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2. Backflow prevention device - Wikipedia

   en.wikipedia.org/wiki/Backflow_prevention_device

   Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.

3. Air gap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Air_gap_(plumbing)

   This arrangement prevents any contaminants in the sink from entering into the potable water system by siphonage; this is the simplest form of backflow prevention. A common use of the term "air gap" in domestic plumbing refers to a specialized fixture that provides backflow prevention for an installed dishwasher. This "air gap" is visible above ...

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

5. Backwater valve - Wikipedia

   en.wikipedia.org/wiki/Backwater_valve

   Backwater valves commonly activate when a city's sewer lines are unable to handle a large amount of falling precipitation; this puts homes that are tied into the storm lines at risk of having water back flow into them. [citation needed] There is a big difference between backwater valves and backflow preventers: [citation needed]

6. Coppell, Texas - Wikipedia

   en.wikipedia.org/wiki/Coppell,_Texas

   George Coppell. The Coppell area was settled by German and French immigrants in the 1840s. Members of the Peters Colony also settled here in the 1840s. [8] Originally named Gibbs Station, after Barnett Gibbs (one of Texas's first lieutenant governors), the town was renamed in 1892 for George Coppell, a New York banker, who was born in Liverpool, England and probably moved to the United States ...

7. Lead and Copper Rule - Wikipedia

   en.wikipedia.org/wiki/Lead_and_Copper_Rule

   EPA illustration of lead sources in residential buildings Infographic about lead in drinking water. The Lead and Copper Rule (LCR) is a United States federal regulation that limits the concentration of lead and copper allowed in public drinking water at the consumer's tap, as well as limiting the permissible amount of pipe corrosion occurring due to the water itself. [1]