Gretton Brook Corby Road
EA name: GRETTON BK. CORBY ROAD
Environment Agency sampling point AN-GRET003H · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)
These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.
Where and when
- Last sampled
- 1 Jul 2026, 13:053 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 14 since 27 Mar 2026 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 490644, 291973As published, to the nearest 1 m. Open in a map
- River, by its own name
- Gretton Brook
- River, by the map
- Gretton BrookPlaced on the river its name gives, 227 m from the line.
- Next gauge downstream
- Fotheringhay On the Willow Brook · 23 km along the riverFOTHERINGHAY GS 23 km along the river
- Why it was sampled
- Unplanned reactive monitoring (pollution incidents) (11 samples)
Planned investigation (local monitoring) (3 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
41.2%
Sampled 1 Jul 2026, 3 months ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 41.2 | 41.2% |
| 16 Jun 2026, 12:04 | 45.6 | 45.6% |
| 27 May 2026, 11:08 | 69.2 | 69.2% |
| 26 May 2026, 09:48 | 45.4 | 45.4% |
| 13 May 2026, 11:23 | 74.5 | 74.5% |
| 13 May 2026, 11:10 | 85.2 | 85.2% |
| 7 May 2026, 11:03 | 55 | 55% |
| 7 May 2026, 10:52 | 51.2 | 51.2% |
| 22 Apr 2026, 10:57 | 60.5 | 60.5% |
| 22 Apr 2026, 10:49 | 71 | 71% |
| 10 Apr 2026, 09:55 | 54.4 | 54.4% |
| 7 Apr 2026, 11:45 | 56.5 | 56.5% |
| 7 Apr 2026, 11:40 | 77.2 | 77.2% |
| 27 Mar 2026, 11:50 | 91 | 91% |
Dissolved oxygen
as O2 · code 9924 · mg/l
3.95 mg/l
Sampled 1 Jul 2026, 3 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 3.95 | 3.95 mg/l |
| 16 Jun 2026, 12:04 | 4.61 | 4.61 mg/l |
| 26 May 2026, 09:48 | 4.36 | 4.36 mg/l |
Water temperature
code 0076 · °C
17.2 °C
Sampled 1 Jul 2026, 3 months ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 17.2 | 17.2 °C |
| 16 Jun 2026, 12:04 | 14.7 | 14.7 °C |
| 27 May 2026, 11:08 | 18.3 | 18.3 °C |
| 26 May 2026, 09:48 | 17.2 | 17.2 °C |
| 13 May 2026, 11:23 | 10.02 | 10.02 °C |
| 13 May 2026, 11:10 | 10.01 | 10.01 °C |
| 7 May 2026, 11:03 | 10.7 | 10.7 °C |
| 7 May 2026, 10:52 | 10.5 | 10.5 °C |
| 22 Apr 2026, 10:57 | 9.7 | 9.7 °C |
| 22 Apr 2026, 10:49 | 9.4 | 9.4 °C |
| 10 Apr 2026, 09:55 | 8.7 | 8.7 °C |
| 7 Apr 2026, 11:45 | 9 | 9 °C |
| 7 Apr 2026, 11:40 | 10.3 | 10.3 °C |
| 27 Mar 2026, 11:50 | 9.1 | 9.1 °C |
pH
code 0061
10.5
Sampled 1 Jul 2026, 3 months ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 10.5 | 10.5 |
| 16 Jun 2026, 12:04 | 10.86 | 10.86 |
| 27 May 2026, 11:08 | 8.12 | 8.12 |
| 26 May 2026, 09:48 | 9.8 | 9.8 |
| 13 May 2026, 11:23 | 9.74 | 9.74 |
| 13 May 2026, 11:10 | 9.28 | 9.28 |
| 7 May 2026, 11:03 | 10.17 | 10.17 |
| 7 May 2026, 10:52 | 10.15 | 10.15 |
| 22 Apr 2026, 10:57 | 10.19 | 10.19 |
| 22 Apr 2026, 10:49 | 9.32 | 9.32 |
| 10 Apr 2026, 09:55 | 10.28 | 10.28 |
| 7 Apr 2026, 11:45 | 10.1 | 10.1 |
| 7 Apr 2026, 11:40 | 8.94 | 8.94 |
| 27 Mar 2026, 11:50 | 9.1 | 9.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
1 mg/l
Sampled 1 Jul 2026, 3 months ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 1 | 1 mg/l |
| 16 Jun 2026, 12:04 | 1.3 | 1.3 mg/l |
| 27 May 2026, 11:08 | 0.17 | 0.17 mg/l |
| 26 May 2026, 09:48 | 0.65 | 0.65 mg/l |
| 13 May 2026, 11:23 | 0.66 | 0.66 mg/l |
| 13 May 2026, 11:10 | 0.53 | 0.53 mg/l |
| 7 May 2026, 11:03 | 0.72 | 0.72 mg/l |
| 7 May 2026, 10:52 | 0.71 | 0.71 mg/l |
| 22 Apr 2026, 10:57 | 0.71 | 0.71 mg/l |
| 22 Apr 2026, 10:49 | 0.3 | 0.3 mg/l |
| 10 Apr 2026, 09:55 | 0.77 | 0.77 mg/l |
| 7 Apr 2026, 11:45 | 0.89 | 0.89 mg/l |
| 7 Apr 2026, 11:40 | 0.3 | 0.3 mg/l |
| 27 Mar 2026, 11:50 | 0.33 | 0.33 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.46 mg/l
Sampled 1 Jul 2026, 3 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 1.46 | 1.46 mg/l |
| 16 Jun 2026, 12:04 | 0.91 | 0.91 mg/l |
