SVT (Severn Trent Water 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	1,567	0	<0.005	<0.013	0
Totals			1,567	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	22,760	1	0	0	1
Total Coliforms (Confirmed)	C001	0 number/100 ml	22,760	6	0	0	6
Totals			45,520	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	22,759	N/A	0	2
Residual Disinfectant – Free	C009	No abnormal change	22,762	N/A	0.17	1.04
Residual Disinfectant – Total	C010	No abnormal change	520	N/A	0.1742	0.5958
Turbidity – Indicator	A002A	1 NTU	22,755	2	<0.12	<0.24
Totals			68,796	2

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	22,481	1	0	0	1
Total Coliforms (Confirmed)	C001	0 number/100 ml	22,481	3	0	0	0
Totals:			44,962	4

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	22,481	N/A	0	53
Residual Disinfectant – Free	C009	No abnormal change	22,481	N/A	0.06	0.61
Residual Disinfectant – Total	C010	No abnormal change	1,420	N/A	0.13	0.84
Totals:			46,382	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	1,003	0	<0.24	<0.3	0
Benzene (Total)	F002	1 µg/l	1,003	0	<0.06	<0.12	0
Boron	D005A	1 mg B/l	1,003	0	<0.011	0.153	0
Cyanide (Total)	B003	50 µg CN/l	1,003	0	<3.6	<3.6	0
Mercury (Total)	B005	1 µg Hg/l	1,003	0	<0.034	<0.034	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	470	0	0	0.09287	0
Pesticides 2 4-D	P020	0.1 µg/l	267	0	<0.009	<0.011	0
Pesticides 2 4-DB	P082	0.1 µg/l	267	0	<0.016	<0.016	0
Pesticides 2,3,6-Tba	P074	0.1 µg/l	267	0	<0.027	<0.027	0
Pesticides Aldrin	P002	0.03 µg/l	284	0	<0.003	<0.003	0
Pesticides Asulam	P133	0.1 µg/l	299	0	<0.013	<0.013	0
Pesticides Atrazine	P004	0.1 µg/l	333	0	<0.011	0.02866	0
Pesticides Azoxystrobin	P227	0.1 µg/l	267	0	<0.004	<0.004	0
Pesticides Benazolin (Total)	P138	0.1 µg/l	267	0	<0.007	0.00932	0
Pesticides Bentazone	P006	0.1 µg/l	339	0	<0.006	0.0152	0
Pesticides Boscalid	P231	0.1 µg/l	267	0	<0.007	<0.007	0
Pesticides Bromoxynil	P008	0.1 µg/l	267	0	<0.011	<0.011	0
Pesticides Carbendazim (Total)	P150	0.1 µg/l	267	0	<0.011	<0.011	0
Pesticides Carbetamide	P010	0.1 µg/l	267	0	<0.012	<0.012	0
Pesticides Chloridazon	P162	0.1 µg/l	283	0	<0.004	0.005	0
Pesticides Chlormequat	P163	0.1 µg/l	268	0	<0.003	0.00531	0
Pesticides Chlortoluron	P014	0.1 µg/l	267	0	<0.012	<0.012	0
Pesticides Clopyralid	P018	0.1 µg/l	299	0	<0.009	0.043	0
Pesticides Cyproconazole	P207	0.1 µg/l	267	0	<0.007	<0.007	0
Pesticides Diazinon	P024	0.1 µg/l	267	0	<0.01	<0.01	0
Pesticides Dicamba	P025	0.1 µg/l	267	0	<0.015	<0.015	0
Pesticides Dichlorprop	P026	0.1 µg/l	267	0	<0.009	<0.009	0
Pesticides Dieldrin	P028	0.03 µg/l	285	0	<0.008	<0.008	0
Pesticides Diflufenican	P157	0.1 µg/l	267	0	<0.01	<0.01	0
Pesticides Dimethenamid – P	P265	0.1 µg/l	267	0	<0.006	<0.006	0
Pesticides Diuron	P032	0.1 µg/l	267	0	<0.013	<0.013	0
Pesticides Epoxyconazole	P217	0.1 µg/l	275	0	<0.007	<0.007	0
