Tidewater Environmental Services, Inc. (TESI), a Middlesex Water subsidiary, provides wastewater services to approximately 2,400 residential retail customers in Kent and Sussex Counties in Delaware. TESI was established in 2004 after the passage of Senate Bill 99 which added wastewater utilities to those regulated by the Delaware Public Service Commission (PSC). Under the legislation, wastewater utilities are required to obtain Certificates of Public Convenience and Necessity (CPCNs) from the PSC to serve customers. The PSC also regulates wastewater utility rates in DE.
TESI has been operating wastewater treatment systems in Sussex County, DE since 2005 and continues to add and operate new facilities. The Company works closely with area developers and continues to build its wastewater franchise area to serve customer needs.
To have your property included in our next CPCN application, please download and sign the petition included here and return it to us by fax at (302) 734-9297. If you have any questions about the CPCN process, email [email protected].
Customer Service Contact Information:
In the event of an emergency, please call:
For billing inquiries: (877) 720-9272
Tidewater Environmental Services, Inc.
1100 South Little Creek Road
Dover, DE 19901
Customer Service Correspondence
Middlesex Water Company
1500 Ronson Road
Iselin, NJ 08830
Attn: Tidewater Environmental Services
Email: [email protected]