Swale at Maunby
EA name: SWALE AT MAUNBY
Environment Agency sampling point NE-49900184 · 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
- 5 May 2026, 12:555 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 23 since 24 Oct 2023 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 434742, 486178As published, to the nearest 1 m. Open in a map
- River, by its own name
- Swale
- River, by the map
- River SwalePlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Crakehill On the River Swale · 22 km along the riverBeside Maunby: too close to say above or below.
- Nearest gauge upstream
- Leeming On the Bedale Beck · 10 km along the riverCatterick Village On the Brough Beck · 29 km along the riverCatterick Bridge On the River Swale · 32 km along the river
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.5%
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 97.5 | 97.5% |
| 22 Apr 2026, 14:46 | 100.8 | 100.8% |
| 20 Mar 2026, 13:46 | 100.7 | 100.7% |
| 27 Feb 2026, 10:14 | 95.6 | 95.6% |
| 8 Jan 2026, 14:03 | 93.6 | 93.6% |
| 12 Dec 2025, 13:58 | 88.4 | 88.4% |
| 7 Mar 2025, 08:32 | 101.4 | 101.4% |
| 7 Feb 2025, 11:01 | 93.5 | 93.5% |
| 23 Jan 2025, 09:11 | 97.4 | 97.4% |
| 10 Dec 2024, 11:00 | 94.7 | 94.7% |
| 19 Nov 2024, 09:20 | 99.2 | 99.2% |
| 18 Oct 2024, 09:59 | 88.7 | 88.7% |
| 27 Sep 2024, 12:30 | 93 | 93% |
| 19 Jul 2024, 09:44 | 92.5 | 92.5% |
| 26 Jun 2024, 10:47 | 94.7 | 94.7% |
| 28 May 2024, 08:40 | 94.2 | 94.2% |
| 18 Apr 2024, 10:14 | 95.2 | 95.2% |
| 18 Mar 2024, 10:57 | 96.2 | 96.2% |
| 19 Feb 2024, 12:40 | 92.5 | 92.5% |
| 17 Jan 2024, 10:39 | 97.5 | 97.5% |
| 7 Dec 2023, 10:29 | 97.7 | 97.7% |
| 23 Nov 2023, 12:09 | 98.2 | 98.2% |
| 24 Oct 2023, 11:11 | 84.4 | 84.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.4 mg/l
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 10.4 | 10.4 mg/l |
| 22 Apr 2026, 14:46 | 10.9 | 10.9 mg/l |
| 20 Mar 2026, 13:46 | 11.6 | 11.6 mg/l |
| 27 Feb 2026, 10:14 | 11.2 | 11.2 mg/l |
| 8 Jan 2026, 14:03 | 12.4 | 12.4 mg/l |
| 12 Dec 2025, 13:58 | 10.4 | 10.4 mg/l |
| 7 Mar 2025, 08:32 | 12 | 12 mg/l |
| 7 Feb 2025, 11:01 | 12.3 | 12.3 mg/l |
| 23 Jan 2025, 09:11 | 12.6 | 12.6 mg/l |
| 10 Dec 2024, 11:00 | 11.6 | 11.6 mg/l |
| 19 Nov 2024, 09:20 | 12.9 | 12.9 mg/l |
| 18 Oct 2024, 09:59 | 9.78 | 9.78 mg/l |
| 27 Sep 2024, 12:30 | 10.3 | 10.3 mg/l |
| 19 Jul 2024, 09:44 | 8.59 | 8.59 mg/l |
| 26 Jun 2024, 10:47 | 8.82 | 8.82 mg/l |
| 28 May 2024, 08:40 | 9.92 | 9.92 mg/l |
| 18 Apr 2024, 10:14 | 11.3 | 11.3 mg/l |
| 18 Mar 2024, 10:57 | 11.1 | 11.1 mg/l |
| 19 Feb 2024, 12:40 | 10.7 | 10.7 mg/l |
| 17 Jan 2024, 10:39 | 13.7 | 13.7 mg/l |
| 7 Dec 2023, 10:29 | 12.5 | 12.5 mg/l |
| 23 Nov 2023, 12:09 | 11.1 | 11.1 mg/l |
| 24 Oct 2023, 11:11 | 9.55 | 9.55 mg/l |
Water temperature
code 0076 · °C
12.4 °C
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 12.4 | 12.4 °C |
| 22 Apr 2026, 14:46 | 11.6 | 11.6 °C |
| 20 Mar 2026, 13:46 | 9.1 | 9.1 °C |
