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Certain proposed projects — based on their nature, size, location, or other factors — must go through an environmental review before any required permits or approvals are issued.

Nitrogen, like phosphorus, is a nutrient that pollutes in state waters, and its concentration in many rivers has been increasing from historic natural levels over time due to human influences.…

Countless bacteria can be found in land, water, humans, and animals. Most bacteria are beneficial, serving as food for larger organisms and playing critical roles in natural processes such as organic…

Answers to questions frequently asked by municipalities about management of contaminated sediments in stormwater collection systems that they own and operate.

Requirements for discharges from a project site and/or management control site(s).

Stakeholders affected by the Minnesota Electronics Recycling Act must be registered with the MPCA.

The MPCA 401 certification fills a unique niche in protecting water quality by applying state water quality standards to projects.