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Pierce County’s Sewer Division makes SoundGRO fertilizer from byproducts of the wastewater treatment process, known as “biosolids.” Due to construction activities at the Chambers Creek Regional Wastewater Treatment Plant, direct bag sales were discontinued to protect public safety. Individual bags may be available locally through retail distributors.
SoundGRO® can be used anywhere you would use commercial fertilizer, except for application on established lawns. SoundGRO© is excellent for establishing new lawns or repairing damaged lawn using either seed or sod.
Slow-release prevents initial growth spurts in plants. It also ensures that the fertilizer works over a longer period of time, reducing the number of fertilizer applications required in a year. SoundGRO does not need to be watered in.
Metals like lead and arsenic may pose a risk to human health if concentration levels are too high. The EPA and WSDA have adopted strict content standards for these metals in biosolids fertilizer. SoundGro meets these standards.
Individual 50-lb. bags may be available locally through one of our retail distributors. This list is provided as a courtesy only. Availability is not guaranteed. Please contact individual retailers for supply information.
Individual bags and smaller quantities of SoundGRO may be available through local retail distributors, although availability is not guaranteed. Our current distributor list can be found here. Please contact individual retailers for supply information.