Controlling the risk of water pollution in a construction project involves several key steps, including:

1. Identify potential sources of water pollution: The first step is to identify the potential sources of water pollution in the construction project. This may include erosion and sedimentation from construction activities, runoff from equipment and materials, and accidental spills or leaks.
2. Implement erosion and sediment controls: Erosion and sediment controls, such as silt fences, sediment basins, and erosion control blankets, should be implemented to prevent sediment from entering nearby waterways.
3. Implement stormwater management controls: Stormwater management controls, such as permeable pavement, detention basins, and vegetative swales, should be implemented to manage stormwater runoff and prevent pollutants from entering nearby waterways.
4. Develop a site-specific water management plan: A site-specific water management plan should be developed to outline the strategies and procedures that will be implemented to manage water pollution. The plan should include procedures for stormwater management, erosion and sediment control, and spill prevention and response.
5. Provide training: Workers should be trained on the hazards associated with water pollution, how to properly handle materials to prevent spills, and the safe work procedures that have been developed. Training should be provided to all workers who may be exposed to water pollution hazards.
6. Monitor and review: Regular monitoring and review should be conducted to ensure that the controls that have been put in place are effective in controlling water pollution hazards.
7. Emergency response plan: An emergency response plan should be developed in case of incidents involving water pollution. Workers should be trained on the plan and it should be regularly reviewed and updated as needed.

Overall, controlling the risk of water pollution in a construction project requires a comprehensive approach that includes hazard identification, erosion and sediment controls, storm water management controls, a site-specific water management plan, training, monitoring, and emergency planning.