| 26 May 2026, 09:48 | 1.17 | 1.17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.4 mg/l
Sampled 1 Jul 2026, 3 months ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 0.4 | 0.4 mg/l |
| 16 Jun 2026, 12:04 | 0.34 | 0.34 mg/l |
| 27 May 2026, 11:08 | 0.16 | 0.16 mg/l |
| 26 May 2026, 09:48 | 0.43 | 0.43 mg/l |
| 13 May 2026, 11:23 | 0.4 | 0.4 mg/l |
| 13 May 2026, 11:10 | 0.45 | 0.45 mg/l |
| 7 May 2026, 11:03 | 0.5 | 0.5 mg/l |
| 7 May 2026, 10:52 | 0.46 | 0.46 mg/l |
| 22 Apr 2026, 10:57 | 0.31 | 0.31 mg/l |
| 22 Apr 2026, 10:49 | 0.49 | 0.49 mg/l |
| 10 Apr 2026, 09:55 | 0.054 | 0.054 mg/l |
| 7 Apr 2026, 11:45 | 0.033 | 0.033 mg/l |
| 7 Apr 2026, 11:40 | 0.3 | 0.3 mg/l |
| 27 Mar 2026, 11:50 | 0.21 | 0.21 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1174 µS/cm
Sampled 1 Jul 2026, 3 months ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 13:05 | 1174 | 1174 µS/cm |
| 16 Jun 2026, 12:04 | 1280 | 1280 µS/cm |
| 26 May 2026, 09:48 | 1002 | 1002 µS/cm |
Everything measured here
240 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.
Show all 240 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 14 | Mar 2026 – Jul 2026 | 41.2% 1 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 3 | May 2026 – Jul 2026 | 3.95 mg/l 1 Jul 2026 |
| Temperature of Water 0076 | River water | 14 | Mar 2026 – Jul 2026 | 17.2 °C 1 Jul 2026 |
| pH 0061 | River water | 14 | Mar 2026 – Jul 2026 | 10.5 1 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 14 | Mar 2026 – Jul 2026 | 1 mg/l 1 Jul 2026 |
| Nitrate as N 0117 | River water | 3 | May 2026 – Jul 2026 | 1.46 mg/l 1 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 14 | Mar 2026 – Jul 2026 | 0.4 mg/l 1 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 3 | May 2026 – Jul 2026 | 1174 µS/cm 1 Jul 2026 |
| (Perfluorohexanesulfonyl)[3-(trimethylazaniumyl)propyl]azanide 2890 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 1,1,1-Trichloroethane 3268 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,1,2-Trichloroethane 9811 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,1-Dichloroethane 3269 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,1-Dichloroethylene :- {1,1-Dichloroethene} 9836 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,1-Dichloropropylene :- {1,1-Dichloropropene} 9684 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2,3-Trichloropropane 6541 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2,3-Trimethylbenzene 9457 | River water | 2 | May 2026 – Jul 2026 | 0.4 µg/l 1 Jul 2026 |
| 1,2,4-Trimethylbenzene 9456 | River water | 2 | May 2026 – Jul 2026 | 0.31 µg/l 1 Jul 2026 |
| 1,2-Dibromo-3-chloropropane 6537 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2-Dibromoethane 9145 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2-Dichlorobenzene 9618 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2-Dichloroethane 3272 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2-Dichloropropane 6540 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,2-Dimethylbenzene :- {o-Xylene} 9845 | River water | 2 | May 2026 – Jul 2026 | 0.5 µg/l 1 Jul 2026 |
| 1,3,5-Trimethylbenzene :- {Mesitylene} 9458 | River water | 2 | May 2026 – Jul 2026 | 0.44 µg/l 1 Jul 2026 |
| 1,3-Dichlorobenzene 9619 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,3-Dichloropropane 6542 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 1,4-Dichlorobenzene 4049 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2,3-Dichlorophenol 9453 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,3-Dimethylphenol :- {2,3-Xylenol} 9451 | River water | 1 | Apr 2026 – Apr 2026 | 0.27 µg/l 10 Apr 2026 |
| 2,4,5-Trichlorophenol 9818 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,4,6-Trichlorophenol 9819 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,4-Dichlorophenol 9816 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,4-Dimethylphenol :- {2,4-Xylenol} 3343 | River water | 1 | Apr 2026 – Apr 2026 | 0.13 µg/l 10 Apr 2026 |
