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Backflow Prevention

Backflow Prevention is necessary when there is a connection to a public water system from another water source containing non-potable water, such as sewer, wastewater, pools, irrigation systems, etc. A Backflow Preventor is installed to keep the non-potable water from contaminating the public water system.

What causes backflow?
Backflow occurs when the fresh water (potable) side has lost water pressure. This can draw contaminated water through the cross connector. Yuck, right? A drop in pressure in the fresh water supply may happen due to use of irrigation systems, municipal plumbing accidents, or even municipal demand on the water supply. Backflow also happens when there is pressure build up on the waste water side, which will force the contaminated water through the cross connector to the fresh water side. A Backflow Prevention system will stop this cross contamination and keep your home's water supply sanitary.

Hartwell Plumbing and Heating is certified in backflow prevention (New England Water Works Association) and can install backflow preventers and cross connection control systems for both residential and commercial systems.

Winter Preparation


Shut off and drain any outside faucets including lawn sprinkling systems.
Hartwell Plumbing and Heating
2017-01-11T13:30:52-05:00

Shut off and drain any outside faucets including lawn sprinkling systems.

To prevent freezing of water in your faucets…

To prevent freezing of water in your faucets, run your water from every valve in your house at regular intervals throughout the winter.
Hartwell Plumbing and Heating
2017-01-11T12:50:07-05:00

To prevent freezing of water in your faucets, run your water from every valve in your house at regular intervals throughout the winter.

Prevent Clogged Drains

Run hot water down the drain after each use. This helps to prevent oils and food from building up in the pipes.
Hartwell Plumbing and Heating
2017-01-11T13:23:17-05:00

Run hot water down the drain after each use. This helps to prevent oils and food from building up in the pipes.

To Prevent Freezing Pipes

Allow heat to circulate through every room of the house.  Leave cabinet doors under faucets ajar to allow heat near the pipes.
Hartwell Plumbing and Heating
2017-01-11T13:29:01-05:00

Allow heat to circulate through every room of the house.  Leave cabinet doors under faucets ajar to allow heat near the pipes.

Prevent Clogged Drains

Do not pour cooking grease or baking fat down the drain.  Dispose of it in an old coffee can or milk container.
Hartwell Plumbing and Heating
2017-01-11T13:21:45-05:00

Do not pour cooking grease or baking fat down the drain.  Dispose of it in an old coffee can or milk container.

Prevent Clogged Drains

Put 1 cup of baking soda or vinegar down the drain and let sit for 30 minutes, then rinse down with very hot water.
Hartwell Plumbing and Heating
2017-01-11T13:23:45-05:00

Put 1 cup of baking soda or vinegar down the drain and let sit for 30 minutes, then rinse down with very hot water.

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Hartwell Plumbing and Heating