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North Hertfordshire, England
North Hertfordshire
Your water is safe
We checked 24 things and found 1 worth knowing about
GoodYour water is safe
We checked 24 things and found 1 worth knowing about
GoodTap water in SG3 (North Hertfordshire, North Hertfordshire) is supplied by Affinity Water and scored 8.7 out of 10 for safety based on 24 tested parameters. 1 contaminant exceeded recommended safe levels: Nitrite. Data is from 2,797 samples collected up to 2025-12-18, sourced from Affinity Water via the Stream Water Data Portal.
Last sampled 2025-12-18 · 2,797 samples
Results from drinking water tests in North Hertfordshire.
| Substance | Found | Safe Level | WHO Safe Level | Status |
|---|---|---|---|---|
| Nitrite | 0.606 mg/L | 0.5 mg/L | 3 mg/L | Over limit |
Source: Stream Water Data Portal
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