sampling point
Pix Bk.Outlet Reservoir U/S Letchworth

Description	PIX BK.OUTLET RESERVOIR U/S LETCHWORTH
Sampling point ID	AN-14M05
Type	Freshwater – Rivers
Status	open
Location	easting northing: 520990 233450 lat lon: 51.986331, -0.23952
Area	Cambridgeshire And Bedfordshire
Sub-Area	Brampton Team Sub Area
Summary	234 samples taken between 2024 and 2000

Determinands identify a property which can be measured on a sample or the sampling environment, together with the units in which the result of that measurement will be expressed.

104 determinands have been measured at this site

1,1,1,2 -TET
1,1,1-TCA
1,1-Dichloro
1122TetClEth
112TCEthan
11DClEthan
12-DCA
Al- Filtered
Alky pH 4.5
Aluminium-Al
Ammonia(N)
B - Filtered
BOD ATU
BOD5Dy0.5ATU
BROMO-DCM
Ba- Filtered
Barium - Ba
Benzene
Bicarb HCO3
Boron - as B
Bromoform
C - Org Filt
CHLOR A
CHLOROPHYLL
COD as O2
Ca Filtered
Cadmium - Cd
Calcium - Ca
Carbon Tet
Cd Filtered
Chlordbrmthn
Chloride Ion
Chlorobenzen
Chloroform
Chromium -Cr
Cond @ 20C
Cond @ 25C
Copper - Cu
Cr- Filtered
Cu BLM Bio
Cu Filtered
ETBE
Ethenylbenzn
Ethylbenzene
Fe- Filt
Fluoride - F
Hardness
IonicBal Dis
IonicBalance
Iron - as Fe
K- Filtered
Lead - as Pb
Lithium - Li
Lithium Filt
MTBE
Magnesium-Mg
Manganse-Mn
Mg Filtered
Mn BLM Bio
Mn- Filtered
N Inorganic
N Oxidised
NH3 un-ion
NO FLOW/SAMP
Na- Filtered
Ni BLM Bio
Ni- Filtered
Nickel - Ni
Nitrate-N
Nitrite-N
O Diss %sat
O Diss% Satn
O Dissolved
Orthophospht
Oxygen Diss
Pb BLM Bio
Pb Filtered
Potassium- K
SO4dis
SiO2 Rv
Sld Sus@105C
Sodium - Na
Strontium-Sr
StrontumFilt
Sulphate SO4
TAME
Temp Water
TetClEthene
Toluene
Trichloroeth
Trihalomethn
Turbidity
TurbidityNTU
Vinyl Cl
Zinc - as Zn
Zn BLM Bio
Zn- Filtered
c12DClEthe
m-p-Xylene
o-Xylene
pH
pH Inst unit
pH in-situ
t12DCEe

Displaying the twenty most recent samples. You can see all 234 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 11 Oct 2021 to 2 Apr 2024

