Stour at Bryanston School
EA name: STOUR AT BRYANSTON SCHOOL (also listed as “RSN1533 STOUR AT BRYANSTON SCHOOL”)
Environment Agency sampling point SW-RSN1533 · 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
- 11 Sep 2026, 10:5320 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 21 since 8 Nov 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 387717, 106747As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stour
- River, by the map
- River StourPlaced on the river its name gives, 23 m from the line.
- Next gauge downstream
- Blandford On the River Stour · 1.1 km along the river
- Nearest gauge upstream
- Stourpaine Havelins On the River Iwerne · 4.7 km along the riverHammoon On the River Stour · 16 km along the river
- Why it was sampled
- Monitoring (national agency policy) (16 samples)
Environmental monitoring statutory (EU directives) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
70.6%
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 70.6 | 70.6% |
| 20 Aug 2026, 13:13 | 92.9 | 92.9% |
| 6 Jul 2026, 13:28 | 145.3 | 145.3% |
| 3 Jun 2026, 13:49 | 93.3 | 93.3% |
| 13 May 2026, 09:42 | 121.4 | 121.4% |
| 25 Mar 2026, 14:07 | 98.3 | 98.3% |
| 17 Dec 2025, 15:41 | 87.1 | 87.1% |
| 2 Dec 2025, 10:13 | 94.7 | 94.7% |
| 28 Nov 2025, 13:47 | 95.2 | 95.2% |
| 7 Nov 2025, 12:46 | 88.5 | 88.5% |
| 1 Oct 2025, 14:31 | 94.6 | 94.6% |
| 10 Sep 2025, 11:57 | 89.6 | 89.6% |
| 15 Aug 2025, 13:23 | 100.6 | 100.6% |
| 31 Jul 2025, 12:35 | 96.6 | 96.6% |
| 25 Jun 2025, 14:06 | 94.6 | 94.6% |
| 23 May 2025, 14:34 | 97.6 | 97.6% |
| 16 Oct 2024, 12:33 | 85.7 | 85.7% |
| 24 Sep 2024, 13:15 | 88.9 | 88.9% |
| 23 Aug 2024, 14:46 | 94.7 | 94.7% |
| 15 Jul 2024, 10:31 | 84.1 | 84.1% |
| 8 Nov 2023, 11:45 | 89.3 | 89.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.92 mg/l
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 6.92 | 6.92 mg/l |
| 20 Aug 2026, 13:13 | 8.44 | 8.44 mg/l |
| 6 Jul 2026, 13:28 | 12.8 | 12.8 mg/l |
| 3 Jun 2026, 13:49 | 8.84 | 8.84 mg/l |
| 13 May 2026, 09:42 | 12.7 | 12.7 mg/l |
| 25 Mar 2026, 14:07 | 11.2 | 11.2 mg/l |
| 17 Dec 2025, 15:41 | 10.3 | 10.3 mg/l |
| 2 Dec 2025, 10:13 | 11.1 | 11.1 mg/l |
| 28 Nov 2025, 13:47 | 11.1 | 11.1 mg/l |
| 7 Nov 2025, 12:46 | 9.02 | 9.02 mg/l |
| 1 Oct 2025, 14:31 | 9.72 | 9.72 mg/l |
| 10 Sep 2025, 11:57 | 8.69 | 8.69 mg/l |
| 15 Aug 2025, 13:23 | 9.23 | 9.23 mg/l |
| 31 Jul 2025, 12:35 | 8.92 | 8.92 mg/l |
| 25 Jun 2025, 14:06 | 8.56 | 8.56 mg/l |
| 23 May 2025, 14:34 | 9.33 | 9.33 mg/l |
| 16 Oct 2024, 12:33 | 8.89 | 8.89 mg/l |
| 24 Sep 2024, 13:15 | 8.86 | 8.86 mg/l |
| 23 Aug 2024, 14:46 | 8.45 | 8.45 mg/l |
| 15 Jul 2024, 10:31 | 8.42 | 8.42 mg/l |
| 8 Nov 2023, 11:45 | 9.94 | 9.94 mg/l |
Water temperature
code 0076 · °C
16.2 °C
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 16.2 | 16.2 °C |
| 20 Aug 2026, 13:13 | 19.9 | 19.9 °C |
| 6 Jul 2026, 13:28 | 21.6 | 21.6 °C |
| 3 Jun 2026, 13:49 | 17.8 | 17.8 °C |
