sampling point
Alderbourne Above Colne Brook
| Description | ALDERBOURNE ABOVE COLNE BROOK |
|---|---|
| Sampling point ID | TH-PCNR0001 |
| Type | Freshwater – Rivers |
| Status | open |
| Location |
easting northing: 503949 183344 lat lon: 51.539429, -0.502549 |
| Area | Hertfordshire And North London |
| Sub-Area | L&W Herts & North London |
| Summary | 192 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.
92 determinands have been measured at this site
- 11Cl-PF3OUdS
- 3:3 FTCA
- 4-nonPhenol
- 4:2 FTSA
- 5:3 FTCA
- 6:2 FTSA
- 7:3 FTCA
- 8:2 FTSA
- 9Cl-PF3ONS
- ADONA
- Action taken
- Alky pH 4.5
- Ammonia(N)
- AmoniaTotYSI
- B-[a]-pyrene
- B-[b]-fluora
- B-[ghi]-pery
- B-[k]-fluora
- BOD ATU
- C - Org Filt
- CHLOROPHYLL
- Ca Filtered
- Calcium - Ca
- Cd Filtered
- Chloride Ion
- Cond @ 25C
- Cr- Filtered
- Cu Filtered
- DEHP
- EtFOSA
- EtFOSAA-B
- EtFOSAA-L
- FBSA
- FOSA
- Fe- Filt
- Fluoranthene
- HFPO-DA
- Hardness
- Ind123pyrene
- Magnesium-Mg
- MeFOSAA-B
- MeFOSAA-L
- Mn- Filtered
- N Oxidised
- N-MeFOSA
- NFDHA
- NH3 un-ion
- Ni- Filtered
- Nitrate-N
- Nitrite-N
- O Diss %sat
- Orthophospht
- Oxygen Diss
- PFBA
- PFBS
- PFDS
- PFDoS
- PFEESA
- PFHpS
- PFHxS-B
- PFHxS-L
- PFHxSA
- PFMOBA
- PFMOPrA
- PFNS
- PFODA
- PFOS (B)
- PFOS (L)
- PFPeS
- PFTrDA
- PFUnDS
- PFdecncAcid
- PFdodencAcid
- PFecHS
- PFheptncAcid
- PFhexncAcid
- PFnonncAcid
- PFoctncAcid
- PFpentncAcid
- PFtetdncAcid
- PFundencAcid
- Pb Filtered
- SI-GQA
- Sld Sus@105C
- Temp Water
- Triclosan
- TurbidityNTU
- Type of Flow
- Zn- Filtered
- pH
- pH in-situ
- ptOctylPheno
Sampling results
Displaying the twenty most recent samples. You can see all 192 sample results (note that in some cases this may take a considerable time, and use significant data bandwidth).
Samples from 7 Dec 2023 to 19 Aug 2024
| Notation | Determinand | Units | 7 Dec 2023 12:08 | 16 Jan 2024 12:25 | 22 Feb 2024 09:28 | 21 Mar 2024 11:09 | 5 Apr 2024 10:46 | 17 Apr 2024 09:59 | 13 May 2024 09:47 | 17 Jun 2024 10:37 | 24 Jul 2024 11:15 | 19 Aug 2024 10:30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.8 | 7.87 | 7.61 | 7.82 | 7.93 | 8.02 | 8.01 | 7.92 | 8 | ||
| 0076 | Temperature of Water | °C | 7 | 3.9 | 9.3 | 10.9 | 8.8 | 14.2 | 13.3 | 15.6 | 13.9 | |
| 0077 | Conductivity at 25 C | μs/cm | 776 | 696 | 667 | 674 | 665 | 643 | 626 | 620 | 622 | |
| 0085 | BOD : 5 Day ATU | mg/l | 1.3 | 1.5 | 1.8 | 1.2 | 1.4 | < 1 | 1.1 | |||
| 0111 | Ammoniacal Nitrogen as N | mg/l | 0.049 | 0.12 | 0.05 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 3.3 | 3.2 | 2.7 | 3.1 | 2.7 | 2.8 | 2.9 | 2.9 | 3 | |
| 0117 | Nitrate as N | mg/l | 3.28 | 3.18 | 2.68 | 3.09 | 2.69 | 2.79 | 2.89 | 2.89 | 3 | |
| 0118 | Nitrite as N | mg/l | 0.023 | 0.024 | 0.024 | 0.013 | 0.0095 | 0.012 | 0.0066 | 0.0058 | < 0.004 | |
| 0119 | Ammonia un-ionised as N | mg/l | 0.00045 | 0.00104 | 0.00036 | < 0.00039 | < 0.00043 | < 0.00074 | < 0.0007 | < 0.00069 | < 0.00073 | |
| 0135 | Solids, Suspended at 105 C | mg/l | 6.3 | 6.8 | 30 | 23 | 19 | 10 | 12 | 7.4 | 16 | |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 200 | 210 | 180 | 210 | 220 | 230 | 230 | 240 | 250 | |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.022 | 0.02 | 0.043 | 0.029 | 0.018 | 0.035 | 0.031 | 0.042 | 0.031 | |
