Serving 3.6 million people across North London, Hertfordshire, Essex, Surrey, and Bedfordshire
Readings for the Watford (AF046) supply zone
Hardness at 343 mg/l. Water above 200 mg/l is classified as very hard. Hard water causes limescale buildup in kettles and appliances, reduces soap lathering, and can leave hair feeling dry or stiff.
Nitrate measured at 29.1 mg/l (UK limit: 50 mg/l). Higher nitrate levels are common in agricultural areas due to fertiliser runoff.
Note: These readings are from a representative zone in the Affinity Water supply area. Water quality varies between neighbourhoods and supply zones. Enter your postcode below for exact readings at your address.
Water quality varies by area. Get precise readings for your address in the Affinity Water region.
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