| 27 Feb 2026, 10:14 | 8.3 | 8.3 °C |
| 8 Jan 2026, 14:03 | 3.4 | 3.4 °C |
| 12 Dec 2025, 13:58 | 8.1 | 8.1 °C |
| 7 Mar 2025, 08:32 | 8 | 8 °C |
| 7 Feb 2025, 11:01 | 3.9 | 3.9 °C |
| 23 Jan 2025, 09:11 | 4.6 | 4.6 °C |
| 10 Dec 2024, 11:00 | 6.5 | 6.5 °C |
| 19 Nov 2024, 09:20 | 4.3 | 4.3 °C |
| 18 Oct 2024, 09:59 | 10.9 | 10.9 °C |
| 27 Sep 2024, 12:30 | 10.6 | 10.6 °C |
| 19 Jul 2024, 09:44 | 18.8 | 18.8 °C |
| 26 Jun 2024, 10:47 | 18.7 | 18.7 °C |
| 28 May 2024, 08:40 | 12.9 | 12.9 °C |
| 18 Apr 2024, 10:14 | 7.7 | 7.7 °C |
| 18 Mar 2024, 10:57 | 9 | 9 °C |
| 19 Feb 2024, 12:40 | 8.7 | 8.7 °C |
| 17 Jan 2024, 10:39 | 1.3 | 1.3 °C |
| 7 Dec 2023, 10:29 | 4.9 | 4.9 °C |
| 23 Nov 2023, 12:09 | 9.8 | 9.8 °C |
| 24 Oct 2023, 11:11 | 9.8 | 9.8 °C |
pH
code 0061
8.5
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 8.5 | 8.5 |
| 22 Apr 2026, 14:46 | 8.6 | 8.6 |
| 20 Mar 2026, 13:46 | 8.12 | 8.12 |
| 27 Feb 2026, 10:14 | 8.05 | 8.05 |
| 8 Jan 2026, 14:03 | 8.02 | 8.02 |
| 12 Dec 2025, 13:58 | 7.72 | 7.72 |
| 7 Mar 2025, 08:32 | 8.33 | 8.33 |
| 7 Feb 2025, 11:01 | 8.14 | 8.14 |
| 23 Jan 2025, 09:11 | 8.16 | 8.16 |
| 10 Dec 2024, 11:00 | 7.92 | 7.92 |
| 19 Nov 2024, 09:20 | 8.28 | 8.28 |
| 18 Oct 2024, 09:59 | 7.93 | 7.93 |
| 27 Sep 2024, 12:30 | 7.85 | 7.85 |
| 19 Jul 2024, 09:44 | 7.94 | 7.94 |
| 26 Jun 2024, 10:47 | 8.44 | 8.44 |
| 28 May 2024, 08:40 | 7.96 | 7.96 |
| 18 Apr 2024, 10:14 | 8.05 | 8.05 |
| 18 Mar 2024, 10:57 | 8.1 | 8.1 |
| 19 Feb 2024, 12:40 | 8.1 | 8.1 |
| 17 Jan 2024, 10:39 | 8.1 | 8.1 |
| 7 Dec 2023, 10:29 | 8 | 8 |
| 23 Nov 2023, 12:09 | 8 | 8 |
| 24 Oct 2023, 11:11 | 8 | 8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Apr 2026, 14:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2026, 13:46 | 0.051 | 0.051 mg/l |
| 27 Feb 2026, 10:14 | 0.054 | 0.054 mg/l |
| 8 Jan 2026, 14:03 | 0.1 | 0.1 mg/l |
| 12 Dec 2025, 13:58 | 0.043 | 0.043 mg/l |
| 7 Mar 2025, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 11:01 | 0.05 | 0.05 mg/l |
| 23 Jan 2025, 09:11 | 0.039 | 0.039 mg/l |
| 10 Dec 2024, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Nov 2024, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2024, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Sep 2024, 12:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 09:44 | 0.031 | 0.031 mg/l |
| 26 Jun 2024, 10:47 | 0.037 | 0.037 mg/l |
| 28 May 2024, 08:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Apr 2024, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 10:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2024, 12:40 | 0.044 | 0.044 mg/l |
| 17 Jan 2024, 10:39 | 0.071 | 0.071 mg/l |
| 7 Dec 2023, 10:29 | 0.057 | 0.057 mg/l |
| 23 Nov 2023, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Oct 2023, 11:11 | 0.046 | 0.046 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.78 mg/l
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 1.78 | 1.78 mg/l |
| 22 Apr 2026, 14:46 | 2.09 | 2.09 mg/l |
