Brondell Circle RC100 Reverse Osmosis review
By Daryna Klochko · Published · Specs checked Oct 15, 2026 · 
Scores 9.75/10, tied for 1st of the 20 RO systems we track. At $449.99 it costs less than the category median of $459.99. WQA lists it for Chlorine, Lead, Cysts, VOCs, TDS, Arsenic, Fluoride, one of 12 RO systems out of 20 with a certifier listing for a health claim. Its cartridge cost of about $205 a year is level with the $205-a-year median of the 19 RO systems with a stated cartridge cost.
- Price
- $449.99
- Certified for
- Lead · Cysts · VOCs +11
- Flow
- Not stated
- Cartridge life
- 6-month cartridge
- Cost per year
- $205
- Warranty
- 1 year limited
Certification
Listed by WQA under NSF/ANSI 42 · 53 · 58 for Chlorine, Lead, Cysts, VOCs, TDS, Arsenic, Fluoride, checked Oct 15, 2026. Search the WQA listings
- Chlorine
- Lead
- Cysts
- VOCs
- TDS
- Arsenic
- Fluoride
The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water. Listing checked on Oct 15, 2026. What a listing means and what it doesn't
Specs and sources
Checked Oct 15, 2026 · source under each valueFiltration
Cartridges and install
Buying
Warranty, returns and shipping
30 days, unused (10% restocking fee); used filters can’t be returned.
Warranty: 1 year limited. Returns: 30 days, unused (10% restocking fee); used filters can’t be returned. Shipping: not stated by the brand. Source: Brondell data sheet, checked Oct 15, 2026.
Source: Brondell data sheet, checked Oct 15, 2026.
Compared with similar RO systems
All 20 RO systems →| Model | Price | Certified for | Cost per year | Warranty | Score | Where to buy |
|---|---|---|---|---|---|---|
| Brondell Circle RC100 Reverse OsmosisTHIS MODEL | $449.99 | Lead · Cysts +12 | $205 | 1 year limited | 9.75/10 | Check price → |
| Aquasana SmartFlow Reverse Osmosis | $449.99 | Lead · Cysts +9 | $310 | 2 years | 9.25/10 | Check price → |
| Frizzlife PD600-TAM3 Tankless Reverse Osmosis | $469.99 | Brand claims only | $107 | 1 year | 9/10 | Check price → |
| A. O. Smith AOS-DFRO800 Tankless Reverse Osmosis | $474.99 | TDS | $290 | 2 years limited | 9/10 | Check price → |
| Brio G20-U ROSL700 Tankless Reverse Osmosis System | $499.99 | Brand claims only | $340 | 1 year (limited) | 8.75/10 | Check price → |
What owners say
Checked Oct 15, 2026Reviews only on the brand's own site. In our score this is 1.75 of 2 points. How we score
Store ratings change over time; the date shows when we checked.