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sampling point
Lee At Wheathampstead

Description LEE AT WHEATHAMPSTEAD
Sampling point ID TH-PLER0077
Type Freshwater – Rivers
Status open
Location easting northing: 517275 214361
lat lon: 51.815578, -0.300081
Area Hertfordshire And North London
Sub-Area L&W Herts & North London
Summary 271 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.

95 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
  • Al- Filtered
  • Alky pH 4.5
  • Aluminium-Al
  • Ammonia(N)
  • BOD ATU
  • BROMO-DCM
  • Benzene
  • BrClMethan
  • Bromobenzene
  • Bromoform
  • C - Org Filt
  • Ca Filtered
  • Carbon Tet
  • Carbon diS
  • Chlordbrmthn
  • Chloride Ion
  • Chlorobenzen
  • Chloroform
  • Chloromethan
  • Chromium -Cr
  • Cond @ 20C
  • Cond @ 25C
  • Cr Hex Filt
  • Cr- Filtered
  • DiClMe
  • Dibromomethn
  • ETBE
  • Ethenylbenzn
  • Ethylbenzene
  • Fe- Filt
  • HEXACHLORO 1
  • HxClEthane
  • IsoPropylBen
  • MTBE
  • Mg Filtered
  • Mn BLM Bio
  • Mn- Filtered
  • 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 271 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).

Samples from 8 Sep 2023 to 6 Jun 2024

NotationDeterminandUnits 8 Sep
2023
10:12		 6 Oct
2023
11:03		 6 Nov
2023
13:26		 4 Dec
2023
10:16		10 Jan
2024
09:38		 2 Feb
2024
13:01		 4 Mar
2024
09:50		 4 Apr
2024
16:03		 2 May
2024
12:59		 6 Jun
2024
11:53
0061pH7.817.847.757.687.927.97.77.917.827.84
0076Temperature of Water°C19.516.211.88.96.810.27.615.6
0077Conductivity at 25 Cμs/cm11481100851943887977710948
0111Ammoniacal Nitrogen as Nmg/l< 0.03< 0.030.170.520.038< 0.03< 0.030.033
0116Nitrogen, Total Oxidised as Nmg/l1314149.513148.413
0117Nitrate as Nmg/l131413.99.3613148.3712.9
0118Nitrite as Nmg/l0.0260.040.130.140.0290.0350.0290.068
0119Ammonia un-ionised as Nmg/l< 0.00071< 0.00060.002010.004220.00046< 0.00044< 0.000230.00063
0162Alkalinity to pH 4.5 as CaCO3mg/l210200160200200220170220
0180Orthophosphate, reactive as Pmg/l0.350.370.160.230.160.190.160.37
0239Calcium, Dissolvedmg/l120120130
0301Carbon, Organic, Dissolved as C :- {DOC}mg/l3.25.63.4
1049Carbon tetrachloride :- {Tetrachloromethane}μg/l< 0.1< 0.1< 0.1
1200Trihalomethanes : Total :- {THM}μg/l< 0.4< 0.4< 0.4
3164Chromiumμg/l1.61.81.2
32681,1,1-Trichloroethaneμg/l< 0.1< 0.1< 0.1
32691,1-Dichloroethaneμg/l< 0.1< 0.1< 0.1
32721,2-Dichloroethaneμg/l< 0.1< 0.1< 0.1
3282Bromodichloromethaneμg/l< 0.1< 0.1< 0.1
3283Bromoform :- {Tribromomethane}μg/l< 0.1< 0.1< 0.1
3290Chlorobenzeneμg/l< 0.1< 0.1< 0.1
3292Chlorodibromomethaneμg/l< 0.1< 0.1< 0.1
3328Tetrachloroethylene :- {Perchloroethylene}μg/l0.270.240.1
3334Trichloroethylene :- {Trichloroethene}μg/l< 0.1< 0.1< 0.1
3373Chloroform :- {Trichloromethane}μg/l< 0.1< 0.1< 0.1
3409Chromium, Dissolvedμg/l10.960.99
3781Benzeneμg/l< 0.1< 0.1< 0.1
3784Toluene :- {Methylbenzene}μg/l< 0.1< 0.1< 0.1
4117Ethylbenzeneμg/l< 0.1< 0.1< 0.1
65341,1,1,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1
6538cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}μg/l< 0.1< 0.1< 0.1
6539trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}μg/l< 0.1< 0.1< 0.1
6619Chromium Hexavalent, Dissolved :- {Cr VI}μg/l0.870.850.77
6656MTBE :- {Methyl tert-butyl ether}μg/l< 0.1< 0.1< 0.1
6715Vinyl chloride :- {Chloroethylene}μg/l< 0.1< 0.1< 0.1
6716Dimethylbenzene : Sum of isomers (1,3- 1,4-)μg/l< 0.2< 0.2< 0.2
75311,1,2,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1
98111,1,2-Trichloroethaneμg/l< 0.1< 0.1< 0.1
98361,1-Dichloroethylene :- {1,1-Dichloroethene}μg/l< 0.1< 0.1
9839tert-Amyl methyl ether :- {TAME}μg/l< 0.1< 0.1< 0.1
9844Ethyl tert-butyl ether :- {ETBE}μg/l< 0.1< 0.1< 0.1
98451,2-Dimethylbenzene :- {o-Xylene}μg/l< 0.1< 0.1< 0.1
9888Styrene :- {Vinylbenzene}μg/l< 0.1< 0.1< 0.1
9901Oxygen, Dissolved, % Saturation%83.386.485.382.590.196.488.493.9
9924Oxygen, Dissolved as O2mg/l7.638.479.219.541110.810.69.32