Pesticides Ethofumersate	P221	0.1 µg/l	267	0	<0.015	<0.015	0
Pesticides Flufenacet	P230	0.1 µg/l	267	0	<0.005	0.00532	0
Pesticides Fluroxypyr	P040	0.1 µg/l	267	0	<0.006	0.013	0
Pesticides Flusilazole	P159	0.1 µg/l	99	0	<0.009	<0.009	0
Pesticides Flutriafol	P039	0.1 µg/l	275	0	<0.015	<0.015	0
Pesticides Fosthiazate	P254	0.1 µg/l	48	0	<0.012	<0.012	0
Pesticides Glyphosate	P042	0.1 µg/l	268	0	<0.015	<0.03	0
Pesticides Heptachlor	P043	0.03 µg/l	284	0	<0.003	<0.003	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	284	0	0	0	0
Pesticides Isoproturon	P048	0.1 µg/l	267	0	<0.011	<0.011	0
Pesticides Linuron	P051	0.1 µg/l	267	0	<0.012	<0.012	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	267	0	<0.006	0.01664	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	275	0	<0.005	0.014	0
Pesticides Metalaxyl	P209	0.1 µg/l	283	0	<0.007	0.015	0
Pesticides Metaldehyde	P226	0.1 µg/l	316	0	<0.006	0.052	0
Pesticides Metamitron	P194	0.1 µg/l	283	0	<0.012	<0.012	0
Pesticides Metazachlor	P203	0.1 µg/l	267	0	<0.011	0.012	0
Pesticides Metribuzin	P152	0.1 µg/l	267	0	<0.004	<0.004	0
Pesticides Oxadixyl	P154	0.1 µg/l	291	0	<0.004	0.07924	0
Pesticides Pendimethalin	P118	0.1 µg/l	267	0	<0.012	<0.012	0
Pesticides Propiconazole	P068	0.1 µg/l	267	0	<0.014	<0.014	0
Pesticides Propyzamide	P071	0.1 µg/l	275	0	<0.011	<0.011	0
Pesticides Prosulfocarb	P243	0.1 µg/l	267	0	<0.005	<0.005	0
Pesticides Quinmerac	P224	0.1 µg/l	283	0	<0.009	<0.009	0
Pesticides Simazine	P073	0.1 µg/l	270	0	<0.011	<0.011	0
Pesticides Tebuconazole	P177	0.1 µg/l	267	0	<0.006	<0.006	0
Pesticides Terbutryn	P077	0.1 µg/l	267	0	<0.009	<0.009	0
Pesticides Triadimefon	P078	0.1 µg/l	267	0	<0.012	<0.012	0
Pesticides Tri-allate	P079	0.1 µg/l	268	0	<0.003	<0.003	0
Pesticides Triclopyr	P131	0.1 µg/l	267	0	<0.011	<0.011	0
Totals			20,496	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	1,003	0	8.804	167.44
Gross Alpha	F004	0.1 Bq/l	49	18	<0.025	0.48
Gross Beta	F005	1 Bq/l	49	0	0.028	0.177
Sulphate	A007	250 mg SO4/l	1,003	0	6.112	149.412
Total Organic Carbon	A017	No abnormal change	1,003	N/A	<0.8	3.396
Tritium	F006	100 Bq/l	33	0	<3	<3
Totals			3,140	18

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	136	0	<0.24	<0.3	0
Antimony	B008A	5 µg Sb/l	1,572	0	<0.04	0.49	0
Arsenic (Total)	B001A	10 µg As/l	1,572	0	0.07	6.4535	0
Benzene (Total)	F002	1 µg/l	136	0	<0.06	<0.12	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	1,572	0	<0.00074	<0.001	0
Boron	D005A	1 mg B/l	136	0	<0.011	0.08763	0
Bromate	F003	10 µg BrO3/l	1,572	0	<0.53	2.26	0
Cadmium (Total)	B002	5 µg Cd/l	1,572	0	<0.02	0.6208	0
Chromium (Total)	B004	50 µg Cr/l	1,572	0	<0.3	<2.1	0
Copper (Total)	A024A	2 mg Cu/l	1,572	0	<0.0014	0.565814	0
Cyanide (Total)	B003	50 µg CN/l	136	0	<3.6	<3.6	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	21,663	1	0	0	1
