Downstream of Viaduct
EA name: D/S VIADUCT (also listed as “SPERINGBROOK 100M DOWNSTREAM OF CONFLUENCE OF VIADUCT AND HAM STREET ARMS”)
Environment Agency sampling point SO-E0001500 · 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 May 2026, 07:525 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
- 24 since 19 Jun 2024 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 600109, 133077As published, to the nearest 1 m. Open in a map
- River, by its own name
- Speringbrook
- River, by the map
- Not placedTwo watercourses within reach (12 m and 48 m) and no name to choose by. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
74.8%
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 74.8 | 74.8% |
| 27 Apr 2026, 08:41 | 74.8 | 74.8% |
| 13 Mar 2026, 08:58 | 87.2 | 87.2% |
| 12 Feb 2026, 13:09 | 89.4 | 89.4% |
| 5 Jan 2026, 13:15 | 87.7 | 87.7% |
| 4 Dec 2025, 12:08 | 85 | 85% |
| 12 Nov 2025, 12:47 | 82.3 | 82.3% |
| 1 Oct 2025, 10:16 | 89.6 | 89.6% |
| 8 Sep 2025, 15:18 | 59.6 | 59.6% |
| 11 Aug 2025, 11:38 | 65.7 | 65.7% |
| 15 Jul 2025, 09:46 | 38.6 | 38.6% |
| 17 Jun 2025, 09:18 | 38.4 | 38.4% |
| 29 May 2025, 10:36 | 45.2 | 45.2% |
| 28 Apr 2025, 10:31 | 87.9 | 87.9% |
| 4 Mar 2025, 10:40 | 97.2 | 97.2% |
| 5 Feb 2025, 12:13 | 95.5 | 95.5% |
| 20 Jan 2025, 11:54 | 94.3 | 94.3% |
| 10 Dec 2024, 10:20 | 91 | 91% |
| 21 Nov 2024, 08:16 | 85.4 | 85.4% |
| 23 Oct 2024, 11:02 | 86.8 | 86.8% |
| 27 Sep 2024, 12:38 | 80.8 | 80.8% |
| 28 Aug 2024, 10:30 | 73.4 | 73.4% |
| 17 Jul 2024, 09:19 | 42.1 | 42.1% |
| 19 Jun 2024, 12:28 | 73.8 | 73.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.51 mg/l
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 8.51 | 8.51 mg/l |
| 27 Apr 2026, 08:41 | 8.25 | 8.25 mg/l |
| 13 Mar 2026, 08:58 | 9.87 | 9.87 mg/l |
| 12 Feb 2026, 13:09 | 10.2 | 10.2 mg/l |
| 5 Jan 2026, 13:15 | 11.2 | 11.2 mg/l |
| 4 Dec 2025, 12:08 | 9.69 | 9.69 mg/l |
| 12 Nov 2025, 12:47 | 8.4 | 8.4 mg/l |
| 1 Oct 2025, 10:16 | 8.88 | 8.88 mg/l |
| 8 Sep 2025, 15:18 | 5.38 | 5.38 mg/l |
| 11 Aug 2025, 11:38 | 5.85 | 5.85 mg/l |
| 15 Jul 2025, 09:46 | 3.68 | 3.68 mg/l |
| 17 Jun 2025, 09:18 | 3.77 | 3.77 mg/l |
| 29 May 2025, 10:36 | 4.47 | 4.47 mg/l |
| 28 Apr 2025, 10:31 | 9.04 | 9.04 mg/l |
| 4 Mar 2025, 10:40 | 11.8 | 11.8 mg/l |
| 5 Feb 2025, 12:13 | 11.4 | 11.4 mg/l |
| 20 Jan 2025, 11:54 | 11.5 | 11.5 mg/l |
| 10 Dec 2024, 10:20 | 10.6 | 10.6 mg/l |
| 21 Nov 2024, 08:16 | 10.5 | 10.5 mg/l |
| 23 Oct 2024, 11:02 | 9.04 | 9.04 mg/l |
| 27 Sep 2024, 12:38 | 8.27 | 8.27 mg/l |
| 28 Aug 2024, 10:30 | 6.96 | 6.96 mg/l |
| 17 Jul 2024, 09:19 | 4.08 | 4.08 mg/l |
| 19 Jun 2024, 12:28 | 6.93 | 6.93 mg/l |
Water temperature
code 0076 · °C
9.6 °C
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 9.6 | 9.6 °C |
| 27 Apr 2026, 08:41 | 10.9 | 10.9 °C |
| 13 Mar 2026, 08:58 | 9.8 | 9.8 °C |
| 12 Feb 2026, 13:09 | 9.3 | 9.3 °C |
