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Westminster, England
Your water in SW1V
Westminster
Your water is safe
We checked 22 things and found 2 worth knowing about
GoodYour water is safe
We checked 22 things and found 2 worth knowing about
GoodH
Water hardness: 262 mg/L (very hard)
Hard water — may cause limescale buildup in kettles and pipes
Hard water is costing your home money
Your water is very hard (262 mg/L) — find out if a softener is worth it
Tap water in SW1V (Westminster, Westminster) is supplied by Thames Water and scored 8.1 out of 10 for safety based on 22 tested parameters. 2 contaminants exceeded recommended safe levels: Nitrite, Lead. Data is from 74 samples collected up to 2025-12-31, sourced from Thames Water via the Stream Water Data Portal.
Drinking water testsHow we score
Last sampled 2025-12-31 · 74 samples
What’s in your tap water
Results from drinking water tests in Westminster.
What removes these from your water
2 contaminants flagged in SW1V. These filters are matched to what was found in your water.
Our pick for SW1V
Doulton HIP Ultracarb
Under-Sink Filter · NSF/ANSI 42, NSF/ANSI 53
The Doulton HIP Ultracarb is certified to remove Lead, which was flagged in SW1V. Fits under your kitchen sink for filtered water on tap.
Removes from your water
Lead
Check price & reviews
£120
4.6/5
2 more options
Recommendations matched to your area's water data, not sponsorship. We may earn a commission at no extra cost to you. Affiliate disclosure · Full filter guide
Hard water is costing your home money
Limescale reduces boiler efficiency and shortens appliance life. Based on your water hardness (262 mg/L — very hard), a softener could save you £200+/year.
Get a free assessment — we'll tell you if it's worth it and connect you with trusted local installers.
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Shower filters
Remove chlorine for better skin and hair
Test your water
Confirm exactly what's in your pipes
Related guides
Learn more about the water quality issues relevant to this area.
Is UK Tap Water Safe?
Everything you need to know about tap water safety in the UK
Lead Pipes in the UK
How to check for lead pipes and reduce exposure
Water Hardness Checker
Check your water hardness and what it means for your home
Water Filter Recommendations
Find the right filter for your water quality issues
Environmental water nearby
Rivers, groundwater and reservoirs near SW1V. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Turbidity | 3.9 NTU | 4 NTU | 4 NTU | Watch |
Source: Environment Agency
Learn more
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