Individual CIOWTS Credential Holders

Please note all those appearing on this list hold an active CIOWTS credential with NEHA. If a credential's expiration date is past due, it is possible the credential holder is working with NEHA to bring the credential up to date. If you have questions with regard to the information posted please contact the NEHA Credentialing Department at 303-756-9090 ext. 310 or email any inquiries to credentialing@neha.org.

Find a CIOWTS Credential Holder in Your Area

City, state or credential holder's name

Corey Engelbrecht

Engelbrecht Brothers Tiling DBA E.F.I.
Davenport, IA
Phone #: (563) 529-1164
Type: Basic
Credential expiration date: 3/31/2019

Christopher Van Hook


Dingmans Ferry, PA
Phone #: (203) 515-4253
Type: Advanced
Credential expiration date: 1/31/2019

James Cassidy

State of Delaware - Dept of Natural Resources
Dover, DE
Phone #: (302) 856-4561
Type: Advanced
Credential expiration date: 2/28/2017

Philip C. Ehlinger, Jr.

Borough of Doylestown
Doylestown, PA
Phone #: (215) 669-1697
Type: Basic
Credential expiration date: 11/30/2018

A Earl Allen

Allen Construction, Inc.
Edgerton, KS
Phone #: (913) 238-6421
Credential expiration date: 2/28/2017

A Earl Allen, Jr.

Allen Construction, Inc.
Edgerton, KS
Phone #: (913) 238-6421
Type: Advanced
Credential expiration date: 2/28/2017

Eugene C. Bassett

E C Bassett Construction Inc
Edgewood, NM
Phone #: (505) 264-5626
Type: Advanced
Credential expiration date: 2/28/2018

Charles J. Maatje

C&M Construction
Egg Harbor City, NJ
Phone #: (609) 517-5580
Type: Advanced
Credential expiration date: 1/31/2019

David H. Booth

Booth Construction
Egg Harbor Township, NJ
Phone #: (609) 432-4170
Type: Advanced
Credential expiration date: 8/31/2017

Thomas Byrd


Egg Harbor Township, NJ
Phone #: (609) 653-6363
Type: Advanced
Credential expiration date: 1/31/2019

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