---
product_id: 670574095
title: "Waterdrop Alkaline Water Filter WD-ALK35, Alkaline Filter for Reverse Osmosis System, 9.5 pH Balance and Restore Minerals, Under Sink Water Filter, 1/4\" Quick Connect"
brand: "waterdrop"
price: "£52.30"
currency: GBP
in_stock: true
reviews_count: 5
category: "Waterdrop"
url: https://www.desertcart.co.uk/products/670574095-waterdrop-alkaline-water-filter-wd-alk35-alkaline-filter-for-reverse
store_origin: GB
region: United Kingdom
---

# 9.5 pH alkaline boost 1/4" quick connect install NSF/ANSI certified safety Waterdrop Alkaline Water Filter WD-ALK35, Alkaline Filter for Reverse Osmosis System, 9.5 pH Balance and Restore Minerals, Under Sink Water Filter, 1/4" Quick Connect

**Brand:** waterdrop
**Price:** £52.30
**Availability:** ✅ In Stock

## Summary

> 💦 Upgrade your water, upgrade your life — sip smarter, live better!

## Quick Answers

- **What is this?** Waterdrop Alkaline Water Filter WD-ALK35, Alkaline Filter for Reverse Osmosis System, 9.5 pH Balance and Restore Minerals, Under Sink Water Filter, 1/4" Quick Connect by waterdrop
- **How much does it cost?** £52.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/670574095-waterdrop-alkaline-water-filter-wd-alk35-alkaline-filter-for-reverse)

## Best For

- waterdrop enthusiasts

## Why This Product

- Trusted waterdrop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Certified Pure & Safe:** NSF/ANSI certification guarantees leak-free, contaminant-free alkaline water.
- • **Long-Lasting Wellness:** Enjoy up to 6 months of premium alkaline water without frequent replacements.
- • **Mineral-Rich Vitality:** Restore essential minerals to enhance metabolism, energy, and flavor in every sip.
- • **Elevate Your Hydration Game:** Boost your water’s pH to a revitalizing 7.5-9.5 for optimal wellness.
- • **Seamless Under-Sink Integration:** Effortless 1/4" quick connect design for hassle-free installation with your RO system.

## Overview

The Waterdrop WD-ALK35 Alkaline Water Filter transforms reverse osmosis purified water by elevating its pH to 7.5-9.5 and reintroducing vital minerals for enhanced taste and health benefits. Designed for easy under-sink installation with a 1/4" quick connect, this NSF/ANSI certified filter ensures safe, mineral-rich hydration for up to 6 months, making it a sustainable and convenient upgrade for your home water system.

## Description

Waterdrop Reverse Osmosis Alkaline Water Filter

Review: Does what it’s supposed to do - Unit was easy to install and performs as expected. Prior to installation my RO TDS was 7ppm. After installation TDS is now 27 ppm and pH is 7.8. From what I’ve read I was expecting a 20 point bump and that’s exactly what I got. Water taste is similar to some of the bottled “Smart Water” products. Both pH and TDS meters were calibrated with calibration fluids prior to test. (Leftover from planted aquarium days) I will occasionally retest to determine when replacement is required. I would be happy with 5-6 months of service. Based solely on my experience, I would recommend.
Review: Will buy again - Instantly noticed the change in water quality.

