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Call Today! (207)-350-7145

Transform Your Water with a Reverse Osmosis Drinking Water System…

And Create Delicious, Healthy Water Free of up to 99% of Common Contaminants found in the Mid-Coast Maine water

Coastal Water Treatment offers a variety of installed drinking water systems designed to remove contaminants from the water your family drinks. Installed drinking water systems can be tucked away under the kitchen counter or in the basement.

The perfect complement to a Coastal Water Treatment water refiner or water softener for the water-conscious family is a Coastal Water Treatment reverse osmosis drinking water system. Our exclusive line of reverse osmosis water purifier systems are specifically designed to provide cleaner, clearer, better-tasting drinking water by removing more than 95% of dissolved solids including many harmful contaminants. Now you can have bottle-quality water at your tap.

Transform Your Water with a Reverse Osmosis Drinking Water System…

And Create Delicious, Healthy Water Free of up to 99% of Common Contaminants found in the Mid-Coast Maine water

Coastal Water Treatment offers a variety of installed drinking water systems designed to remove contaminants from the water your family drinks. Installed drinking water systems can be tucked away under the kitchen counter or in the basement.

The perfect complement to a Coastal Water Treatment water refiner or water softener for the water-conscious family is a Coastal Water Treatment reverse osmosis drinking water system. Our exclusive line of reverse osmosis water purifier systems are specifically designed to provide cleaner, clearer, better-tasting drinking water by removing more than 95% of dissolved solids including many harmful contaminants. Now you can have bottle-quality water at your tap.

With A Coastal Water Treatment Reverse Osmosis System You Get:

  • Semi-permeable membranes to reject solids
  • Three or four-stage water filtration
  • Specially formulated pre-and post-filters to reduce contaminants, eliminate odors, and improve taste.
  • Automatic shut-off to conserve water
  • Optional electronic monitor to alert you when filters need changing
  • Space-saving designs

Here’s How Reverse Osmosis Works:

  1. Household water is directed through a pre-filter for filtration to remove sediment, chlorine taste and odor, and particulate matter.
  2. The water is then forced, by pressure, through a semi-permeable membrane where a high percentage of the dissolved solids and other contaminants are rejected and flushed to the drain.
  3. Final polishing of the water is accomplished by an activated carbon absorption block filter removing tastes and odors. The water passes through this final filtering process immediately before going to the faucet whether it comes directly from the unit or from the storage tank.
  4. The automatic shut-off control shuts down the system when the storage tank is filled and water is not being drawn. This “demand production” feature conserves water by eliminating the constant running to the drain found in some units. The control also depressurizes the membrane when not in service extending the membrane life and reducing the need for maintenance of your reverse osmosis water purifier.

Coastal Water Treatment offers a broad range of reverse osmosis purification systems, a state-of-the-art reverse osmosis filter. These products reduce substances such as chlorine taste, sediment, nitrates, lead, cysts, and detergents.

Fill out the form below or call (207)-350-7145 for more information & a free quote!

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Verified Local Reviews

Coastal Water Treatment
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Coastal Water Treatment
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Ellie P
Ellie P
I am a new customer with Coastal Water Treatment. I am very happy with the service, products and professionalism of Laurie & her team. She listened to my issues, made a quick appt. to come out, got water tested, & a new Ph & water softening system installed.She came back for retesting a few weeks later. I feel in very good hands with this company! Thank you, Laurie!
Joe Pane
Joe Pane
After moving into our home in Maine we discovered coliform bacteria issues with our well water. I reached out to one of the bigger water treatment companies to shock our well. After they shocked our well they let me down and tried to oversell me on expensive systems I knew I didn't need. Out of frustration with the big name company and the continued expense of having to constantly purchase bottled water I reached out to Coastal Water Treatment by email one evening for a second opinion. To my surprise the very next morning I had a reply by email from Laurie and she called me shortly thereafter to setup a time to meet and discuss my needs. It is very rare these days to find a company that responds so quickly and so professionally. I was super impressed when Laurie arrived at my home and introduced herself and I found out she was the owner of the company. I shared my concerns about the undrinkable water due to coliform bacteria , stains in toilets from high manganese, calcium and iron content and the hardness of the water. Laurie made me me feel like a family member and assured me she only wanted to address and solve the water issues that I was dealing with. WOW NO MONEY GRAB HERE! Someone who actually cares about my issues and wants to put together a proposal to fit those specific needs. She emailed me a proposal the same day and we setup a time and date to install a water softener system, sediment filter and an under sink reverse osmosis water system for drinking water. On the day of installation she was right there alongside her plumber Dan to make sure everything went smoothly. Dan did an outstanding job installing all the systems. Laurie explained everything to me about what I could expect from the new systems and also gave me an extra sediment filter for the future filter change and 2 extra bags of salt. Since our install Laurie came back and tested our water and the results were amazing. The calcium, hardness, iron and manganese are now filtered out. The Coliform bacteria is completely absent. My wife and I are 100% satisfied with our new water treatment systems. Our drinking water is delicious, no more stains in toilets and my wife loves how the water softener makes her hair look and feel. Coastal Water Treatment is a David among Goliath Water Treatment companies that provides exceptional customer communication and value. Do yourself a favor skip the big name companies and give Coastal Water Treatment a try if you want value and customer service that exceeds all your expectations.
Emaly Hunt
Emaly Hunt
Quick, quality service with professionals who really knows what they are doing! Appreciate when a vendor says don't fix what isn't broken yet instead of trying to upsell a full system. Informative and allowed us to ask questions and walked up through the process. Finished on time, on budget and the work is immaculate!
Nellie Doane
Nellie Doane
Mrs. Laurie was very friendly and nice she knows her work very well thank you for helping me
Haley Hegarty
Haley Hegarty
The crew was on time and professional. They installed a new water softener for us in just a few hours. I had nothing to clean up which says a lot in my book. Any questions I had were answered clearly and concisely, and I could tell that they enjoyed their work. I highly recommend Coastal Water Treatment.
J Rudin
J Rudin
Prompt , professional , competent. Highly recommend!
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Local Info

