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King's Lynn and West Norfolk · King's Lynn and West Norfolk

Anglian Water

Water safety

Water safety
Parameter	Unfiltered tap water	Allowed range	Filtered
Free Chlorinemg CL2/l	0.47	0.2 – 1	0.009
Total Chlorinemg CL2/l	0.59	No limit	0.12

General

General
Parameter	Unfiltered tap water	Allowed range	Filtered
Hardnessmg CaCO3/l	303estimated	80 – 459	303
pH	7.43	6.5 – 9.5	7.43
TurbidityNTU	0.22	≤ 4	0.022
ColorColor Units	1.43	≤ 15	1.43
OdorTON	0	≤ 3	0

Pathogens

Pathogens
Parameter	Unfiltered tap water	Allowed range	Filtered
eColiUFC/100ml	0	≤ 0	0
BacteriasNMP/100ml	0	≤ 0	0
EnterococcusUFC/100ml	0	≤ 0	0

Chemical parameters

Chemical parameters
Parameter	Unfiltered tap water	Allowed range	Filtered
Fluoridemg F/l	0.11	≤ 1.5	0.033
Mercuryμg Hg/l	Not reported	≤ 1	—
Nitritesmg NO2/l	0.03	≤ 0.5	0.012
Nitratesmg NO3/l	32.6	≤ 50	9.79

Metals

Metals
Parameter	Unfiltered tap water	Allowed range	Filtered
Aluminiumμg/l	12	≤ 200	12
Antimonyμg/l	0.086	≤ 5	0.086
Arsenicμg/l	0.35	≤ 10	0.17
Cadmiumμg/l	0.02	≤ 5	0.02
Chromiumμg/l	0.76	≤ 50	0.76
Copperμg/l	50.6	≤ 2,000	2.53
Ironμg/l	23.2	≤ 200	23.2
Manganeseμg/l	3.03	≤ 50	3.03
Leadμg/l	0.26	≤ 10	0.013
Nickelμg/l	1.53	≤ 20	1.53
Seleniumμg/l	0.72	≤ 10	0.72
Sodiummg/l	17.9	≤ 200	17.9

Chlorine by-products

Chlorine by-products
Parameter	Unfiltered tap water	Allowed range	Filtered
Total Trihalomethanesμg/l	13.6	≤ 100	0.68

Perfluorinated chemicals

Perfluorinated chemicals
Parameter	Unfiltered tap water	Allowed range	Filtered
Total PFASug/L	Not reported	≤ 0.1	—
PFAS 4ng/l	Not reported	No limit	—
PFAS 21ng/l	Not reported	No limit	—

Other

Other
Parameter	Unfiltered tap water	Allowed range	Filtered
Ammoniamg/l	0.14	No limit	0.042

Data collected from the water company for your area. Quality ranges are based on WHO guidelines and the UK drinking water regulations.

3098 of 3098 tests within UK limits