Grimley Brook upstream of Grimley Bridge
EA name: GRIMLEY BROOK US GRIMLEY BRIDGE
Environment Agency sampling point MD-22833380 · 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 Sep 2026, 15:3730 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 17 Jun 2024 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 382950, 260750As published, to the nearest 10 m. Open in a map
- River, by its own name
- Grimley Brook
- River, by the map
- Grimley BrookPlaced on the river its name gives, 8 m from the line.
- Next gauge downstream
- Worcester (Barbourne) On the River Severn · 8.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (21 samples)
Monitoring (national agency policy) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
80%
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 80 | 80% |
| 11 Aug 2026, 15:16 | 65.7 | 65.7% |
| 16 Jul 2026, 10:29 | 53.2 | 53.2% |
| 26 Jun 2026, 11:20 | 60.3 | 60.3% |
| 28 May 2026, 10:48 | 76.7 | 76.7% |
| 7 May 2026, 12:05 | 93 | 93% |
| 30 Apr 2026, 14:04 | 105.2 | 105.2% |
| 30 Apr 2026, 12:52 | 104.3 | 104.3% |
| 11 Mar 2026, 11:34 | 96.2 | 96.2% |
| 2 Feb 2026, 12:08 | 98.2 | 98.2% |
| 15 Jan 2026, 12:07 | 98.4 | 98.4% |
| 16 Dec 2025, 12:38 | 93.7 | 93.7% |
| 26 Nov 2025, 14:15 | 96 | 96% |
| 27 Oct 2025, 09:38 | 84.8 | 84.8% |
| 10 Sep 2025, 09:21 | 81.7 | 81.7% |
| 15 Aug 2025, 09:43 | 69.3 | 69.3% |
| 16 Jul 2025, 09:59 | 70.3 | 70.3% |
| 16 Jun 2025, 12:43 | 83.9 | 83.9% |
| 29 May 2025, 11:09 | 79.6 | 79.6% |
| 28 Apr 2025, 10:57 | 95.6 | 95.6% |
| 3 Mar 2025, 10:03 | 99.3 | 99.3% |
| 17 Feb 2025, 12:22 | 96 | 96% |
| 23 Jan 2025, 11:10 | 95.3 | 95.3% |
| 11 Dec 2024, 11:51 | 90.9 | 90.9% |
| 20 Nov 2024, 10:24 | 94.4 | 94.4% |
| 14 Oct 2024, 15:08 | 90.3 | 90.3% |
| 28 Aug 2024, 08:01 | 80.4 | 80.4% |
| 17 Jun 2024, 10:47 | 91.5 | 91.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.94 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 7.94 | 7.94 mg/l |
| 11 Aug 2026, 15:16 | 6.29 | 6.29 mg/l |
| 16 Jul 2026, 10:29 | 5.12 | 5.12 mg/l |
| 26 Jun 2026, 11:20 | 5.19 | 5.19 mg/l |
| 28 May 2026, 10:48 | 7.27 | 7.27 mg/l |
| 7 May 2026, 12:05 | 10.4 | 10.4 mg/l |
| 30 Apr 2026, 14:04 | 11.1 | 11.1 mg/l |
| 30 Apr 2026, 12:52 | 11.1 | 11.1 mg/l |
| 11 Mar 2026, 11:34 | 10.8 | 10.8 mg/l |
| 2 Feb 2026, 12:08 | 11.8 | 11.8 mg/l |
| 15 Jan 2026, 12:07 | 12.2 | 12.2 mg/l |
| 16 Dec 2025, 12:38 | 10.9 | 10.9 mg/l |
| 26 Nov 2025, 14:15 | 12.3 | 12.3 mg/l |
