Sleightholme
EA name: SSN0306 SLEIGHTHOLME
Environment Agency sampling point NE-SSN0306 · 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
- 10 Sep 2026, 14:0121 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 19 since 12 Feb 2025 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 393940, 508961As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Hound BeckPlaced by position alone, on a line whose map name differs from its own, 6 m from the line.
- Next gauge downstream
- Rutherford Bridge On the River Greta · 14 km along the river
- Why it was sampled
- Monitoring (national agency policy) (19 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81.9%
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 81.9 | 81.9% |
| 14 Aug 2026, 14:01 | 36.2 | 36.2% |
| 13 Jul 2026, 11:01 | 28.8 | 28.8% |
| 17 Jun 2026, 10:17 | 93.6 | 93.6% |
| 19 May 2026, 10:47 | 95.2 | 95.2% |
| 29 Apr 2026, 10:59 | 92.5 | 92.5% |
| 12 Mar 2026, 12:39 | 91.4 | 91.4% |
| 5 Feb 2026, 09:55 | 97.2 | 97.2% |
| 8 Jan 2026, 12:21 | 85 | 85% |
| 10 Dec 2025, 10:39 | 98 | 98% |
| 13 Nov 2025, 10:33 | 87.1 | 87.1% |
| 29 Oct 2025, 14:05 | 94.1 | 94.1% |
| 19 Aug 2025, 11:41 | 66.8 | 66.8% |
| 7 Jul 2025, 11:55 | 94.3 | 94.3% |
| 9 Jun 2025, 11:38 | 101.2 | 101.2% |
| 4 Apr 2025, 13:38 | 93.6 | 93.6% |
| 4 Mar 2025, 10:00 | 97.4 | 97.4% |
| 12 Feb 2025, 13:42 | 98 | 98% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.84 mg/l
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 8.84 | 8.84 mg/l |
| 14 Aug 2026, 14:01 | 3.34 | 3.34 mg/l |
| 13 Jul 2026, 11:01 | 2.99 | 2.99 mg/l |
| 17 Jun 2026, 10:17 | 9.99 | 9.99 mg/l |
| 19 May 2026, 10:47 | 11.2 | 11.2 mg/l |
| 29 Apr 2026, 10:59 | 10.8 | 10.8 mg/l |
| 12 Mar 2026, 12:39 | 11.3 | 11.3 mg/l |
| 5 Feb 2026, 09:55 | 13.2 | 13.2 mg/l |
| 8 Jan 2026, 12:21 | 11.5 | 11.5 mg/l |
| 10 Dec 2025, 10:39 | 12.1 | 12.1 mg/l |
| 13 Nov 2025, 10:33 | 10.1 | 10.1 mg/l |
| 29 Oct 2025, 14:05 | 11.3 | 11.3 mg/l |
| 19 Aug 2025, 11:41 | 7.08 | 7.08 mg/l |
| 7 Jul 2025, 11:55 | 10.2 | 10.2 mg/l |
| 9 Jun 2025, 11:38 | 11.4 | 11.4 mg/l |
| 4 Apr 2025, 13:38 | 11.3 | 11.3 mg/l |
| 4 Mar 2025, 10:00 | 12.6 | 12.6 mg/l |
| 12 Feb 2025, 13:42 | 13.3 | 13.3 mg/l |
Water temperature
code 0076 · °C
11.8 °C
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 11.8 | 11.8 °C |
| 14 Aug 2026, 14:01 | 19.1 | 19.1 °C |
| 13 Jul 2026, 11:01 | 13.6 | 13.6 °C |
| 17 Jun 2026, 10:17 | 12.3 | 12.3 °C |
| 19 May 2026, 10:47 | 8.3 | 8.3 °C |
| 29 Apr 2026, 10:59 | 8.5 | 8.5 °C |
| 12 Mar 2026, 12:39 | 6.1 | 6.1 °C |
| 5 Feb 2026, 09:55 | 2.5 | 2.5 °C |
| 8 Jan 2026, 12:21 | 2.6 | 2.6 °C |
| 10 Dec 2025, 10:39 | 6.3 | 6.3 °C |
| 13 Nov 2025, 10:33 | 8.6 | 8.6 °C |
| 29 Oct 2025, 14:05 | 7.2 | 7.2 °C |
| 19 Aug 2025, 11:41 | 12.6 | 12.6 °C |
| 7 Jul 2025, 11:55 | 11.9 | 11.9 °C |
| 9 Jun 2025, 11:38 | 9.9 | 9.9 °C |
| 4 Apr 2025, 13:38 | 7.1 | 7.1 °C |
