SRN (Southern 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	633	0	<0.002	0.00498	0
Totals			633	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	12,600	4	0	0	4
Total Coliforms (Confirmed)	C001	0 number/100 ml	12,600	6	0	0	6
Totals			25,200	10

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	12,621	N/A	0	4
Residual Disinfectant – Free	C009	No abnormal change	12,650	N/A	0.24	1.05
Residual Disinfectant – Total	C010	No abnormal change	12,650	N/A	0.32	1.15
Turbidity – Indicator	A002A	1 NTU	12,609	1	<0.15	0.393
Totals			50,530	1

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	10,533	2	0	0	2
Total Coliforms (Confirmed)	C001	0 number/100 ml	10,533	12	0	0	0
Totals:			21,066	14

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	10,565	N/A	0	14
Residual Disinfectant – Free	C009	No abnormal change	10,568	N/A	0.11	0.81
Residual Disinfectant – Total	C010	No abnormal change	10,568	N/A	0.1869	0.87
Totals:			31,701	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
1 2-Dichloroethane (Total)	F001	3 µg/l	633	0	<0.16	<0.16	0
Benzene (Total)	F002	1 µg/l	633	0	<0.06	<0.09	0
Boron	D005A	1 mg B/l	633	0	0.018946	0.078414	0
Bromate	F003	10 µg BrO3/l	633	0	<0.15	1.8	0
Cyanide (Total)	B003	50 µg CN/l	633	0	<1.2	<5.5	0
Fluoride (Total)	A027	1.5 mg F/l	633	0	0.06	0.2266	0
Mercury (Total)	B005	1 µg Hg/l	633	0	<0.04	<0.06	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	636	0	0	0.088	0
Pesticides 2 4-D	P020	0.1 µg/l	264	0	<0.012	<0.012	0
Pesticides Aldrin	P002	0.03 µg/l	636	0	<0.005	<0.008	0
Pesticides Atrazine	P004	0.1 µg/l	531	0	<0.004	0.022	0
Pesticides Atrazine Desisopropyl	P212	0.1 µg/l	114	0	<0.007	0.05295	0
Pesticides Benazolin (Total)	P138	0.1 µg/l	64	0	<0.01	0.011	0
Pesticides Bentazone	P006	0.1 µg/l	520	0	<0.002	0.06658	0
Pesticides Boscalid	P231	0.1 µg/l	101	0	<0.009	<0.011	0
Pesticides Bromacil	P086	0.1 µg/l	264	0	<0.007	0.02145	0
Pesticides Carbendazim (Total)	P150	0.1 µg/l	509	0	<0.003	<0.003	0
Pesticides Carbetamide	P010	0.1 µg/l	121	0	<0.008	<0.01468	0
Pesticides Chlormequat	P163	0.1 µg/l	209	0	<0.003	<0.0138	0
Pesticides Chlorothalonil	P015	0.1 µg/l	108	0	<0.006	<0.014	0
Pesticides Chlorpyrifos (Chlorpyriphos Ethyl)	P017	0.1 µg/l	48	0	<0.016	<0.016	0
Pesticides Chlortoluron	P014	0.1 µg/l	290	0	<0.006	<0.00952	0
Pesticides Clopyralid	P018	0.1 µg/l	169	0	<0.011	0.0414	0
Pesticides Cyanazine	P092	0.1 µg/l	392	0	<0.006	<0.014	0
Pesticides Cypermethrin	P094	0.1 µg/l	84	0	<0.005	<0.008	0
Pesticides Cyproconazole	P207	0.1 µg/l	133	0	<0.007	<0.008	0
Pesticides Desethylatrazine	P182	0.1 µg/l	113	0	<0.005	0.03186	0
Pesticides Diazinon	P024	0.1 µg/l	176	0	<0.006	<0.01091	0
Pesticides Dicamba	P025	0.1 µg/l	209	0	<0.012	<0.014	0
Pesticides Dichlorprop	P026	0.1 µg/l	108	0	<0.011	<0.017	0
Pesticides Dieldrin	P028	0.03 µg/l	636	0	<0.005	<0.009	0
Pesticides Diflufenican	P157	0.1 µg/l	100	0	<0.007	<0.009	0
Pesticides Diuron	P032	0.1 µg/l	241	0	<0.009	<0.01	0
Pesticides Epoxyconazole	P217	0.1 µg/l	356	0	<0.005	<0.006	0
Pesticides Fenpropimorph	P037	0.1 µg/l	377	0	<0.004	<0.004	0
Pesticides Flufenacet	P230	0.1 µg/l	149	0	<0.008	0.0245	0
