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Professional Training Association is a non-profit organization that was created to support rural development and communities. Our focus is on supporting small to mid-sized utilities. We specialize in career building training for professionals by professionals.

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  • About us
    • Who We Are
    • Vision Statement
    • Mission Statement
    • Values Statement
    • Board Members & Officers
    • Contact us / sign up for workshop notifications
  • Training
    • About our classes
    • All Training In-Person
    • ALL LIVE ONLINE TRAINING
    • Upcoming Workshops
      • Upcoming Events – Searchable Calendar Format
      • Upcoming Events – List Format
      • Printable Workshop Schedule
  • Other Services
    • Custom Training
    • Technical Assistance
  • Links
    • WA Operator Certification Information
    • WA Department of Ecology
    • WA Department of Health – Drinking Water
    • Washington Administrative Code (WAC)
    • Accredited Laboratories
    • Additional Useful Links
  • Employment
    • Join PTA – Become an instructor
    • Job Postings

WA Department of Ecology

  • WA Department of Ecology

  • Wastewater Treatment Operator Certification Program

    • Information Manual for Treatment Plant Operators
    • Accesss your SecureAccess Washington Account to look up your certification information
  • Laboratory Accreditation Program

    • Procedure Manual for the Environmental Laboratory Accreditation Program
    • Model of a Quality Assurance Manual for a Small Wastewater Treatment Plant Laboratory
    • Bench Sheets and Control Charts for Laboratories
    • Accredited Laboratories in WA
  • Water Quality Permits

    • Water Quality Permit Writer’s Manual
  • Biosolids

    • Application for Coverage under the General Permit
  • Pretreatment

    • Water Quality Permit Writer’s Manual – ChapterXx: Pretreatment
    • Guidance Manual for Performing Industrial Users Surveys
    • Guidance Manual for Developing Local Discharge Limits
  • Water Quality Permit Database – PARIS

  • WQ Web Portal Guidance

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Event Calendar
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