| 4 Mar 2025, 10:00 | 4.3 | 4.3 °C |
| 12 Feb 2025, 13:42 | 2.5 | 2.5 °C |
pH
code 0061
5.94
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 5.94 | 5.94 |
| 14 Aug 2026, 14:01 | 4.91 | 4.91 |
| 13 Jul 2026, 11:01 | 6.3 | 6.3 |
| 17 Jun 2026, 10:17 | 4.79 | 4.79 |
| 19 May 2026, 10:47 | 5.55 | 5.55 |
| 29 Apr 2026, 10:59 | 4.84 | 4.84 |
| 12 Mar 2026, 12:39 | 5.11 | 5.11 |
| 5 Feb 2026, 09:55 | 4.15 | 4.15 |
| 8 Jan 2026, 12:21 | 4.55 | 4.55 |
| 10 Dec 2025, 10:39 | 6.37 | 6.37 |
| 13 Nov 2025, 10:33 | 4.55 | 4.55 |
| 29 Oct 2025, 14:05 | 4.18 | 4.18 |
| 19 Aug 2025, 11:41 | 5.28 | 5.28 |
| 7 Jul 2025, 11:55 | 4.01 | 4.01 |
| 9 Jun 2025, 11:38 | 5.36 | 5.36 |
| 4 Apr 2025, 13:38 | 4.97 | 4.97 |
| 4 Mar 2025, 10:00 | 4.42 | 4.42 |
| 12 Feb 2025, 13:42 | 4.03 | 4.03 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.3 mg/l
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 0.3 | 0.3 mg/l |
| 14 Aug 2026, 14:01 | 0.055 | 0.055 mg/l |
| 13 Jul 2026, 11:01 | 0.055 | 0.055 mg/l |
| 17 Jun 2026, 10:17 | 0.003 | 0.003 mg/l |
| 19 May 2026, 10:47 | 0.003 | 0.003 mg/l |
| 29 Apr 2026, 10:59 | <0.002 | below 0.002 mg/l (not detected above this) |
| 12 Mar 2026, 12:39 | 0.022 | 0.022 mg/l |
| 5 Feb 2026, 09:55 | 0.027 | 0.027 mg/l |
| 8 Jan 2026, 12:21 | 0.18 | 0.18 mg/l |
| 10 Dec 2025, 10:39 | 0.022 | 0.022 mg/l |
| 13 Nov 2025, 10:33 | 0.0053 | 0.0053 mg/l |
| 29 Oct 2025, 14:05 | 0.046 | 0.046 mg/l |
| 19 Aug 2025, 11:41 | <0.002 | below 0.002 mg/l (not detected above this) |
| 7 Jul 2025, 11:55 | 0.014 | 0.014 mg/l |
| 9 Jun 2025, 11:38 | 0.012 | 0.012 mg/l |
| 4 Apr 2025, 13:38 | 0.013 | 0.013 mg/l |
| 4 Mar 2025, 10:00 | 0.014 | 0.014 mg/l |
| 12 Feb 2025, 13:42 | 0.0071 | 0.0071 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.0279 mg/l
Sampled 10 Sep 2026, 21 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 0.0279 | 0.0279 mg/l |
| 13 Jul 2026, 11:01 | 0.0021 | 0.0021 mg/l |
| 17 Jun 2026, 10:17 | 0.009 | 0.009 mg/l |
| 19 May 2026, 10:47 | 0.021 | 0.021 mg/l |
| 29 Apr 2026, 10:59 | 0.013 | 0.013 mg/l |
| 12 Mar 2026, 12:39 | 0.039 | 0.039 mg/l |
| 5 Feb 2026, 09:55 | 0.031 | 0.031 mg/l |
| 8 Jan 2026, 12:21 | 0.072 | 0.072 mg/l |
| 10 Dec 2025, 10:39 | 0.028 | 0.028 mg/l |
| 13 Nov 2025, 10:33 | 0.0043 | 0.0043 mg/l |
| 29 Oct 2025, 14:05 | 0.029 | 0.029 mg/l |
| 19 Aug 2025, 11:41 | 0.0026 | 0.0026 mg/l |
| 7 Jul 2025, 11:55 | 0.092 | 0.092 mg/l |
| 9 Jun 2025, 11:38 | 0.0058 | 0.0058 mg/l |
| 4 Apr 2025, 13:38 | 0.029 | 0.029 mg/l |
| 4 Mar 2025, 10:00 | 0.03 | 0.03 mg/l |
| 12 Feb 2025, 13:42 | 0.054 | 0.054 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.045 mg/l
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 0.045 | 0.045 mg/l |
| 14 Aug 2026, 14:01 | 0.076 | 0.076 mg/l |
| 13 Jul 2026, 11:01 | 0.13 | 0.13 mg/l |
| 17 Jun 2026, 10:17 | 0.016 | 0.016 mg/l |
| 19 May 2026, 10:47 | 0.012 | 0.012 mg/l |
