# What are the best countertop water filter systems for reducing chlorine taste and odor in tap water? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the best countertop water filter systems for reducing chlorine taste and odor in tap water?

## Products

### Culligan Culligan Countertop Filtration Faucet Mount Model FM-25
```yaml
product: culligan-culligan-countertop-filtration-faucet-mount-model-fm-25
brand: Culligan
price_gbp: 25.25
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
warranty: 2-year limited warranty
flow_rate: 0.5 GPM
dimensions: 4.87 in. length x 2.88 in. width x 3.46 in. height
installation: No-tools-needed, fits most faucets with adapter; pull diverter tab to activate
filter_capacity: 200 gal
contaminant_removal: Bad taste & odor, aesthetic chlorine taste & odor, sediment, lead, turbidity, atrazine, lindane, nominal particulate class I
```

- **Price:** £25.25 [^1]
- **Summary:** The Culligan FM-25 is a faucet-mounted filter that uses an FM-25R cartridge to reduce chlorine taste and odor plus lead, sediment, atrazine, lindane, and particulate class I. It has a compact chrome body, simple no-tools installation with faucet adapters, a filter life of up to 200 gal or 2 months, and a low filtration flow rate of 0.5 GPM. Suited for users wanting an inexpensive, easy-to-install on-tap filter for improving taste and basic contaminant reduction.
- **Ideal For:** Ideal for reducing chlorine taste and odor because it is NSF-tested for chlorine reduction, uses activated-carbon based FM-25R cartridge, and has a rated filter capacity of 200 gal.
- **Additional Sources:** [^2], [^1], [^2]

### APEC APEC ROES-50 Essence Series
```yaml
product: apec-apec-roes-50-essence-series
brand: APEC
price_gbp: 172.34
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
warranty: 2 year extended manufacturer warranty with registration
dimensions: 15.5 in L x 5.25 in W x 17 in H (system); tank 11 in x 11 in x 15 in
installation: Under-sink installation; includes installation hardware and designer faucet
filter_capacity: 50 gallons per day
contaminant_removal: Removes up to 99% of contaminants including chlorine, taste, odor, fluoride, arsenic, lead, chromium
```

- **Price:** £172.34 [^3]
- **Summary:** The APEC ROES-50 Essence Series is a 5-stage under-sink reverse osmosis system that delivers up to 50 gallons per day and high contaminant rejection for very pure, great-tasting drinking water. It includes a 4-gallon storage tank, designer faucet, and full installation hardware, making it suitable for homes seeking robust RO performance and WQA certification.
- **Ideal For:** Ideal for reducing chlorine taste and odor because its multi-stage RO system includes carbon block prefilters and a polishing carbon post-filter and removes up to 99% of chlorine and related taste and odor compounds.
- **Additional Sources:** [^4], [^5], [^3], [^4], [^5]

### ISPRING RCD100 5-Stage Countertop Reverse Osmosis System RCD100
```yaml
product: ispring-rcd100-5-stage-countertop-reverse-osmosis-system-rcd100
brand: ISPRING
price_gbp: 417.81
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
warranty: 1-year
flow_rate: 0.16 Gallons Per Minute
dimensions: 15.5 L x 7 W x 15.5 H in
installation: Countertop plug-and-play, no plumbing required
filter_capacity: 100 GPD
contaminant_removal: Removes up to 99% of over 1,000 contaminants including chlorine, lead, PFAS, microplastics, heavy metals
```

- **Price:** £417.81 [^6]
- **Summary:** The iSpring RCD100 is a plug-and-play 5-stage countertop reverse osmosis dispenser with instant hot water, UV-C sterilization, and a tankless design. It delivers up to 100 GPD, removes up to 99% of 1,000+ contaminants and offers multiple temperature settings, suiting small households and offices seeking high-purity drinking water without plumbing. Filters are supplied as a replacement set lasting up to 2 years.
- **Ideal For:** Ideal for reducing chlorine taste and odor because the 5-stage RO plus carbon-based stages remove chlorine and the system specifies removal of chlorine and up to 99% of contaminants.
- **Additional Sources:** [^7], [^8], [^6], [^7], [^8]

### Waterdrop Waterdrop G3 P800 Reverse Osmosis System G3P800
```yaml
product: waterdrop-waterdrop-g3-p800-reverse-osmosis-system-g3p800
brand: Waterdrop
price_gbp: 633.44
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
warranty: 1 year
dimensions: 18.11 x 5.67 x 17.73 in
installation: Under-sink tankless; may require drilling for optional faucet and professional plumbing; requires outlet
filter_capacity: 800 GPD
contaminant_removal: PFAS, fluoride, lead, chromium, heavy metals, bacteria and viruses (UV reduces 99.9%)
```