| 2,5-Dichlorophenol 9091 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,5-Dimethylphenol :- {2,5-Xylenol} 9094 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,6-Dichlorophenol 9817 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2,6-Dimethylphenol :- {2,6-Xylenol} 6569 | River water | 1 | Apr 2026 – Apr 2026 | 0.53 µg/l 10 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Jun 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Jun 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 2-Chlorophenol 9814 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2-Chlorotoluene :- {1-Chloro-2-methylbenzene} 6547 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 2-Ethyl phenol 9454 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2-Methylphenol :- {o-Cresol} 5562 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | May 2026 – Jul 2026 | 0.0015 µg/l 1 Jul 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 3,4-Dimethylphenol :- {3,4-Xylenol} 6577 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 3,5-Dimethylphenol :- {3,5-Xylenol} 5558 | River water | 1 | Apr 2026 – Apr 2026 | 0.1 µg/l 10 Apr 2026 |
| 3-Chlorophenol 9703 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 3-Chlorotoluene :- {3-Chloromethylbenzene} 5568 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 3-Methylphenol :- {m-Cresol} 5561 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 4-Chloro-3,5-dimethylphenol :- {PCMX} 6584 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 4-Chloro-3-methylphenol :- {p-Chloro-m-cresol} 3342 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 4-Chlorophenol 9815 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 4-Chlorotoluene :- {1-Chloro-4-methylbenzene} 6578 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 4-Isopropyltoluene :- {4-methyl-Isopropylbenzene} 6579 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| 4-Methylphenol :- {p-Cresol} 5560 | River water | 1 | Apr 2026 – Apr 2026 | below 0.02 µg/l 10 Apr 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 3 | May 2026 – Jul 2026 | 0.0048 µg/l 1 Jul 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | May 2026 – Jul 2026 | 0.091 µg/l 1 Jul 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 2 | May 2026 – Jun 2026 | below 0.004 µg/l 16 Jun 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | May 2026 – Jul 2026 | 0.0032 µg/l 1 Jul 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Acenaphthene 7395 | River water | 2 | May 2026 – Jun 2026 | 0.53 µg/l 16 Jun 2026 |
| Acenaphthylene 8311 | River water | 2 | Jun 2026 – Jul 2026 | 0.13 µg/l 1 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 3 | May 2026 – Jul 2026 | 320 mg/l 1 Jul 2026 |
| Aluminium 6057 | River water | 3 | Mar 2026 – Apr 2026 | 930 µg/l 7 Apr 2026 |
| Aluminium, Dissolved 6037 | River water | 14 | Mar 2026 – Jul 2026 | 660 µg/l 1 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 14 | Mar 2026 – Jul 2026 | 0.0308 mg/l 1 Jul 2026 |
| Anthracene 6753 | River water | 3 | May 2026 – Jul 2026 | 0.12 µg/l 1 Jul 2026 |
| Arsenic, Dissolved 6045 | River water | 3 | May 2026 – Jul 2026 | 17 µg/l 1 Jul 2026 |
| Atrazine 3002 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Atrazine-desethyl :- {Atrazine-de-ethyl} 8804 | River water | 3 | May 2026 – Jul 2026 | below 0.04 µg/l 1 Jul 2026 |
| Atrazine-desisopropyl :- {Atrazine de-isopropyl} 8997 | River water | 3 | May 2026 – Jul 2026 | below 0.04 µg/l 1 Jul 2026 |
| Azinphos-ethyl 9863 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Azinphos-methyl 9715 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Bendiocarb 9338 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Benzene 3781 | River water | 2 | May 2026 – Jul 2026 | 0.44 µg/l 1 Jul 2026 |