| 20 Mar 2026, 13:46 | 7.68 | 7.68 mg/l |
| 27 Feb 2026, 10:14 | 8.16 | 8.16 mg/l |
| 8 Jan 2026, 14:03 | 9.74 | 9.74 mg/l |
| 12 Dec 2025, 13:58 | 6.66 | 6.66 mg/l |
| 7 Mar 2025, 08:32 | 2.69 | 2.69 mg/l |
| 7 Feb 2025, 11:01 | 4.69 | 4.69 mg/l |
| 23 Jan 2025, 09:11 | 2.79 | 2.79 mg/l |
| 10 Dec 2024, 11:00 | 2.69 | 2.69 mg/l |
| 19 Nov 2024, 09:20 | 2.69 | 2.69 mg/l |
| 18 Oct 2024, 09:59 | 2.19 | 2.19 mg/l |
| 27 Sep 2024, 12:30 | 1.7 | 1.7 mg/l |
| 19 Jul 2024, 09:44 | 1.69 | 1.69 mg/l |
| 26 Jun 2024, 10:47 | 2.69 | 2.69 mg/l |
| 28 May 2024, 08:40 | 1.59 | 1.59 mg/l |
| 18 Apr 2024, 10:14 | 2.49 | 2.49 mg/l |
| 18 Mar 2024, 10:57 | 1.89 | 1.89 mg/l |
| 19 Feb 2024, 12:40 | 8.08 | 8.08 mg/l |
| 17 Jan 2024, 10:39 | 3.78 | 3.78 mg/l |
| 7 Dec 2023, 10:29 | 5.58 | 5.58 mg/l |
| 23 Nov 2023, 12:09 | 2.89 | 2.89 mg/l |
| 24 Oct 2023, 11:11 | 5.63 | 5.63 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.06 mg/l
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 0.06 | 0.06 mg/l |
| 22 Apr 2026, 14:46 | 0.032 | 0.032 mg/l |
| 20 Mar 2026, 13:46 | <0.01 | below 0.01 mg/l (not detected above this) |
| 27 Feb 2026, 10:14 | 0.034 | 0.034 mg/l |
| 8 Jan 2026, 14:03 | 0.046 | 0.046 mg/l |
| 12 Dec 2025, 13:58 | 0.036 | 0.036 mg/l |
| 7 Mar 2025, 08:32 | 0.02 | 0.02 mg/l |
| 7 Feb 2025, 11:01 | 0.055 | 0.055 mg/l |
| 23 Jan 2025, 09:11 | 0.034 | 0.034 mg/l |
| 10 Dec 2024, 11:00 | 0.028 | 0.028 mg/l |
| 19 Nov 2024, 09:20 | 0.047 | 0.047 mg/l |
| 18 Oct 2024, 09:59 | 0.051 | 0.051 mg/l |
| 27 Sep 2024, 12:30 | 0.048 | 0.048 mg/l |
| 19 Jul 2024, 09:44 | 0.044 | 0.044 mg/l |
| 26 Jun 2024, 10:47 | 0.034 | 0.034 mg/l |
| 28 May 2024, 08:40 | 0.029 | 0.029 mg/l |
| 18 Apr 2024, 10:14 | 0.02 | 0.02 mg/l |
| 18 Mar 2024, 10:57 | 0.021 | 0.021 mg/l |
| 19 Feb 2024, 12:40 | 0.036 | 0.036 mg/l |
| 17 Jan 2024, 10:39 | 0.036 | 0.036 mg/l |
| 7 Dec 2023, 10:29 | 0.068 | 0.068 mg/l |
| 23 Nov 2023, 12:09 | 0.036 | 0.036 mg/l |
| 24 Oct 2023, 11:11 | 0.082 | 0.082 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
444 µS/cm
Sampled 5 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 12:55 | 444 | 444 µS/cm |
| 22 Apr 2026, 14:46 | 425 | 425 µS/cm |
| 20 Mar 2026, 13:46 | 816 | 816 µS/cm |
| 27 Feb 2026, 10:14 | 859 | 859 µS/cm |
| 8 Jan 2026, 14:03 | 1119 | 1119 µS/cm |
| 12 Dec 2025, 13:58 | 835 | 835 µS/cm |
| 7 Mar 2025, 08:32 | 495 | 495 µS/cm |
| 7 Feb 2025, 11:01 | 942 | 942 µS/cm |
| 23 Jan 2025, 09:11 | 471 | 471 µS/cm |
| 10 Dec 2024, 11:00 | 328 | 328 µS/cm |
| 19 Nov 2024, 09:20 | 516 | 516 µS/cm |
| 18 Oct 2024, 09:59 | 261 | 261 µS/cm |
| 27 Sep 2024, 12:30 | 141 | 141 µS/cm |
| 19 Jul 2024, 09:44 | 275 | 275 µS/cm |
| 26 Jun 2024, 10:47 | 590 | 590 µS/cm |
| 28 May 2024, 08:40 | 273 | 273 µS/cm |
| 18 Apr 2024, 10:14 | 408 | 408 µS/cm |
| 18 Mar 2024, 10:57 | 321 | 321 µS/cm |
| 19 Feb 2024, 12:40 | 854 | 854 µS/cm |
| 17 Jan 2024, 10:39 | 577 | 577 µS/cm |