| 2921 | Perfluoro-3-methoxypropanoic acid | μg/l | < 0.0005 | |||||||||
| 2922 | Perfluoro-3,6-dioxaheptanoic acid | μg/l | < 0.0005 | |||||||||
| 2923 | Perfluoro(4-methoxybutanoic) acid | μg/l | < 0.0005 | |||||||||
| 2924 | Perfluoro(2-ethoxyethane)sulfonic acid | μg/l | < 0.0005 | |||||||||
| 2925 | 3-Perfluoroheptylpropanoic acid | μg/l | < 0.0005 | |||||||||
| 2926 | 3:3 Fluorotelomer carboxylic acid | μg/l | < 0.004 | |||||||||
| 2942 | 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) | μg/l | < 0.001 | |||||||||
| 2943 | 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) | μg/l | < 0.002 | |||||||||
| 2944 | Perfluorohexanesulfonic acid (B) | μg/l | 0.0011 | |||||||||
| 2953 | Perfluoroundecane sulfonic acid | μg/l | < 0.004 | |||||||||
| 2955 | Perfluorotridecanoic acid | μg/l | < 0.005 | |||||||||
| 2957 | Perfluoropentanesulfonic acid | μg/l | 0.00087 | |||||||||
| 2959 | Perfluorooctanesulfonic acid (linear) | μg/l | 0.0021 | |||||||||
| 2960 | Perfluorooctanesulfonic acid (branched) | μg/l | 0.0041 | |||||||||
| 2961 | Perfluorooctanesulfonamide | μg/l | < 0.001 | |||||||||
| 2962 | Perfluorooctadecanoic acid | μg/l | < 0.002 | |||||||||
| 2963 | Perfluorononanesulfonic acid | μg/l | < 0.0005 | |||||||||
| 2964 | Perfluorohexanesulfonic acid (L) | μg/l | 0.0046 | |||||||||
| 2965 | Perfluorohexanesulfonamide | μg/l | < 0.0005 | |||||||||
| 2967 | Perfluoroheptanesulfonic acid | μg/l | < 0.0005 | |||||||||
| 2968 | Perfluorododecane sulfonic acid | μg/l | < 0.005 | |||||||||
| 2969 | Perfluorodecanesulfonic acid | μg/l | < 0.002 | |||||||||
| 2970 | Perfluorobutylsulfonamide (perfluorobutane sulfonamide) | μg/l | 0.0018 | |||||||||
| 2972 | Perfluorobutanesulfonic acid | μg/l | 0.0063 | |||||||||
| 2973 | Perfluoro-4-ethylcyclohexanesulfonic acid | μg/l | 0.00059 | |||||||||
| 2975 | N-methylperfluorooctanesulfonamide | μg/l | < 0.002 | |||||||||
| 2977 | N-Ethylperfluorooctanesulfonamide | μg/l | < 0.002 | |||||||||
| 2981 | Hexafluoropropylene oxide dimer acid (Gen X) | μg/l | < 0.001 | |||||||||
| 2982 | 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid | μg/l | < 0.0005 | |||||||||
| 2983 | 8:2 Fluorotelomer sulfonic acid | μg/l | < 0.001 | |||||||||
| 2984 | 6:2 Fluorotelomer sulfonic acid | μg/l | < 0.001 | |||||||||
| 2987 | 4:2 Fluorotelomer sulfonic acid | μg/l | < 0.0005 | |||||||||
| 2988 | 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | μg/l | < 0.005 | |||||||||
| 2989 | 2H,2H,3H,3H-Perfluorooctanoic acid | μg/l | < 0.001 | |||||||||
| 2990 | 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) | μg/l | < 0.0005 | |||||||||
| 2991 | 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) | μg/l | < 0.001 | |||||||||
| 2993 | 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) | μg/l | < 0.001 | |||||||||
| 2995 | Perfluorobutanoic acid | μg/l | 0.012 | |||||||||
| 7887 | Chlorophyll : Acetone Extract | μg/l | 0.75 | 4 | 9.8 | 6.1 | 4.4 | 3 | 1.6 | 1.9 | 1.5 | |
| 8887 | Perfluoropentanoic acid | μg/l | 0.0098 | |||||||||
| 8888 | Perfluorohexanoic acid | μg/l | 0.0078 | |||||||||
| 8889 | Perfluoroheptanoic acid | μg/l | 0.0046 | |||||||||