| 29 Apr 2026, 10:59 | 0.012 | 0.012 mg/l |
| 12 Mar 2026, 12:39 | 0.016 | 0.016 mg/l |
| 5 Feb 2026, 09:55 | 0.0078 | 0.0078 mg/l |
| 8 Jan 2026, 12:21 | 0.024 | 0.024 mg/l |
| 10 Dec 2025, 10:39 | 0.0081 | 0.0081 mg/l |
| 13 Nov 2025, 10:33 | 0.017 | 0.017 mg/l |
| 29 Oct 2025, 14:05 | 0.018 | 0.018 mg/l |
| 19 Aug 2025, 11:41 | 0.038 | 0.038 mg/l |
| 7 Jul 2025, 11:55 | 0.013 | 0.013 mg/l |
| 9 Jun 2025, 11:38 | 0.0046 | 0.0046 mg/l |
| 4 Apr 2025, 13:38 | 0.0078 | 0.0078 mg/l |
| 4 Mar 2025, 10:00 | 0.0034 | 0.0034 mg/l |
| 12 Feb 2025, 13:42 | 0.0052 | 0.0052 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
214 µS/cm
Sampled 10 Sep 2026, 21 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 14:01 | 214 | 214 µS/cm |
| 14 Aug 2026, 14:01 | 57 | 57 µS/cm |
| 13 Jul 2026, 11:01 | 86 | 86 µS/cm |
| 17 Jun 2026, 10:17 | 100 | 100 µS/cm |
| 19 May 2026, 10:47 | 52 | 52 µS/cm |
| 29 Apr 2026, 10:59 | 62 | 62 µS/cm |
| 12 Mar 2026, 12:39 | 60 | 60 µS/cm |
| 5 Feb 2026, 09:55 | 100 | 100 µS/cm |
| 8 Jan 2026, 12:21 | 157 | 157 µS/cm |
| 10 Dec 2025, 10:39 | 67 | 67 µS/cm |
| 13 Nov 2025, 10:33 | 48 | 48 µS/cm |
| 29 Oct 2025, 14:05 | 102 | 102 µS/cm |
| 19 Aug 2025, 11:41 | 56 | 56 µS/cm |
| 7 Jul 2025, 11:55 | 87 | 87 µS/cm |
| 9 Jun 2025, 11:38 | 53 | 53 µS/cm |
| 4 Apr 2025, 13:38 | 46 | 46 µS/cm |
| 4 Mar 2025, 10:00 | 58 | 58 µS/cm |
| 12 Feb 2025, 13:42 | 88 | 88 µS/cm |
Everything measured here
110 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 110 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Feb 2025 – Sep 2026 | 81.9% 10 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Feb 2025 – Sep 2026 | 8.84 mg/l 10 Sep 2026 |
| Temperature of Water 0076 | River water | 18 | Feb 2025 – Sep 2026 | 11.8 °C 10 Sep 2026 |
| pH 0061 | River water | 18 | Feb 2025 – Sep 2026 | 5.94 10 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Feb 2025 – Sep 2026 | 0.3 mg/l 10 Sep 2026 |
| Nitrate as N 0117 | River water | 17 | Feb 2025 – Sep 2026 | 0.0279 mg/l 10 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Feb 2025 – Sep 2026 | 0.045 mg/l 10 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Feb 2025 – Sep 2026 | 214 µS/cm 10 Sep 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Oct 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Oct 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Apr 2025 – Oct 2025 | below 0.004 µg/l 29 Oct 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Oct 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Oct 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Oct 2025 – Oct 2025 | below 0.004 µg/l 29 Oct 2025 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Oct 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Oct 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Oct 2025 – Oct 2025 | below 0.01 µg/l 29 Oct 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Oct 2025 – Oct 2025 | below 0.004 µg/l 29 Oct 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Oct 2025 – Oct 2025 | below 0.01 µg/l 29 Oct 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Oct 2025 – Oct 2025 | below 0.004 µg/l 29 Oct 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Oct 2025 – Oct 2025 | below 0.01 µg/l 29 Oct 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Feb 2025 – Sep 2026 | below 8 mg/l 10 Sep 2026 |
