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Fetching the latest data for this area
West Northamptonshire, England
West Northamptonshire
Your water is safe
We checked 10 things and found nothing to worry about
ExcellentYour water is safe
We checked 10 things and found nothing to worry about
ExcellentWater hardness: 236 mg/L (hard)
Hard water — may cause limescale buildup in kettles and pipes
Hard water is costing your home money
Your water is hard (236 mg/L) — find out if a softener is worth it
Tap water in OX17 (West Northamptonshire, West Northamptonshire) is supplied by Anglian Water and scored 9.2 out of 10 for safety based on 10 tested parameters. No contaminants exceeded recommended safe levels. Data is from 221 samples collected up to 2024-12-05, sourced from Anglian Water via the Stream Water Data Portal.
Last sampled 2024-12-05 · 221 samples
This data is 17 months old. Newer data may be available soon.
Results from drinking water tests in West Northamptonshire.
General-purpose filters for common UK tap water concerns.

Our pick for OX17
BRITA Marella XL + MAXTRA PRO
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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
Limescale reduces boiler efficiency and shortens appliance life. Based on your water hardness (236 mg/L — 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
Learn more about the water quality issues relevant to this area.
Rivers, groundwater and reservoirs near OX17. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.9 pH | — | — | Safe |
| Temperature | 6 °C | — | — | Safe |
| Ammonia | 0.002 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 9.85 mg/L | 50 mg/L | 50 mg/L | Safe |
| Phosphate | 0.404 mg/L | — | — | Safe |
| Dissolved Oxygen | 27 mg/L | — | — | Safe |
Source: Environment Agency
We'll email you when water quality data changes for OX17.