Wiscasset ME Reverse Osmosis Water Filter

Get a Reverse Osmosis Water Filter for your Wiscasset ME home

Coastal Water Treatment was founded in as a water treatment company offering reverse osmosis water filters and the best commercial and residential water treatment products for decades in the Wiscasset area. We’ll give you a free water analysis and figure out the ideal water treatment system for your business. We carry commercial water softeners, filters, and RO systems from Entipur, and have everything from high quality affordable options to the highest tech items that can connect via wifi. Give us a call for a free consultation today.

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681 Bath Rd Wiscasset ME 04578
Phone Number: (207)-350-7145
Hours: 9am - 5pm M-F

About Wiscasset ME:

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Counties in/near Wiscasset:
Lincoln County, Sagadahoc County, Kennebec County & Cumberland County

Cities in/near Wiscasset:
Boothbay, Southport, Bristol, Damariscotta & Wiscasset

Zip Codes in/near Wiscasset:
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Neighborhoods in/near Wiscasset:

Frequently Asked Reverse Osmosis Questions:

What is reverse osmosis?

Reverse Osmosis (RO) is a water purification process that uses a partially permeable membrane to remove unwanted molecules and particles from drinking water.

What does reverse osmosis remove?

Reverse Osmosis removes common chemical contaminants such as:

  • sodium
  • chloride
  • copper
  • chromium
  • lead

Some systems may also reduce:

  • arsenic
  • fluoride
  • radium
  • sulfate
  • calcium
  • magnesium
  • potassium
  • nitrate
  • phosphorous

How much is reverse osmosis system?

A Reverse Osmosis System cost depends on the type of system you’re looking to purchase. Under sink reverse osmosis systems range from $250 to $7,500. Whole house reverse osmosis systems range from $1,000 – $18,000. System costs depend on a number of factors but are most closely tied to the amount of water that needs to be filtered per day.

How to remineralize water after reverse osmosis?

You can remineralize water after reverse osmosis filtering through various methods. Most modern reverse osmosis systems include a remineralization tank that takes care of adding minerals back into your water for you.

How to make reverse osmosis water alkaline?

You can make reverse osmosis water alkaline by adding alkaline minerals and raising the ph of your filtered water.

What is not removed by reverse osmosis?

What is not removed by reverse osmosis may surprise some. While RO filters will reduce a wide range of contaminants from your water, it will not remove some pesticides, solvents, volatile organic chemicals VOCs (like chlorine and radon), dissolved gases (ammonia, carbon dioxide, oxygen, hydrogen sulfide), and organic contaminants (such as formaldehyde, methanol, acetonitrile, methyl ethyl ketone, etc.).

How much water does reverse osmosis waste?

Reverse osmosis wastes on average about 4 gallons of water per gallon made. If you use 3 gallons a day for drinking, cooking and internal consumption, that means you will waste about 12 gallons, making a reverse osmosis system about 25% efficient. Comparatively, a washing machine and dishwasher use electricity and hot water (which takes energy to heat) and waste every gallon of water they use.