Welcome to 1A Backflow & Services

What We Do

Cross Connection Control, Backflow Inspections and Certifications – Residential and Commercial Property.

  • Annual Testing & Inspection
  • Service Documentation Filing
  • Device Tagging (if applicable)
  • Compliance Review and Assessment


Billy Dominguez, Owner

Office: 305 234 6329
Fax: 305 234 5249

Email: BackFlow@BellSouth.net

To help keep our public water clean it must be isolated from undesirable reversal of water flow or mixtures of water with liquids, gases or toxic health hazard substances into the distribution of the potable water system. Backflow Prevention assemblies provide that protection and must be tested a least annually.

1A Backflow & Services offers this service to all in need, catering to property management groups, plumbing companies, contractors, residential owner’s etc…. We provide this service throughout the State of Florida and are based throughout Dade, Broward and Palm Beach Counties.

Billy Dominguez, Owner

Testing and inspection of backflow preventers is our specialty. We have become one of the most recognized and respected backflow assembly testing companies in our profession today. We have achieved this status through our high standards of service and have established a very strong reputable profile in our industry today since established in 1997.

Please contact us for your next inspection or service call, together we can make a difference in keeping our public water clean.

Service Area

The Facts

It is now required by law through the State of Florida Sec 312.9 that all backflow prevention devices be tested at least annually. Failure to comply places you and everyone else at risk. Please help keep our water clean and pure.

1A Backflow & Services are true professionals! We use them to service all of the properties that we own. Always prompt, efficient and cost effective. Definitely the best service around.

Marie, Property Owner

1 A Backflow & Services is always reliable and I know the work will be done right. Have worked with Billy Dominguez for many years. Prior to working with Billy, I had some bad experiences with other companies. Since Billy has been doing our inspections he has great prices, and we have had nothing but excellent service !

Manuel, General Manager, N.Y.G. Supplies

I HIGHLY recommend Billy and 1A Backflow for all future customers. They will never leave you disappointed and will always give you the best service around. Read more…

Julie Wisniewski, Backflow Manager, MARTINEX INTERNATIONAL

Excellent company. Very knowledgeable experienced and professional. I would highly recommend them to anyone that are in need of their services.

George, General Manager, Speedy G - Miami, FL

On behalf of MP Property Management, Inc., we want to thank Backflow Certifications and Billy Dominguez for their continued level of service and professionalism. Over the past several years, Backflow Certifications has demonstrated expedience in each and every service they have provided to the different commercial and residential communities that we manage. Read more…


Over the past three years, Billy Dominguez has handled all the backflow inspections and repairs for the various seventeen associations located on Fisher Island.

His work and ideas have always exhibited excellent taste and concern for the requirements of the Developer and the Condominium Associations. Read more…

Jerry Bleiweiss, District Manager, First Service Residential (formerly The Continental Group)