## Features

- 𝐌𝐢𝐧𝐞𝐫𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧 𝐔𝐩𝐠𝐫𝐚𝐝𝐞: Experience the upgrade from pure to healthful water with our innovative Alkaline Mineralization Filter, featuring the PCC technology that elevates your water's pH to an optimal 7.5-9.5, while infusing beneficial minerals for better vitality.【Please Note】The WD-ALK35 filter is not compatible with the X series Reverse Osmosis System.
- 𝐍𝐒𝐅/𝐀𝐍𝐒𝐈 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝: Ensuring safety and peace of mind, our alkaline mineral filter guarantees pure water and good match, effectively diminishing the risk of leaks. Savor the convenience of effortless access to alkaline mineral-rich water in the comfort of your home.
- 𝐑𝐞𝐯𝐢𝐭𝐚𝐥𝐢𝐳𝐞 𝐘𝐨𝐮𝐫 𝐁𝐨𝐝𝐲: This alkaline mineral filter design to balance your body's pH for improved well-being. Enjoy a boost in metabolism and an infusion of vitality during sports. Furthermore, it enriches the flavor of your coffee and tea, taking your daily hydration to new heights of enjoyment.
- 𝐄𝐟𝐟𝐨𝐫𝐭𝐥𝐞𝐬𝐬 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧: Designed for hassle-free integration with RO system, undersink filter system, or refrigerator for easy installation. This water solution delivers a steady stream of healthful, mineralized water, transforming your hydration experience at home.
- 𝐋𝐨𝐧𝐠-𝐥𝐚𝐬𝐭𝐢𝐧𝐠 𝐋𝐢𝐟𝐞𝐬𝐩𝐚𝐧: Achieve enduring wellness with our alkaline mineralization water filter, guaranteed for 6 months. Savor the taste of healthy, on-tap water without the hassle and cost of frequent replacements or bottled water. Embrace a sustainable choice that combines longevity and affordability.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CQ3VP9N7 |
| Best Sellers Rank | #112,715 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #255 in Under-Sink Water Filters |
| Brand | Waterdrop |
| Brand Name | Waterdrop |
| Customer Reviews | 4.3 out of 5 stars 108 Reviews |
| External Testing Certification | ANSI |
| External testing certification | ANSI |
| Included Components | ALK35 𝐀𝐥𝐤𝐚𝐥𝐢𝐧𝐞 Water Filter * 1, User Manual |
| Item Dimensions D x W x H | 6.6D x 6.6W x 27.9H centimeters |
| Manufacturer | Waterdrop |
| Manufacturer Part Number | WD-ALK35 |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | WD-ALK35 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product Benefits | Increases pH level and adds essential minerals back into the water |
| Product benefits | Increases pH level and adds essential minerals back into the water |
| Product dimensions | 6.6D x 6.6W x 27.9H centimeters |
| Set Name | WD-ALK35 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Waterdrop
- **External testing certification:** ANSI
- **Material:** Plastic
- **Product benefits:** Increases pH level and adds essential minerals back into the water
- **Product dimensions:** 6.6D x 6.6W x 27.9H centimeters

## Images

![Waterdrop Alkaline Water Filter WD-ALK35, Alkaline Filter for Reverse Osmosis System, 9.5 pH Balance and Restore Minerals, Under Sink Water Filter, 1/4" Quick Connect - Image 1](https://m.media-amazon.com/images/I/617BEVyf2tL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does what it’s supposed to do
*by J***. on 1 April 2024*

Unit was easy to install and performs as expected. Prior to installation my RO TDS was 7ppm. After installation TDS is now 27 ppm and pH is 7.8. From what I’ve read I was expecting a 20 point bump and that’s exactly what I got. Water taste is similar to some of the bottled “Smart Water” products. Both pH and TDS meters were calibrated with calibration fluids prior to test. (Leftover from planted aquarium days) I will occasionally retest to determine when replacement is required. I would be happy with 5-6 months of service. Based solely on my experience, I would recommend.

### ⭐⭐⭐⭐⭐ Will buy again
*by J***N on 23 March 2026*

Instantly noticed the change in water quality.

### ⭐⭐⭐⭐⭐ water filter
*by B***S on 23 May 2026*

make my water taste great

## Frequently Bought Together

- Waterdrop 𝐀𝐥𝐤𝐚𝐥𝐢𝐧𝐞 Water Filter WD-ALK35, Alkaline Filter for Reverse Osmosis System, pH Balance and Restore Minerals for RO Alkaline Filter, Under Sink Water Filter, 1/4" Quick Connect
- Waterdrop G3 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sink RO System, 2:1 Pure to Drain, Smart LED Faucet
- Waterdrop G3 Replacement Filter 1-Year Combo, Pack of 2 WD-G3-CF Filters and 1 WD-G3-CB Filter, Replacement for WD-G3-W, WD-G3P600 and WD-G3P800-W Reverse Osmosis System

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-06*