Dewatering Management Plan (DMP) Services
Dewatering is a critical component of many construction, mining, and infrastructure projects, but it can pose significant risks to groundwater resources, surface water quality, and surrounding ecosystems if not managed properly. In Ontario, dewatering activities are regulated under the Ontario Water Resources Act (OWRA) and require a Dewatering Management Plan (DMP) to ensure compliance and minimize environmental impacts.
At Blastek, we specialize in developing comprehensive and customized DMPs tailored to clients’ needs. Our plans ensure that dewatering activities are conducted safely, efficiently, and in compliance with provincial regulations.
Our Services
We provide end-to-end support for dewatering management, including:
1. DMP Development
- Conducting site assessments to evaluate groundwater conditions, soil characteristics, and potential impacts of dewatering.
- Designing customized DMPs that outline dewatering methods, discharge strategies, and environmental protection measures.
- Incorporating best management practices (BMPs) to minimize risks to groundwater and surface water resources.
2. Regulatory Compliance
- Ensuring DMPs meet the requirements of Ontario’s OWRA, Environmental Protection Act (EPA), and other applicable regulations.
- Assisting with the preparation and submission of Permits to Take Water (PTTW) or other regulatory approvals.
3. Groundwater and Surface Water Monitoring
- Establishing monitoring programs to track groundwater levels, flow rates, and water quality during dewatering activities.
- Assessing potential impacts on nearby water bodies, wells, and ecosystems.
4. Discharge Management
- Designing strategies for the safe discharge of dewatering effluent, including treatment options if required.
- Ensuring compliance with water quality standards and discharge regulations.
5. Impact Mitigation
- Developing measures to mitigate impacts on groundwater resources, surface water bodies, and aquatic ecosystems.
- Implementing erosion and sediment control measures to protect water quality.
6. Risk Assessment and Management
- Identifying potential risks associated with dewatering, such as subsidence, groundwater depletion, or contamination.
- Providing recommendations to manage risks and ensure the long-term sustainability of water resources.
7. Stakeholder Engagement
- Facilitating consultations with regulatory authorities, Indigenous communities, and local stakeholders.
- Addressing specific concerns and incorporating feedback into each DMP.

Why Choose Blastek?
Expertise:
Our team includes hydrogeologists, water resource engineers, and environmental specialists with extensive experience in dewatering management.
Customized Solutions:
We tailor our DMPs to meet the specific needs of each project, site conditions, and regulatory requirements.
Regulatory Knowledge:
We stay up-to-date with Ontario’s water management regulations to ensure your project remains compliant.
Sustainability Focus:
We prioritize the protection of water resources and ecosystems in all our services.
Proven Track Record:
Our DMPs have been trusted by construction firms, mining companies, and infrastructure developers across Ontario.
When Do You Need a Dewatering Management Plan?
A DMP is essential for:
- Construction projects involving deep excavations or below-grade structures.
- Mining operations requiring groundwater control.
- Infrastructure projects such as tunnels, pipelines, or foundations.
- Regulatory compliance for dewatering activities under the OWRA.