Our Frequently Asked Questions Page or . . .

Helpful Links to articles about backflow prevention
and the use of backwater valves to prevent flooding 

flood protection"Backwater Valves - Backwater Sewage Protection" by The City of Edmonton, Calgary, Canada.

flood protection "Main Building Drain Protection" by The Ctiy of Welland, Ontario, Canada

FEMA backflow prevention links  "Flood Insurance & Mitigation Activities" by the Federal Emergency Management Agency (FEMA)

FEMA backflow prevention links  "Mainline Backwater Valves" Search for "Mainline Backwater Valves" on google.com

If you discover a broken link to the "outside" sites listed above, or or something that just plain doesn't make sense on this site (www.backwater-valves.com), please click the Contact Us link and fill in the "comments" part of the form to let us know (-:

Backwater Valve with access box

NOTE: The term backflow preventer, and many other associated terms like backflow preventers, backflow prevention, backflow valve and backflow preventors, as well as the two-word versions back flow preventer, back flow preventers, back flow valves and back flow valve technically refer to "fresh water" backflow valves that prevent possibly contaminated drinking water from flowing from a building back into a public water supply.  Many people confuse the terms backwater (back water) and backflow (back flow) when they are seeking the backwater valves that we offer.  It is understandable that people call what we sell a backflow valve, but the technically correct terminology associates backwater valves with sewage and backflow valves with fresh water.