The Best Bath Filters

by Justin Thomas •

The Details

Typically, 60% of the chlorine that most people absorb daily comes from showering or bathing in chlorinated water. Chlorine damages your hair and skin  — you can read about the hazards of showering in chlorinated water here. Bath water also contains things like heavy metals and VOCs (volitive organic compounds). Ideally, all these things should all be filtered out.

Filtering bath water is a similar process to filtering shower water,  If you have a shower head incorporated in your bath you can use my recommend shower filters (a VitaMax Vitamin C In-Line Filter together with a Sprite HOB-CM Brass Shower Filter), and use your shower to fill your bath. This means you only need one set of filter for both shower and bath.


Otherwise, I recommend using a dedicated bath filter like the Crystal Quest Bath Filter. This bath filter has a 2-step filtration process — it features both KDF (Kinetic Degradation Fluxion) filtration (good for removing heavy metals) and Granular Activated Carbon filtration (good for removing sediment, chlorine and radon).

The Crystal Quest Bath Filter available from Amazon for around $50.

Vitamin C Tablets or Powder

Vitamin C tablets or Vitamin C powder will remove 99% of free chlorine and 99% of chloramines from bath water. Chloramine or NH2Cl (a combination of chlorine and ammonia) is now commonly being used in place of chlorine for disinfection, but chloramine is not easily removed from water. However, Vitamin C can neutralize 99% of the chloramines from water. To back this up, the San Francisco Public Utilities Commission now states on their website that only Vitamin C can be used to remove chlormaines from municipal water. Here is the quote from the Commission:

Vitamin C (ascorbic acid) has recently been included in AWWA Standard (AWWA, 2005b) as one of the methods for dechlorination of disinfected water mains. SFPUC and other utilities have used Vitamin C for dechlorination prior to environmental discharges of chlorinated and chloraminated water. Since ascorbic acid is weakly acidic, the pH of water may decrease slightly (Tikkanen et al., 2001). Ascorbic acid has been used for a long time as one of the dechlorinating agents for preservation of chlorinated or chloraminated water samples for laboratory analysis.

The full document can be found here.

Vitamin C tablets are slight more convenient since the some in measured amounts (tablets) and they also “fizz” to release the Vitamin C. However, Vitamin C powder is quite a bit less expensive overall.

One More Option

If you have a showerhead incorporated in your bath, you can make use of my recommend shower filters (a VitaMax Vitamin C In-Line Filter together with a Sprite HOB-CM Brass Shower Filter), and use your shower to fill your bath. However, it does take longer to fill your bath, and you’ll lose some heat from the water and it falls from the showerhead.

Comments 10

  1. Is it recommended to use just the Vitamin C in lieu of a filter? That would be easy and cost effective.

  2. Hello. I came across your article and saw that you recommend the ‘Crystal Quest Filter’ for showers etc. I actually purchased this filter about a year ago, and had issues with particles from the filter floating in my daughter’s bath water. I ran water through the filter as the instructions indicated several times which wasted gallons of water, and particles were still present. When I called the company, I was told that this was ‘normal’, and should diminish after a few uses. That was not entirely true. Another oddity I experienced with this filter was discoloration after a week of it being in my home turning a yellowish-green color. I have since returned it, and have yet to find another filter for our showers/bath.

    Any idea why this occurred? What other filters would you recommend? My family and I will be moving to NC soon and I’d like to purchase a few filters for our new home. I’ve come across some informative and incriminating articles/information about the water being seriously polluted in various parts of NC especially at Camp Lejeune and surrounding areas which concerns me. If you or your readers have any other recommendations for shower filters, would you kindly share.


  3. How many mg of Vit C do you recommend per tub full? I found some powder that has 1250 mg per 1/4 tsp. knowing an amount in milligrams would be helpful. Thanks for your great reviews!

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