| 27 Oct 2025, 09:38 | 9.67 | 9.67 mg/l |
| 10 Sep 2025, 09:21 | 8.36 | 8.36 mg/l |
| 15 Aug 2025, 09:43 | 6.56 | 6.56 mg/l |
| 16 Jul 2025, 09:59 | 6.88 | 6.88 mg/l |
| 16 Jun 2025, 12:43 | 8 | 8 mg/l |
| 29 May 2025, 11:09 | 7.99 | 7.99 mg/l |
| 28 Apr 2025, 10:57 | 10.4 | 10.4 mg/l |
| 3 Mar 2025, 10:03 | 12.9 | 12.9 mg/l |
| 17 Feb 2025, 12:22 | 12.5 | 12.5 mg/l |
| 23 Jan 2025, 11:10 | 12.2 | 12.2 mg/l |
| 11 Dec 2024, 11:51 | 11 | 11 mg/l |
| 20 Nov 2024, 10:24 | 11.8 | 11.8 mg/l |
| 14 Oct 2024, 15:08 | 10.2 | 10.2 mg/l |
| 28 Aug 2024, 08:01 | 8.07 | 8.07 mg/l |
| 17 Jun 2024, 10:47 | 9.41 | 9.41 mg/l |
Water temperature
code 0076 · °C
15.6 °C
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 15.6 | 15.6 °C |
| 11 Aug 2026, 15:16 | 17.3 | 17.3 °C |
| 16 Jul 2026, 10:29 | 17.1 | 17.1 °C |
| 26 Jun 2026, 11:20 | 22.7 | 22.7 °C |
| 28 May 2026, 10:48 | 17.8 | 17.8 °C |
| 7 May 2026, 12:05 | 10.5 | 10.5 °C |
| 30 Apr 2026, 14:04 | 12.7 | 12.7 °C |
| 30 Apr 2026, 12:52 | 12.3 | 12.3 °C |
| 11 Mar 2026, 11:34 | 10.3 | 10.3 °C |
| 2 Feb 2026, 12:08 | 7.3 | 7.3 °C |
| 15 Jan 2026, 12:07 | 6.2 | 6.2 °C |
| 16 Dec 2025, 12:38 | 8.8 | 8.8 °C |
| 26 Nov 2025, 14:15 | 4.9 | 4.9 °C |
| 27 Oct 2025, 09:38 | 9.5 | 9.5 °C |
| 10 Sep 2025, 09:21 | 14.2 | 14.2 °C |
| 15 Aug 2025, 09:43 | 17.9 | 17.9 °C |
| 16 Jul 2025, 09:59 | 16.3 | 16.3 °C |
| 16 Jun 2025, 12:43 | 17.5 | 17.5 °C |
| 29 May 2025, 11:09 | 15.1 | 15.1 °C |
| 28 Apr 2025, 10:57 | 11.6 | 11.6 °C |
| 3 Mar 2025, 10:03 | 4.3 | 4.3 °C |
| 17 Feb 2025, 12:22 | 4.3 | 4.3 °C |
| 23 Jan 2025, 11:10 | 5 | 5 °C |
| 11 Dec 2024, 11:51 | 7 | 7 °C |
| 20 Nov 2024, 10:24 | 5.9 | 5.9 °C |
| 14 Oct 2024, 15:08 | 9.8 | 9.8 °C |
| 28 Aug 2024, 08:01 | 15.1 | 15.1 °C |
| 17 Jun 2024, 10:47 | 14 | 14 °C |
pH
code 0061
8.01
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 8.01 | 8.01 |
| 11 Aug 2026, 15:16 | 7.79 | 7.79 |
| 16 Jul 2026, 10:29 | 7.85 | 7.85 |
| 26 Jun 2026, 11:20 | 7.85 | 7.85 |
| 28 May 2026, 10:48 | 8.02 | 8.02 |
| 7 May 2026, 12:05 | 7.99 | 7.99 |
| 30 Apr 2026, 14:04 | 8.2 | 8.2 |
| 30 Apr 2026, 12:52 | 8.16 | 8.16 |
| 11 Mar 2026, 11:34 | 8.12 | 8.12 |
| 2 Feb 2026, 12:08 | 7.93 | 7.93 |
| 15 Jan 2026, 12:07 | 7.74 | 7.74 |
| 16 Dec 2025, 12:38 | 7.95 | 7.95 |
| 26 Nov 2025, 14:15 | 8.1 | 8.1 |
| 27 Oct 2025, 09:38 | 7.78 | 7.78 |
| 10 Sep 2025, 09:21 | 7.88 | 7.88 |
| 15 Aug 2025, 09:43 | 7.98 | 7.98 |
| 16 Jul 2025, 09:59 | 8.05 | 8.05 |