| 5 Jan 2026, 13:15 | 5 | 5 °C |
| 4 Dec 2025, 12:08 | 9.5 | 9.5 °C |
| 12 Nov 2025, 12:47 | 14.3 | 14.3 °C |
| 1 Oct 2025, 10:16 | 15.7 | 15.7 °C |
| 8 Sep 2025, 15:18 | 20.2 | 20.2 °C |
| 11 Aug 2025, 11:38 | 20.9 | 20.9 °C |
| 15 Jul 2025, 09:46 | 17.5 | 17.5 °C |
| 17 Jun 2025, 09:18 | 16.1 | 16.1 °C |
| 29 May 2025, 10:36 | 15.8 | 15.8 °C |
| 28 Apr 2025, 10:31 | 14 | 14 °C |
| 4 Mar 2025, 10:40 | 7 | 7 °C |
| 5 Feb 2025, 12:13 | 7.7 | 7.7 °C |
| 20 Jan 2025, 11:54 | 6.9 | 6.9 °C |
| 10 Dec 2024, 10:20 | 8.7 | 8.7 °C |
| 21 Nov 2024, 08:16 | 6.4 | 6.4 °C |
| 23 Oct 2024, 11:02 | 13.4 | 13.4 °C |
| 27 Sep 2024, 12:38 | 14.2 | 14.2 °C |
| 28 Aug 2024, 10:30 | 17.8 | 17.8 °C |
| 17 Jul 2024, 09:19 | 16.7 | 16.7 °C |
| 19 Jun 2024, 12:28 | 18.3 | 18.3 °C |
pH
code 0061
7.56
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 7.56 | 7.56 |
| 27 Apr 2026, 08:41 | 7.55 | 7.55 |
| 13 Mar 2026, 08:58 | 7.57 | 7.57 |
| 12 Feb 2026, 13:09 | 7.51 | 7.51 |
| 5 Jan 2026, 13:15 | 7.72 | 7.72 |
| 4 Dec 2025, 12:08 | 7.55 | 7.55 |
| 12 Nov 2025, 12:47 | 7.4 | 7.4 |
| 1 Oct 2025, 10:16 | 8.02 | 8.02 |
| 8 Sep 2025, 15:18 | 7.68 | 7.68 |
| 11 Aug 2025, 11:38 | 7.73 | 7.73 |
| 15 Jul 2025, 09:46 | 7.56 | 7.56 |
| 17 Jun 2025, 09:18 | 7.33 | 7.33 |
| 29 May 2025, 10:36 | 7.43 | 7.43 |
| 28 Apr 2025, 10:31 | 7.77 | 7.77 |
| 4 Mar 2025, 10:40 | 7.53 | 7.53 |
| 5 Feb 2025, 12:13 | 7.67 | 7.67 |
| 20 Jan 2025, 11:54 | 7.69 | 7.69 |
| 10 Dec 2024, 10:20 | 7.2 | 7.2 |
| 21 Nov 2024, 08:16 | 7.7 | 7.7 |
| 23 Oct 2024, 11:02 | 7.38 | 7.38 |
| 27 Sep 2024, 12:38 | 7.24 | 7.24 |
| 28 Aug 2024, 10:30 | 7.58 | 7.58 |
| 17 Jul 2024, 09:19 | 7.39 | 7.39 |
| 19 Jun 2024, 12:28 | 7.68 | 7.68 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
3.8 mg/l
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 3.8 | 3.8 mg/l |
| 27 Apr 2026, 08:41 | 0.19 | 0.19 mg/l |
| 13 Mar 2026, 08:58 | 0.095 | 0.095 mg/l |
| 12 Feb 2026, 13:09 | 0.19 | 0.19 mg/l |
| 5 Jan 2026, 13:15 | 0.49 | 0.49 mg/l |
| 4 Dec 2025, 12:08 | 0.11 | 0.11 mg/l |
| 12 Nov 2025, 12:47 | 0.2 | 0.2 mg/l |
| 1 Oct 2025, 10:16 | 0.038 | 0.038 mg/l |
| 8 Sep 2025, 15:18 | 0.15 | 0.15 mg/l |
| 11 Aug 2025, 11:38 | 0.11 | 0.11 mg/l |
| 15 Jul 2025, 09:46 | 0.11 | 0.11 mg/l |
| 17 Jun 2025, 09:18 | 0.081 | 0.081 mg/l |
| 29 May 2025, 10:36 | 0.056 | 0.056 mg/l |
| 28 Apr 2025, 10:31 | 0.53 | 0.53 mg/l |
| 4 Mar 2025, 10:40 | 0.59 | 0.59 mg/l |
| 5 Feb 2025, 12:13 | 0.14 | 0.14 mg/l |
| 20 Jan 2025, 11:54 | 0.13 | 0.13 mg/l |
| 10 Dec 2024, 10:20 | 0.033 | 0.033 mg/l |
| 21 Nov 2024, 08:16 | 0.19 | 0.19 mg/l |
| 23 Oct 2024, 11:02 | 0.075 | 0.075 mg/l |
| 27 Sep 2024, 12:38 | 0.45 | 0.45 mg/l |
| 28 Aug 2024, 10:30 | 0.033 | 0.033 mg/l |
| 17 Jul 2024, 09:19 | 0.039 | 0.039 mg/l |
| 19 Jun 2024, 12:28 | 2.8 | 2.8 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.95 mg/l
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 1.95 | 1.95 mg/l |
