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Bournemouth, Christchurch and Poole · Bournemouth, Christchurch and Poole

South West Water

Water safety

Water safety
Parameter	Unfiltered tap water	Allowed range	Filtered
Free Chlorinemg CL2/l	0.032 (Outside the range)	0.2 – 1	0.001
Total Chlorinemg CL2/l	0.17	No limit	0.033

General
Parameter	Unfiltered tap water	Allowed range	Filtered
Hardnessmg CaCO3/l	231.2estimated	80 – 459	231.2
pH	7.83	6.5 – 9.5	7.83
TurbidityNTU	0.11	≤ 4	0.011
ColorColor Units	2.46	≤ 15	2.46
ConductivityμS / cm	465.8	≤ 2,500	465.8
TDSmg/l	298.1estimated	0 – 1,199	298.1
OdorTON	0.004	≤ 3	0.004

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
Parameter	Unfiltered tap water	Allowed range	Filtered
Mercuryμg Hg/l	Not reported	≤ 1	—
Nitritesmg NO2/l	Not reported	≤ 0.5	—
Nitratesmg NO3/l	23.3	≤ 50	6.98

Metals
Parameter	Unfiltered tap water	Allowed range	Filtered
Aluminiumμg/l	25.8	≤ 200	25.8
Antimonyμg/l	0.11	≤ 5	0.11
Arsenicμg/l	0.62	≤ 10	0.31
Cadmiumμg/l	0.06	≤ 5	0.06
Chromiumμg/l	0.8	≤ 50	0.8
Copperμg/l	41.5	≤ 2,000	2.08
Ironμg/l	11.1	≤ 200	11.1
Manganeseμg/l	0.69	≤ 50	0.69
Leadμg/l	0.24	≤ 10	0.012
Nickelμg/l	3.3	≤ 20	3.3
Seleniumμg/l	1.2	≤ 10	1.2
Sodiummg/l	13.1	≤ 200	13.1

Chlorine by-products
Parameter	Unfiltered tap water	Allowed range	Filtered
Total Trichloroethyleneμg/l	0	≤ 10	0
Total Trihalomethanesμg/l	24.1	≤ 100	1.2

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
Parameter	Unfiltered tap water	Allowed range	Filtered
Ammoniamg/l	0.046	No limit	0.014

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

4599 of 4600 tests within UK limits