| 8890 | Perfluorooctanoic acid | μg/l | 0.0078 | |||||||||
| 8891 | Perfluorononanoic acid | μg/l | < 0.001 | |||||||||
| 8892 | Perfluorodecanoic acid | μg/l | < 0.002 | |||||||||
| 8893 | Perfluoroundecanoic acid | μg/l | < 0.002 | |||||||||
| 8894 | Perfluorododecanoic acid | μg/l | < 0.002 | |||||||||
| 8895 | Perfluorotetradecanoic acid | μg/l | < 0.006 | |||||||||
| 9901 | Oxygen, Dissolved, % Saturation | % | 84 | 92.5 | 87.3 | 95.7 | 87.9 | 86.5 | 82.3 | 79.7 | 82.2 | |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 10.2 | 12.1 | 10 | 10.6 | 10.2 | 8.85 | 8.59 | 7.91 | 8.47 |
Samples from 6 Feb 2023 to 22 Nov 2023
| Notation | Determinand | Units | 6 Feb 2023 11:06 | 3 Mar 2023 13:51 | 5 Apr 2023 11:13 | 26 May 2023 11:43 | 20 Jun 2023 10:33 | 24 Jul 2023 13:01 | 1 Aug 2023 11:28 | 1 Sep 2023 11:50 | 18 Oct 2023 12:53 | 22 Nov 2023 10:58 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0061 | pH | 7.98 | 8.16 | 7.87 | 8.06 | 7.88 | 7.97 | 8.01 | 7.88 | 7.98 | 7.7 | |
| 0076 | Temperature of Water | °C | 5.9 | 7.1 | 8.8 | 12.5 | 15.5 | 14.7 | 14.5 | 14.5 | 11.2 | 8.8 |
| 0077 | Conductivity at 25 C | μs/cm | 725 | 703 | 739 | 666 | 629 | 636 | 664 | 555 | 658 | 688 |
| 0085 | BOD : 5 Day ATU | mg/l | 1.1 | |||||||||
| 0111 | Ammoniacal Nitrogen as N | mg/l | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | < 0.03 | 0.046 | < 0.03 | < 0.03 |
| 0116 | Nitrogen, Total Oxidised as N | mg/l | 4.5 | 4.6 | 3.6 | 3.9 | 3.3 | 3.2 | 3 | 2.9 | 3.3 | 2.8 |
| 0117 | Nitrate as N | mg/l | 4.48 | 4.58 | 3.59 | 3.89 | 3.29 | 3.19 | 2.99 | 2.87 | 3.3 | 2.79 |
| 0118 | Nitrite as N | mg/l | 0.019 | 0.017 | 0.014 | 0.0095 | 0.0077 | 0.0067 | 0.0064 | 0.031 | < 0.004 | 0.01 |
| 0119 | Ammonia un-ionised as N | mg/l | < 0.00039 | < 0.00044 | < 0.00037 | < 0.00066 | < 0.00062 | < 0.00072 | < 0.00076 | 0.00089 | < 0.00057 | < 0.00025 |
| 0135 | Solids, Suspended at 105 C | mg/l | 11 | 17 | 6.8 | 8.7 | 6.5 | 7.2 | 9 | 17 | 5.2 | 5.6 |
| 0162 | Alkalinity to pH 4.5 as CaCO3 | mg/l | 220 | 240 | 190 | 230 | 240 | 220 | 220 | 180 | 230 | 220 |
| 0180 | Orthophosphate, reactive as P | mg/l | 0.02 | 0.026 | 0.023 | 0.02 | 0.039 | 0.031 | 0.032 | 0.039 | 0.024 | 0.022 |
| 2921 | Perfluoro-3-methoxypropanoic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2922 | Perfluoro-3,6-dioxaheptanoic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2923 | Perfluoro(4-methoxybutanoic) acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2924 | Perfluoro(2-ethoxyethane)sulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2925 | 3-Perfluoroheptylpropanoic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2926 | 3:3 Fluorotelomer carboxylic acid | μg/l | < 0.004 | < 0.004 | ||||||||
| 2942 | 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) | μg/l | < 0.001 | < 0.001 | ||||||||
| 2943 | 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) | μg/l | < 0.002 | < 0.002 | ||||||||
| 2944 | Perfluorohexanesulfonic acid (B) | μg/l | 0.00069 | < 0.0005 | ||||||||
| 2953 | Perfluoroundecane sulfonic acid | μg/l | < 0.004 | < 0.004 | ||||||||
| 2955 | Perfluorotridecanoic acid | μg/l | < 0.005 | < 0.005 | ||||||||
