance with risk level and system configuration Ensure water treatment equipment is: Operated whenever is being supplied
SDWS_Operator_Guide_2018.docx