Notation	Determinand	Units	11 Oct 2021 11:35	19 Jan 2022 11:21	29 Apr 2022 09:21	12 Jul 2022 11:27	21 Nov 2022 12:54	18 Jan 2023 12:05	3 Jul 2023 09:55	6 Oct 2023 09:08	4 Jan 2024 15:32	2 Apr 2024 13:18
0050	Lead	μg/l	2	< 2	< 2	< 2	2.3	< 2	< 2	< 2	< 2	< 2
0052	Lead, Dissolved	μg/l	0.16	0.19	0.29	0.89	0.4	0.13	0.32	0.41	0.2
0061	pH							8.18		7.1	8.3	8.24
0076	Temperature of Water	°C	11.1	5.3	8.9	20.3	8.4	3.6	14.3	13.8	8.9	11.3
0077	Conductivity at 25 C	μs/cm	837	934	897	476	701	997	783	836	899	831
0106	Cadmium, Dissolved	μg/l	0.021	0.027	0.021	0.053	0.022	0.033	< 0.01	0.055	0.021
0108	Cadmium	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1
0111	Ammoniacal Nitrogen as N	mg/l	0.069	< 0.03	0.2	0.34	< 0.03	0.054	0.19	< 0.03	< 0.03
0116	Nitrogen, Total Oxidised as N	mg/l	5	4.7	3.7	2	4	7.1	3.6	< 0.2	5.7
0117	Nitrate as N	mg/l	4.94	4.66	3.58	1.86	3.98	7.07	3.46	< 0.196	5.67
0118	Nitrite as N	mg/l	0.06	0.037	0.12	0.14	0.022	0.032	0.14	< 0.004	0.026
0158	Hardness, Total as CaCO3	mg/l	376	408	406	380	294	405	345	347	403
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	280	300	290	270	210	280	250	280	300
0172	Chloride	mg/l	56	66	68	58	54	87	58	62	57
0177	Fluoride	mg/l	0.21	0.21	0.19		0.2		0.18	0.19	0.24
0180	Orthophosphate, reactive as P	mg/l	0.34	0.26	0.38	0.33	0.14	0.13	0.25	0.25	0.099
0182	Silica, reactive as SiO2	mg/l	15	13	11	15	11	11	14	17	12
0183	Sulphate as SO4	mg/l	66	86	77	81	66	100	62	59	80	66
0205	Sodium, Dissolved	mg/l	33	38	39	35	32	46	34	36	37
0207	Sodium	mg/l	31	39	39	35	32	46	34	36	36	33
0209	Potassium, Dissolved	mg/l	2.8	2.3	3.3	3.9	2.6	2.5	3.1	5.4	2.5
0211	Potassium	mg/l	2.9	2.4	3.4	4.1	2.6	2.6	3.1	5.6	2.5	1.9
0235	Magnesium, Dissolved	mg/l	6.3	8.1	7.7	7.3	4.7	7.5	5	5.5	6.8
0237	Magnesium	mg/l	6.1	8.2	7.8	7.5	4.7	7.7	5	5.4	6.8	6.3
0239	Calcium, Dissolved	mg/l	140	150	150	140	110	150	130	130	150
0241	Calcium	mg/l	130	150	150	140	110	160	130	130	150	130
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l	2.2	2.4	3.2	3.9	3.3	3.6	3.2	40	4
1049	Carbon tetrachloride :- {Tetrachloromethane}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
1200	Trihalomethanes : Total :- {THM}	μg/l	< 0.4	< 0.4	0.41	0.5	< 0.4	< 0.4	< 0.4	< 0.4		0.4
3164	Chromium	μg/l	1	1.3	0.89	< 0.5	1.5	1.1	0.68	0.98	1	0.96
3169	pH : In Situ		8.11	8.17	8.03	7.87	8	8.18	7.94
3268	1,1,1-Trichloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3269	1,1-Dichloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3272	1,2-Dichloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3282	Bromodichloromethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3283	Bromoform :- {Tribromomethane}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		0.1
3290	Chlorobenzene	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3292	Chlorodibromomethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3328	Tetrachloroethylene :- {Perchloroethylene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3334	Trichloroethylene :- {Trichloroethene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3373	Chloroform :- {Trichloromethane}	μg/l	< 0.1	< 0.1	0.11	0.2	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3377	Lead : BLM Bioavailable	μg/l	0.07	0.08	0.09	0.23	0.12	0.04	0.1	0.02	0.05
3386	Ionic Balance: Dissolved	%	0.456	-0.511	1.62	2.03	-0.318	-2.08	1.65	0.313	0.0976
