HWTR Dangerous Materials

My Watershed

Dangerous Waste Derived Fertilizers

The Washington State Department of Agriculture (WSDA) regulates and registers fertilizers. Fertilizers are generally products, not waste. Farms are exempt from reporting under the Community Right to Know provisions, as well.

Fire Codes and Labor and Industry Standards are important with many of these products.

Fertilizer Application Guidelines advises how to keep your fertilizers out of waterways.

Waste-derived Fertilizer Review is required for any fertilizer derived from a waste. This process works to assure that dangerous waste is not applied to fields as fertilizer, preventing overload of metals on land to toxic levels. Laws and Rules regarding this process are here. All fertilizers must be registered through the Washington Departments of Agriculture to be sold and/or used in Washington State.

Wastes in Commercial Fertilizers Database offers information on analyses of waste-derived products by company, product, or waste to detect dangerous metals.

WSDA's Fertilizer Product Database Search for waste-derived and non-waste-derived fertilizers by product name or registrant for the concentrations the nine heavy metals for which Washington State has developed soil-loading standards.

Related information

Metals in Fertilizers at WSDA