Sprite Pure Bath Filter review

Sprite Pure Bath Filter (BB-WH)

The only bath filter with independent test data

The one bath filter somebody outside the company has actually measured, and the numbers are the most useful thing in this category: 50% chlorine reduction at 2.53 GPM, and chlorine down to undetectable at 1.01 GPM — same unit, same water, different tap position. It also moved chloroform by under 1%, so disinfection byproducts are untouched.

Published specifications

Filter media

Chlorgon — Sprite's proprietary blend, independently described as copper, zinc and calcium sulfiteThe same media family as Sprite's shower filters, which is the strongest thing about it. Sprite does not publish a composition itself; the blend description is WaterFilterGuru's.Source: WaterFilterGuru, "Sprite Bath Filter Review" — independent testing at two measured flow rates, credited to them (retrieved 2026-10-17)

Stated flow rate

Not publishedSprite publishes no flow rating. Independent testing ran it at 1.01 GPM and 2.53 GPM and found the chlorine result differed by half between them, which makes the missing figure the most consequential omission in the category.

Rated cartridge life

Approximately 25 to 30 baths (Sprite's estimate); about 900 gallons by independent reckoningThe shortest service life of any product in this registry when expressed per fill. The consumable, not the housing, is the purchase.Source: WaterFilterGuru, "Sprite Bath Filter Review" — independent testing at two measured flow rates, credited to them (retrieved 2026-10-17)

Chloramine

Not publishedNothing is published about chloramine, and the independent chloroform result suggests nothing should be assumed. Calcium sulfite and KDF do not break the chlorine-ammonia bond; catalytic carbon and vitamin C are the media that do.

Format

Bath ball — hangs under the tub spout on a universal detachable harness, no toolsIt sits in the falling water rather than in the plumbing, which is why no threads are needed and why contact time is so short.Source: Sprite Showers BB-WH Pure Bath Filter, White — listing on Amazon.com (retrieved 2026-10-17)

Housing

Not publishedSprite publishes no housing material or dimensions for the BB-WH.

What it does well

• +Independently measured at two flow rates, which nothing else in this category has
• +Chlorine to undetectable levels at 1.01 GPM — a genuine result, honestly bounded
• +The same Chlorgon and KDF media family as Sprite's certified shower filters
• +Universal detachable harness, no tools, fits most bathtub spouts
• +The cheapest entry into the category from a brand with a real certification record elsewhere
• +Replacement cartridge (BBC) is stocked separately and cheaply

Where it falls short

• −Chlorine reduction falls to 50% at 2.53 GPM — the rate a tub actually fills at
• −Measured to overflow at moderate flow
• −No reduction of disinfection byproducts worth reporting
• −Approximately 25 to 30 baths per cartridge is the shortest effective life here
• −Tested to NSF/ANSI 177 by Sprite's account, but holds no certification listing of its own
• −Sprite publishes no dimensions, no capacity in gallons and no flow rating for the unit

What it does not do

• ×It does not reduce disinfection byproducts. Independent testing measured chloroform down by less than 1% — the trihalomethanes are what free chlorine turns into, and this does not touch them. What a filter actually removes.
• ×It does not hold a certification. Sprite's shower filters do, from IAPMO R&T; this bath unit does not appear in any listing we could search.
• ×It does not soften water. Chlorgon performs no ion exchange. Why no shower or bath filter softens.
• ×It does not deliver its headline chlorine result at a normal fill rate — only at about 1 GPM.
• ×It does not last long. Sprite's own estimate is approximately 25 to 30 baths.

Who it is for

Anyone who wants a bath filter whose performance is a measured figure rather than a marketing adjective, and who is willing to run the tap slower to get the result.

Skip it if

You need the tub filled fast. The same testing found it overflows at moderate flow, and the chlorine figure halves as the flow rises.

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Certifications and claims

Two tables, deliberately. A certification names a standard and the body that issued it, and you can look it up. A claim is the maker describing itself. Both belong here; conflating them does not.

Certifications (0)

No third-party certification is published for this product. That is not evidence of poor performance and it is not evidence of good performance — it means there is nothing independent to check.