| 13 May 2026, 09:42 | 13.3 | 13.3 °C |
| 25 Mar 2026, 14:07 | 9.5 | 9.5 °C |
| 17 Dec 2025, 15:41 | 7.9 | 7.9 °C |
| 2 Dec 2025, 10:13 | 8.3 | 8.3 °C |
| 28 Nov 2025, 13:47 | 8.7 | 8.7 °C |
| 7 Nov 2025, 12:46 | 14.4 | 14.4 °C |
| 1 Oct 2025, 14:31 | 14 | 14 °C |
| 10 Sep 2025, 11:57 | 16.7 | 16.7 °C |
| 15 Aug 2025, 13:23 | 19.4 | 19.4 °C |
| 31 Jul 2025, 12:35 | 19.1 | 19.1 °C |
| 25 Jun 2025, 14:06 | 20.1 | 20.1 °C |
| 23 May 2025, 14:34 | 17.4 | 17.4 °C |
| 16 Oct 2024, 12:33 | 13.6 | 13.6 °C |
| 24 Sep 2024, 13:15 | 15.4 | 15.4 °C |
| 23 Aug 2024, 14:46 | 20.8 | 20.8 °C |
| 15 Jul 2024, 10:31 | 15.2 | 15.2 °C |
| 8 Nov 2023, 11:45 | 10.5 | 10.5 °C |
pH
code 0061
7.78
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 7.78 | 7.78 |
| 20 Aug 2026, 13:13 | 7.89 | 7.89 |
| 6 Jul 2026, 13:28 | 8.3 | 8.3 |
| 3 Jun 2026, 13:49 | 8.22 | 8.22 |
| 13 May 2026, 09:42 | 8.33 | 8.33 |
| 25 Mar 2026, 14:07 | 8.16 | 8.16 |
| 17 Dec 2025, 15:41 | 7.76 | 7.76 |
| 2 Dec 2025, 10:13 | 7.97 | 7.97 |
| 28 Nov 2025, 13:47 | 7.97 | 7.97 |
| 7 Nov 2025, 12:46 | 7.85 | 7.85 |
| 1 Oct 2025, 14:31 | 7.94 | 7.94 |
| 10 Sep 2025, 11:57 | 7.84 | 7.84 |
| 15 Aug 2025, 13:23 | 8.06 | 8.06 |
| 31 Jul 2025, 12:35 | 7.91 | 7.91 |
| 25 Jun 2025, 14:06 | 8.02 | 8.02 |
| 23 May 2025, 14:34 | 7.98 | 7.98 |
| 16 Oct 2024, 12:33 | 7.77 | 7.77 |
| 24 Sep 2024, 13:15 | 7.92 | 7.92 |
| 23 Aug 2024, 14:46 | 7.89 | 7.89 |
| 15 Jul 2024, 10:31 | 7.83 | 7.83 |
| 8 Nov 2023, 11:45 | 7.82 | 7.82 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.068 mg/l
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 0.068 | 0.068 mg/l |
| 20 Aug 2026, 13:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jul 2026, 13:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jun 2026, 13:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2026, 09:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2026, 14:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Dec 2025, 15:41 | 0.039 | 0.039 mg/l |
| 2 Dec 2025, 10:13 | 0.035 | 0.035 mg/l |
| 28 Nov 2025, 13:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Nov 2025, 12:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Oct 2025, 14:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Sep 2025, 11:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Aug 2025, 13:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jul 2025, 12:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 14:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 May 2025, 14:34 | 0.041 | 0.041 mg/l |
| 16 Oct 2024, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 13:15 | 0.047 | 0.047 mg/l |
| 23 Aug 2024, 14:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 10:31 | 0.042 | 0.042 mg/l |
| 8 Nov 2023, 11:45 | 0.037 | 0.037 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.33 mg/l
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 4.33 | 4.33 mg/l |
| 20 Aug 2026, 13:13 | 4.07 | 4.07 mg/l |
| 6 Jul 2026, 13:28 | 3.97 | 3.97 mg/l |