| Aluminium, Dissolved 6037 | River water | 4 | Apr 2025 – Jan 2026 | 310 µg/l 8 Jan 2026 |
| Aminomethylphosphonic acid 7125 | River water | 10 | Apr 2025 – Mar 2026 | below 0.1 µg/l 12 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Feb 2025 – Sep 2026 | 0.00006 mg/l 10 Sep 2026 |
| Barium, Dissolved 9446 | River water | 4 | Apr 2025 – Jan 2026 | 61 µg/l 8 Jan 2026 |
| Boron, Dissolved 9447 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 8 Jan 2026 |
| Cadmium, Dissolved 0106 | River water | 4 | Apr 2025 – Jan 2026 | 0.14 µg/l 8 Jan 2026 |
| Calcium, Dissolved 0239 | River water | 4 | Apr 2025 – Jan 2026 | 3.9 mg/l 8 Jan 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 17 | Feb 2025 – Sep 2026 | 31 mg/l 10 Sep 2026 |
| Chloride 0172 | River water | 18 | Feb 2025 – Sep 2026 | 52 mg/l 10 Sep 2026 |
| Chromium, Dissolved 3409 | River water | 4 | Apr 2025 – Jan 2026 | below 0.5 µg/l 8 Jan 2026 |
| Copper : BLM Bioavailable 4821 | River water | 3 | Apr 2025 – Jan 2026 | 0.06 µg/l 8 Jan 2026 |
| Copper, Dissolved 6450 | River water | 4 | Apr 2025 – Jan 2026 | 1.4 µg/l 8 Jan 2026 |
| eDNA Report 3047 | River water | 1 | Feb 2025 – Feb 2025 | 1 text result 12 Feb 2025 |
| Flow Type 2896 | River water | 16 | Feb 2025 – Sep 2026 | Moderate Flow 10 Sep 2026 |
| Glyphosate 3007 | River water | 10 | Apr 2025 – Mar 2026 | below 0.1 µg/l 12 Mar 2026 |
| Hardness, Calcium 0163 | River water | 4 | Apr 2025 – Jan 2026 | 9.74 mg/l 8 Jan 2026 |
| Hardness, Total as CaCO3 0158 | River water | 4 | Apr 2025 – Jan 2026 | 13.9 mg/l 8 Jan 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Oct 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Iron, Dissolved 6460 | River water | 4 | Apr 2025 – Jan 2026 | 2200 µg/l 8 Jan 2026 |
| Lead : BLM Bioavailable 3377 | River water | 3 | Apr 2025 – Jan 2026 | 0.29 µg/l 8 Jan 2026 |
| Lead, Dissolved 0052 | River water | 4 | Apr 2025 – Jan 2026 | 5.6 µg/l 8 Jan 2026 |
| Lithium, Dissolved 4201 | River water | 4 | Apr 2025 – Jan 2026 | below 100 µg/l 8 Jan 2026 |
| Magnesium, Dissolved 0235 | River water | 4 | Apr 2025 – Jan 2026 | 1 mg/l 8 Jan 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 3 | Apr 2025 – Jan 2026 | 60 µg/l 8 Jan 2026 |
| Manganese, Dissolved 6458 | River water | 4 | Apr 2025 – Jan 2026 | 60 µg/l 8 Jan 2026 |