The maker’s own claims (2)

• “Reduces chlorine, sediment and odors, with a universal detachable harness compatible with most bathtub spouts and one replaceable BBC cartridge lasting approximately 30 baths”

  Source: Sprite Showers BB-WH Pure Bath Filter, White — listing on Amazon.com (retrieved 2026-10-17)

• “Tested to NSF/ANSI 177 — reported by independent reviewers as Sprite's position, alongside their finding that the bath filter itself "doesn't hold any official certifications"”

  Source: WaterFilterGuru, "Sprite Bath Filter Review" — independent testing at two measured flow rates, credited to them (retrieved 2026-10-17)

  An independent party published a matching measurement: WaterFilterGuru

Sources for this product

• WaterFilterGuru, "Sprite Bath Filter Review" — independent testing at two measured flow rates, credited to them (retrieved 2026-10-17)
• Sprite Showers BB-WH Pure Bath Filter, White — listing on Amazon.com (retrieved 2026-10-17)
• Sprite Showers BBC Pure Bath Chlorgon replacement cartridge — listing on Amazon.com (retrieved 2026-10-17)

The number that defines the whole bath category

Almost everything sold as a bath filter is sold on an adjective. This one has been run on a bench by WaterFilterGuru, whose shower-filter testing this site has cited since launch, and the result is more instructive than a single percentage would have been — because they measured it twice, at two different flow rates.

Read those two rows together and you have the argument this site has made about shower filters for its whole existence, now with a bath filter attached to it: a filter is a contact-time device. The media has to hold the water long enough to react with it. Slow the water and the chemistry has time; speed it up and the water leaves before the reaction finishes.

What it does not do: disinfection byproducts

The same testing measured chloroform — a trihalomethane, and the most common disinfection byproduct in chlorinated tap water — and found it reduced by less than 1%. The reviewers' summary was that the filter "didn't reduce disinfection byproducts" at all.

This is worth stating carefully because it is the gap between what a filter advertises and what a careful buyer wants. Free chlorine is the disinfectant your utility adds. Trihalomethanes are what that chlorine becomes when it reacts with organic matter in the pipes, and they are the compounds the EPA actually regulates under its disinfection byproducts rules. A filter that strips the first and ignores the second has done the easy half of the job. What a filter removes, and what it leaves.

Only a few carbon-block units in our whole registry show a measured result against DBPs, and the Weddell Duo is the one with the strongest published evidence. None of them is a bath filter.

Chlorgon, and the certification Sprite does hold elsewhere

Sprite calls its media Chlorgon and does not publish a composition. The independent review describes it as "a proprietary media made from a blend of copper, zinc, and calcium sulfite" and lists it as "Calcium Sulfite + KDF" — which is the same media family as Sprite's shower filters, and the reason this product starts from a more credible place than an unnamed generic.

But the certification does not carry across. Sprite's Slim-Line 2 shower filter is one of only four products in this registry with a traceable NSF/ANSI 177 certification — a standard, a certifying body and a listing you can search. This bath filter has none of that. The reviewers put it bluntly: it "has been tested to NSF/ANSI 177 ... but it doesn't hold any official certifications."

The consumable is the purchase

Sprite's own estimate is approximately 25 to 30 baths per BBC cartridge, which the independent review converts to roughly 900 gallons and, for a regular bather, an annual running cost several times the price of the unit itself. That is the shortest service life of anything in this registry when expressed per use, and it changes what you are buying: the plastic harness is trivial, and the cartridges are the commitment.

Put next to the Crystal Quest bath ball, which publishes 2,500 gallons and 12 to 18 months, the contrast is stark — and it is a contrast between a measured product with a short honest life and an unmeasured product with a long unverified one. Neither of those is obviously the better deal, which is the sort of thing this category makes you decide without help. The arithmetic, laid out.

What Sprite does not publish

No flow rating, no capacity in gallons, no dimensions, no housing material. The flow rating is the striking omission, because the independent testing proves it is the figure that decides the outcome. A maker that knows its product halves in effectiveness between 1 and 2.5 GPM and publishes no flow specification is leaving out the instruction that matters.

For what it is worth, the practical advice falls out of the data by itself: fill the tub on a slower tap than you would instinctively use, and accept a longer fill. Nobody sells that as a feature, and it is the only way to get the advertised result.

Who should buy it, and who should not

Buy it if you want the one bath filter whose performance is a measured figure rather than a claim, and if a slower fill is an acceptable trade. At the bottom of this category's price range, a 50% chlorine reduction you can trust is a better purchase than a 99% figure nobody will stand behind.

Skip it if you fill the tub fast, if you have children you are bathing daily and the 25-to-30-bath cartridge cycle will irritate you, or if disinfection byproducts are your actual concern — because on the evidence this filter does nothing about them. The full bath comparison puts the four real options in order, and if your problem is the shower rather than the tub, the flagship ranking is the page you want instead.