| 3 Jun 2026, 13:49 | 4.57 | 4.57 mg/l |
| 13 May 2026, 09:42 | 5.38 | 5.38 mg/l |
| 25 Mar 2026, 14:07 | 5.49 | 5.49 mg/l |
| 17 Dec 2025, 15:41 | 3.68 | 3.68 mg/l |
| 2 Dec 2025, 10:13 | 5.97 | 5.97 mg/l |
| 28 Nov 2025, 13:47 | 6.08 | 6.08 mg/l |
| 7 Nov 2025, 12:46 | 6.66 | 6.66 mg/l |
| 1 Oct 2025, 14:31 | 4.79 | 4.79 mg/l |
| 10 Sep 2025, 11:57 | 4.19 | 4.19 mg/l |
| 15 Aug 2025, 13:23 | 4.58 | 4.58 mg/l |
| 31 Jul 2025, 12:35 | 4.68 | 4.68 mg/l |
| 25 Jun 2025, 14:06 | 4.67 | 4.67 mg/l |
| 23 May 2025, 14:34 | 5.17 | 5.17 mg/l |
| 16 Oct 2024, 12:33 | 2.38 | 2.38 mg/l |
| 24 Sep 2024, 13:15 | 4.48 | 4.48 mg/l |
| 23 Aug 2024, 14:46 | 4.89 | 4.89 mg/l |
| 15 Jul 2024, 10:31 | 4.17 | 4.17 mg/l |
| 8 Nov 2023, 11:45 | 4.07 | 4.07 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 0.15 | 0.15 mg/l |
| 20 Aug 2026, 13:13 | 0.13 | 0.13 mg/l |
| 6 Jul 2026, 13:28 | 0.092 | 0.092 mg/l |
| 3 Jun 2026, 13:49 | 0.14 | 0.14 mg/l |
| 13 May 2026, 09:42 | 0.075 | 0.075 mg/l |
| 25 Mar 2026, 14:07 | 0.1 | 0.1 mg/l |
| 17 Dec 2025, 15:41 | 0.22 | 0.22 mg/l |
| 2 Dec 2025, 10:13 | 0.17 | 0.17 mg/l |
| 28 Nov 2025, 13:47 | 0.14 | 0.14 mg/l |
| 7 Nov 2025, 12:46 | 0.076 | 0.076 mg/l |
| 1 Oct 2025, 14:31 | 0.14 | 0.14 mg/l |
| 10 Sep 2025, 11:57 | 0.15 | 0.15 mg/l |
| 15 Aug 2025, 13:23 | 0.12 | 0.12 mg/l |
| 31 Jul 2025, 12:35 | 0.14 | 0.14 mg/l |
| 25 Jun 2025, 14:06 | 0.14 | 0.14 mg/l |
| 23 May 2025, 14:34 | 0.17 | 0.17 mg/l |
| 16 Oct 2024, 12:33 | 0.2 | 0.2 mg/l |
| 24 Sep 2024, 13:15 | 0.28 | 0.28 mg/l |
| 23 Aug 2024, 14:46 | 0.23 | 0.23 mg/l |
| 15 Jul 2024, 10:31 | 0.22 | 0.22 mg/l |
| 8 Nov 2023, 11:45 | 0.17 | 0.17 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
660 µS/cm
Sampled 11 Sep 2026, 20 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 10:53 | 660 | 660 µS/cm |
| 20 Aug 2026, 13:13 | 653 | 653 µS/cm |
| 6 Jul 2026, 13:28 | 611 | 611 µS/cm |
| 3 Jun 2026, 13:49 | 610 | 610 µS/cm |
| 13 May 2026, 09:42 | 608 | 608 µS/cm |
| 25 Mar 2026, 14:07 | 581 | 581 µS/cm |
| 17 Dec 2025, 15:41 | 346 | 346 µS/cm |
| 2 Dec 2025, 10:13 | 477 | 477 µS/cm |
| 28 Nov 2025, 13:47 | 541 | 541 µS/cm |
| 7 Nov 2025, 12:46 | 553 | 553 µS/cm |
| 1 Oct 2025, 14:31 | 623 | 623 µS/cm |
| 10 Sep 2025, 11:57 | 599 | 599 µS/cm |
| 15 Aug 2025, 13:23 | 637 | 637 µS/cm |
| 31 Jul 2025, 12:35 | 627 | 627 µS/cm |
| 25 Jun 2025, 14:06 | 640 | 640 µS/cm |
| 23 May 2025, 14:34 | 627 | 627 µS/cm |
| 16 Oct 2024, 12:33 | 414 | 414 µS/cm |
| 24 Sep 2024, 13:15 | 614 | 614 µS/cm |
| 23 Aug 2024, 14:46 | 450 | 450 µS/cm |
| 15 Jul 2024, 10:31 | 530 | 530 µS/cm |
| 8 Nov 2023, 11:45 | 514 | 514 µS/cm |
Everything measured here
68 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 68 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 21 | Nov 2023 – Sep 2026 | 70.6% 11 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Nov 2023 – Sep 2026 | 6.92 mg/l 11 Sep 2026 |
| Temperature of Water 0076 | River water | 21 | Nov 2023 – Sep 2026 | 16.2 °C 11 Sep 2026 |