| Benzo(a)Anthracene 0772 | River water | 2 | May 2026 – Jun 2026 | 0.013 µg/l 16 Jun 2026 |
| Benzo(a)Pyrene 6399 | River water | 3 | May 2026 – Jul 2026 | 0.15 µg/l 1 Jul 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 2 | May 2026 – Jun 2026 | 0.013 µg/l 16 Jun 2026 |
| Benzo(e)Pyrene 8940 | River water | 1 | Jun 2026 – Jun 2026 | below 0.01 µg/l 16 Jun 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 3 | May 2026 – Jul 2026 | 0.17 µg/l 1 Jul 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 3 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Mar 2026 – Jul 2026 | below 6 mg/l 1 Jul 2026 |
| Bromobenzene 6604 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Bromochloromethane 6605 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Bromodichloromethane 3282 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Bromoform :- {Tribromomethane} 3283 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Bupirimate 9606 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Cadmium 0108 | River water | 3 | Mar 2026 – Apr 2026 | below 0.1 µg/l 7 Apr 2026 |
| Cadmium, Dissolved 0106 | River water | 14 | Mar 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Calcium, Dissolved 0239 | River water | 14 | Mar 2026 – Jul 2026 | 47 mg/l 1 Jul 2026 |
| Carbon tetrachloride :- {Tetrachloromethane} 1049 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 14 | Mar 2026 – Jul 2026 | 9.6 mg/l 1 Jul 2026 |
| Carbophenothion 9519 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Chemical Oxygen Demand :- {COD} 0092 | River water | 11 | Mar 2026 – May 2026 | 37 mg/l 27 May 2026 |
| Chlorfenvinphos 0503 | River water | 3 | May 2026 – Jul 2026 | below 0.02 µg/l 1 Jul 2026 |
| Chloride 0172 | River water | 14 | Mar 2026 – Jul 2026 | 57 mg/l 1 Jul 2026 |
| Chlorobenzene 3290 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Chlorodibromomethane 3292 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Chloroform :- {Trichloromethane} 3373 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Chlorpyrifos-ethyl 9978 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Chlorpyrifos-methyl 7181 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Chromium 3164 | River water | 3 | Mar 2026 – Apr 2026 | 0.7 µg/l 7 Apr 2026 |
| Chromium, Dissolved 3409 | River water | 14 | Mar 2026 – Jul 2026 | below 0.5 µg/l 1 Jul 2026 |
| Chrysene 8310 | River water | 2 | May 2026 – Jun 2026 | below 0.02 µg/l 16 Jun 2026 |
| cis-1,2-Dichloroethylene :- {cis-1,2-Dichloroethene} 6538 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| cis-1,3-Dichloropropylene :- {cis-1,3-Dichloropropene} 6543 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Copper 6452 | River water | 3 | Mar 2026 – Apr 2026 | 6.2 µg/l 7 Apr 2026 |
| Copper, Dissolved 6450 | River water | 14 | Mar 2026 – Jul 2026 | 2.4 µg/l 1 Jul 2026 |
| Coumaphos 9474 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Cyanazine 6628 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Cyanide as CN 0175 | River water | 3 | May 2026 – Jul 2026 | 0.031 mg/l 1 Jul 2026 |
| Desmetryn 6635 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Diazinon 0723 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Dibenzo(a,h)Anthracene 8360 | River water | 3 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Dibromomethane 3783 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Dichloromethane :- {Methylene Dichloride} 3299 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Dichlorvos 0507 | River water | 3 | May 2026 – Jul 2026 | below 0.008 µg/l 1 Jul 2026 |
| Dimethoate 6447 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Ethion 9979 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Ethofumesate 7154 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Ethylbenzene 4117 | River water | 2 | May 2026 – Jul 2026 | 0.22 µg/l 1 Jul 2026 |
