National Assessment of First Nations Water and Wastewater Systems - Saskatchewan Regional Roll-Up Report

Figure 3.8 – Design Risk Drivers

This graph identifies the frequency of the main drivers that contribute to the design risk for water systems in First Nations communities in Saskatchewan.

There are eight key risk drivers:

• Failure to Meet Bacteriologial MAC (Maximum Allowable Concentration) due to Design;
• Disinfection System Not in Place;
• Failure to Meet GCDWQ (Guidelines for Canadian Drinking Water Quality) due to Design;
• Inappropriate Treatment Processes;
• Poor System Reliability;
• No Design Flexibility;
• Exceeds 75 percent Capacity; and
• Inappropriate Waste Management.

The risk drivers are in red and green. The risk drivers in red result in the entire water system being given a high-risk score, regardless of all the other component scores. Failure to Meet Bacteriological MAC (Maximum Allowable Concentration) due to Design is the only risk driver in red. The rest of the risk drivers are in green.

• 4 percent of the water systems failed to meet the bacteriological MAC (Maximum Allowable Concentration) due to design. As a result, these systems were given a high-risk score, regardless of all the other component scores.
• There is no disinfection system in place for 4 percent of the water systems.
• 49 percent of the water systems failed to meet the GCDWQ (Guidelines for Canadian Drinking Water Quality) due to design.
• 32 percent of the water systems have inappropriate treatment processes.
• 34 percent of the water systems have poor system reliability.
• 47 percent of the water systems have no design flexibility.
• 69 percent of the water systems exceed 75 percent capacity.
• 20 percent of the water systems practice inappropriate waste management.

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