UUT (United Utilities Water Plc)

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	682	0	<0.0062	<0.0115	0
Totals			682	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	16,270	1	0	0	1
Total Coliforms (Confirmed)	C001	0 number/100 ml	16,272	5	0	0	5
Totals			32,542	6

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	16,267	N/A	0	1
Residual Disinfectant – Free	C009	No abnormal change	16,248	N/A	0.49	1.53
Residual Disinfectant – Total	C010	No abnormal change	16,251	N/A	0.54	1.6
Turbidity – Indicator	A002A	1 NTU	16,249	1	<0.16	<0.24
Totals			65,015	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	17,939	0	0	0	0
Total Coliforms (Confirmed)	C001	0 number/100 ml	17,939	5	0	0	0
Totals:			35,878	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	17,936	N/A	0	9
Residual Disinfectant – Free	C009	No abnormal change	17,952	N/A	0.21	1.24
Residual Disinfectant – Total	C010	No abnormal change	17,933	N/A	0.28	1.29
Totals:			53,821	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	691	0	<0.459	<0.459	0
Benzene (Total)	F002	1 µg/l	691	0	<0.157	<0.157	0
Boron	D005A	1 mg B/l	694	0	<0.0217	0.065705	0
Cyanide (Total)	B003	50 µg CN/l	704	0	<2.33	<3.91	0
Fluoride (Fluoridated)	A027A	1.2 mg F/l	24	0	0.89	1.04	0
Fluoride (Total)	A027	1.5 mg F/l	701	0	<0.01	1.01	0
Mercury (Total)	B005	1 µg Hg/l	689	0	<0.04	<0.05	0
Pesticides (Total by Calculation)	B010	0.5 µg/l	341	0	0	0.027432	0
Pesticides 2 4-D	P020	0.1 µg/l	138	0	<0.012	<0.01788	0
Pesticides 2 4-DB	P082	0.1 µg/l	49	0	<0.021	<0.022	0
Pesticides Aldrin	P002	0.03 µg/l	2	0	<0.0025	<0.0025	0
Pesticides Asulam	P133	0.1 µg/l	58	0	<0.0047	<0.0056	0
Pesticides Atrazine	P004	0.1 µg/l	7	0	<0.009	<0.009	0
Pesticides Bromoxynil	P008	0.1 µg/l	1	0	<0.011	<0.011	0
Pesticides Carbetamide	P010	0.1 µg/l	57	0	<0.01	<0.02	0
Pesticides Chlortoluron	P014	0.1 µg/l	40	0	<0.007	<0.014	0
Pesticides Clopyralid	P018	0.1 µg/l	140	0	<0.011	0.01495	0
Pesticides Diazinon	P024	0.1 µg/l	117	0	<0.008	<0.01456	0
Pesticides Dicamba	P025	0.1 µg/l	34	0	<0.013	<0.019	0
Pesticides Dichlorprop	P026	0.1 µg/l	41	0	<0.013	<0.018	0
Pesticides Dieldrin	P028	0.03 µg/l	2	0	<0.0019	<0.0019	0
Pesticides Diuron	P032	0.1 µg/l	56	0	<0.008	<0.008	0
Pesticides Fluroxypyr	P040	0.1 µg/l	136	0	<0.014	<0.016	0
Pesticides Glyphosate	P042	0.1 µg/l	247	0	<0.0079	0.018752	0
Pesticides Heptachlor	P043	0.03 µg/l	2	0	<0.0026	<0.0026	0
Pesticides Heptachlor Epoxide – Total (Trans, CIS) (Heptachlor Epoxide)	P044	0.03 µg/l	2	0	<0.0039	<0.0039	0
Pesticides Isoproturon	P048	0.1 µg/l	41	0	<0.008	<0.016	0
Pesticides Linuron	P051	0.1 µg/l	40	0	<0.01	<0.02	0
Pesticides MCPA 4-chloro-o-tolyloxyacetic acid	P054	0.1 µg/l	215	0	<0.012	<0.0202	0
Pesticides MCPB	P055	0.1 µg/l	106	0	<0.01	<0.01993	0
Pesticides Metaldehyde	P226	0.1 µg/l	70	0	<0.0045	0.008	0
Pesticides Metazachlor	P203	0.1 µg/l	50	0	<0.008	<0.016	0
Pesticides Pentachlorophenol	P060	0.1 µg/l	17	0	<0.011	<0.021	0
Pesticides Propyzamide	P071	0.1 µg/l	25	0	<0.01	<0.01	0
Pesticides Simazine	P073	0.1 µg/l	2	0	<0.01	<0.01	0
Pesticides Triclopyr	P131	0.1 µg/l	136	0	<0.01244	<0.025	0
Radon	F031	100 Bq/l	31	0	<1.1	18.8	0
Totals			6,398	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	701	0	4.1006	112
Gross Alpha	F004	0.1 Bq/l	31	0	<0.02	0.06
Gross Beta	F005	1 Bq/l	31	0	<0.02	0.14
Sulphate	A007	250 mg SO4/l	696	0	1.8279	107.3
Total Organic Carbon	A017	No abnormal change	703	N/A	<0.67	2.5288
Tritium	F006	100 Bq/l	32	0	<10	<10
Totals			2,194	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
Antimony	B008A	5 µg Sb/l	1,838	0	<0.31	<0.44	0
Arsenic (Total)	B001A	10 µg As/l	1,833	0	<0.09	3.883	0
Benzo[a]Pyrene (Total)	D007	0.01 µg/l	2,092	1	<0.002	<0.002	1
Bromate	F003	10 µg BrO3/l	1,821	0	<0.12	1.849	0
Cadmium (Total)	B002	5 µg Cd/l	1,837	0	<0.09	<0.1	0
Chromium (Total)	B004	50 µg Cr/l	1,834	0	<0.16	<0.83	0
Copper (Total)	A024A	2 mg Cu/l	1,848	0	<0.0031	0.15359	0
E coli (faecal coliforms Confirmed)	C002	0 number/100 ml	19,312	1	0	0	1
Enterococci (Confirmed)	C003	0 number/100 ml	1,828	0	0	0	0
Fluoride (Fluoridated)	A027A	1.2 mg F/l	38	11	0.37	1.07	3
Fluoride (Total)	A027	1.5 mg F/l	39	0	0.07	1.07	0
Lead (10 – will apply 25.12.2013)	B007B	10 µg Pb/l	1,842	3	<0.55	4.4026	3
Nickel (Total)	B006A	20 µg Ni/l	1,836	5	<0.77	7.1878	5
Nitrate (Total)	A012	50 mg NO3/l	2,014	0	<1.02	31.665	0
Nitrite – Consumer’s Taps	A013A	0.5 mg NO2/l	2,013	0	<0.0062	<0.0115	0
Nitrite/Nitrate formula	A013C	1 mg/l	2,013	0	0.014	0.6342	0
Polycyclic Aromatic Hydrocarbons (Total by Calculation)	B011F	0.1 µg/l	2,092	0	0	0.00207	0
Selenium (Total)	B009	10 µg Se/l	1,835	0	<0.2	<0.99	0
Trichloroethene & Tetrachloroethene – Sum Of 2 Substances (Total by Calculation)	D009B	10 µg/l	1,845	0	0	0.32224	0
Trihalomethanes (Total by Calculation)	D011	100 µg/l	1,851	0	0	54.836	0
Totals			51,661	21