Pesticides Fluroxypyr	P040	0.1 µg/l	164	0	<0.009	<0.01235	0
Pesticides Flusilazole	P159	0.1 µg/l	33	0	<0.006	<0.007	0
Pesticides Flutriafol	P039	0.1 µg/l	377	0	<0.005	0.01322	0
Pesticides Fluxapyroxad	P274	0.1 µg/l	117	0	<0.009	<0.011	0
Pesticides Gamma-HCH (Lindane)	P041	0.1 µg/l	16	0	<0.005	<0.006	0
Pesticides Glyphosate	P042	0.1 µg/l	360	0	<0.005	<0.025	0
Pesticides Heptachlor	P043	0.03 µg/l	636	0	<0.004	<0.005	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	636	0	<0.005	<0.007	0
Pesticides Isoproturon	P048	0.1 µg/l	273	0	<0.005	<0.01668	0
Pesticides Lambda-Cyhalothrin	P216	0.1 µg/l	44	0	<0.006	<0.006	0
Pesticides Linuron	P051	0.1 µg/l	85	0	<0.007	<0.012	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	196	0	<0.008	<0.01212	0
Pesticides MCPB	P055	0.1 µg/l	88	0	<0.018	<0.018	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	300	0	<0.007	<0.009	0
Pesticides Mepiquat Chloride	P280	0.1 µg/l	101	0	<0.004	<0.02	0
Pesticides Metaldehyde	P226	0.1 µg/l	559	0	<0.007	<0.035	0
Pesticides Metazachlor	P203	0.1 µg/l	295	0	<0.006	0.02316	0
Pesticides Methabenzthiazuron	P167	0.1 µg/l	219	0	<0.005	<0.006	0
Pesticides Pendimethalin	P118	0.1 µg/l	337	0	<0.009	<0.02	0
Pesticides Pendimethalin	P118	0.1 µg/l	337	0	<0.009	<0.02	0
Pesticides Pentachlorobenzene	P241	0.1 µg/l	84	0	<0.005	<0.006	0
Pesticides Pentachlorophenol	P060	0.1 µg/l	56	0	<0.015	<0.02	0
Pesticides Picloram (Total)	P122	0.1 µg/l	264	0	<0.013	<0.019	0
Pesticides Pirimicarb	P064	0.1 µg/l	280	0	<0.005	<0.007	0
Pesticides Prometryne	P070	0.1 µg/l	272	0	<0.004	<0.005	0
Pesticides Propazine	P066	0.1 µg/l	449	0	<0.004	<0.007	0
Pesticides Propiconazole	P068	0.1 µg/l	181	0	<0.007	<0.007	0
Pesticides Propyzamide	P071	0.1 µg/l	144	0	<0.007	0.0162	0
Pesticides Prosulfocarb	P243	0.1 µg/l	197	0	<0.007	<0.009	0
Pesticides Quinmerac	P244	0.1 µg/l	417	0	<0.006	<0.007	0
Pesticides Simazine	P073	0.1 µg/l	568	0	<0.004	0.01131	0
Pesticides Spiroxamine	P239	0.1 µg/l	440	0	<0.006	<0.006	0
Pesticides Tebuconazole	P177	0.1 µg/l	141	0	<0.005	<0.009	0
Pesticides Terbuthylazine	P173	0.1 µg/l	37	0	<0.003	<0.005	0
Pesticides Terbutryn	P077	0.1 µg/l	282	0	<0.003	<0.005	0
Pesticides Tri-allate	P079	0.1 µg/l	173	0	<0.005	<0.006	0
Pesticides Triclopyr	P131	0.1 µg/l	108	0	<0.015	<0.028	0
Pesticides Trietazine	P132	0.1 µg/l	354	0	<0.004	0.01	0
Pesticides Trifluralin	P081	0.1 µg/l	16	0	<0.004	<0.008	0
Radon	F031	100 Bq/l	196	0	<0.4865	11.224	0
Totals			21,584	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	633	0	10.1	67.162
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	633	1	0	0
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	2,868	0	257	773.62
Gross Alpha	F004	0.1 Bq/l	201	0	<0.01802	0.06278
Gross Beta	F005	1 Bq/l	198	0	0.01899	0.25253
Sulphate	A007	250 mg SO4/l	633	0	3.9568	74.2
Total Organic Carbon	A017	No abnormal change	634	N/A	0.5	2.9
Tritium	F006	100 Bq/l	198	0	<5.6	<8.5
Totals			5,998	1

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	9	0	<0.16	<0.16	0
Antimony	B008A	5 µg Sb/l	541	0	0.03	0.3216	0
Arsenic (Total)	B001A	10 µg As/l	541	0	0.14	0.73	0
