Review: SpringWell Water WS1 & WS4 Whole House Well Water Filter Systems

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SpringWell Water offers 2 whole house well water filter systems, the WS1 and the WS4. They were designed for “economical and environmentally friendly” private well water treatment.

What do they remove? Primarily iron, hydrogen sulfide, and/or manganese for clean, fresh-tasting water free from rotten egg smell that doesn’t stain toilets, sinks, and laundry…

Sounds interesting?

SpringWell WS4

SpringWell WS

Filter Capacity:18-25 Years
Water Flow Rate:12-20 gpm
Annual Cost:Only for Backwashing

Our Rating

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SpringWell Water WS Whole House Well Water Filter Series – Key Features

Most importantly, what are the maximum contaminant levels the WS1 and WS4 can handle?

According to SpringWell,

  • for red-water (ferric) and clear-water (ferrous) iron, it’s up to 7 ppm.
  • for hydrogen sulfide (sulfur), it’s up to 8 ppm.
  • for manganese, the maximum contaminant level is 1 ppm.
  • (Our research has shown that greensand which is the primary filter media used by the WS1/WS4 can also help with arsenic and radium reduction.)

Please note: This is the maximum combined.

There’s no difference between the 2 systems in terms of contaminant removal rates. Where they differ is size and consequently how much filtered water they can provide per minute. The smaller WS1 whole house well water filter has a 12 gpm (gallons per minute) service flow rate enough for 1-4 bathrooms, whereas the WS4 delivers up to 20 gpm for even larger homes.

Min/max required water pressure: 25-80 psi.

Regardless of which version you choose, this is what the water filtration process looks like:

  1. Water enters the system flowing through a pocket of compressed air in the top of the tank (air injection system). The air acts as a catalyst to oxidize iron, manganese and sulfur.
  2. The water mixes with greensand filter media. Any iron, manganese or sulfur that hasn’t oxidized at this point will do so and get trapped in the media bed. The filtered water is now ready at your disposal.
  3. Air pocket reset: The air pocket resets daily to make sure there’s always enough oxygen available.
  4. Backwashing: About once a week, depending on how severe the contamination, the system backwashes to flush all contaminants that have accumulated inside the tank down the drain (safe for septic and sewer system).

In a nutshell, the combination of air injection and greensand filter media is what makes SpringWell’s whole house well water filters so effective. Many other systems rely on air injection OR greensand alone.

That said, your water must have a pH range of 6.5 – 10 for the filtration process to be effective. What’s more, you shouldn’t be using the WS1 or WS4 with water that is microbiologically unsafe without further treatment – think UV water purification. We recommend you reach out to SpringWell for more information on that matter. Tip: They have a live chat feature on their website.

Last but not least, the SpringWell WS is often paired with the SpringWell CF whole house water filter for the removal of chemicals, organics, and a bunch of water-soluble heavy metals.

SpringWell WS Whole House Well Water Filter System Image 1SpringWell WS Whole House Well Water Filter System Image 3SpringWell WS Whole House Well Water Filter System Image 2

WS Series Pros

The automatic backwashing feature and the air pocket reset are controlled by an electronic head. So after the initial programming you can completely forget about the system. There’s no media to replace and no filter to change. Everything is virtually maintenance-free.

Speaking of programming, the Bluetooth function allows you to program, view, and adjust all settings via smartphone or tablet. You can even start a manual backwash cycle if need be – all in the Legacy View app.

As far as installation goes, it’s like hooking up any other whole house water filter, only that a drain connection is required. So if you’re handy around the house you can probably set everything up yourself.

Did we mention the 6-month risk-free satisfaction guarantee and the lifetime warranty on tanks, valves, fittings and filter media? If anything goes wrong SpringWell Water is there to help.

SpringWell WS4

The SpringWell WS – learn more on


Like we said, DIY installation shouldn’t be a problem if you can follow instructions. You don’t have to worry about installing an extra bypass by the way. A bypass valve is part of the package together with an illustrated installation guide.


The Package (Parts)

  • Electronic control head
  • 50′ drain line
  • Bypass valve
  • Hose clamp
  • Well water filter tank
  • MNPT fittings
  • Power supply


According to the company, greensand filter media lasts 18 to 25 years. No maintenance required!


Installation instructions for the SpringWell WS1/WS4:

WS Series Cons

The fittings included are plastic so there’s a chance of cross-threading if you’re not careful. Not really a big deal.

SpringWell Water WS Series Review: Our Verdict + Best for

Neither the SpringWell Water WS1 nor the WS4 whole house well water filters come cheap. But they are worth the price tag. People are very pleased with their results: No more rotten egg smell, no more toilet and shower staining, and improved taste. All things considered, they are our go-to choice and best for well water treatment. Bottom line: 5 stars!

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This completes our SpringWell WS1 and WS4 review. If you have any questions please don’t hesitate to leave a comment below!

About the Author Gene Fitzgerald

Gene Fitzgerald has been with BOS since the very beginning. She is head of content creation and has fully immersed herself into the home water treatment industry only to become an expert herself. Outside of BOS, Gene loves reading books on philosophy & social issues, making music, and hiking.
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