SWB (South West and Bournemouth Water)

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	1,199	0	<0.015	0.038	0
Totals			1,199	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	8,466	0	0	0	0
Total Coliforms (Confirmed)	C001	0 number/100 ml	8,466	7	0	0	0
Totals			16,932	7

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	8,467	N/A	0	2
Residual Disinfectant – Free	C009	No abnormal change	8,473	N/A	0.03	1.15
Residual Disinfectant – Total	C010	No abnormal change	8,473	N/A	0.23	1.2
Turbidity – Indicator	A002A	1 NTU	8,464	0	<0.07	0.25
Totals			33,877	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	14,168	1	0	0	1
Total Coliforms (Confirmed)	C001	0 number/100 ml	14,168	7	0	0	0
Totals:			28,336	8

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	14,171	N/A	0	49
Residual Disinfectant – Free	C009	No abnormal change	14,172	N/A	0.02	0.9
Residual Disinfectant – Total	C010	No abnormal change	14,172	N/A	0.12	0.94
Totals:			42,515	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
Boron	D005A	1 mg B/l	376	0	0.0014179	0.027215	0
Cyanide (Total)	B003	50 µg CN/l	330	0	<2.7	7.187	0
Fluoride (Total)	A027	1.5 mg F/l	376	0	<0.011	0.20646	0
Mercury (Total)	B005	1 µg Hg/l	376	0	<0.04	0.05167	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	430	0	0	0.034	0
Pesticides 2 4-D	P020	0.1 µg/l	388	0	<0.01	<0.01	0
Pesticides 2 4-DB	P082	0.1 µg/l	388	0	<0.007	<0.014	0
Pesticides Asulam	P133	0.1 µg/l	388	0	<0.012	<0.02664	0
Pesticides Atrazine	P004	0.1 µg/l	386	0	<0.007	0.034	0
Pesticides Azoxystrobin	P227	0.1 µg/l	386	0	<0.005	<0.005	0
Pesticides Bentazone	P006	0.1 µg/l	388	0	<0.002	<0.007	0
Pesticides Boscalid	P231	0.1 µg/l	386	0	<0.007	<0.007	0
Pesticides Bromoxynil	P008	0.1 µg/l	388	0	<0.006	<0.012	0
Pesticides Carbendazim (Total)	150	0.1 µg/l	386	0	<0.003	<0.003	0
Pesticides Chlorpyrifos (Chlorpyriphos Ethyl)	P017	0.1 µg/l	382	0	<0.002	<0.00217	0
Pesticides Chlortoluron	P014	0.1 µg/l	386	0	<0.005	<0.005	0
Pesticides Clopyralid	P018	0.1 µg/l	388	0	<0.009	<0.01998	0
Pesticides Cyprodinil	P228	0.1 µg/l	381	0	<0.01	<0.01018	0
Pesticides Cyromazine	P223	0.1 µg/l	386	0	<0.012	<0.012	0
Pesticides Diazinon	P024	0.1 µg/l	395	0	<0.007	<0.00704	0
Pesticides Dicamba	P025	0.1 µg/l	388	0	<0.01	<0.02	0
Pesticides Dichlobenil	P098	0.1 µg/l	371	0	<0.003	<0.00328	0
Pesticides Dichlorprop	P026	0.1 µg/l	388	0	<0.009	<0.018	0
Pesticides Dieldrin	P028	0.03 µg/l	396	0	<0.004	<0.00403	0
Pesticides Diflufenican	P157	0.1 µg/l	381	0	<0.003	<0.00318	0
Pesticides Diuron	P032	0.1 µg/l	386	0	<0.007	<0.007	0
Pesticides Epoxyconazole	P217	0.1 µg/l	384	0	<0.016	<0.0163	0
Pesticides Fenpropimorph	P037	0.1 µg/l	392	0	<0.003	<0.00307	0
Pesticides Fluroxypyr	P040	0.1 µg/l	388	0	<0.007	<0.014	0
Pesticides Gamma-HCH (Lindane)	P041	0.1 µg/l	385	0	<0.011	<0.01156	0
Pesticides Ioxynil	P049	0.1 µg/l	388	0	<0.004	<0.008	0
Pesticides Isoproturon	P048	0.1 µg/l	386	0	<0.004	<0.004	0
Pesticides Linuron	P051	0.1 µg/l	386	0	<0.012	<0.012	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	387	0	<0.006	<0.01212	0
Pesticides MCPB	P055	0.1 µg/l	388	0	<0.008	<0.008	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	388	0	<0.007	<0.014	0
Pesticides Metaldehyde	P226	0.1 µg/l	295	0	<0.001	0.003	0
Pesticides Metamitron	P194	0.1 µg/l	381	0	<0.01	<0.01	0