| 16 Jun 2025, 12:43 | 7.96 | 7.96 |
| 29 May 2025, 11:09 | 8.03 | 8.03 |
| 28 Apr 2025, 10:57 | 8.1 | 8.1 |
| 3 Mar 2025, 10:03 | 8 | 8 |
| 17 Feb 2025, 12:22 | 8.04 | 8.04 |
| 23 Jan 2025, 11:10 | 8.1 | 8.1 |
| 11 Dec 2024, 11:51 | 7.88 | 7.88 |
| 20 Nov 2024, 10:24 | 7.95 | 7.95 |
| 14 Oct 2024, 15:08 | 7.9 | 7.9 |
| 28 Aug 2024, 08:01 | 8.06 | 8.06 |
| 17 Jun 2024, 10:47 | 8.12 | 8.12 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.031 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 0.031 | 0.031 mg/l |
| 11 Aug 2026, 15:16 | 0.04 | 0.04 mg/l |
| 16 Jul 2026, 10:29 | 0.13 | 0.13 mg/l |
| 26 Jun 2026, 11:20 | 0.074 | 0.074 mg/l |
| 28 May 2026, 10:48 | 0.076 | 0.076 mg/l |
| 7 May 2026, 12:05 | 0.063 | 0.063 mg/l |
| 30 Apr 2026, 14:04 | 0.19 | 0.19 mg/l |
| 30 Apr 2026, 12:52 | 0.1 | 0.1 mg/l |
| 11 Mar 2026, 11:34 | 0.49 | 0.49 mg/l |
| 2 Feb 2026, 12:08 | 0.034 | 0.034 mg/l |
| 15 Jan 2026, 12:07 | 0.052 | 0.052 mg/l |
| 16 Dec 2025, 12:38 | 0.06 | 0.06 mg/l |
| 26 Nov 2025, 14:15 | 0.11 | 0.11 mg/l |
| 27 Oct 2025, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Sep 2025, 09:21 | 0.048 | 0.048 mg/l |
| 15 Aug 2025, 09:43 | 0.064 | 0.064 mg/l |
| 16 Jul 2025, 09:59 | 0.046 | 0.046 mg/l |
| 16 Jun 2025, 12:43 | 0.051 | 0.051 mg/l |
| 29 May 2025, 11:09 | 0.055 | 0.055 mg/l |
| 28 Apr 2025, 10:57 | 0.049 | 0.049 mg/l |
| 3 Mar 2025, 10:03 | 0.058 | 0.058 mg/l |
| 17 Feb 2025, 12:22 | 0.063 | 0.063 mg/l |
| 23 Jan 2025, 11:10 | 0.064 | 0.064 mg/l |
| 11 Dec 2024, 11:51 | 0.048 | 0.048 mg/l |
| 20 Nov 2024, 10:24 | 0.031 | 0.031 mg/l |
| 14 Oct 2024, 15:08 | 0.061 | 0.061 mg/l |
| 28 Aug 2024, 08:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 10:47 | 0.039 | 0.039 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.29 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 2.29 | 2.29 mg/l |
| 11 Aug 2026, 15:16 | 5.55 | 5.55 mg/l |
| 16 Jul 2026, 10:29 | 4.92 | 4.92 mg/l |
| 26 Jun 2026, 11:20 | 3.84 | 3.84 mg/l |
| 28 May 2026, 10:48 | 4.56 | 4.56 mg/l |
| 7 May 2026, 12:05 | 5.17 | 5.17 mg/l |
| 30 Apr 2026, 14:04 | 3.07 | 3.07 mg/l |
| 30 Apr 2026, 12:52 | 5.18 | 5.18 mg/l |
| 11 Mar 2026, 11:34 | 5.95 | 5.95 mg/l |
| 2 Feb 2026, 12:08 | 4.49 | 4.49 mg/l |
| 15 Jan 2026, 12:07 | 6.19 | 6.19 mg/l |
| 16 Dec 2025, 12:38 | 7.68 | 7.68 mg/l |
| 26 Nov 2025, 14:15 | 9.26 | 9.26 mg/l |
| 27 Oct 2025, 09:38 | 6.37 | 6.37 mg/l |
| 10 Sep 2025, 09:21 | 2.38 | 2.38 mg/l |
| 15 Aug 2025, 09:43 | 3.85 | 3.85 mg/l |
