- PO Box 788 Waterville, Maine 04903 (800) 244-8378 (207) 873-7711 Fax: (207) 873-7022 E-Mail: info@nelabservices.com 508 Riverside St Portland, Maine 04103 (207) 878-6481 Answers for a Healthier Environment Apply for credit Located in Central Maine, Northeast Laboratory Services (NEL) is a growing full-service laboratory with over 25 years experience. We take great pride in the high quality of ...www.nelabservices.com