| Fenchlorphos :- {Ronnel} 6640 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Fenitrothion 9716 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Fenpropimorph 6776 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Fenthion 1118 | River water | 3 | May 2026 – Jul 2026 | below 0.02 µg/l 1 Jul 2026 |
| Fluoranthene 0736 | River water | 2 | May 2026 – Jun 2026 | 0.27 µg/l 16 Jun 2026 |
| Fluorene 7864 | River water | 2 | May 2026 – Jun 2026 | 0.7 µg/l 16 Jun 2026 |
| Fonofos 7159 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Hardness, Total as CaCO3 0158 | River water | 14 | Mar 2026 – Jul 2026 | 135 mg/l 1 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Hydrocarbon Oils 1066 | River water | 3 | May 2026 – Jul 2026 | below 1 mg/l 1 Jul 2026 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 2 | May 2026 – Jun 2026 | below 0.01 µg/l 16 Jun 2026 |
| Iodofenphos 9000 | River water | 1 | Jun 2026 – Jun 2026 | below 0.001 µg/l 16 Jun 2026 |
| Iprodione 6649 | River water | 3 | May 2026 – Jul 2026 | below 0.02 µg/l 1 Jul 2026 |
| Irgarol 1051 8999 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Iron, Dissolved 6460 | River water | 3 | May 2026 – Jul 2026 | 72 µg/l 1 Jul 2026 |
| Isopropylbenzene :- {Methylethylbenzene} 7574 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Lead 0050 | River water | 3 | Mar 2026 – Apr 2026 | 2.5 µg/l 7 Apr 2026 |
| Lead, Dissolved 0052 | River water | 14 | Mar 2026 – Jul 2026 | below 2 µg/l 1 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 14 | Mar 2026 – Jul 2026 | 4.3 mg/l 1 Jul 2026 |
| Malathion 0535 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Manganese, Dissolved 6458 | River water | 3 | May 2026 – Jul 2026 | 11 µg/l 1 Jul 2026 |
| Mercury, Dissolved 0103 | River water | 4 | Apr 2026 – Jul 2026 | 0.011 µg/l 1 Jul 2026 |
| Metalaxyl 9860 | River water | 3 | May 2026 – Jul 2026 | below 0.02 µg/l 1 Jul 2026 |
| Metazachlor 9002 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Mevinphos 9479 | River water | 3 | May 2026 – Jul 2026 | below 0.02 µg/l 1 Jul 2026 |
| n-ButylBenzene :- {1-Phenylbutane} 6658 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| n-Propylbenzene :- {1-Phenylpropane} 6659 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Naphthalene 9669 | River water | 2 | May 2026 – Jun 2026 | 0.33 µg/l 16 Jun 2026 |
| Napropamide 6976 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| National Grid Reference : Whole : Field report 7434 | River water | 10 | Mar 2026 – May 2026 | 1 unitless value 27 May 2026 |
| Nickel 6462 | River water | 3 | Mar 2026 – Apr 2026 | 5.5 µg/l 7 Apr 2026 |
| Nickel, Dissolved 3410 | River water | 14 | Mar 2026 – Jul 2026 | 4.8 µg/l 1 Jul 2026 |
| Nitrite as N 0118 | River water | 14 | Mar 2026 – Jul 2026 | 0.24 mg/l 1 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 14 | Mar 2026 – Jul 2026 | 1.7 mg/l 1 Jul 2026 |
| Parathion-ethyl :- {Parathion} 0543 | River water | 3 | May 2026 – Jul 2026 | below 0.008 µg/l 1 Jul 2026 |
| Parathion-methyl 1119 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Pentachlorophenol 1085 | River water | 1 | Apr 2026 – Apr 2026 | 0.1 µg/l 10 Apr 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | May 2026 – Jul 2026 | 0.0049 µg/l 1 Jul 2026 |
| Perfluorobutanoic acid 2995 | River water | 3 | May 2026 – Jul 2026 | 0.014 µg/l 1 Jul 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | May 2026 – Jul 2026 | 0.0012 µg/l 1 Jul 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorodecanoic acid 8892 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | May 2026 – Jul 2026 | below 0.005 µg/l 1 Jul 2026 |
| Perfluorododecanoic acid 8894 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluoroheptanoic acid 8889 | River water | 3 | May 2026 – Jul 2026 | 0.0049 µg/l 1 Jul 2026 |