| 16 Jul 2025, 09:59 | 4.65 | 4.65 mg/l |
| 16 Jun 2025, 12:43 | 3.47 | 3.47 mg/l |
| 29 May 2025, 11:09 | 5.26 | 5.26 mg/l |
| 28 Apr 2025, 10:57 | 4.68 | 4.68 mg/l |
| 3 Mar 2025, 10:03 | 6.27 | 6.27 mg/l |
| 17 Feb 2025, 12:22 | 5.68 | 5.68 mg/l |
| 23 Jan 2025, 11:10 | 6.58 | 6.58 mg/l |
| 11 Dec 2024, 11:51 | 5.68 | 5.68 mg/l |
| 20 Nov 2024, 10:24 | 9.88 | 9.88 mg/l |
| 14 Oct 2024, 15:08 | 4.87 | 4.87 mg/l |
| 28 Aug 2024, 08:01 | 5.18 | 5.18 mg/l |
| 17 Jun 2024, 10:47 | 5.68 | 5.68 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.42 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 0.42 | 0.42 mg/l |
| 11 Aug 2026, 15:16 | 0.28 | 0.28 mg/l |
| 16 Jul 2026, 10:29 | 0.37 | 0.37 mg/l |
| 26 Jun 2026, 11:20 | 0.39 | 0.39 mg/l |
| 28 May 2026, 10:48 | 0.22 | 0.22 mg/l |
| 7 May 2026, 12:05 | 0.16 | 0.16 mg/l |
| 30 Apr 2026, 14:04 | 0.11 | 0.11 mg/l |
| 30 Apr 2026, 12:52 | 0.11 | 0.11 mg/l |
| 11 Mar 2026, 11:34 | 0.16 | 0.16 mg/l |
| 2 Feb 2026, 12:08 | 0.2 | 0.2 mg/l |
| 15 Jan 2026, 12:07 | 0.17 | 0.17 mg/l |
| 16 Dec 2025, 12:38 | 0.22 | 0.22 mg/l |
| 26 Nov 2025, 14:15 | 0.14 | 0.14 mg/l |
| 27 Oct 2025, 09:38 | 0.2 | 0.2 mg/l |
| 10 Sep 2025, 09:21 | 0.39 | 0.39 mg/l |
| 15 Aug 2025, 09:43 | 0.41 | 0.41 mg/l |
| 16 Jul 2025, 09:59 | 0.46 | 0.46 mg/l |
| 16 Jun 2025, 12:43 | 0.3 | 0.3 mg/l |
| 29 May 2025, 11:09 | 0.27 | 0.27 mg/l |
| 28 Apr 2025, 10:57 | 0.14 | 0.14 mg/l |
| 3 Mar 2025, 10:03 | 0.13 | 0.13 mg/l |
| 17 Feb 2025, 12:22 | 0.15 | 0.15 mg/l |
| 23 Jan 2025, 11:10 | 0.13 | 0.13 mg/l |
| 11 Dec 2024, 11:51 | 0.17 | 0.17 mg/l |
| 20 Nov 2024, 10:24 | 0.26 | 0.26 mg/l |
| 14 Oct 2024, 15:08 | 0.27 | 0.27 mg/l |
| 28 Aug 2024, 08:01 | 0.28 | 0.28 mg/l |
| 17 Jun 2024, 10:47 | 0.2 | 0.2 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1015 µS/cm
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 15:37 | 1015 | 1015 µS/cm |
| 11 Aug 2026, 15:16 | 953 | 953 µS/cm |
| 16 Jul 2026, 10:29 | 968 | 968 µS/cm |
| 26 Jun 2026, 11:20 | 977 | 977 µS/cm |
| 28 May 2026, 10:48 | 982 | 982 µS/cm |
| 7 May 2026, 12:05 | 1013 | 1013 µS/cm |
| 30 Apr 2026, 14:04 | 1012 | 1012 µS/cm |
| 30 Apr 2026, 12:52 | 1010 | 1010 µS/cm |
| 11 Mar 2026, 11:34 | 815 | 815 µS/cm |
| 2 Feb 2026, 12:08 | 513 | 513 µS/cm |
| 15 Jan 2026, 12:07 | 676 | 676 µS/cm |
| 16 Dec 2025, 12:38 | 622 | 622 µS/cm |
| 26 Nov 2025, 14:15 | 1064 | 1064 µS/cm |
| 27 Oct 2025, 09:38 | 1359 | 1359 µS/cm |
