Rainshower Restore Shower Filter (CQ-1000)

Checked against its certification listings: what they cover, what the maker claims, and what it costs over five years.

Shower

Listings checked Oct. 16, 2026

Certified to

NSF/ANSI 177WQA listingchecked Oct. 16, 2026

Certified for: Chlorine

Maker’s list price

$90

as of Oct. 16, 2026

Each replacement, at list price

Restore replacement cartridge (RCCQ-RS): $75

Five years, 40 gallons of showers a day

$615

0.8¢ per gallon

Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

Price on Amazon The maker’s page

List price from the maker’s site, checked Oct. 16, 2026. Prices change; the maker’s page is the final word.

What the listings say

Standard	Certifier	Claims	Listing
NSF/ANSI 177	WQA	Free Available Chlorine	Read the listing checked Oct. 16, 2026

Certified for, and claimed

Certified, by a listing

Chlorine

Claimed by the maker only

None recorded.

What it costs over five years

40 gallons of showers a day, EPA WaterSense’s figure for the average family, all through this one shower. Installation not included.

Item	Replaced	Count	Amount
System, with first media	—	1	$90
Restore replacement cartridge (RCCQ-RS)	Every 8 monthsgallon rating runs out first	7	$525

Five-year total$615

Per gallon0.8¢

Run it for your household

Worth knowing

WQA lists the CQ-1000, which Rainshower now sells as the Restore (SKU MPCQ-1KNH-RS); the Restore page says the CQ1000 is WQA certified to NSF/ANSI 177. WQA names its cartridge RCCQ-A or RCCQ-PC, and Rainshower sells the RCCQ-RS for it. Rainshower rates the cartridge for 10,000 gallons and gives no month rating. The $90 price is the filter alone; with one of Rainshower’s showerheads it is up to $139.

Other shower filters

All filters