Enterococci (Confirmed)	C003	0 number/100 ml	1,572	1	0	0	1
Fluoride (Fluoridated)	A027A	1.2 mg F/l	205	56	0.08	1.0694	23
Fluoride (Total)	A027	1.5 mg F/l	1,572	0	<0.08	1.02	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	1,572	5	<0.13	6.1888	5
Mercury (Total)	B005	1 µg Hg/l	136	0	<0.034	<0.034	0
Nickel (Total)	B006A	20 µg Ni/l	1,572	2	<0.5	9.454	2
Nitrate (Total)	A012	50 mg NO3/l	1,788	0	<2.01	41.5233	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	1,788	0	<0.005	0.02611	0
Nitrite/Nitrate formula	A013C	1 mg/l	1,788	0	<0.04	0.83	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	136	0	0	0.1103	0
Pesticides 2 4-D	P020	0.1 µg/l	136	0	<0.009	0.01063	0
Pesticides 2 4-DB	P082	0.1 µg/l	136	0	<0.016	<0.016	0
Pesticides 2,3,6-Tba	P074	0.1 µg/l	136	0	<0.027	<0.027	0
Pesticides Aldrin	P002	0.03 µg/l	136	0	<0.003	<0.003	0
Pesticides Asulam	P133	0.1 µg/l	136	0	<0.013	<0.013	0
Pesticides Atrazine	P004	0.1 µg/l	136	0	<0.011	<0.011	0
Pesticides Azoxystrobin	P227	0.1 µg/l	136	0	<0.004	<0.004	0
Pesticides Benazolin (Total)	P138	0.1 µg/l	136	0	<0.007	<0.007	0
Pesticides Bentazone	P006	0.1 µg/l	136	0	<0.006	<0.02364	0
Pesticides Boscalid	P231	0.1 µg/l	136	0	<0.007	<0.007	0
Pesticides Bromoxynil	P008	0.1 µg/l	136	0	<0.011	<0.011	0
Pesticides Carbendazim (Total)	P150	0.1 µg/l	136	0	<0.011	<0.011	0
Pesticides Carbetamide	P010	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Chloridazon	P162	0.1 µg/l	136	0	<0.004	<0.004	0
Pesticides Chlormequat	P163	0.1 µg/l	136	0	<0.003	0.02367	0
Pesticides Chlortoluron	P014	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Clopyralid	P018	0.1 µg/l	136	0	<0.009	0.02	0
Pesticides Cyproconazole	P207	0.1 µg/l	136	0	<0.007	<0.007	0
Pesticides Diazinon	P024	0.1 µg/l	136	0	<0.01	<0.01	0
Pesticides Dicamba	P025	0.1 µg/l	136	0	<0.015	<0.02445	0
Pesticides Dichlorprop	P026	0.1 µg/l	136	0	<0.009	<0.009	0
Pesticides Dieldrin	P028	0.03 µg/l	136	0	<0.008	<0.008	0
Pesticides Diflufenican	P157	0.1 µg/l	136	0	<0.01	<0.01	0
Pesticides Dimethenamid – P	P265	0.1 µg/l	136	0	<0.006	<0.006	0
Pesticides Diuron	P032	0.1 µg/l	136	0	<0.013	<0.013	0
Pesticides Epoxyconazole	P217	0.1 µg/l	136	0	<0.007	<0.007	0
Pesticides Ethofumersate	P221	0.1 µg/l	136	0	<0.015	<0.015	0
Pesticides Flufenacet	P230	0.1 µg/l	136	0	<0.005	0.00852	0
Pesticides Fluroxypyr	P040	0.1 µg/l	136	0	<0.006	0.013	0
Pesticides Flusilazole	P159	0.1 µg/l	47	0	<0.009	<0.009	0
Pesticides Flutriafol	P039	0.1 µg/l	136	0	<0.015	<0.015	0
Pesticides Fosthiazate	P254	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Glyphosate	P042	0.1 µg/l	136	0	<0.015	<0.03	0
Pesticides Heptachlor	P043	0.03 µg/l	136	0	<0.003	<0.003	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	136	0	0	0	0
Pesticides Isoproturon	P048	0.1 µg/l	136	0	<0.011	<0.0011	0
