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Why Choose OTCO

Information about Organic Certification Services and Qualifications

Why Choose Oregon Tilth Certification Services

bowl of apples

Oregon Tilth Certified Organic (OTCO) has fully integrated organic certification services with a high level of service and commitment. 

OTCO has been offering organic certification services to the industry for over 30 years.  Helping to develop the National Organic Standards of the USDA, Oregon Tilth was one of the first to gain accreditation and begin offering organic certification under the USDA organic regulations.  Oregon Tilth offers certification services to producers, manufacturers, food handlers and more, both nationally and internationally.  Oregon Tilth is the most respected name in organic certification.

OTCO Certification Services


  • OTCO certifies multiple categories of operations, including individual operations, production partnerships, and cooperatives.
  • OTCO provides certification services for ten classes of operations: T, O, OW, OLP, OA, OP, OH, OM, OFT and OR (more...)
  • OTCO's diverse portfolio and expertise is designed for certification services from farms, distributors, manufacturers to retailers and restaurants.
  • OTCO provides national and international certification services.
  • OTCO is compliant with ISO Guide 65 through the USDA and is accredited by the USDA National Organic Program (more...)
  • OTCO enforces the federal Organic Foods Production Act by investigating all reports of violations of the USDA National Organic Program standards.
  • OTCO offers fast track Salmon-Safe certification to organic farmers that further protect water quality and biodiversity.

Categories of Certification

Certification is available for individual operations, production partnerships, and cooperatives or grower groups.

  • An individual operation is a sole proprietorship, corporation, partnership or similarly defined single company. A single certification may cover activities at multiple sites under the direct management of the applicant company.

  • A production partnership involves a collaborative effort among two or more independent companies marketing their products in common. A single production partnership certification may cover diverse activities at diverse sites.

  • A coopertive or grower group involves a centrally managed association of local growers producing similar crops using similar practices and marketing their products in common. A single cooperative may cover numerous individual member farmers.
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