Benzene (Total)	F002	1 µg/l	9	0	<0.06	<0.06	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	548	0	<0.00057	<0.00057	0
Boron	D005A	1 mg B/l	9	0	<0.0319	0.119	0
Bromate	F003	10 µg BrO3/l	136	0	<0.15	1.326	0
Cadmium (Total)	B002	5 µg Cd/l	541	0	<0.01	<0.03	0
Chromium (Total)	B004	50 µg Cr/l	541	0	0.0584	0.8816	0
Copper (Total)	A024A	2 mg Cu/l	541	0	0.0014	0.93804	0
Cyanide (Total)	B003	50 µg CN/l	9	0	<1.4	<5.5	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	6,695	1	0	0	1
Enterococci (Confirmed)	C003	0 number/100 ml	541	0	0	0	0
Fluoride (Total)	A027	1.5 mg F/l	9	0	0.09	0.13	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	541	5	<0.04	9.959	4
Mercury (Total)	B005	1 µg Hg/l	9	0	<0.06	<0.06	0
Nickel (Total)	B006A	20 µg Ni/l	541	2	0.4342	12.15	1
Nitrate (Total)	A012	50 mg NO3/l	542	0	<2.11	44.157	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	542	0	<0.002	0.01528	0
Nitrite/Nitrate formula	A013C	1 mg/l	542	0	0	0.88	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	9	0	0	0.077	0
Pesticides 2 4-D	P020	0.1 µg/l	9	0	<0.012	0.014	0
Pesticides Aldrin	P002	0.03 µg/l	9	0	<0.005	<0.008	0
Pesticides Atrazine	P004	0.1 µg/l	9	0	<0.004	<0.005	0
Pesticides Benazolin (Total)	P138	0.1 µg/l	9	0	<0.01	<0.011	0
Pesticides Bentazone	P006	0.1 µg/l	9	0	<0.002	<0.004	0
Pesticides Boscalid	P231	0.1 µg/l	9	0	<0.009	<0.011	0
Pesticides Bromacil	P086	0.1 µg/l	9	0	<0.007	<0.009	0
Pesticides Bromoxynil	P008	0.1 µg/l	9	0	<0.009	<0.009	0
Pesticides Carbendazim (Total)	P150	0.1 µg/l	9	0	<0.003	<0.003	0
Pesticides Carbetamide	P010	0.1 µg/l	9	0	<0.008	<0.01	0
Pesticides Chlormequat	P163	0.1 µg/l	9	0	<0.003	<0.003	0
Pesticides Chlorothalonil	P015	0.1 µg/l	9	0	<0.006	<0.014	0
Pesticides Chlorpyrifos (Chlorpyriphos Ethyl)	P017	0.1 µg/l	9	0	<0.016	<0.016	0
Pesticides Chlortoluron	P014	0.1 µg/l	9	0	<0.006	<0.007	0
Pesticides Clopyralid	P018	0.1 µg/l	9	0	<0.011	0.035	0
Pesticides Cyanazine	P092	0.1 µg/l	9	0	<0.006	<0.007	0
Pesticides Cyproconazole	P207	0.1 µg/l	9	0	<0.007	<0.008	0
Pesticides Diazinon	P024	0.1 µg/l	9	0	<0.006	<0.007	0
Pesticides Dicamba	P025	0.1 µg/l	9	0	<0.012	<0.028	0
Pesticides Dichlorprop	P026	0.1 µg/l	9	0	<0.011	<0.017	0
Pesticides Dieldrin	P028	0.03 µg/l	9	0	<0.005	<0.009	0
Pesticides Diflufenican	P157	0.1 µg/l	9	0	<0.007	<0.009	0
Pesticides Diuron	P032	0.1 µg/l	9	0	<0.009	<0.01	0
Pesticides Epoxyconazole	P217	0.1 µg/l	9	0	<0.005	<0.006	0
Pesticides Fenpropimorph	P037	0.1 µg/l	9	0	<0.004	<0.005	0
Pesticides Flufenacet	P230	0.1 µg/l	9	0	<0.008	0.013	0
Pesticides Fluroxypyr	P040	0.1 µg/l	9	0	<0.009	<0.012	0
Pesticides Flusilazole	P159	0.1 µg/l	9	0	<0.006	<0.007	0
Pesticides Flutriafol	P039	0.1 µg/l	9	0	<0.005	<0.005	0
Pesticides Gamma-HCH (Lindane)	P041	0.1 µg/l	9	0	<0.005	<0.006	0
Pesticides Glyphosate	P042	0.1 µg/l	9	0	<0.005	<0.005	0
Pesticides Heptachlor	P043	0.03 µg/l	9	0	<0.004	<0.005	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	9	0	<0.005	<0.007	0
Pesticides Isoproturon	P048	0.1 µg/l	9	0	<0.005	<0.006	0
Pesticides Linuron	P051	0.1 µg/l	9	0	<0.007	<0.012	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	9	0	<0.008	<0.012	0
Pesticides MCPB	P055	0.1 µg/l	9	0	<0.018	<0.018	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	9	0	<0.007	<0.009	0