| 2957 | Perfluoropentanesulfonic acid | μg/l | 0.00069 | < 0.0005 | ||||||||
| 2959 | Perfluorooctanesulfonic acid (linear) | μg/l | 0.0024 | 0.0097 | ||||||||
| 2960 | Perfluorooctanesulfonic acid (branched) | μg/l | 0.0033 | 0.0028 | ||||||||
| 2961 | Perfluorooctanesulfonamide | μg/l | < 0.001 | < 0.001 | ||||||||
| 2962 | Perfluorooctadecanoic acid | μg/l | < 0.002 | < 0.002 | ||||||||
| 2963 | Perfluorononanesulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2964 | Perfluorohexanesulfonic acid (L) | μg/l | 0.0039 | 0.0025 | ||||||||
| 2965 | Perfluorohexanesulfonamide | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2967 | Perfluoroheptanesulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2968 | Perfluorododecane sulfonic acid | μg/l | < 0.005 | < 0.005 | ||||||||
| 2969 | Perfluorodecanesulfonic acid | μg/l | < 0.002 | < 0.002 | ||||||||
| 2970 | Perfluorobutylsulfonamide (perfluorobutane sulfonamide) | μg/l | 0.0012 | 0.00062 | ||||||||
| 2972 | Perfluorobutanesulfonic acid | μg/l | 0.0041 | 0.002 | ||||||||
| 2973 | Perfluoro-4-ethylcyclohexanesulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2975 | N-methylperfluorooctanesulfonamide | μg/l | < 0.002 | < 0.002 | ||||||||
| 2977 | N-Ethylperfluorooctanesulfonamide | μg/l | < 0.002 | < 0.002 | ||||||||
| 2981 | Hexafluoropropylene oxide dimer acid (Gen X) | μg/l | < 0.001 | < 0.001 | ||||||||
| 2982 | 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2983 | 8:2 Fluorotelomer sulfonic acid | μg/l | < 0.001 | < 0.001 | ||||||||
| 2984 | 6:2 Fluorotelomer sulfonic acid | μg/l | < 0.001 | 0.0019 | ||||||||
| 2987 | 4:2 Fluorotelomer sulfonic acid | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2988 | 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | μg/l | < 0.005 | < 0.005 | ||||||||
| 2989 | 2H,2H,3H,3H-Perfluorooctanoic acid | μg/l | < 0.001 | < 0.001 | ||||||||
| 2990 | 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) | μg/l | < 0.0005 | < 0.0005 | ||||||||
| 2991 | 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) | μg/l | < 0.001 | < 0.001 | ||||||||
| 2993 | 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) | μg/l | < 0.001 | < 0.001 | ||||||||
| 2995 | Perfluorobutanoic acid | μg/l | 0.0091 | 0.016 | ||||||||
| 7887 | Chlorophyll : Acetone Extract | μg/l | 3.2 | 9.3 | 2 | 4.2 | 2.1 | 1.7 | 2 | 5.5 | 0.62 | 3.3 |
| 8887 | Perfluoropentanoic acid | μg/l | 0.006 | 0.0051 | ||||||||
| 8888 | Perfluorohexanoic acid | μg/l | 0.0057 | 0.0048 | ||||||||
| 8889 | Perfluoroheptanoic acid | μg/l | 0.0031 | 0.0028 | ||||||||
| 8890 | Perfluorooctanoic acid | μg/l | 0.0079 | 0.01 | ||||||||
| 8891 | Perfluorononanoic acid | μg/l | < 0.001 | < 0.001 | ||||||||
| 8892 | Perfluorodecanoic acid | μg/l | < 0.002 | < 0.002 | ||||||||
| 8893 | Perfluoroundecanoic acid | μg/l | < 0.002 | < 0.002 | ||||||||
| 8894 | Perfluorododecanoic acid | μg/l | < 0.002 | < 0.002 | ||||||||
| 8895 | Perfluorotetradecanoic acid | μg/l | < 0.006 | < 0.006 | ||||||||
| 9901 | Oxygen, Dissolved, % Saturation | % | 90 | 94.7 | 94.4 | 90.9 | 72 | 78.8 | 82.1 | 75.4 | 84.8 | 81.3 |
| 9924 | Oxygen, Dissolved as O2 | mg/l | 11.2 | 11.5 | 10.9 | 9.66 | 7.16 | 7.98 | 8.35 | 7.67 | 9.29 | 9.43 |