The WS1 is Springwell's well water iron, manganese, and sulfur filter — and it's also called the WF1
The WS1 and WF1 designations refer to the same physical product. The model code printed on the unit is WS1; Springwell's URLs and older marketing reference WF1. Both are the same air injection oxidation system that removes iron up to 7 PPM, hydrogen sulfide up to 8 PPM, and manganese up to 1 PPM with no chemicals or salt. This page focuses on the actual buying decision — what to expect, what to budget, and what add-ons make sense.
Why most well owners end up here
If you're reading this you've probably already done the diagnosis. The water test came back showing iron above 0.3 PPM, or you've been smelling rotten eggs at the cold water tap, or the toilet bowl rim has gone orange. Maybe all three. The Springwell WS1 is one of three or four systems that comes up in every "how do I fix this" search, and you're trying to figure out whether it's the right one before spending $1,300 to $2,500.
The short answer is yes for most well owners with iron, sulfur, or manganese problems below the system's stated thresholds. The longer answer involves a few decisions that aren't obvious from Springwell's product page — bathroom-count sizing, the UV add-on choice, whether you also need a softener, and what your water test actually has to show before you buy.
Pricing by bathroom count
Springwell sizes the WS1 by bathroom count rather than household size or square footage, because what actually matters is peak simultaneous flow demand. Two bathrooms running at once need different flow than four. Pricing scales with the size of the tank and the rated flow rate.
| Configuration | Flow rate | Approximate base price |
|---|---|---|
| 1-4 bathrooms (WS1) | 12 GPM | ~$1,300+ |
| 4-6 bathrooms (WS4) | 20 GPM | ~$1,800+ |
| 7+ bathrooms (WS+) | 25+ GPM | ~$2,200+ |
Springwell runs promotions of 5-10% off on a near-rolling basis, so the actual price you see at checkout will usually be below the list. The lifetime warranty on tanks and valves and the six-month money-back guarantee both apply at every size — there's no premium tier upsell built into the larger configurations beyond the bigger tank itself.
The UV add-on decision
Springwell's checkout flow offers a UV sterilization upgrade for approximately $1,065 on top of the base WS1 price. This is a real decision, not an obvious upsell — and the answer depends on one specific data point from your water test.
Add UV only if your test showed coliform bacteria — otherwise skip it
UV sterilization kills bacteria, viruses, and waterborne pathogens that the WS1 alone doesn't address. If your well water tested positive for total coliform or E. coli, you need UV. If your test came back clean for biological contamination, the UV add-on is unnecessary spend — about $1,065 you'd be paying to disinfect water that doesn't need disinfection.
If you didn't test for coliform before buying, do that first. A basic well water test from a certified lab runs $50-150 and gives you the data you actually need to make these add-on decisions. Buying the UV add-on "just in case" without a positive coliform result is the most common over-spend on this product.
What's in the box and what isn't
The shipped system includes the main filter tank with pre-loaded media, the digital control head, the bypass valve, and the installation kit with hoses, fittings, and a drain line. Springwell's documentation walks through standard install — most plumbers handle the job in 3-4 hours, and a handy DIY homeowner with copper or PEX experience can do it in a weekend.
What's not included that you may need to buy separately:
- A pre-sediment filter if your well produces visible sand or grit (commonly an extra $50-100 for a spin-down filter)
- A pressure tank (most well systems already have one — check before assuming)
- An electrical outlet within reach of the install location for the control head
- A drain line tied to your home's wastewater (gravity-fed laundry standpipe or floor drain works)
- A water softener if your hardness exceeds 7 GPG — separate purchase, install after the WS1
The pre-purchase water test checklist
Before clicking buy on any iron filter — the WS1, an Aquasana Rhino, or anything else — your water test should answer five specific questions. Buying without these numbers is how people end up with the wrong system or unnecessary add-ons.
| Test parameter | Why it matters for the WS1 |
|---|---|
| Iron (PPM) | WS1 handles up to 7 PPM. Above that, you need pre-treatment or a different system. |
| Hydrogen sulfide (PPM) | WS1 handles up to 8 PPM. Above 8, peroxide injection is the right call instead. |
| Manganese (PPM) | WS1 handles up to 1 PPM. Often appears alongside iron. |
| Hardness (GPG) | Above 7 GPG means you also need a softener installed after the WS1. |
| Coliform / E. coli | Positive result means you need the UV add-on. Negative means skip it. |
For the full guidance on diagnosing well water issues before buying treatment, see our sulfur smell diagnosis guide and iron filter buying guide.
Real-world performance — what to expect after install
For a properly-sized install on water within the WS1's stated thresholds, the iron and sulfur problems disappear within 1-2 weeks. Existing orange staining in toilet bowls and on fixtures takes a CLR or vinegar treatment to remove — the filter prevents new staining but doesn't strip what's already there. The sulfur smell goes within the first day of operation as the new water flushes the existing plumbing.
The system is set-and-forget after the initial programming. The control head runs an automatic backwash on a daily schedule (usually 2 AM) that takes 8-12 minutes and uses about 20 gallons. Media life is rated for 1 million gallons, which translates to roughly 8-12 years for an average household — at which point the bed gets replaced rather than the entire system.
The most common operational complaint is the backwash schedule conflicting with night-time water use. If your household has a teenager who showers at midnight, schedule the backwash for 3 AM instead. The control head supports custom timing.
Final buying checklist
Before completing the purchase, walk through this list. If you can answer all six confidently, the WS1 is almost certainly the right system for your well.
- Iron, sulfur, and manganese levels are within the WS1's stated limits (7 / 8 / 1 PPM)
- Bathroom count matches a Springwell sizing tier (1-4, 4-6, or 7+)
- Coliform test result determines whether to add UV (positive = add it, negative = skip it)
- Hardness above 7 GPG means you'll also need a softener installed after the WS1
- Install location has electrical, drain access, and 4+ feet of vertical clearance
- Existing pressure tank is functional (test before installing the WS1)