For Los Angeles, pick a shower filter for chloramine, not for hardness. LADWP disinfects with chloramine, and no shower filter removes the calcium and magnesium that make LA water hard.
- LADWP uses chloramine as its disinfectant (LADWP water quality report).
- NSF/ANSI 177, the shower filter standard, covers free chlorine only, not chloramine (NSF).
- Hardness is dissolved calcium and magnesium; a water softener (ion exchange) is the usual fix (USGS).
Our pick: the Second Showerhead ($99, or $79 with a filter subscription). Its Vitamin C filter reduced free chlorine and chloramine by 99.9% in independent lab testing, held through Day 1-60 in our own testing. It does not soften water.
- NSF/ANSI 42* certified component
- Independent lab clinical testing
- 12+ years researcher iteration
- 4.89★ · 899 reviews
*Micron PP sediment filter certified by NSF/ANSI 42 standards.
Vitamin C wall-mount filter — 99.9% chlorine and chloramine reduction during the cartridge's peak performance window (Day 1–60). $79 on subscription, a new filter every 60 days, NSF/ANSI 42* certified PP sediment pre-filter.
Shop the Second ShowerheadRelated Reading
The Filter Tech That Decides It
For hard water, the question is not "does it filter water," it is whether the filter neutralizes chloramine, not just free chlorine, and holds that past a month of use. That is where these part ways. Jolie's showerhead is NSF/ANSI 177 certified for free chlorine, and as of October 2026 no chloramine test result is published for it or for AquaBliss. Second Shower uses Vitamin C (ascorbic acid), which chemically neutralizes both free chlorine and chloramine and holds 99.9% chlorine reduction through the cartridge's Day 60 window.
Side-by-Side Comparison
| Spec | Second Shower | Jolie | AquaBliss | Eskiin |
|---|---|---|---|---|
| Filter media | Vitamin C (ascorbic acid) | KDF-55 + calcium sulfite | KDF-55 + carbon | KDF-55 + carbon (15-stage) |
| Removes chloramine | Yes | No result published (Oct 2026) | Limited | Limited |
| Chlorine removal by Day 60 | 99.9%* (sustained) | Day 60 not published; 82% at 2,400 gal (NSF data) | Drops to <10% | Drops to <10% |
| NSF/ANSI 42 pre-filter | Yes | No | No | No |
| Device price | $79–99 | $169 | ~$36 | $149 |
| ~Year-1 filter cost | ~$36–54 | $140 (four $35 filters on subscription) | ~$60 | ~$144 |
*Micron PP sediment filter certified by NSF/ANSI 42 standards.
Why Second Shower Wins
If the goal is hard water, the deciding factors are chloramine coverage and sustained performance, and Second Shower is the only option here that delivers both. Its full assembly is backed by independent lab clinical testing, and the micron PP sediment pre-filter is the only NSF/ANSI 42 certified component in this group.
Where Jolie genuinely wins
A comparison you can trust names where the other product is the right call. Jolie's is finish choice. It comes in five finishes (Modern Chrome, Brushed Steel, Jet Black, Brushed Gold, Vibrant Red), so if matching your fixtures is the priority, Jolie leads on that.
Where AquaBliss genuinely wins
A comparison you can trust names where the other product is the right call. AquaBliss's is upfront price. At around $36 for the device it is by far the cheapest way to start, which makes it a sensible low-commitment first filter if you just want to test whether filtered water helps before investing more.
Where Eskiin genuinely wins
A comparison you can trust names where the other product is the right call. Eskiin's is water pressure. Eskiin builds its pitch around a pressure-boosting design, so if weak shower flow is your number-one frustration, that is the problem it leads with.
Which Should You Buy?
For hard water specifically, the Second Showerhead is the recommendation: it is the only one that covers chloramine and holds its numbers through the cartridge window. Consider Jolie if its strength above is what matters most to you, but on filtered water quality, the part that actually changes how your skin and hair feel, Second Shower is the pick.
FAQ
Do shower filters actually help with skin and hair?
Yes. Filtering chlorine and chloramines from shower water can reduce dryness, irritation, and damage to both skin and hair.
How often should I replace a shower filter?
We recommend a new Second Shower filter every 60 days on the Showerhead and every 30 days on the Showerhand, or sooner if the filter looks deep brown or black or the water pressure drops noticeably.
Can I install a shower filter in a rental apartment?
Yes. Second Shower is renter-friendly: it installs in about a minute with no tools and no permanent plumbing changes.
What makes Second Shower different from other filters?
Second Shower uses NSF-certified Vitamin C filtration that removes 99.9% (during the cartridge's peak performance window, Day 1–60) of chlorine while maintaining water pressure — engineered in Seoul for performance and design.