| Perfluorohexane sulfonamido amine 2874 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | May 2026 – Jul 2026 | above 0.035 µg/l 1 Jul 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | May 2026 – Jul 2026 | 0.0033 µg/l 1 Jul 2026 |
| Perfluorohexanoic acid 8888 | River water | 3 | May 2026 – Jul 2026 | 0.015 µg/l 1 Jul 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | May 2026 – Jul 2026 | below 0.0005 µg/l 1 Jul 2026 |
| Perfluorononanoic acid 8891 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | May 2026 – Jul 2026 | 0.0048 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | May 2026 – Jul 2026 | 0.011 µg/l 1 Jul 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 3 | May 2026 – Jul 2026 | 0.016 µg/l 1 Jul 2026 |
| Perfluorooctanoic acid 8890 | River water | 3 | May 2026 – Jul 2026 | 0.0071 µg/l 1 Jul 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | May 2026 – Jul 2026 | 0.00086 µg/l 1 Jul 2026 |
| Perfluoropentanoic acid 8887 | River water | 3 | May 2026 – Jul 2026 | 0.031 µg/l 1 Jul 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2026 – Jul 2026 | below 0.002 µg/l 1 Jul 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Perfluoroundecanoic acid 8893 | River water | 3 | May 2026 – Jul 2026 | below 0.001 µg/l 1 Jul 2026 |
| Perylene 9003 | River water | 3 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Phenanthrene 9671 | River water | 2 | May 2026 – Jun 2026 | 0.69 µg/l 16 Jun 2026 |
| Phenol 9522 | River water | 4 | Apr 2026 – Jul 2026 | below 0.05 µg/l 1 Jul 2026 |
| Pirimicarb 9959 | River water | 2 | May 2026 – Jun 2026 | below 0.004 µg/l 16 Jun 2026 |
| Pirimiphos-ethyl 8998 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Pirimiphos-methyl 9851 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Prometryn 5563 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Propazine 9634 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Propetamphos 9586 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Propyzamide 6448 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Pyrene 7325 | River water | 2 | May 2026 – Jun 2026 | 0.23 µg/l 16 Jun 2026 |
| sec-Butylbenzene :- {1-Methylpropylbenzene} 6690 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Simazine 3001 | River water | 3 | May 2026 – Jul 2026 | below 0.006 µg/l 1 Jul 2026 |
| Solids, Suspended at 105 C 0135 | River water | 14 | Mar 2026 – Jul 2026 | 54 mg/l 1 Jul 2026 |
| Styrene :- {Vinylbenzene} 9888 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Sulphate as SO4 0183 | River water | 3 | May 2026 – Jul 2026 | 200 mg/l 1 Jul 2026 |
| Terbutryn 3009 | River water | 3 | May 2026 – Jul 2026 | below 0.008 µg/l 1 Jul 2026 |
| tert-Butylbenzene :- {(1,1-Dimethylethyl)benzene} 6697 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Tetrachloroethylene :- {Perchloroethylene} 3328 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Toluene :- {Methylbenzene} 3784 | River water | 2 | May 2026 – Jul 2026 | 0.49 µg/l 1 Jul 2026 |
| trans-1,2-Dichloroethylene :- {trans-1,2-Dichloroethene} 6539 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| trans-1,3-Dichloropropylene :- {trans-1,3-Dichloropropene} 6544 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Triazophos 6487 | River water | 3 | May 2026 – Jul 2026 | below 0.01 µg/l 1 Jul 2026 |
| Trichloroethylene :- {Trichloroethene} 3334 | River water | 2 | May 2026 – Jul 2026 | below 0.1 µg/l 1 Jul 2026 |
| Trietazine 9911 | River water | 3 | May 2026 – Jul 2026 | below 0.004 µg/l 1 Jul 2026 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 1 | May 2026 – May 2026 | Not found 27 May 2026 |
| Zinc 6455 | River water | 3 | Mar 2026 – Apr 2026 | 35 µg/l 7 Apr 2026 |
| Zinc, Dissolved 3408 | River water | 14 | Mar 2026 – Jul 2026 | 8.3 µg/l 1 Jul 2026 |
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.