| 10 Sep 2025, 09:21 | 936 | 936 µS/cm |
| 15 Aug 2025, 09:43 | 984 | 984 µS/cm |
| 16 Jul 2025, 09:59 | 985 | 985 µS/cm |
| 16 Jun 2025, 12:43 | 986 | 986 µS/cm |
| 29 May 2025, 11:09 | 1078 | 1078 µS/cm |
| 28 Apr 2025, 10:57 | 1004 | 1004 µS/cm |
| 3 Mar 2025, 10:03 | 886 | 886 µS/cm |
| 17 Feb 2025, 12:22 | 726 | 726 µS/cm |
| 23 Jan 2025, 11:10 | 1001 | 1001 µS/cm |
| 11 Dec 2024, 11:51 | 793 | 793 µS/cm |
| 20 Nov 2024, 10:24 | 777 | 777 µS/cm |
| 14 Oct 2024, 15:08 | 947 | 947 µS/cm |
| 28 Aug 2024, 08:01 | 1041 | 1041 µS/cm |
| 17 Jun 2024, 10:47 | 997 | 997 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 | 28 | Jun 2024 – Sep 2026 | 80% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Jun 2024 – Sep 2026 | 7.94 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 28 | Jun 2024 – Sep 2026 | 15.6 °C 1 Sep 2026 |
| pH 0061 | River water | 28 | Jun 2024 – Sep 2026 | 8.01 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Jun 2024 – Sep 2026 | 0.031 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 28 | Jun 2024 – Sep 2026 | 2.29 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Jun 2024 – Sep 2026 | 0.42 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Jun 2024 – Sep 2026 | 1015 µS/cm 1 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 20 Nov 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Jun 2024 – Sep 2026 | 290 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Jun 2024 – Sep 2026 | 0.00085 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Jun 2024 – May 2026 | 1.5 mg/l 28 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Nitrite as N 0118 | River water | 28 | Jun 2024 – Sep 2026 | 0.0083 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Jun 2024 – Sep 2026 | 2.3 mg/l 1 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Nov 2024 – Nov 2024 | 0.003 µg/l 20 Nov 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | 0.00084 µg/l 20 Nov 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Nov 2024 – Nov 2024 | 0.00064 µg/l 20 Nov 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 20 Nov 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 20 Nov 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Nov 2024 – Nov 2024 | below 0.006 µg/l 20 Nov 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 20 Nov 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 20 Nov 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 20 Nov 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.