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The water fittings regulations in England, Wales and Northern Ireland, byelaws in Scotland, categorise the risk to health posed by potential contaminates by fluid categories. There are five in total, the lowest being 1 (wholesome water) and the highest 5 (a serious health hazard).
Fluid category 4 is something which poses a significant health hazard. Examples include carcinogens, pesticides and environmental organisms of potential health significance.
Uncontrolled if downloaded. This is informative, non-statutory guidance and intended for general guidance purposes only; it is subject to change.
Compliance with this information should not be relied upon as guaranteeing no enforcement action will be taken by water undertakers. Water Regs UK accepts no liability for loss, indirect or consequential loss arising from or in connection with this guidance document.