SpringWell STR-1 Tannin Removal System and Softener

Name: SpringWell STR-1 Tannin Removal System and Softener
Brand: SpringWell
Price: 2787.62 USD

Water softener · 12 GPM · Treats tannins, hardness · $2,788 (sale) at SpringWell as of Oct 2026

The SpringWell STR-1 is a single whole-house tank that combines tannin removal with salt-based softening, for wells with tannin color and hardness in the same test. SpringWell does not say what resin it uses, and no maximum tannin level is published. The STR-1 (Core, 1-3 bathrooms) is rated 12 GPM and 30,000 grains; the STR-4 (Pro, 4-6 bathrooms) is 15 GPM and 45,000 grains. No NSF, WQA or IAPMO certification is stated.

It is not an iron filter. SpringWell requires feed water free of hydrogen sulfide, oils, copper above 1.30 mg/L and oxidized iron or manganese, so iron or a rotten-egg smell needs sediment and iron or sulfur treatment ahead of this tank, with UV after it. Regeneration is automatic and salt is the only consumable; you need a drain, brine tank and power. The tank is 10 x 54 in., 88 lb, with 1 in. connections.

Price was $2,787.62 at springwellwater.com as of Oct 2026 (sale; regular $3,279.55); the STR-4 was $3,015.90. Install is DIY. Warranty is lifetime on tanks, valves and heads, but the product page limits electronic heads to 5 years where SpringWell's warranty page says 7. The '6-month money-back guarantee' badge covers only unused, uninstalled items, with a 10% restocking fee; an installed system is returnable only if SpringWell finds it defective.

Check price at SpringWell

SpringWell STR-1 Tannin Removal System and Softener well water water softener

Specifications

Verified 2026-10-06. Fields the manufacturer does not publish are marked “Not stated”.

SpringWell STR-1 Tannin Removal System and Softener specifications
Model	STR-1 (Core, 1-3 bathrooms, 30k grains); STR-4 (Pro, 4-6 bathrooms, 45k grains) is the larger size on the same listing
Type	Water softener
Treats	Tannins, Hardness; also yellow or tea-coloured water, scale from hard minerals
Service flow	12 GPMSTR-1: 12 GPM; STR-4: 15 GPM. Page headline: 'Up to 12+ GPM with no drop in water pressure'. SpringWell does not state the resin type or mechanism on the product page beyond 'combines tannin removal and salt-based softening'; no maximum tannin level is published. Well water must be free of hydrogen sulfide, oils, copper above 1.30 mg/L and oxidized iron/manganese.
Capacity	30,000 grainsSTR-1 rated 30,000 grains (STR-4: 45,000 grains). Automatic backwash and regeneration; salt is the only consumable.
Connection	1 in.
Installation	DIY'A straightforward install, from start to finish' with a downloadable manual and installation video; needs a drain line, brine tank with salt and power for the electronic head. 1 in. connections.
Warranty	Lifetime manufacturer warrantyLifetime: 'Manufacturer's lifetime warranty against defects' on fittings, tanks, housings, bypasses, valves and in/out heads under normal use; registered original owner at the original address only. Electronic-head term conflict (read 2026-10-06): the Warranty tab on this product page says "Limited Warranty for a period of 5- years" for solid-state electronic heads, while springwellwater.com/warranty/ says "Limited Warranty for a period of 7- years"; both say 10 years for retention/mineral tanks 14 in. or larger. The same 5-vs-7 mismatch appears on every SpringWell product page read today, so it is a site-wide inconsistency, not an STR-specific term; the STR-1/STR-4 installation manual contains no warranty text. Page badge reads '6-month money-back guarantee'. Return fine print on the product page: returns accepted within six months only for unused, uninstalled items in undamaged packaging, with a 10% restocking fee (up to 25% for refused deliveries) and shipping not refunded; the "6-month Performance Promise" says installed systems are not eligible for return unless SpringWell determines them defective.
Certifications	Not statedNo third-party system certification is stated on the STR product page. Re-checked 2026-10-06: product page text still contains no NSF, WQA, IAPMO or "certified" wording. WQA certified-product database (find.wqa.org/find-products) keyword searches for "SpringWell", "Spring Well", "Wise Water", "BlackComb" and "FutureSoft" each returned zero listings (a control search for "Pentair" returned listings). IAPMO listing directory could not be queried by script, so IAPMO status was not checked. NSF certified-product database (info.nsf.org), searched 2026-10-06: no matching listing found for this model.
Dimensions	STR-1 tank 10 in. W x 54 in. H (63 in. with head); brine tank 18 x 33 in. STR-4 tank 13 in. W x 54 in. H.
Weight	88 lb
Price	$2,788 (sale) at SpringWell as of Oct 2026

Published features

Single tank combines tannin removal and salt-based softening to handle discolored and hard water
Automatic backwash and regeneration
Up to 12+ GPM with no drop in water pressure
Bluetooth monitoring from your phone
Lifetime warranty
6-month return window for unused, uninstalled items only, with a 10% restocking fee (the page badge calls it a '6-month money-back guarantee')
Free US shipping, ships in 3-5 business days

Pros and cons

Pros

Treats tannins and hardness in one tank, so no second softener is needed
Lifetime warranty on tank and valve; electronic head covered 5 years per the product page's warranty text (SpringWell's warranty page says 7)
12 GPM service flow and 30,000-grain capacity for 1-3 bathrooms
Bluetooth head and DIY install manual

Cons

Resin type, mechanism and maximum tannin level are not published
No published NSF/ANSI certification
Not for water with hydrogen sulfide, oils or oxidized iron/manganese; those need pre-treatment
Most expensive tannin unit researched ($2,787.62 on sale)
The '6-month money-back guarantee' badge covers only unused, uninstalled items (10% restocking fee); an installed system is returnable only if SpringWell finds it defective

Our take

The STR-1 earns its price only if your test shows both tannins and hardness, because it replaces two tanks with one. If you have tannins alone, the US Water Systems Matrixx Tannin costs less; if you have iron or sulfur, neither unit is the first fix and you need iron treatment ahead of either. The unpublished resin type and tannin limit are the gap, and SpringWell's 6-month return window does not cover an installed system, so send SpringWell your test before ordering and retest after install.

Not sure it is the right size for your flow and your water test? Work through the sizing guide, or compare every system we cover on the best well water filtration systems (2026) list.

Where to buy

$2,788 (sale) at SpringWell as of Oct 2026. Prices change; the links open the current listing.