3408	Zinc, Dissolved	μg/l	7.8	9.5	9	30	18	11	9.3	28	13
3409	Chromium, Dissolved	μg/l	0.79	0.94	0.7	< 0.5	1.2	0.97	< 0.5	0.69	0.78
3410	Nickel, Dissolved	μg/l	0.92	1.5	2.1	6.1	1.6	1.5	1.8	2.8	1.4
3781	Benzene	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3784	Toluene :- {Methylbenzene}	μg/l	< 0.1	< 0.1	0.16	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
3878	Nickel : BLM Bioavailable	μg/l	0.57	1	0.99	2.2	0.74	0.83	0.95	0.26	0.87
4117	Ethylbenzene	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
4201	Lithium, Dissolved	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
4820	Manganese : BLM Bioavailable	μg/l	3.4	4.1	9.5	16	2.8	4	16	2.6	5
4821	Copper : BLM Bioavailable	μg/l	0.43	0.42	0.31	0.18	0.24	0.24	0.2	0.05	0.44
4822	Zinc : BLM Bioavailable	μg/l	4.1	4.9	4.1	13	8.3	4.8	4.3	5.4	5.4
6037	Aluminium, Dissolved	μg/l	< 10	< 10	< 10	12	11	< 10	< 10	11	15
6050	Manganese	μg/l	< 10	13	21	43	12	< 10	29	30	11	< 10
6051	Iron	μg/l	140	180	110	90	180	81	190	180	98	69
6057	Aluminium	μg/l	110	110	45	14	95	50	77	55	59	39
6059	Boron	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
6062	Barium	μg/l	55	55	57	68	45	54	57	63	52	45
6063	Strontium	μg/l	440	490	470	470	340	490	400	430	460	400
6064	Lithium	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
6450	Copper, Dissolved	μg/l	2	1.8	2.7	2.5	2.2	1.9	1.5	2.8	3.3
6452	Copper	μg/l	2.5	2.5	3.3	4	3.3	2.3	2.6	3.8	3.1	2.5
6455	Zinc	μg/l	10	14	14	36	24	13	14	32	12	13
6458	Manganese, Dissolved	μg/l	< 10	< 10	17	41	< 10	< 10	24	26	< 10
6460	Iron, Dissolved	μg/l	< 30	< 30	37	80	< 30	< 30	50	67	< 30
6462	Nickel	μg/l	< 1	1.7	2.2	6.3	1.8	1.6	2	2.9	1.5	1.3
6534	1,1,1,2-Tetrachloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
6538	cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
6539	trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
6656	MTBE :- {Methyl tert-butyl ether}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
6693	Strontium, Filtered	μg/l	450	480	460	470	350	480	400	430	470
6715	Vinyl chloride :- {Chloroethylene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
6716	Dimethylbenzene : Sum of isomers (1,3- 1,4-)	μg/l	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2	< 0.2		< 0.2
7044	Ionic Balance	%	-2.87	-0.341	1.68	2.03	-0.318	0.211	1.65	0.295	-0.0193
7531	1,1,2,2-Tetrachloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
7859	Sulphate, Dissolved as SO4	mg/l	67	85	77	80	66	98	62	59	81
9446	Barium, Dissolved	μg/l	55	53	56	68	45	53	56	63	53
9447	Boron, Dissolved	μg/l	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100	< 100
9584	Bicarbonate as HCO3	mg/l	342	366	354	329	256	342	305	342	366
9811	1,1,2-Trichloroethane	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9836	1,1-Dichloroethylene :- {1,1-Dichloroethene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9839	tert-Amyl methyl ether :- {TAME}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9844	Ethyl tert-butyl ether :- {ETBE}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9845	1,2-Dimethylbenzene :- {o-Xylene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9888	Styrene :- {Vinylbenzene}	μg/l	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1	< 0.1		< 0.1
9901	Oxygen, Dissolved, % Saturation	%	84.2	89.6	74.6	72	85.1	92.4	67.6	42.8	93	104.8
9924	Oxygen, Dissolved as O2	mg/l	9.24	11.3	8.62	6.49	9.96	12.2	6.9	4.42	10.8	11.5