- **Price:** £633.44 [^9]
- **Summary:** Tankless under-sink RO system with a 10-stage filtration including sediment, carbon, RO membrane and UV sterilizer producing up to 800 GPD; NSF/ANSI certified for multiple standards and includes optional smart faucet with TDS display. Suits users who want high-capacity, on-demand purified water without a storage tank and strong contaminant removal.
- **Ideal For:** Well suited because its activated carbon stages plus RO membrane and UV sterilizer remove chlorine taste and odor and it has NSF certifications confirming chlorine reduction.
- **Additional Sources:** [^10], [^11], [^9], [^10], [^11]

### Waterdrop WD-A2 Countertop Reverse Osmosis B-WD-A2-RFSET
```yaml
product: waterdrop-wd-a2-countertop-reverse-osmosis-b-wd-a2-rfset
brand: Waterdrop
price_gbp: 297.7
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
warranty: 1 year
flow_rate: 100 GPD
dimensions: 15.9 in x 8.2 in x 15.7 in
installation: countertop plug-in no plumbing
filter_capacity: 1100 gallons
contaminant_removal: chlorine fluoride arsenic lead PFOS PFOA TDS microplastics (RO + carbon + UV)
```

- **Price:** £297.7 [^12]
- **Summary:** Countertop plug-in reverse osmosis dispenser with 5-stage filtration including 0.0001μm RO membrane, carbon block, and UV sterilization, a 159 oz feed tank and a 40 oz removable pitcher for instant hot, cold, or room-temperature water. Offers a high throughput (100 GPD), a 3:1 pure-to-drain ratio, and smart touch controls, suited for households wanting RO-level contaminant removal without under-sink installation. Filter lifespan is about 12 months or 1100 gallons.
- **Ideal For:** Ideal for reducing chlorine taste and odor because it combines carbon block filtration with RO purification and UV, plus a 12-month/1100-gallon A2RF filter and a high flow capacity (100 GPD).
- **Additional Sources:** [^10], [^13], [^12], [^10], [^13]

---
## References & Sources
[^1]: Culligan DIY, accessed 2026-06-15. https://culligandiy.com/products/faucet-mount-water-filter-chrome
[^2]: The Home Depot, accessed 2026-06-15. https://www.homedepot.com/p/Culligan-Faucet-Mount-Filter-System-Advanced-Chrome-FM-25/333466761
[^3]: APEC Water, accessed 2026-06-15. https://www.apecwater.com/products/roes-50
[^4]: Lowe's, accessed 2026-06-15. https://www.lowes.com/pd/APEC-Water-Essence-Premium-Quality-5-Stage-Under-Sink-Reverse-Osmosis-Drinking-Water-Filter-System/1002824078
[^5]: WaterFiltersOnline, accessed 2026-06-15. https://www.waterfiltersonline.com/replacement-water-filters/apec-water-filters/5-stage-tfc-reverse-osmosis-ro-pure-drinking-water-system-help.html
[^6]: Lowe's, accessed 2026-06-15. https://www.lowes.com/pd/iSpring-iSpring-5-Stage-Countertop-Reverse-Osmosis-Water-Dispenser-Instant-Hot-RO-Water-UV-Sterilization-Tankless-Design-100-GPD-with-Replacement-Filter-Set/5017193471
[^7]: Water Wellness Works, accessed 2026-06-15. https://waterwellnessworks.com/products/ispring-5-stage-countertop-reverse-osmosis-water-dispenser-rcd100
[^8]: Device Report (product listing), accessed 2026-06-15. https://device.report/ispring/rcd100
[^9]: Home Depot, accessed 2026-06-15. https://www.homedepot.com/p/Waterdrop-Tankless-3-Stage-Under-Sink-Reverse-Osmosis-Water-Filtration-System-with-800-GPD-Membrane-and-UV-Sterilizer-B-WD-G3P800-W-N/321339734
[^10]: Amazon, accessed 2026-06-15. https://www.amazon.com/dp/B0XXXXXXX
[^11]: Reviewed, accessed 2026-06-15. https://www.reviewed.com/cooking/content/waterdrop-g3p800-reverse-osmosis-filter
[^12]: Home Depot, accessed 2026-06-15. https://www.homedepot.com/p/Waterdrop-WD-A2-Countertop-Reverse-Osmosis-System-Hot-and-Cold-RO-System-Portable-Pure-Water-Tank-Extra-1-A2RF-RO-Filter-B-WD-A2-RFSET/334228979
[^13]: Waterdrop store, accessed 2026-06-15. https://www.waterdrop.com/products/wd-a2-countertop-ro-dispenser-b-wd-a2-rfset