| 7 Dec 2023, 10:29 | 620 | 620 µS/cm |
| 23 Nov 2023, 12:09 | 449 | 449 µS/cm |
| 24 Oct 2023, 11:11 | 955 | 955 µS/cm |
Everything measured here
104 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 104 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – May 2026 | 97.5% 5 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – May 2026 | 10.4 mg/l 5 May 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – May 2026 | 12.4 °C 5 May 2026 |
| pH 0061 | River water | 23 | Oct 2023 – May 2026 | 8.5 5 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – May 2026 | below 0.03 mg/l 5 May 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – May 2026 | 1.78 mg/l 5 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – May 2026 | 0.06 mg/l 5 May 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – May 2026 | 444 µS/cm 5 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 10 Dec 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 10 Dec 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – May 2026 | 170 mg/l 5 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – May 2026 | below 0.00065 mg/l 5 May 2026 |
| Barium 6062 | River water | 6 | Oct 2023 – Mar 2024 | 150 µg/l 18 Mar 2024 |
| Barium, Dissolved 9446 | River water | 6 | Oct 2023 – Mar 2024 | 140 µg/l 18 Mar 2024 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – May 2026 | 1.5 mg/l 5 May 2026 |
| Boron 6059 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 18 Mar 2024 |
| Boron, Dissolved 9447 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 18 Mar 2024 |
| Cadmium 0108 | River water | 6 | Oct 2023 – Mar 2024 | 0.22 µg/l 18 Mar 2024 |
| Cadmium, Dissolved 0106 | River water | 6 | Oct 2023 – Mar 2024 | 0.16 µg/l 18 Mar 2024 |
| Calcium 0241 | River water | 6 | Oct 2023 – Mar 2024 | 48 mg/l 18 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 6 | Oct 2023 – Mar 2024 | 46 mg/l 18 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Oct 2023 – Mar 2024 | 6.3 mg/l 18 Mar 2024 |
| Chloride 0172 | River water | 6 | Oct 2023 – Mar 2024 | 14 mg/l 18 Mar 2024 |
| Chromium 3164 | River water | 6 | Oct 2023 – Mar 2024 | 0.55 µg/l 18 Mar 2024 |
| Chromium, Dissolved 3409 | River water | 6 | Oct 2023 – Mar 2024 | below 0.5 µg/l 18 Mar 2024 |
| Copper 6452 | River water | 6 | Oct 2023 – Mar 2024 | 1.8 µg/l 18 Mar 2024 |
| Copper : BLM Bioavailable 4821 | River water | 6 | Oct 2023 – Mar 2024 | 0.11 µg/l 18 Mar 2024 |
| Copper, Dissolved 6450 | River water | 6 | Oct 2023 – Mar 2024 | 2.1 µg/l 18 Mar 2024 |
| Hardness, Total as CaCO3 0158 | River water | 6 | Oct 2023 – Mar 2024 | 141 mg/l 18 Mar 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Ionic Balance 7044 | River water | 6 | Oct 2023 – Mar 2024 | 0.608% 18 Mar 2024 |
| Iron 6051 | River water | 6 | Oct 2023 – Mar 2024 | 570 µg/l 18 Mar 2024 |
| Iron, Dissolved 6460 | River water | 6 | Oct 2023 – Mar 2024 | 250 µg/l 18 Mar 2024 |
| Lead 0050 | River water | 6 | Oct 2023 – Mar 2024 | 13 µg/l 18 Mar 2024 |