Pesticides Linuron	P051	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	136	0	<0.006	0.00863	0
Pesticides MCPP (Mecoprop)	P053	0.1 µg/l	136	0	<0.005	0.00926	0
Pesticides Metalaxyl	P209	0.1 µg/l	136	0	<0.007	<0.01141	0
Pesticides Metaldehyde	P226	0.1 µg/l	136	0	<0.006	0.05463	0
Pesticides Metamitron	P194	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Metazachlor	P203	0.1 µg/l	136	0	<0.011	0.02178	0
Pesticides Metribuzin	P152	0.1 µg/l	136	0	<0.004	<0.00463	0
Pesticides Oxadixyl	P154	0.1 µg/l	136	0	<0.004	0.07963	0
Pesticides Pendimethalin	P118	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Propiconazole	P068	0.1 µg/l	136	0	<0.014	<0.014	0
Pesticides Propyzamide	P071	0.1 µg/l	136	0	<0.011	0.01363	0
Pesticides Prosulfocarb	P243	0.1 µg/l	136	0	<0.005	<0.005	0
Pesticides Quinmerac	P244	0.1 µg/l	136	0	<0.009	<0.01719	0
Pesticides Simazine	P073	0.1 µg/l	136	0	<0.011	<0.011	0
Pesticides Tebuconazole	P177	0.1 µg/l	136	0	<0.006	<0.006	0
Pesticides Terbutryn	P077	0.1 µg/l	136	0	<0.009	<0.009	0
Pesticides Triadimefon	P078	0.1 µg/l	136	0	<0.012	<0.012	0
Pesticides Tri-allate	P079	0.1 µg/l	136	0	<0.003	<0.003	0
Pesticides Triclopyr	P131	0.1 µg/l	136	0	<0.011	<0.011	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	1,572	0	0	0.0022262	0
Selenium (Total)	B009	10 µg Se/l	1,572	0	<0.07	1.6381	0
Trichloroethene & Tetrachloroethene – Sum Of 2 Substances (Total by Calculation)	D009B	10 µg/l	1,572	0	0	0.3927	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	1,572	0	0	65.091	0
Totals			59,155	65

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	6,582	0	<14	19	0
Colour	A001	20 mg/l Pt/Co	7,652	0	<0.7	2.59	0
Iron (Total)	A022	200 µg Fe/l	6,582	13	<8	84	10
Manganese (Total)	A023	50 µg Mn/l	6,582	1	<0.7	5.6	1
Odour	A003	0 Dilution number at 25°C	7,652	4	0	0	3
Sodium (Total)	A009	200 mg Na/l	1,572	1	6.1	94.553	1
Taste (Taste Quant)	A004	0 Dilution number at 25°C	7,652	2	0	0	2
Tetrachloromethane (Total)	D008	3 µg/l	1,572	0	<0.19	<0.2	0
Turbidity	A002	4 NTU	7,652	0	<0.12	0.24	0
Totals			53,498	21

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	7,652	0	<0.029	<0.064
Chloride	D002A	250 mg Cl/l	136	0	8.944	140.36
Clostridum Perfringens (Sulphite-reducing Clostridia) (Confirmed)	C004A	0 number/100 ml	6,582	0	0	0
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	21,663	44	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	7,652	N/A	0	37
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	7,652	0	124.4	780
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	7,652	1	6.93	8.27
Residual Disinfectant – Free	C009	No abnormal change	21,663	N/A	0.04	0.63
Residual Disinfectant – Total	C010	No abnormal change	864	N/A	0.12	0.7335
Sulphate	A007	250 mg SO4/l	136	0	6.059	123.082
Total Organic Carbon	A017	No abnormal change	136	N/A	<0.8	3.463
Totals			81,788	45