Samples from 2 Nov 2022 to 3 Aug 2023

NotationDeterminandUnits 2 Nov
2022
10:24		 7 Dec
2022
12:27		31 Jan
2023
16:30		22 Feb
2023
12:46		20 Mar
2023
09:38		21 Apr
2023
09:36		 3 May
2023
09:32		 2 Jun
2023
13:14		11 Jul
2023
12:54		 3 Aug
2023
11:49
0061pH7.77.947.957.837.647.747.817.867.857.86
0076Temperature of Water°C13.39.210.511.11111.51215.419.617.9
0077Conductivity at 25 Cμs/cm9511027101110559149569909911065800
0111Ammoniacal Nitrogen as Nmg/l< 0.030.0510.0430.250.270.0370.210.039< 0.030.071
0116Nitrogen, Total Oxidised as Nmg/l17211819141818192013
0117Nitrate as Nmg/l1720.91818.913.91817.918.92012.9
0118Nitrite as Nmg/l0.0390.0680.050.140.110.0320.150.0840.040.079
0119Ammonia un-ionised as Nmg/l< 0.000350.000770.000730.003360.002340.000420.002880.00077< 0.000790.00168
0162Alkalinity to pH 4.5 as CaCO3mg/l150170190200180190190190170150
0180Orthophosphate, reactive as Pmg/l0.690.250.250.310.180.390.340.320.40.29
0239Calcium, Dissolvedmg/l99120130130110
0301Carbon, Organic, Dissolved as C :- {DOC}mg/l5.24.53.94.33.9
1049Carbon tetrachloride :- {Tetrachloromethane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
1200Trihalomethanes : Total :- {THM}μg/l< 0.4< 0.4< 0.4< 0.40.43
3164Chromiumμg/l0.861.61.41.91.5
32681,1,1-Trichloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
32691,1-Dichloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
32721,2-Dichloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3282Bromodichloromethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3283Bromoform :- {Tribromomethane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3290Chlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3292Chlorodibromomethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3299Dichloromethane :- {Methylene Dichloride}μg/l< 0.5< 0.5< 0.5< 0.5< 0.5
3328Tetrachloroethylene :- {Perchloroethylene}μg/l0.10.110.160.40.16
3334Trichloroethylene :- {Trichloroethene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3373Chloroform :- {Trichloromethane}μg/l< 0.1< 0.1< 0.1< 0.10.13
3409Chromium, Dissolvedμg/l0.691.51.21.81.4
3781Benzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3783Dibromomethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
3784Toluene :- {Methylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
40491,4-Dichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
4117Ethylbenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
5234Hexachloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
55683-Chlorotoluene :- {3-Chloromethylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6376Chloromethane :- {Methyl Chloride}μg/l< 0.5< 0.5< 0.5< 0.5< 0.5
65341,1,1,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
65371,2-Dibromo-3-chloropropaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6538cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6539trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
65401,2-Dichloropropaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
65411,2,3-Trichloropropaneμg/l< 0.5< 0.5< 0.5< 0.5< 0.5
65421,3-Dichloropropaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6543cis-1,3-Dichloropropylene :- {cis-1,3-Dichloropropene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6544trans-1,3-Dichloropropylene :- {trans-1,3-Dichloropropene}μg/l< 0.5< 0.5< 0.5< 0.5< 0.5
65472-Chlorotoluene :- {1-Chloro-2-methylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
65784-Chlorotoluene :- {1-Chloro-4-methylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
65794-Isopropyltoluene :- {4-methyl-Isopropylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6604Bromobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6605Bromochloromethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6619Chromium Hexavalent, Dissolved :- {Cr VI}μg/l0.431.21.11.61.2
6648Hexachlorobutadieneμg/l< 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
6658n-ButylBenzene :- {1-Phenylbutane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6659n-Propylbenzene :- {1-Phenylpropane}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6690sec-Butylbenzene :- {1-Methylpropylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6697tert-Butylbenzene :- {(1,1-Dimethylethyl)benzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
6711Trichlorofluoromethaneμg/l< 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
6716Dimethylbenzene : Sum of isomers (1,3- 1,4-)μg/l< 0.2< 0.2< 0.2< 0.2< 0.2
67442,2-Dichloropropaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
75311,1,2,2-Tetrachloroethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
7574Isopropylbenzene :- {Methylethylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
8847Carbon Disulphideμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
90501,2,3-Trichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
90511,2,4-Trichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
90521,3,5-Trichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
91451,2-Dibromoethaneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
94561,2,4-Trimethylbenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
94571,2,3-Trimethylbenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
94581,3,5-Trimethylbenzene :- {Mesitylene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
96181,2-Dichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
96191,3-Dichlorobenzeneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
9669Naphthaleneμg/l< 0.1< 0.1< 0.1< 0.1< 0.1
96841,1-Dichloropropylene :- {1,1-Dichloropropene}μg/l< 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
98361,1-Dichloroethylene :- {1,1-Dichloroethene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
9839tert-Amyl methyl ether :- {TAME}μg/l< 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
98451,2-Dimethylbenzene :- {o-Xylene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
9888Styrene :- {Vinylbenzene}μg/l< 0.1< 0.1< 0.1< 0.1< 0.1
9901Oxygen, Dissolved, % Saturation%77.39093.990.182.388.186.4105100.192.6
9924Oxygen, Dissolved as O2mg/l8.0710.310.59.899.069.589.2910.59.158.76