Samples from 14 Aug 2018 to 6 Jul 2021

Notation	Determinand	Units	14 Aug 2018 09:49	8 Oct 2018 10:55	13 Nov 2018 12:10	30 Nov 2018 12:55	18 Dec 2018 11:57	22 Jan 2019 08:54	6 Feb 2019 10:37	21 Mar 2019 07:56	26 Apr 2019 15:45	6 Jul 2021 10:39
0050	Lead	μg/l										4.9
0052	Lead, Dissolved	μg/l										0.57
0061	pH		7.89	7.85	7.93		8.09	7.9	7.88	8
0076	Temperature of Water	°C	15.9	10.1	9.6		8.2	5	7.4	8.4		15.3
0077	Conductivity at 25 C	μs/cm	604	699	866		902	2937	1278	981		177
0106	Cadmium, Dissolved	μg/l										0.029
0108	Cadmium	μg/l										< 0.1
0111	Ammoniacal Nitrogen as N	mg/l	0.088	0.276	0.439		0.082	0.423	0.32	0.277		0.033
0116	Nitrogen, Total Oxidised as N	mg/l	2.41	4.26	4.37		4.16	1.44	1.92	4.96		0.81
0117	Nitrate as N	mg/l	2.33	4.12	4.21		4.12	1.36	1.84	4.85		0.793
0118	Nitrite as N	mg/l	0.0783	0.137	0.162		0.0397	0.0799	0.076	0.11		0.017
0119	Ammonia un-ionised as N	mg/l	0.00193	0.00361	0.00664		0.00131	0.00426	0.00367	0.00449
0158	Hardness, Total as CaCO3	mg/l										61
0162	Alkalinity to pH 4.5 as CaCO3	mg/l	178	235	259		253	78	115	281		60
0172	Chloride	mg/l				63.2					134	12
0177	Fluoride	mg/l										0.054
0180	Orthophosphate, reactive as P	mg/l	0.313	0.533	0.457		0.238	0.136	0.078	0.193		0.049
0182	Silica, reactive as SiO2	mg/l										3.9
0183	Sulphate as SO4	mg/l										< 10
0205	Sodium, Dissolved	mg/l										9.5
0207	Sodium	mg/l										9.1
0209	Potassium, Dissolved	mg/l										1.5
0211	Potassium	mg/l										1.5
0235	Magnesium, Dissolved	mg/l										0.87
0237	Magnesium	mg/l										0.97
0239	Calcium, Dissolved	mg/l										23
0241	Calcium	mg/l										23
0301	Carbon, Organic, Dissolved as C :- {DOC}	mg/l										3.3
1049	Carbon tetrachloride :- {Tetrachloromethane}	μg/l				< 0.1					< 0.1	< 0.1
1200	Trihalomethanes : Total :- {THM}	μg/l				< 0.4					0.42	< 0.4
3164	Chromium	μg/l										2.5
3169	pH : In Situ											7.98
3268	1,1,1-Trichloroethane	μg/l				< 0.1					< 0.1	< 0.1
3269	1,1-Dichloroethane	μg/l				< 0.1					< 0.1
3272	1,2-Dichloroethane	μg/l				< 0.1					< 0.1
3282	Bromodichloromethane	μg/l				< 0.1					< 0.1	< 0.1
3283	Bromoform :- {Tribromomethane}	μg/l				< 0.1					< 0.1	< 0.1
3290	Chlorobenzene	μg/l				< 0.1					< 0.1
3292	Chlorodibromomethane	μg/l				< 0.1					< 0.1	< 0.1
3328	Tetrachloroethylene :- {Perchloroethylene}	μg/l				< 0.1					< 0.1	< 0.1
3334	Trichloroethylene :- {Trichloroethene}	μg/l				< 0.1					< 0.1	< 0.1
3373	Chloroform :- {Trichloromethane}	μg/l				< 0.1					0.12	< 0.1
3377	Lead : BLM Bioavailable	μg/l										0.17
3386	Ionic Balance: Dissolved	%										-3.84
3408	Zinc, Dissolved	μg/l										26
3409	Chromium, Dissolved	μg/l										1.7
3410	Nickel, Dissolved	μg/l										0.78
3781	Benzene	μg/l				< 0.1					< 0.1	< 0.1
3784	Toluene :- {Methylbenzene}	μg/l				< 0.1					< 0.1	< 0.1
3878	Nickel : BLM Bioavailable	μg/l										0.35
4117	Ethylbenzene	μg/l				< 0.1					< 0.1	< 0.1
4201	Lithium, Dissolved	μg/l										< 100
4820	Manganese : BLM Bioavailable	μg/l										1.9
4821	Copper : BLM Bioavailable	μg/l										0.32
4822	Zinc : BLM Bioavailable	μg/l										14
6037	Aluminium, Dissolved	μg/l										25
6050	Manganese	μg/l										18
6051	Iron	μg/l										580
6057	Aluminium	μg/l										380
6059	Boron	μg/l										< 100
6062	Barium	μg/l										18
6063	Strontium	μg/l										70
6064	Lithium	μg/l										< 100
6450	Copper, Dissolved	μg/l										4.4
6452	Copper	μg/l										7.5
6455	Zinc	μg/l										46
6458	Manganese, Dissolved	μg/l										< 10
6460	Iron, Dissolved	μg/l										32
6462	Nickel	μg/l										1.4
6534	1,1,1,2-Tetrachloroethane	μg/l				< 0.1					< 0.1	< 0.1
6538	cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}	μg/l				< 0.1					< 0.1	< 0.1
6539	trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}	μg/l				< 0.1					< 0.1	< 0.1
6656	MTBE :- {Methyl tert-butyl ether}	μg/l				< 0.1					< 0.1	< 0.1
6693	Strontium, Filtered	μg/l										71
6715	Vinyl chloride :- {Chloroethylene}	μg/l				< 0.1					< 0.1	< 0.1
6716	Dimethylbenzene : Sum of isomers (1,3- 1,4-)	μg/l				< 0.2					< 0.2	< 0.2
7044	Ionic Balance	%										-4.11
7531	1,1,2,2-Tetrachloroethane	μg/l				< 0.1					< 0.1
7859	Sulphate, Dissolved as SO4	mg/l										< 10
9446	Barium, Dissolved	μg/l										13
9447	Boron, Dissolved	μg/l										< 100
9584	Bicarbonate as HCO3	mg/l										73.2
9811	1,1,2-Trichloroethane	μg/l				< 0.1					< 0.1	< 0.1
9836	1,1-Dichloroethylene :- {1,1-Dichloroethene}	μg/l				< 0.1					< 0.1	< 0.1
9839	tert-Amyl methyl ether :- {TAME}	μg/l				< 0.1					< 0.1	< 0.1
9844	Ethyl tert-butyl ether :- {ETBE}	μg/l				< 0.1					< 0.1	< 0.1
9845	1,2-Dimethylbenzene :- {o-Xylene}	μg/l				< 0.1					< 0.1	< 0.1
9888	Styrene :- {Vinylbenzene}	μg/l				< 0.1					< 0.1	< 0.1
9901	Oxygen, Dissolved, % Saturation	%	58.3	62.6	69.7		88.2	82.7	84.8	84.1		93.1
9924	Oxygen, Dissolved as O2	mg/l	5.75	7.04	7.93		10.4	10.5	10.2	9.85		9.3

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sampling point Pix Bk.Outlet Reservoir U/S Letchworth

Determinands

Sampling results

Samples from 11 Oct 2021 to 2 Apr 2024

Samples from 14 Aug 2018 to 6 Jul 2021

sampling point
Pix Bk.Outlet Reservoir U/S Letchworth