David H. Paul, Inc.

David H. Paul, Inc. (DHP)


Since 1988 David H. Paul, Inc. (DHP) has been the world's leader in membrane water treatment training and water treatment consulting.


Our expertise includes:


  • microfiltration (MF)
  • ultrafiltration (UF)
  • nanofiltration (NF) & reverse osmosis (RO)
  • high purity water treatment (HPWT)
    • ion exchange (IX)
    • electrodeionization (EDI)
  • many others.



4 Levels of RO Certification


DHP has more experience in water treatment training and consulting in the reverse osmosis (RO) field than any other company in the world.  DHP has trained tens of thousands of water treatment professionals at hundreds of facilities, including brackish water, seawater and wastewater treatment plants.


DHP provides the following water treatment training.




Objective verification

of knowledge and proficiency;

personally and as an employer



- Level 1: RO Specialist I

- Level 2: RO Specialist II

- Level 3: RO Specialist III

- Level 4: RO Specialist IV

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Online training for Texas Commission on Environmental Quality (TCEQ)
license RO training!


Recently David H. Paul, Inc. has been approved for its online training course
(#1384) OLC117: Reverse Osmosis Operation and Maintenance - $319.00
Approved for Water Licensing (WATEROL)


If you would like to get started,
please go to our website at www.wttionline.org and create your
FREE online account (if you do not have one already)


Once registered, log in to the course and click the "TCEQ Approved Training link" and then click the "TCEQ Required RO Training" link and you will find the course available for purchase.


If you have any questions please feel free to contact Darrell Cunningham at
1-877-711-4347 or dcunningham@dhptraining.com


Thank you

Need Help? Use our contact form or Call 1-877-711-4347

Interested in TCEQs Click Here!

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This website copyright 2015 by David H. Paul, Inc.
Physical Address: 1911 Rustic Place, Farmington, NM 87401 USA | Mailing Address: PO Box 2590, Farmington NM, 87499 USA | Phone: 1-877-711-4347 | Fax: 505-327-2934
Email: dhp@dhptraining.com