Under-sink Filters
Under-sink Filters | Water Purification | Plumbing | Lancing
Imagine turning on the tap in your Lancing home and knowing that every glass is crisp, clean and tasted exactly as nature intended. HEP’s specialist plumbers install compact under-sink filter systems that strip out chlorine, heavy metals and micro-sediments while keeping the healthy minerals your body loves. No bulky countertop units, no bottled-water guilt—just a discreet cartridge tucked neatly beneath the kitchen cabinet, delivering litres of pure refreshment on demand.
Our local team handles everything from tailored product advice to flawless installation and scheduled cartridge changes, so you never have to worry about flow rate, fittings or future leaks. Whether you’re renovating a stylish coastal kitchen or upgrading a busy family home, we make water purification effortless and affordable. Ready for a sip? Get in touch and see how quick it is to transform your everyday water into something extraordinary.
FAQs
What contaminants do under-sink filters remove from Lancing tap water?
Most modern under-sink systems use a combination of sediment, activated carbon and, in many models, a membrane stage. Together they can reduce chlorine taste and odour, limescale-forming hardness minerals, lead from older pipework, micro-plastics, pesticides, volatile organic compounds (VOCs) and, with reverse-osmosis units, up to 99 % of dissolved solids. Southern Water’s annual quality report for Lancing shows compliance with UK standards, but customers regularly ask for extra protection against chlorine and hardness to improve taste and kettle life – precisely what under-sink filters deliver.
How is an under-sink water filter installed and will it affect my existing plumbing?
The filter housing is fixed to the cabinet wall under your kitchen sink, and a dedicated food-grade tube is tee-connected to the cold-water feed. The purified water can be routed to a separate drinking-water tap or, with a three-way mixer tap, to your main kitchen faucet. Installation usually takes 60-90 minutes and requires only standard plumbing tools. Your existing pipework remains intact; the installer simply adds an isolating valve so you can shut off water to the filter without turning off the whole supply.
How often do the filter cartridges need replacing and how can I tell it’s time?
Change intervals depend on water quality and usage, but as a rule of thumb: sediment filters every 6 months, carbon blocks every 6–12 months and RO membranes every 24–36 months. Most filters are rated for a specific number of litres (e.g., 5,700 L) – whichever comes first, time or volume. Indicators include reduced flow, a return of chlorine taste, or a built-in colour/LED gauge turning red. We offer an optional annual service reminder, and replacement cartridges are stocked locally in Lancing for same-day collection or delivery.
Does an under-sink system reduce water pressure at my kitchen tap?
Standard single-or dual-stage carbon filters cause only a minor pressure drop (1–2 psi) that you are unlikely to notice. Reverse-osmosis units feed a separate faucet and include a pressurised storage tank to maintain acceptable flow; they do not affect the pressure of your normal hot and cold mixer tap. If you choose a three-way tap, the filtered line is sized to deliver approximately 1.5 L per minute – ideal for filling bottles and saucepans without wasting water.
What certifications should I look for when choosing a purification unit?
In the UK market the gold standards are WRAS (Water Regulations Approval Scheme) for plumbing compliance and NSF/ANSI 42, 53 or 58 for performance. NSF 42 covers aesthetic reduction (chlorine, taste, odour), NSF 53 covers health-related contaminants (lead, cysts, VOCs) and NSF 58 applies to reverse-osmosis. A genuine certificate means the filter has been independently tested to meet its stated claims, giving you confidence that you’re actually getting cleaner water.
How much does a professional under-sink filter installation cost in Lancing?
Prices vary by system complexity. A two-stage carbon filter, including parts, typically costs £145–£195 installed. Reverse-osmosis packages with storage tank and separate tap start around £375. If you opt for a designer three-way tap the overall package can reach £550–£650. These figures include a 12-month parts and labour warranty, first set of cartridges and full commissioning. We offer free, no-obligation site surveys in BN15 and neighbouring postcodes to give you an exact quote before any work begins.