OCSD's Biosolids Program strives to provide our interested parties (our ratepayers, biosolids site neighbors, regulators, sister agencies, consultants, and contractors) with relevant and digestible information that meets their needs.

Below is information currently available on our website to help you find what you are looking for. Please contact us if you have any other suggestions.


More details

  • OCSD's Biosolids Contractor Requirements – a comprehensive document that describe all aspects and expectations of our biosolids contractors, who haul our biosolids offsite for recycling (farming and composting). 

  • Annual Compliance Report - A thorough and detailed review of how we complied with EPA and Arizona Department of Environmental Quality requirements, along with progress on performance of goals, and other requirements of our management system.  

  • Regulatory Data - Monthly “Notice and Necessary Information” (NANIs) are posted here. NANIs certify that OCSD’s biosolids are meeting appropriate metals, pathogen reduction, vector-attraction reduction requirements in compliance with EPA and Arizona Department of Environmental Quality requirements in order for our biosolids to benefit farmland in Arizona.


Contact us

Deirdre Bingman
dbingman@ocsd.com or 714.593.7459
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