Pesticides Mepiquat Chloride	P280	0.1 µg/l	9	0	<0.004	<0.004	0
Pesticides Metaldehyde	P226	0.1 µg/l	9	0	<0.007	0.019	0
Pesticides Metazachlor	P203	0.1 µg/l	9	0	<0.006	<0.007	0
Pesticides Methabenzthiazuron	P167	0.1 µg/l	9	0	<0.005	<0.006	0
Pesticides Parathion (Parathion ethyl)	P059	0.1 µg/l	9	0	<0.007	<0.012	0
Pesticides Pendimethalin	P118	0.1 µg/l	9	0	<0.009	<0.02	0
Pesticides Pentachlorophenol	P060	0.1 µg/l	9	0	<0.015	<0.02	0
Pesticides Picloram (Total)	P122	0.1 µg/l	9	0	<0.013	<0.026	0
Pesticides Pirimicarb	P064	0.1 µg/l	9	0	<0.005	<0.007	0
Pesticides Prometryne	P070	0.1 µg/l	9	0	<0.004	<0.005	0
Pesticides Propazine	P066	0.1 µg/l	9	0	<0.004	<0.007	0
Pesticides Propiconazole	P068	0.1 µg/l	9	0	<0.007	<0.007	0
Pesticides Propyzamide	P071	0.1 µg/l	9	0	<0.007	0.01	0
Pesticides Prosulfocarb	P243	0.1 µg/l	9	0	<0.007	<0.009	0
Pesticides Quinmerac	P244	0.1 µg/l	9	0	<0.006	0.011	0
Pesticides Simazine	P073	0.1 µg/l	9	0	<0.004	<0.005	0
Pesticides Spiroxamine	P239	0.1 µg/l	9	0	<0.006	<0.006	0
Pesticides Tebuconazole	P177	0.1 µg/l	9	0	<0.005	<0.009
Pesticides Terbutryn	P077	0.1 µg/l	9	0	<0.003	<0.005	0
Pesticides Tri-allate	P079	0.1 µg/l	9	0	<0.005	<0.006	0
Pesticides Triclopyr	P131	0.1 µg/l	9	0	<0.015	<0.028	0
Pesticides Trietazine	P132	0.1 µg/l	9	0	<0.004	<0.006	0
Pesticides Trifluralin	P081	0.1 µg/l	9	0	<0.004	<0.007	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	541	0	0	0.00258	0
Radon	F031	100 Bq/l	9	0	<0.5	3.3	0
Selenium (Total)	B009	10 µg Se/l	541	0	0.27	1.2016	0
Trichloroethene & Tetrachloroethene – Sum Of 2 Substances (Total by Calculation)	D009B	10 µg/l	541	0	0	1.6964	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	541	0	1.3482	67.7684	0
Totals			16,118	8

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	2,404	0	<6.9	26.59	0
Colour	A001	20 mg/l Pt/Co	2,421	0	<2.8	<2.8	0
Iron (Total)	A022	200 µg Fe/l	2,404	7	<3.72	70.935	6
Manganese (Total)	A023	50 µg Mn/l	2,405	1	<0.3	3.8164	1
Odour	A003	0 Dilution number at 25°C	2,425	6	0	0	6
Sodium (Total)	A009	200 mg Na/l	541	0	5.3968	40.316	0
Taste (Taste Quant)	A004	0 Dilution number at 25°C	2,422	6	0	0	5
Tetrachloromethane (Total)	D008	3 µg/l	541	0	<0.13	<0.16	0
Turbidity	A002	4 NTU	2,421	0	<0.15	0.39834	0
Totals			17,984	20

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	524	0	<0.008	<0.01614
Chloride	D002A	250 mg Cl/l	9	0	10.3	39.7
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	9	0	0	0
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	6,695	14	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	2,422	N/A	0	37
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	12	0	348	613
Gross Alpha	F004	0.1 Bq/l	9	0	<0.016	<0.034
Gross Beta	F005	1 Bq/l	9	0	0.02	0.137
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	2,422	0	7.11	7.8277
Residual Disinfectant – Free	C009	No abnormal change	6,705	N/A	0.05	0.76
Residual Disinfectant – Total	C010	No abnormal change	6,705	N/A	0.12	0.81
Sulphate	A007	250 mg SO4/l	9	0	4.86	64.9
Total Organic Carbon	A017	No abnormal change	9	N/A	<0.7	4.7
Tritium	F006	100 Bq/l	9	0	<5.6	<8.5
Totals			25,556	14