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

Todd Gandler
3 months ago
Responsive, quick, reasonable. Direct line to the owner, who always responds. Refreshing.
Response from the owner:Thank you so much for the great feedback! We truly appreciate you taking the time to share your experience. At Coastal Water Treatment, we take pride in being responsive and easy to reach — it’s wonderful to hear that came through. Thanks again for trusting us with your water needs!
-Laurie, Owner, Coastal Water Treatment
leonard rudin
4 months ago
We were so happy with our installation of our uv light to remove bacteria from our water.. Laurie and Dan the installer were excellent during the whole process. Dan even came out on an emergency call within hours. We had others companies come out and we are happy to be your customer. Thanks Laurie & Dan!
Response from the owner:Thank you so much for your kind words! We’re thrilled to hear you’re happy with your new UV system and water quality. It was a pleasure working with you to make sure your water is clean and safe. We appreciate you choosing Coastal Water Treatment — and we’re always here if you ever need service or have questions down the road!

– Laurie & the Coastal Water Treatment Team
Karen LaCharite
4 months ago
I can’t say enough about what a great job Laurie and her team did. We ended up needing a new well pump along with new water treatment system. Laurie coordinated everything and the process was seamless. Now our water is back to tasting great and the water pressure is normal again. Thank you Coastal Water Treatment!
Response from the owner:Thank you so much for your kind words! We’re thrilled to hear that your new well pump and water treatment system are working perfectly and that your water pressure and taste are back to normal. Our team takes pride in making the process seamless from start to finish — from testing to installation.

We truly appreciate your trust in Coastal Water Treatment and are so glad we could help bring clean, great-tasting water back to your home. If you ever need follow-up service or seasonal maintenance, we’re always here to help!

— Laurie & the Coastal Water Treatment Team
Benjamin Rand
5 months ago
Excellent customer service!!!
Heidi Cresta
9 months ago
Working with Laurie has been an amazing experience from start to finish. Laurie took the time to carefully test and understand the challenges we were having with our new well and designed a system that has made a world of difference. Beyond her expertise and prompt communication, Laurie and her team's professionalism and neatness during the installation were truly appreciated.
If you're looking for someone knowledgeable, responsive and a pleasure to work with, look no further than Laurie at Coastal Water Treatment!
Martha
9 months ago
I have had a great experience with Coastal Water Treatment! Laurie and her team explained everything thoroughly and provided a list of options. They are very responsive and professional. I highly recommend them!

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:
04530, 04530, 04287, 04008, 04548, 04562, 04357, 04086, 04530, 04579, 04535, 04537, 04538, 04551, 04539, 04543, 04342, 04556, 04348, 04852, 04553, 04555, 04348, 04568, 04576, 04572, 04578, 04353, 04578, 04910, 04330, 04917, 04918, 04926, 04927, 04937, 04344, 04345, 04359, 04349, 04350, 04351, 04259, 04352, 04265, 04963, 04346, 04355, 04358, 04989, 04360, 04901, 04284, 04363, 04364, 04003, 04011, 04011, 04053, 04066, 04079

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.