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	7,239	6	<2.71	43.76	5
Colour	A001	20 mg/l Pt/Co	7,317	0	<1.21	<2.16	0
Iron (Total)	A022	200 µg Fe/l	7,219	22	<2.1	96.98	21
Manganese (Total)	A023	50 µg Mn/l	7,224	6	<0.37	9.9125	5
Odour	A003	0 Dilution number at 25°C	7,372	14	0	0	14
Sodium (Total)	A009	200 mg Na/l	1,816	0	2.85	56.083	0
Taste (Taste Quant)	A004	0 Dilution number at 25°C	7,341	14	0	0	13
Tetrachloromethane (Total)	D008	3 µg/l	1,857	0	<0.06	0.1242	0
Turbidity	A002	4 NTU	7,280	1	<0.16	<0.24	1
Totals			54,665	63

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	2,054	0	<0.0154	<0.0475
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	1,822	9	0	0
Coliform Bacteria (Indicator)	C001A	0 number/100 ml	19,311	49	0	0
Colony Counts After 3 Days At 22øc (Colony Counts)	C007	No abnormal change	7,320	N/A	0	33
Conductivity (Electrical Conductivity)	D001	2500 µS/cm at 20°C	7,290	0	46	687.36
Hydrogen ion (pH) – Indicator (Hydrogen ion) (pH)	A006	6.5 – 9.5 pH Value	7,259	2	6.89	8.04
Residual Disinfectant – Free	C009	No abnormal change	19,353	N/A	0.11	1.16
Residual Disinfectant – Total	C010	No abnormal change	19,349	N/A	0.21	1.25
Totals			83,758	51