South Oxfordshire, England
Your water in RG4
South Oxfordshire, South Oxfordshire
Your water is mostly fine
We checked 9 things and found 3 worth knowing about
Fair9
Tests run
3
To watch
Thames Water
Your water company
Apr 2026
Last checked
Based on government water tests, your water in RG4 (South Oxfordshire) is supplied by Thames Water. Based on the latest data (last sampled 2003-11-14), 9 parameters were tested with 3 exceeding recommended levels. The overall water quality score for RG4 is 6.6/10.
What we found
Here's what government tests found in water near you.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Nickel Source: Environment Agency | 0.02 mg/L | 0.02 mg/L | 0.07 mg/L | Watch |
| Manganese Source: Environment Agency | 2.05 mg/L | 0.05 mg/L | 0.08 mg/L | Over limit |
| Iron Source: Environment Agency | 1.87 mg/L | 0.2 mg/L | 0.3 mg/L | Over limit |
| pH Source: Environment Agency | 7.12 pH | — | — | Safe |
| Conductivity Source: Environment Agency | 2130 µS/cm | — | — | Safe |
| Zinc Source: Environment Agency | 0.006 mg/L | — | — | Safe |
| Chromium Source: Environment Agency | 0.002 mg/L | 0.05 mg/L | 0.05 mg/L | Safe |
| Copper Source: Environment Agency | 0.005 mg/L | 2 mg/L | 2 mg/L | Safe |
| Nitrate Source: Environment Agency | 0.8 mg/L | 50 mg/L | 50 mg/L | Safe |
How it's changed
RG4quality score, 2020–2026
Water quality has improved over the past 6 years.
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Filters for your area
Picked to match what we found in your water
BRITA
MAXTRA PRO All-in-1
Filter Jug
Removes
- Chlorine
- Lead
- Copper
+1 more
ZeroWater
Ready-Pour 10-Cup
Filter Jug
Removes
- Pfas
- Lead
- Chlorine
+2 more
Osmio
Zero Installation Reverse Osmosis
Countertop
Removes
- Pfas
- Lead
- Nitrate
+4 more
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