| Lead : BLM Bioavailable 3377 | River water | 6 | Oct 2023 – Mar 2024 | 1.1 µg/l 18 Mar 2024 |
| Lead, Dissolved 0052 | River water | 6 | Oct 2023 – Mar 2024 | 6.8 µg/l 18 Mar 2024 |
| Lithium 6064 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 18 Mar 2024 |
| Lithium, Dissolved 4201 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 18 Mar 2024 |
| Magnesium 0237 | River water | 6 | Oct 2023 – Mar 2024 | 6.4 mg/l 18 Mar 2024 |
| Magnesium, Dissolved 0235 | River water | 6 | Oct 2023 – Mar 2024 | 6.3 mg/l 18 Mar 2024 |
| Manganese 6050 | River water | 6 | Oct 2023 – Mar 2024 | 25 µg/l 18 Mar 2024 |
| Manganese : BLM Bioavailable 4820 | River water | 6 | Oct 2023 – Mar 2024 | 16 µg/l 18 Mar 2024 |
| Manganese, Dissolved 6458 | River water | 6 | Oct 2023 – Mar 2024 | 16 µg/l 18 Mar 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Nickel 6462 | River water | 6 | Oct 2023 – Mar 2024 | 1.6 µg/l 18 Mar 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 6 | Oct 2023 – Mar 2024 | 0.51 µg/l 18 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 6 | Oct 2023 – Mar 2024 | 1.2 µg/l 18 Mar 2024 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – May 2026 | 0.016 mg/l 5 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – May 2026 | 1.8 mg/l 5 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 10 Dec 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 10 Dec 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 10 Dec 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2024 – Dec 2024 | below 0.006 µg/l 10 Dec 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 10 Dec 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 10 Dec 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 10 Dec 2024 |
| Potassium 0211 | River water | 6 | Oct 2023 – Mar 2024 | 1.7 mg/l 18 Mar 2024 |
| Potassium, Dissolved 0209 | River water | 6 | Oct 2023 – Mar 2024 | 1.6 mg/l 18 Mar 2024 |
| Silica, reactive as SiO2 0182 | River water | 6 | Oct 2023 – Mar 2024 | 3.7 mg/l 18 Mar 2024 |
| Sodium 0207 | River water | 6 | Oct 2023 – Mar 2024 | 9.7 mg/l 18 Mar 2024 |
| Sodium, Dissolved 0205 | River water | 6 | Oct 2023 – Mar 2024 | 9.1 mg/l 18 Mar 2024 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | 12 mg/l 18 Mar 2024 |
| Strontium 6063 | River water | 6 | Oct 2023 – Mar 2024 | 200 µg/l 18 Mar 2024 |
| Strontium, Filtered 6693 | River water | 6 | Oct 2023 – Mar 2024 | 200 µg/l 18 Mar 2024 |
| Sulphate as SO4 0183 | River water | 6 | Oct 2023 – Mar 2024 | 20 mg/l 18 Mar 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 6 | Oct 2023 – Mar 2024 | 21 mg/l 18 Mar 2024 |
| Zinc 6455 | River water | 6 | Oct 2023 – Mar 2024 | 29 µg/l 18 Mar 2024 |
| Zinc : BLM Bioavailable 4822 | River water | 6 | Oct 2023 – Mar 2024 | 6.8 µg/l 18 Mar 2024 |
| Zinc, Dissolved 3408 | River water | 6 | Oct 2023 – Mar 2024 | 21 µg/l 18 Mar 2024 |
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.