ADA Water Department Customer Service Numbers Home» ADA» ADA Water Department Water Department: +1 (419) 634-4045 Emergency Service Number: 911 Non-Emergency Service Request: +1 (419) 634-0010 Option 1Administration: +1 (419) 634-0010 Option 2Office Address: 115 W Buckeye Ave, Ada, OH 45810, United StatesEmail Your Inquiries At: admin@adapd.orgTiming: Monday to Friday 8 AM to 4:30 PM, Saturday and Sunday Closed.How To Contact Ada Water Department Via Message?Contact us: You can write a text message to Ada Water Department for any issue through the contact us page of www.adaoh.org/. EnquiryService Support: You can avail service support from Ada Water Department by following the given path.We Are Here to Serve YouWe're glad you're here and hope this website will provide you with useful information that you can use.We take great pride in the service we provide to our customers.Problem Solution Problem Solution: Ada Water Department has provided answer to all possible quires on their web portal that covers common issues & problems, instructions, guidance, etc.How/Where To Pay Bill For Ada Water Department Bill Payment: You can pay your bill to Ada Water Department with the facility provided.Our new website provides you with the opportunity and convenience of paying your bill online.