Pesticides Pendimethalin	P118	0.1 µg/l	395	0	<0.003	<0.00304	0
Pesticides Pentachlorophenol	P060	0.1 µg/l	388	0	<0.007	<0.007	0
Pesticides Picloram (Total)	P122	0.1 µg/l	388	0	<0.004	<0.01699	0
Pesticides Propamocarb	P238	0.1 µg/l	381	0	<0.009	<0.009	0
Pesticides Propyzamide	P071	0.1 µg/l	386	0	<0.005	<0.005	0
Pesticides Quinmerac	P224	0.1 µg/l	388	0	<0.002	<0.025	0
Pesticides Simazine	P073	0.1 µg/l	386	0	<0.007	<0.007	0
Pesticides Tebuconazole	P177	0.1 µg/l	382	0	<0.007	<0.007	0
Pesticides Triclopyr	P131	0.1 µg/l	388	0	<0.004	<0.00844	0
Totals			18,030	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)
Chloride	D002A	250 mg Cl/l	375	0	7.632	40.24
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	2,785	0	0	0
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	2,256	0	75.071	512.22
Sulphate	A007	250 mg SO4/l	374	0	<2.4	45.55
Total Organic Carbon	A017	No abnormal change	372	N/A	<0.42	5.5603
Totals			6,162	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 supply point with failures
1 2-Dichloroethane (Total)	F001	3 µg/l	407	0	<0.2	<0.2	0
Antimony	B008A	5 µg Sb/l	406	0	<0.05	0.26	0
Arsenic (Total)	B001A	10 µg As/l	406	0	<0.62	0.8679	0
Benzene (Total)	F002	1 µg/l	407	0	<0.2	<0.2	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	458	1	<0.0005	<0.0025	1
Bromate	F003	10 µg BrO3/l	401	0	<0.15	3.4	0
Cadmium (Total)	B002	5 µg Cd/l	406	0	<0.06	0.07751	0
Chromium (Total)	B004	50 µg Cr/l	406	0	<0.8	<0.89207	0
Copper (Total)	A024A	2 mg Cu/l	394	0	<0.0019	0.63905	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	5,638	0	0	0	0
Enterococci (Confirmed)	C003	0 number/100 ml	407	0	0	0	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	394	1	<0.08	2.582	1
Nickel (Total)	B006A	20 µg Ni/l	394	1	<3.3	7.179	1
Nitrate (Total)	A012	50 mg NO3/l	636	0	<1.6	34.3019	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	636	0	<0.015	0.20678	0
Nitrite/Nitrate formula	A013C	1 mg/l	636	0	0	0.6863	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	407	0	0	0.007	0
Selenium (Total)	B009	10 µg Se/l	305	0	<0.52	1	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	407	0	0	0.6	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	407	0	1.88	63.972	0
Totals			14,058	3

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	2,048	1	<4.9	38.953	1
Colour	A001	20 mg/l Pt/Co	2,049	0	<0.8	3.4	0
Iron (Total)	A022	200 µg Fe/l	2,047	1	<7.6	70.848	1
Manganese (Total)	A023	50 µg Mn/l	2,048	0	<0.3	6.4402	0
Odour	A003	0 Dilution number at 25°C	2,061	0	0	0	0
Sodium (Total)	A009	200 mg Na/l	406	0	4.521	32	0
Taste (Taste Quant)	A004	0 Dilution number at 25°C	2,060	0	0	0	0
Tetrachloromethane (Total)	D008	3 µg/l	407	0	<0.2	<0.2	0
Turbidity	A002	4 NTU	2,050	0	<0.07	0.28	0
Totals			15,176	2

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	2,041	0	<0.003	0.14
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	5,638	9	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	5,639	N/A	0	23
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	372	0	386.92	562.54
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	2,048	0	7.2	8.8
Residual Disinfectant – Free	C009	No abnormal change	5,640	N/A	0.02	0.84
Residual Disinfectant – Total	C010	No abnormal change	5,640	N/A	0.1141	0.9059
Totals			27,018	9