| pH 0061 | River water | 21 | Nov 2023 – Sep 2026 | 7.78 11 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Nov 2023 – Sep 2026 | 0.068 mg/l 11 Sep 2026 |
| Nitrate as N 0117 | River water | 21 | Nov 2023 – Sep 2026 | 4.33 mg/l 11 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Nov 2023 – Sep 2026 | 0.15 mg/l 11 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Nov 2023 – Sep 2026 | 660 µS/cm 11 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Sep 2024 – Sep 2024 | below 0.004 µg/l 24 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 24 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Nov 2023 – Sep 2026 | 230 mg/l 11 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Nov 2023 – Sep 2026 | 0.00119 mg/l 11 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 16 | Jul 2024 – May 2026 | 2 mg/l 13 May 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 18 | Nov 2023 – Sep 2026 | 3.3 mg/l 11 Sep 2026 |
| Chloride 0172 | River water | 18 | Nov 2023 – Sep 2026 | 41 mg/l 11 Sep 2026 |
| Flow Type 2896 | River water | 14 | Jul 2024 – Sep 2026 | Moderate Flow 11 Sep 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 1 | Jul 2026 – Jul 2026 | 1 text result 6 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Nitrite as N 0118 | River water | 21 | Nov 2023 – Sep 2026 | 0.17 mg/l 11 Sep 2026 |
| Nitrogen, Total as N 9686 | River water | 18 | Nov 2023 – Sep 2026 | 5.2 mg/l 11 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Nov 2023 – Sep 2026 | 4.5 mg/l 11 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Sep 2024 – Sep 2024 | 0.0011 µg/l 24 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Sep 2024 – Sep 2024 | 0.0011 µg/l 24 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 24 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Sep 2024 – Sep 2024 | 0.00072 µg/l 24 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Sep 2024 – Sep 2024 | below 0.001 µg/l 24 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Sep 2024 – Sep 2024 | 0.00055 µg/l 24 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Sep 2024 – Sep 2024 | below 0.0005 µg/l 24 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Sep 2024 – Sep 2024 | 0.0012 µg/l 24 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Sep 2024 – Sep 2024 | below 0.006 µg/l 24 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Sep 2024 – Sep 2024 | below 0.005 µg/l 24 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Sep 2024 – Sep 2024 | below 0.004 µg/l 24 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Sep 2024 – Sep 2024 | below 0.002 µg/l 24 Sep 2024 |
| Phosphorus, Total as P 0348 | River water | 18 | Nov 2023 – Sep 2026 | 0.18 mg/l 11 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 18 | Nov 2023 – Sep 2026 | 11 mg/l 11 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Dec 2025 – Sep 2026 | 4.1 mg/l 11 Sep 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.