Scotland is known for its high-quality tap water, but many homeowners are still opting to install under-sink mains cold water filters for an extra layer of purity. But is it worth it? And how does Scottish tap water compare to a filtered water system?
At Green Goat Renewables, we install under-sink water filters across Glasgow, Ayrshire, Newton Mearns, Giffnock, and Paisley. In this guide, we’ll break down:
✔ How Scottish tap water compares to filtered water
✔ Advantages & disadvantages of under-sink filters
✔ Whether installing a filter is the right choice for your home
💧 How Good is Scottish Tap Water?
Scotland’s water is among the best in the world, supplied by Scottish Water and sourced from rivers, lochs, and reservoirs. It goes through rigorous filtration and treatment before reaching your tap.
✅ Soft Water: Scotland’s water is naturally softer than in England, meaning less limescale build-up.
✅ Low Chlorine Levels: Chlorine is added for disinfection but at much lower levels than in other parts of the UK.
✅ No Fluoride: Unlike in England, Scottish tap water does not contain added fluoride.
While Scottish water is safe to drink, some homeowners still prefer an extra level of filtration to remove chlorine, sediment, and microplastics.
🔍 What is an Under-Sink Mains Cold Water Filter?
An under-sink water filter is installed directly into your cold water supply, filtering water before it reaches your tap. Unlike jug filters or countertop systems, under-sink filters are hidden out of sight and provide on-demand filtered water without refilling.
💡 Installation takes around 1-2 hours and is a low-maintenance way to improve your water quality.
✅ Advantages of Installing an Under-Sink Water Filter
1️⃣ Improved Taste & Smell
Even though Scottish tap water is high quality, some people notice a chlorine taste or odour. A filter removes chlorine, making water taste fresher.
2️⃣ Reduces Sediment & Impurities
✅ Removes small amounts of sand, dirt, and rust from old pipework
✅ Filters out microplastics, which may be present in tap water
✅ Some filters remove heavy metals like lead
3️⃣ Saves Money vs. Bottled Water
If you buy bottled water, an under-sink filter will pay for itself within months. A good filter costs around £100-£150, while bottled water can cost hundreds per year.
4️⃣ Environmentally Friendly
By filtering tap water at home, you reduce plastic waste from bottled water.
5️⃣ No Need for a Separate Tap
Some modern under-sink filters connect directly to your existing tap, meaning no extra fittings are needed.
⚠️ Disadvantages of an Under-Sink Water Filter
1️⃣ Regular Filter Changes
Most filters need replacing every 6-12 months to maintain efficiency. Neglecting this can reduce performance and allow bacteria growth.
2️⃣ Doesn’t Remove Everything
While filters remove chlorine and sediment, they do not soften water or eliminate bacteria.
3️⃣ Initial Installation Cost
Although affordable long-term, under-sink filters require professional installation to ensure correct fitting and prevent leaks.
💡 At Green Goat Renewables, we professionally install under-sink filters across Glasgow & Ayrshire—giving you a hassle-free setup with no leaks.
🔧 Should You Install an Under-Sink Water Filter?
🚰 Best for you if:
✔ You want fresher, better-tasting water
✔ You buy a lot of bottled water and want to save money
✔ Your home has older pipes that may release minor sediment
🚱 Not necessary if:
❌ You are happy with Scottish tap water as it is
❌ You want to filter out bacteria (a UV or reverse osmosis system is needed for that)
❌ You don’t want to replace filters regularly
💦 Professional Under-Sink Water Filter Installation in Glasgow & Ayrshire
At Green Goat Renewables, we offer:
✅ Professional installation with no leaks
✅ High-quality carbon filters for chlorine and sediment removal
✅ Servicing & filter replacements to keep your system running smoothly
📞 Want better water? Call us today for a free quote!
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