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

David Addam Brouillette

BCI Septic
Cottonwood, CA
Phone #: (530) 526-0462
Type: Advanced
Credential expiration date: 2/29/2016

Corey Engelbrecht

Engelbrecht Brothers Tiling DBA E.F.I.
Davenport, Iowa
Phone #: (563) 285-4244
Type: Basic
Credential expiration date: 3/31/2019

Curt L. Coghlan

Polk County Public Works
Des Moines, Iowa
Phone #: (515) 865-5531
Type: Basic
Credential expiration date: 1/31/2019

Christopher Van Hook


Dingmans Ferry, Pennsylvania
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

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

Philip C. Ehlinger, Jr.

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

Eugene C. Bassett

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

Charles J. Maatje

C&M Construction
Egg Harbor City, New Jersey
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

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