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sampling point
Lee At Leagrave

Description LEE AT LEAGRAVE
Sampling point ID TH-PLER0068
Type Freshwater – Unspecified
Status open
Location easting northing: 506141 224313
lat lon: 51.907245, -0.458482
Area Hertfordshire And North London
Sub-Area L&W Herts & North London
Summary 188 samples taken between 2024 and 2000

Determinands

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.

83 determinands have been measured at this site
  • 1,1,1,2 -TET
  • 1,1,1-TCA
  • 1,1-Dichloro
  • 1,2 -DIBROMO
  • 1,2,3-TCB
  • 1,2,3-Trimet
  • 1,2,4-TCB
  • 1,2,4-Trimet
  • 1,2-DCB
  • 1,3 -DICHLOR
  • 1,3 -DICHLOR
  • 1,3 -DICHLOR
  • 1,3,5-TCB
  • 1,3-DCB
  • 1122TetClEth
  • 112TCEthan
  • 11DClEthan
  • 11DiClPropen
  • 12-DCA
  • 123TriClProp
  • 12DCPa
  • 12Dibromethn
  • 135TriMeBenz
  • 14Dichlrbnzn
  • 22DCPropan
  • 2Chlortoluen
  • 3Chlorotolun
  • 4 -ISO-PROPY
  • 4Chlorotolun
  • Action taken
  • Alky pH 4.5
  • Ammonia(N)
  • BOD ATU
  • BROMO-DCM
  • Benzene
  • BrClMethan
  • Bromobenzene
  • Bromoform
  • Carbon Tet
  • Carbon diS
  • Chlordbrmthn
  • Chloride Ion
  • Chlorobenzen
  • Chloroform
  • Chloromethan
  • Cond @ 25C
  • DiClMe
  • Dibromomethn
  • ETBE
  • Ethenylbenzn
  • Ethylbenzene
  • HEXACHLORO 1
  • HxClEthane
  • IsoPropylBen
  • MTBE
  • N Oxidised
  • NH3 un-ion
  • Naphthalene
  • Nitrate-N
  • Nitrite-N
  • O Diss %sat
  • Orthophospht
  • Oxygen Diss
  • SI-GQA
  • SecButylbenz
  • TAME
  • Temp Water
  • TertButylbnz
  • TetClEthene
  • Toluene
  • TrCFMethan
  • Trichloroeth
  • Trihalomethn
  • Type of Flow
  • Vinyl Cl
  • c12DClEthe
  • m-p-Xylene
  • nButylbenzne
  • nPropylbenzn
  • o-Xylene
  • pH
  • pH in-situ
  • t12DCEe

Sampling results

Displaying the twenty most recent samples. You can see all 188 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 11 Aug 2023 to 22 May 2024

NotationDeterminandUnits11 Aug
2023
10:00
7 Sep
2023
10:54
9 Oct
2023
11:04
8 Nov
2023
09:29
8 Dec
2023
09:51
3 Jan
2024
11:33
8 Feb
2024
12:13
6 Mar
2024
09:34
4 Apr
2024
12:37
22 May
2024
10:28
0061pH7.437.27.337.427.497.687.917.56
0076Temperature of Water°C15.115.713.510.699.86.49.6
0077Conductivity at 25 Cμs/cm907930937807873748252859
0111Ammoniacal Nitrogen as Nmg/l0.050.0360.0450.079< 0.03< 0.030.082< 0.03
0116Nitrogen, Total Oxidised as Nmg/l6.86.875.85.75.31.17
0117Nitrate as Nmg/l6.766.756.965.785.685.281.086.99
0118Nitrite as Nmg/l0.0370.0510.040.0250.0220.0170.0160.0097
0119Ammonia un-ionised as Nmg/l0.000360.000160.000230.0004< 0.00016< 0.000260.00094< 0.0002
0162Alkalinity to pH 4.5 as CaCO3mg/l25025025024022022060250
0180Orthophosphate, reactive as Pmg/l0.013< 0.010.0140.0270.0170.0260.0360.017
1049Carbon tetrachloride :- {Tetrachloromethane}μg/l< 0.1< 0.1
1200Trihalomethanes : Total :- {THM}μg/l0.4< 0.4
32681,1,1-Trichloroethaneμg/l0.3< 0.1
32691,1-Dichloroethaneμg/l0.2< 0.1
32721,2-Dichloroethaneμg/l< 0.1< 0.1
3282Bromodichloromethaneμg/l< 0.1< 0.1
3283Bromoform :- {Tribromomethane}μg/l< 0.1< 0.1
3290Chlorobenzeneμg/l< 0.1< 0.1
3292Chlorodibromomethaneμg/l< 0.1< 0.1
3328Tetrachloroethylene :- {Perchloroethylene}μg/l10.1
3334Trichloroethylene :- {Trichloroethene}μg/l0.64< 0.1
3373Chloroform :- {Trichloromethane}μg/l0.1< 0.1
3781Benzeneμg/l< 0.1< 0.1
3784Toluene :- {Methylbenzene}μg/l< 0.10.1
4117Ethylbenzeneμg/l< 0.1< 0.1
65341,1,1,2-Tetrachloroethaneμg/l< 0.1< 0.1
6538cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}μg/l0.88< 0.1
6539trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}μg/l< 0.1< 0.1
6656MTBE :- {Methyl tert-butyl ether}μg/l< 0.1< 0.1
6715Vinyl chloride :- {Chloroethylene}μg/l< 0.1< 0.1
6716Dimethylbenzene : Sum of isomers (1,3- 1,4-)μg/l< 0.2< 0.2
75311,1,2,2-Tetrachloroethaneμg/l< 0.1< 0.1
98111,1,2-Trichloroethaneμg/l< 0.1< 0.1
98361,1-Dichloroethylene :- {1,1-Dichloroethene}μg/l0.51< 0.1
9839tert-Amyl methyl ether :- {TAME}μg/l< 0.1< 0.1
9844Ethyl tert-butyl ether :- {ETBE}μg/l< 0.1< 0.1
98451,2-Dimethylbenzene :- {o-Xylene}μg/l< 0.1< 0.1
9888Styrene :- {Vinylbenzene}μg/l< 0.1< 0.1
9901Oxygen, Dissolved, % Saturation%73.469.464.172.672.384.9106.883.7
9924Oxygen, Dissolved as O2mg/l7.376.886.668.068.349.6113.19.52

