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Avatar for Simply PUR Water Filtration
Simply PUR Water Filtration
5.0(
39
)
Water Treatment & Purification System - Install or ReplaceWell Pump - Repair or ServiceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Simply PUR was a pleasure to work with from start to finish. They were personable and provided us with a lot of information and answered all of our questions. The installation process went smooth and they came back to check our water filtration systems and retested my water. They were honest and sincere and most importantly very reliable and professional the whole way through. Its always a pleasure dealing with Simply PUR. I highly recommend using this company and will continue to refer my friends and family to use them."
Pentair Fresh Point 575M
Pentair Fresh Point 575M
Farmingville Home
East Williston Home
East Chester Home

+94

Response time1 day
Response rate89%
33 neighbors recently requested a quote
Avatar for Purified Solutions, LLC
Purified Solutions, LLC
5.0(
14
)
Water Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"Jose and his team were super professional and very knowledgeable. Not to mention honest. Needed my whole house filter changed and ended up adding on a purified water system for drinking. The whole process was seamless. I would definitely recommend them to anyone looking for an honest and reliable company."
Response time9 hrs
Response rate86%
Recommended by92%of homeowners
Avatar for Long lsland Clean Water Service, Inc.
Long lsland Clean Water Service, Inc.
4.6(
67
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"I am now on their maintenance program. I pay a reasonable yearly fee and they come to me like clockwork. I am called a day or two before. They give me a 3 hour time frame and they show up right on time. It takes maybe 5 minutes for them to add the salt fix the timer test the water. The last person that came was Joey who is friendly, courteous and knowledgeable. So are all their other employee. They are great to work with."
Bypass
Whole House Water Filtration System with UV Filter
Reverse Osmosis
Reionator Pro Ultra
Reionator Pro Ultra

+6

Response time2 days
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Santise Plumbing & Heating, LLC
Santise Plumbing & Heating, LLC
5.0(
4
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 2020

Small jobs welcome

Credit card accepted

Licensed and insured Master Plumber with over 10 years of experience in the plumbing industry, we are the experts you need to take care of your home or business. We handle everything from remodels to water heaters. We will treat your home as we would treat our own. Give Santise Plumbing & Heating a call today, we look forward to working with you!

Boiler x-209
Boiler - x-209
1
2
1

+1

Response time4 hrs
Recommended by100%of homeowners
Bonhomme Plumbing and Home Renovations
4.9(
6
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

Bonhomme Plumbing and Home Renovations is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. 25 years of accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time7 hrs
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Heads-Up Irrigation
Heads-Up Irrigation
4.4(
7
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 1988

Free estimates

Credit card accepted

"I’ve been using Heads Up for many years, and they’re simply the best. Their team is always respectful and does a clean, professional job every time. Luke, John, and Lance are true experts and great guys to work with. The office staff is always friendly and helpful on the phone, and I actually look forward to seeing them a couple of times a year for my irrigation service and filter replacements. I’d 100% recommend Heads Up to anyone looking for reliable, top-quality service."
Gate Valve Replacement
Gate Valve Replacement
Gate Valve Replacement
3 neighbors recently requested a quote
1-800-Plumber +Air of Central Long Island
New to Angi
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cold Spring Harbor, NY and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

1800-Plumber +Air is located in Central Long Island, NY and is focused on being the BEST! It’s not about being better than everyone else, instead our focus is on providing you with the fast, dependable plumbing and emergency services when you need it most. Our goal is to give you the BEST experience you have ever received from a service based business.

18 neighbors recently requested a quote
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Water Softeners questions, answered by experts

Water softeners have many benefits. The most important one is converting previously hard water—water with too many minerals—to more usable, easier water. When we say easier water, we mean water that’s easier to digest, less harsh on skin and clothes, and builds up less in the water system. Softer water may lead to lower energy costs and will extend the lifespan of all appliances that use water.

Installing a water softener could help reduce calcium buildup in your pool if your pool has high calcium hardness as a result of hard drinking water in your home. Pool softeners work by exchanging calcium and magnesium for sodium, so if you use softened water to top off your pool, it may help keep calcium hardness from rising over time. However, it won’t lower the calcium hardness of the water already in your pool and isn’t a practical way to control pool calcium levels. The average water softener installation cost is between $200 and $6,000.

Most of the U.S. has hard water, especially across portions of the West and Midwest. The areas with the hardest water include parts of Texas, Oklahoma, Kansas, Colorado, New Mexico, Utah, Wyoming, Illinois, North and South Dakota, Ohio, and New York. You’ll find soft water in parts of New England, the Southeast, the Pacific Northwest, and Hawaii.

A tankless water heater should be at least 10 feet away from a water softener, although the pros you hire for water softener installation can help you determine the correct distance. These two units need to have some distance between them to prevent hot water from the tankless water heater from flowing backward into the water softener when it runs a regeneration cycle.

The primary difference between a water softener and a water filter lies in what they remove from the water. A water softener is designed to remove hard minerals like calcium and magnesium. In contrast, a water filter has a broader effect, removing various contaminants above a certain size, which can include bacteria and other impurities.

To decide which you need, consider your goal. If you want to eliminate hard minerals, choose a softener. If you want to remove a wide range of contaminants, a filter is the better option. Filters are also generally less expensive to install. Depending on your water supply, you may need to install both for comprehensive treatment.

The Cold Spring Harbor, NY homeowners’ guide to water softener services

From average costs to expert advice, get all the answers you need to get your job done.