Crystal Quest Smart Under Sink Water Filter System | Single, Double & Triple Cartridge | Smart + Carbon Block + Sediment Filters | Filters Up to 10,000 Gallons | Easy Install | Clean Tap Water


Our SMART Under Sink Water Filter System reduces or removes contaminants such as chlorine & heavy metals from tap water to offer the freshest taste to you. The perfect solution for any household, this water filter system is quick and easy to install and use, attractive, and convenient. This solid state water filter uses the latest technologies that blend the adsorption capabilities of coconut shell activated carbon with Eagle Redox Alloy and more. 


• Combines Smart Media, Carbon Block, Sediment & more for powerful purification. 
• Long-lasting performance for home, office, or apartment use. 
• Installs neatly with included faucet & full hardware kit. 
• Reduces chlorine, heavy metals & contaminants for cleaner, fresher water. 
• Flow rate between 0.75 to 1 gallon per minute.


We are a trusted manufacturer of high-quality water filtration products, serving residential, commercial, and industrial markets for over 30 years. Our commitment to innovation, quality, and customer satisfaction has made us a leading name in water filtration. Proudly built in the USA, we offer cost-effective and reliable solutions to meet various water treatment needs.

Why Choose Us?

  • Decades of Expertise – Over 30 years of experience in water filtration manufacturing

  • Reliable, High-Quality Products – Designed for long-term performance

  • Versatile Solutions – Serving homes, businesses, and industries

  • Customer Support – Assisting customers in finding the right filtration system

  • Wide Range of Products – Tailored solutions for specific water concerns

We offer a variety of secure payment options to ensure a seamless and protected checkout experience. The following payment methods are accepted:

  • Credit & Debit Cards: Visa, Mastercard, Discover, Amex and Diners Club

  • Digital Wallets: Apple Pay, Google Pay

  • Online Payment Services: PayPal, Venmo

For your security, we do not accept cash, personal checks, money orders, or any other unsupported payment methods. All transactions must be completed through eBay’s secure payment system to protect both buyers and sellers.

If you experience any issues during the payment process, we recommend checking eBay’s customer support for troubleshooting or reaching out to us for further guidance.

    • Services: We ship via USPS, and UPS to home and business addresses.

    • Signature: No signature required

    To ensure customer satisfaction, we accept returns and exchanges under the following conditions:

    • Returns for refunds are accepted only on new, unused items in original packaging within 30 days of purchase.

    • A 30% restocking fee applies to all approved refunds.

    • Return shipping costs are the buyer’s responsibility.

    • Exchanges are accepted for defective products, product upgrades, or when working directly with us to find the best filtration solution.

    • Non-returnable items: Custom orders, special-order items, opened filter cartridges/membranes (for safety reasons).

    • Return Authorization: All returns must have an RMA number (contact us before sending any returns). Returns received without authorization may not be processed.

    We are committed to providing high-quality water filtration solutions and excellent customer service. If you have any questions about our products, shipping, or return policies, please feel free to contact us.

We're here to help!

Feel free to contact us for any support you may need! You can reach us through the eBay messaging service, by phone, or through our website. We're always happy to assist you!