WSX (Wessex Water Services Ltd)

Report Data Range: For the whole year 2021

Table 1: Quality of water leaving service treatment works – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of works with failures
Nitrite (Total)	A013B	0.1 mg NO2/l	441	0	<0.01	<0.01	0
Totals			441	0

Table 2: Quality of water leaving service treatment works – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of works with failures
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	8,559	0	0	0	0
Total Coliforms (Confirmed)	C001	0 number/100 ml	8,559	0	0	0	0
Totals			17,118	0

Table 3: Quality of water leaving service treatment works – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	8,554	N/A	0	89
Residual Disinfectant – Free	C009	No abnormal change	8,590	N/A	0.29	0.9
Residual Disinfectant – Total	C010	No abnormal change	8,592	N/A	0.34	0.98
Turbidity – Indicator	A002A	1 NTU	8,559	0	<0.083	0.22
Totals			34,295	0

Table 4: Quality of water leaving service reservoirs – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of reservoirs failing standard
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	16,204	1	0	0	1
Total Coliforms (Confirmed)	C001	0 number/100 ml	16,204	4	0	0	0
Totals:			32,408	5

Table 5: Quality of water leaving service reservoirs – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	16,192	N/A	0	>300
Residual Disinfectant – Free	C009	No abnormal change	16,204	N/A	0.13	0.62
Residual Disinfectant – Total	C010	No abnormal change	16,203	N/A	0.19	0.69
Totals:			48,599	0

Table 6: Quality of water leaving bulk supply points – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of supply point with failures
Bromate	F003	10 µg BrO3/l	339	0	<0.4	0.8	0
Totals			339	0

Table 8: Quality of water leaving bulk supply points – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 percentile (representing a minimum)	99 percentile (representing a maximum)
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	441	0	0	0
Totals			441	0

Table 9: Quality of water at consumer’s tap (zones) – European Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 Percentile (representing a minimum)	99 Percentile (representing a maximum)	No. of zones failing standard
1 2-Dichloroethane (Total)	F001	3 µg/l	488	0	<0.4	<0.4	0
Antimony	B008A	5 µg Sb/l	500	0	<0.2	0.2	0
Arsenic (Total)	B001A	10 µg As/l	500	0	<0.2	0.7	0
Benzene (Total)	F002	1 µg/l	488	0	<0.3	<0.3	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	484	0	<0.0005	<0.001215	0
Boron	D005A	1 mg B/l	500	0	<0.03	0.09	0
Bromate	F003	10 µg BrO3/l	144	0	<0.4	3.855	0
Cadmium (Total)	B002	5 µg Cd/l	498	0	<0.1	<0.1	0
Chromium (Total)	B004	50 µg Cr/l	500	0	<1	<1	0
Copper (Total)	A024A	2 mg Cu/l	498	0	<0.01	0.7623	0
Cyanide (Total)	B003	50 µg CN/l	490	0	<1.2	<9	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	3,705	0	0	0	0
Enterococci (Confirmed)	C003	0 number/100 ml	498	0	0	0	0
Fluoride (Total)	A027	1.5 mg F/l	494	0	<0.138	0.651	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	498	2	<0.1	4.816	2
Mercury (Total)	B005	1 µg Hg/l	495	0	<0.05	<0.05	0
Nickel (Total)	B006A	20 µg Ni/l	498	2	<3	5.01	2
Nitrate (Total)	A012	50 mg NO3/l	590	0	<1.63718	41.8184	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	584	0	<0.01	<0.01	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	107	0	0	0.01176	0
Pesticides Aldrin	P002	0.03 µg/l	480	0	<0.005	<0.008	0
Pesticides Atrazine	P004	0.1 µg/l	16	0	<0.009	<0.009	0
Pesticides Bentazone	P006	0.1 µg/l	16	0	<0.003	0.008	0
Pesticides Clopyralid	P018	0.1 µg/l	8	0	<0.027	<0.027	0
Pesticides Dieldrin	P028	0.03 µg/l	475	0	<0.005	<0.009	0
Pesticides Heptachlor	P043	0.03 µg/l	480	0	<0.004	<0.006	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	480	0	<0.011	<0.014	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	12	0	<0.006	<0.006	0
Pesticides Metaldehyde	P226	0.1 µg/l	46	0	<0.01	<0.01	0
Pesticides Metazachlor	P203	0.1 µg/l	8	0	<0.01	<0.01	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	457	0	0	0.00551	0
Selenium (Total)	B009	10 µg Se/l	495	0	<0.5	1.204	0
Trichloroethene & Tetrachloroethene – Sum Of 2 Substances (Total by Calculation)	D009B	10 µg/l	492	0	<0.5	<0.5	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	492	0	2.8465	42.8961	0
Totals			16,516	4

Table 10: Quality of water at consumer’s tap (zones) – National Standards

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests Failed	1 percentile (representing a minimum)	99 percentile (representing a maximum)	No. of zones failing standard
Aluminium (Total)	A021	200 µg Al/l	1,382	0	<10	20	0
Colour	A001	20 mg/l Pt/Co	1,527	0	<0.6	<2.9	0
Iron (Total)	A022	200 µg Fe/l	1,382	1	<20	50	1
Manganese (Total)	A023	50 µg Mn/l	1,382	0	<1	5	0
Odour	A003	0 Dilution number at 25°C	1,438	0	0	0	0
Sodium (Total)	A009	200 mg Na/l	499	0	5.8	52	0
Taste (Taste Quant)	A004	0 Dilution number at 25°C	1,419	3	0	0	3
Tetrachloromethane (Total)	D008	3 µg/l	492	0	<0.23	0.2784	0
Turbidity	A002	4 NTU	1,529	0	<0.083	0.237	0
Totals			11,050	4

Table 11: Quality of water at consumer’s tap (zones) – Additional Monitoring Requirements

Parameter Name	Parameter Code	Prescribed Concentration or Value	Total Number of Tests	Tests exceeding specification	1 percentile (representing a minimum)	99 percentile (representing a maximum)
Ammonium (Total)	A014	0.5 mg NH4/l	584	0	<0.026924	0.0385
Chloride	D002A	250 mg Cl/l	500	0	12	50.97
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	54	0	0	0
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	3,705	2	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	1,525	N/A	0	64
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	1,529	0	112.158	699.178
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	1,529	0	7.2	8.2
Residual Disinfectant – Free	C009	No abnormal change	3,725	N/A	0.07	0.61
Residual Disinfectant – Total	C010	No abnormal change	3,725	N/A	0.14	0.67
Sulphate	A007	250 mg SO4/l	500	0	11	104.96
Total Organic Carbon	A017	No abnormal change	495	N/A	<0.45	2.7
Totals			17,871	2