Samples from 10 Oct 2022 to 5 Jul 2023

NotationDeterminandUnits10 Oct
2022
09:46
9 Nov
2022
11:22
6 Dec
2022
11:52
24 Jan
2023
09:12
10 Feb
2023
10:23
10 Mar
2023
12:54
26 Apr
2023
08:53
4 May
2023
09:03
5 Jun
2023
10:24
5 Jul
2023
09:19
0061pH7.977.557.467.557.587.937.617.637.447.43
0076Temperature of Water°C12.111.59.66.77.56.39.310.211.913.5
0077Conductivity at 25 Cμs/cm821892910887891617880872900437
0111Ammoniacal Nitrogen as Nmg/l0.150.0520.0660.0350.0350.130.035< 0.030.0310.038
0116Nitrogen, Total Oxidised as Nmg/l0.9277.57.37.61.77.37.27.42.5
0117Nitrate as Nmg/l0.8846.967.487.297.591.687.277.187.372.48
0118Nitrite as Nmg/l0.0360.0450.0250.0110.010.0220.0310.0210.0290.022
0119Ammonia un-ionised as Nmg/l0.002980.000380.000340.000180.00020.001540.00025< 0.000240.000180.00025
0162Alkalinity to pH 4.5 as CaCO3mg/l3924024023025081240240250130
0180Orthophosphate, reactive as Pmg/l0.0950.0210.0190.0140.0140.032< 0.01< 0.01< 0.010.031
1049Carbon tetrachloride :- {Tetrachloromethane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
1200Trihalomethanes : Total :- {THM}μg/l< 0.40.420.440.40.4< 0.4
32681,1,1-Trichloroethaneμg/l< 0.10.40.540.420.38< 0.1
32691,1-Dichloroethaneμg/l< 0.10.290.430.290.29< 0.1
32721,2-Dichloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3282Bromodichloromethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3283Bromoform :- {Tribromomethane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3290Chlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3292Chlorodibromomethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3328Tetrachloroethylene :- {Perchloroethylene}μg/l< 0.10.110.12< 0.1< 0.1< 0.1
3334Trichloroethylene :- {Trichloroethene}μg/l< 0.10.811.41.110.19
3373Chloroform :- {Trichloromethane}μg/l< 0.10.120.140.10.1< 0.1
3781Benzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
3784Toluene :- {Methylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
4117Ethylbenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
65341,1,1,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
6538cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}μg/l< 0.11.32.21.61.60.28
6539trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
6656MTBE :- {Methyl tert-butyl ether}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
6715Vinyl chloride :- {Chloroethylene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
6716Dimethylbenzene : Sum of isomers (1,3- 1,4-)μg/l< 0.2< 0.2< 0.2< 0.2< 0.2< 0.2
75311,1,2,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
98111,1,2-Trichloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
98361,1-Dichloroethylene :- {1,1-Dichloroethene}μg/l< 0.10.550.990.70.710.15
9839tert-Amyl methyl ether :- {TAME}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
9844Ethyl tert-butyl ether :- {ETBE}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
98451,2-Dimethylbenzene :- {o-Xylene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
9888Styrene :- {Vinylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1< 0.1
9901Oxygen, Dissolved, % Saturation%78.851.352.578.178.587.880.882.883.869
9924Oxygen, Dissolved as O2mg/l8.455.585.979.549.410.89.269.289.037.17