| 27 Apr 2026, 08:41 | 5.02 | 5.02 mg/l |
| 13 Mar 2026, 08:58 | 3.28 | 3.28 mg/l |
| 12 Feb 2026, 13:09 | 2.67 | 2.67 mg/l |
| 5 Jan 2026, 13:15 | 4.91 | 4.91 mg/l |
| 4 Dec 2025, 12:08 | 8.46 | 8.46 mg/l |
| 12 Nov 2025, 12:47 | 11.9 | 11.9 mg/l |
| 1 Oct 2025, 10:16 | 7.18 | 7.18 mg/l |
| 8 Sep 2025, 15:18 | 3.52 | 3.52 mg/l |
| 11 Aug 2025, 11:38 | 4.67 | 4.67 mg/l |
| 15 Jul 2025, 09:46 | 1.66 | 1.66 mg/l |
| 17 Jun 2025, 09:18 | 5.3 | 5.3 mg/l |
| 29 May 2025, 10:36 | 2.44 | 2.44 mg/l |
| 28 Apr 2025, 10:31 | 2.4 | 2.4 mg/l |
| 4 Mar 2025, 10:40 | 4.72 | 4.72 mg/l |
| 5 Feb 2025, 12:13 | 3.86 | 3.86 mg/l |
| 20 Jan 2025, 11:54 | 7.15 | 7.15 mg/l |
| 10 Dec 2024, 10:20 | 3.49 | 3.49 mg/l |
| 21 Nov 2024, 08:16 | 4.69 | 4.69 mg/l |
| 23 Oct 2024, 11:02 | 5.66 | 5.66 mg/l |
| 27 Sep 2024, 12:38 | 7.13 | 7.13 mg/l |
| 28 Aug 2024, 10:30 | 10.9 | 10.9 mg/l |
| 17 Jul 2024, 09:19 | 8.05 | 8.05 mg/l |
| 19 Jun 2024, 12:28 | 1.59 | 1.59 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
2.5 mg/l
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 2.5 | 2.5 mg/l |
| 27 Apr 2026, 08:41 | 1.2 | 1.2 mg/l |
| 13 Mar 2026, 08:58 | 0.43 | 0.43 mg/l |
| 12 Feb 2026, 13:09 | 0.17 | 0.17 mg/l |
| 5 Jan 2026, 13:15 | 1.2 | 1.2 mg/l |
| 4 Dec 2025, 12:08 | 0.38 | 0.38 mg/l |
| 12 Nov 2025, 12:47 | 0.52 | 0.52 mg/l |
| 1 Oct 2025, 10:16 | 0.23 | 0.23 mg/l |
| 8 Sep 2025, 15:18 | 0.5 | 0.5 mg/l |
| 11 Aug 2025, 11:38 | 1 | 1 mg/l |
| 15 Jul 2025, 09:46 | 0.41 | 0.41 mg/l |
| 17 Jun 2025, 09:18 | 0.81 | 0.81 mg/l |
| 29 May 2025, 10:36 | 0.54 | 0.54 mg/l |
| 28 Apr 2025, 10:31 | 0.96 | 0.96 mg/l |
| 4 Mar 2025, 10:40 | 0.34 | 0.34 mg/l |
| 5 Feb 2025, 12:13 | 0.33 | 0.33 mg/l |
| 20 Jan 2025, 11:54 | 0.63 | 0.63 mg/l |
| 10 Dec 2024, 10:20 | 0.15 | 0.15 mg/l |
| 21 Nov 2024, 08:16 | 0.47 | 0.47 mg/l |
| 23 Oct 2024, 11:02 | 0.43 | 0.43 mg/l |
| 27 Sep 2024, 12:38 | 0.34 | 0.34 mg/l |
| 28 Aug 2024, 10:30 | 1.5 | 1.5 mg/l |
| 17 Jul 2024, 09:19 | 0.13 | 0.13 mg/l |
| 19 Jun 2024, 12:28 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
886 µS/cm
Sampled 11 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 May 2026, 07:52 | 886 | 886 µS/cm |
| 27 Apr 2026, 08:41 | 805 | 805 µS/cm |
| 13 Mar 2026, 08:58 | 627 | 627 µS/cm |
| 12 Feb 2026, 13:09 | 411 | 411 µS/cm |
| 5 Jan 2026, 13:15 | 941 | 941 µS/cm |
| 4 Dec 2025, 12:08 | 644 | 644 µS/cm |
| 12 Nov 2025, 12:47 | 740 | 740 µS/cm |
| 1 Oct 2025, 10:16 | 900 | 900 µS/cm |
| 8 Sep 2025, 15:18 | 912 | 912 µS/cm |
| 11 Aug 2025, 11:38 | 962 | 962 µS/cm |
| 15 Jul 2025, 09:46 | 863 | 863 µS/cm |
| 17 Jun 2025, 09:18 | 814 | 814 µS/cm |
| 29 May 2025, 10:36 | 788 | 788 µS/cm |
| 28 Apr 2025, 10:31 | 828 | 828 µS/cm |
| 4 Mar 2025, 10:40 | 591 | 591 µS/cm |
| 5 Feb 2025, 12:13 | 593 | 593 µS/cm |
| 20 Jan 2025, 11:54 | 685 | 685 µS/cm |
| 10 Dec 2024, 10:20 | 365 | 365 µS/cm |
| 21 Nov 2024, 08:16 | 608 | 608 µS/cm |
