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

Sandford S. Mersky

Septic Management Associates LLC & South Jersey Engineers LLC
Voorhees, New Jersey
Phone #: (856) 651-9051
Type: Advanced
Credential expiration date: 3/31/2019

Anthony Milazzo

Milazzo Contracting
Wantage, New Jersey
Phone #: (973) 919-2983
Type: Advanced
Credential expiration date: 5/31/2019

Brian W. Dunn

Dirtworx Excavating LLC
Wantage, New Jersey
Phone #: (973) 948-7228
Type: Advanced
Credential expiration date: 7/31/2019

William D. Dunn

Dirtworx Excavating LLC
Wantage, New Jersey
Phone #: (973) 948-7228
Type: Advanced
Credential expiration date: 7/31/2019

Brian W Dunn

Dirtworx Excavating LLC
Wantage, NJ
Phone #: (973) 948-0333
Type: Advanced
Credential expiration date: 7/31/2019

William David Dunn

Dirtworx Excavating LLC
Wantage, NJ
Phone #: (973) 296-2968
Type: Advanced
Credential expiration date: 7/31/2019

Michael Harm


Wantage, New Jersey
Phone #: (201) 919-7456
Type: Advanced
Credential expiration date: 5/31/2019

Jacob Schipper

JCS Excavating
Wantage, New Jersey
Phone #: (973) 445-5875
Type: Advanced
Credential expiration date: 1/31/2019

Richard Vreeland

Vreeland Enterprises LLC
Warwick, New York
Phone #: (845) 986-4316
Type: Advanced
Credential expiration date: 5/31/2019

Robert Rhinehart

Rhinehart Excavating
Washington, New Jersey
Phone #: (908) 339-2744
Type: Advanced
Credential expiration date: 6/30/2018

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