| Mitochondrial marker : Fish 12S 2857 | River water | 1 | Feb 2025 – Feb 2025 | Present 12 Feb 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Apr 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Apr 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 3 | Apr 2025 – Jan 2026 | 0.16 µg/l 8 Jan 2026 |
| Nickel, Dissolved 3410 | River water | 4 | Apr 2025 – Jan 2026 | 1.1 µg/l 8 Jan 2026 |
| Nitrite as N 0118 | River water | 18 | Feb 2025 – Sep 2026 | 0.0021 mg/l 10 Sep 2026 |
| Nitrogen, Total as N 9686 | River water | 18 | Feb 2025 – Sep 2026 | 1.9 mg/l 10 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Feb 2025 – Sep 2026 | below 0.03 mg/l 10 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorobutanoic acid 2995 | River water | 2 | Apr 2025 – Oct 2025 | 0.0012 µg/l 29 Oct 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorodecanoic acid 8892 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Apr 2025 – Oct 2025 | below 0.005 µg/l 29 Oct 2025 |
| Perfluorododecanoic acid 8894 | River water | 2 | Apr 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorohexanoic acid 8888 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorononanoic acid 8891 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Apr 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Oct 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Perfluorooctanoic acid 8890 | River water | 2 | Apr 2025 – Oct 2025 | 0.00095 µg/l 29 Oct 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Apr 2025 – Oct 2025 | below 0.0005 µg/l 29 Oct 2025 |
| Perfluoropentanoic acid 8887 | River water | 2 | Apr 2025 – Oct 2025 | 0.0069 µg/l 29 Oct 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Apr 2025 – Oct 2025 | below 0.006 µg/l 29 Oct 2025 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Apr 2025 – Oct 2025 | below 0.002 µg/l 29 Oct 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Apr 2025 – Oct 2025 | below 0.004 µg/l 29 Oct 2025 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Apr 2025 – Oct 2025 | below 0.001 µg/l 29 Oct 2025 |
| Phosphorus, Total as P 0348 | River water | 17 | Feb 2025 – Sep 2026 | 0.08 mg/l 10 Sep 2026 |
| Potassium, Dissolved 0209 | River water | 4 | Apr 2025 – Jan 2026 | 0.57 mg/l 8 Jan 2026 |
| Silica, reactive as SiO2 0182 | River water | 18 | Feb 2025 – Sep 2026 | 3.6 mg/l 10 Sep 2026 |
| Sodium, Dissolved 0205 | River water | 4 | Apr 2025 – Jan 2026 | 21 mg/l 8 Jan 2026 |
| Solids, Suspended at 105 C 0135 | River water | 18 | Feb 2025 – Sep 2026 | 52 mg/l 10 Sep 2026 |
| Strontium, Filtered 6693 | River water | 4 | Apr 2025 – Jan 2026 | 34 µg/l 8 Jan 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 4 | Apr 2025 – Jan 2026 | below 10 mg/l 8 Jan 2026 |
| Trifluoroacetic acid 2872 | River water | 1 | Oct 2025 – Oct 2025 | 0.35 µg/l 29 Oct 2025 |
| Zinc : BLM Bioavailable 4822 | River water | 3 | Apr 2025 – Jan 2026 | 4.3 µg/l 8 Jan 2026 |
| Zinc, Dissolved 3408 | River water | 4 | Apr 2025 – Jan 2026 | 22 µg/l 8 Jan 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.