Cornwall, England
Cornwall
Your water is safe
We checked 16 things and found nothing to worry about
ExcellentYour water is safe
We checked 16 things and found nothing to worry about
ExcellentBased on drinking water tests, your water in TR3 (Cornwall) is supplied by South West Water. Based on the latest data (last sampled 2024-12-17), 16 things were tested with 0 exceeding recommended levels. The overall water quality score for TR3 is 9.6/10.
Last sampled 2024-12-17 · 534 samples
This data is 15 months old. Newer data may be available soon.
Results from drinking water tests in Cornwall.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Copper | 0.0025 mg/L | 2 mg/L | 2 mg/L | Safe |
| Lead | 0.0001 mg/L | 0.01 mg/L | 0.01 mg/L | Safe |
| Nickel | 0.0033 mg/L | 0.02 mg/L | 0.07 mg/L | Safe |
| Selenium | 0.0012 mg/L | 0.04 mg/L | 0.04 mg/L | Safe |
| Bromate | 0.0001 mg/L | 0.01 mg/L | 0.01 mg/L | Safe |
| Antimony | 0.0001 mg/L | 0.005 mg/L | 0.02 mg/L | Safe |
Source: Stream Water Data Portal
General-purpose filters for common UK tap water concerns.

Our pick for TR3
BRITA Marella XL + MAXTRA PRO
Jug Filter · TUV SUD
A solid all-round filter for TR3. Removes Chlorine, Lead, Copper and more. No installation needed.
£25
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
Rivers, groundwater and reservoirs near TR3. This is environmental monitoring — not your tap water.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| pH | 7.7 pH | — | — | Safe |
| Temperature | 7.5 °C | — | — | Safe |
| Ammonia | 0.073 mg/L | 0.5 mg/L | — | Safe |
| Nitrate | 5.57 mg/L | 50 mg/L | 50 mg/L | Safe |
| Nitrite | 0.0152 mg/L | 0.5 mg/L | 3 mg/L | Safe |
| Phosphate | 0.562 mg/L | — | — | Safe |
Source: Environment Agency
We'll email you when water quality data changes for TR3.