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

Figure 3.17 – Design Risk Drivers

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

There are eight key drivers that contribute to design risk:

• Design-Related Failure to meet the Guidelines;
• Inappropriate Treatment Processes;
• Poor System Reliability;
• No Design Flexibility;
• Exceeding 75 percent of Capacity;
• Inappropriate Waste Management;
• Does Not Meet Applicable Design Standards; and
• Plant/System (Workplace) Considered Dangerous.

• 20 percent of the wastewater systems have a design-related failure to meet guidelines.
• 16 percent of the wastewater systems have inappropriate treatment practices.
• 75 percent of the wastewater systems have poor system reliability.
• 34 percent of the wastewater systems have no design flexibility.
• 49 percent of the wastewater systems exceed 75 percent of their estimated capacities.
• 49 percent of the wastewater systems have inappropriate waste management.
• 6 percent of the wastewater systems do not meet applicable design standards.
• For 1 percent of wastewater systems, the plant/system workplace is considered to be dangerous.

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