| 23 Oct 2024, 11:02 | 535 | 535 µS/cm |
| 27 Sep 2024, 12:38 | 590 | 590 µS/cm |
| 28 Aug 2024, 10:30 | 856 | 856 µS/cm |
| 17 Jul 2024, 09:19 | 819 | 819 µS/cm |
| 19 Jun 2024, 12:28 | 988 | 988 µS/cm |
Everything measured here
60 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 60 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Jun 2024 – May 2026 | 74.8% 11 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 8.51 mg/l 11 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 9.6 °C 11 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 7.56 11 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | 3.8 mg/l 11 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 1.95 mg/l 11 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 2.5 mg/l 11 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 886 µS/cm 11 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Oct 2024 – Oct 2024 | below 0.004 µg/l 23 Oct 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 23 Oct 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 250 mg/l 11 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | 0.0247 mg/l 11 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.3 mg/l 11 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.25 mg/l 11 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 2.2 mg/l 11 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Oct 2024 – Oct 2024 | 0.0036 µg/l 23 Oct 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Oct 2024 – Oct 2024 | 0.0035 µg/l 23 Oct 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 23 Oct 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Oct 2024 – Oct 2024 | 0.0021 µg/l 23 Oct 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Oct 2024 – Oct 2024 | 0.00084 µg/l 23 Oct 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Oct 2024 – Oct 2024 | 0.0028 µg/l 23 Oct 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Oct 2024 – Oct 2024 | below 0.001 µg/l 23 Oct 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Oct 2024 – Oct 2024 | 0.00093 µg/l 23 Oct 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Oct 2024 – Oct 2024 | 0.0006 µg/l 23 Oct 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Oct 2024 – Oct 2024 | 0.0023 µg/l 23 Oct 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Oct 2024 – Oct 2024 | below 0.0005 µg/l 23 Oct 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Oct 2024 – Oct 2024 | 0.0032 µg/l 23 Oct 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Oct 2024 – Oct 2024 | below 0.006 µg/l 23 Oct 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Oct 2024 – Oct 2024 | below 0.005 µg/l 23 Oct 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Oct 2024 – Oct 2024 | below 0.004 µg/l 23 Oct 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Oct 2024 – Oct 2024 | below 0.002 µg/l 23 Oct 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.