Eastcote Brook - Hampton Bridge
EA name: EASTCOTE BROOK - HAMPTON BRIDGE
Environment Agency sampling point MD-63081350 · 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
- 18 May 2026, 10:344 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
- 31 since 6 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 420035, 280254As published, to the nearest 1 m. Open in a map
- River, by its own name
- Eastcote Brook
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 1 m from the line.
- Next gauge downstream
- Castle Farm On the River Blythe · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (31 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.4%
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 92.4 | 92.4% |
| 5 May 2026, 14:41 | 99.4 | 99.4% |
| 13 Apr 2026, 14:20 | 100.6 | 100.6% |
| 1 Apr 2026, 12:32 | 99.4 | 99.4% |
| 16 Mar 2026, 12:08 | 99.2 | 99.2% |
| 10 Mar 2026, 15:13 | 95.9 | 95.9% |
| 26 Feb 2026, 13:56 | 94.3 | 94.3% |
| 2 Feb 2026, 12:18 | 96.4 | 96.4% |
| 28 Jan 2026, 15:38 | 92.6 | 92.6% |
| 8 Jan 2026, 11:44 | 91.9 | 91.9% |
| 17 Dec 2025, 11:10 | 93.7 | 93.7% |
| 4 Dec 2025, 11:03 | 97.9 | 97.9% |
| 17 Nov 2025, 14:03 | 88.3 | 88.3% |
| 11 Nov 2025, 13:24 | 92.1 | 92.1% |
| 15 Oct 2025, 13:47 | 89.8 | 89.8% |
| 15 Oct 2025, 13:46 | 90.9 | 90.9% |
| 30 Sep 2025, 13:37 | 90.8 | 90.8% |
| 14 Aug 2025, 11:40 | 81.2 | 81.2% |
| 9 Jul 2025, 13:02 | 89.6 | 89.6% |
| 12 Jun 2025, 10:58 | 90.7 | 90.7% |
| 9 May 2025, 14:52 | 83.9 | 83.9% |
| 1 Apr 2025, 12:03 | 95.5 | 95.5% |
| 18 Mar 2025, 12:43 | 90.4 | 90.4% |
| 13 Feb 2025, 10:16 | 94.2 | 94.2% |
| 28 Jan 2025, 15:02 | 92.5 | 92.5% |
| 10 Dec 2024, 12:38 | 91.4 | 91.4% |
| 28 Oct 2024, 10:48 | 86.8 | 86.8% |
| 29 Aug 2024, 13:18 | 90.1 | 90.1% |
| 17 Jun 2024, 11:49 | 91.2 | 91.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.44 mg/l
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 9.44 | 9.44 mg/l |
| 5 May 2026, 14:41 | 10 | 10 mg/l |
| 13 Apr 2026, 14:20 | 10.5 | 10.5 mg/l |
| 1 Apr 2026, 12:32 | 10.4 | 10.4 mg/l |
| 16 Mar 2026, 12:08 | 10.9 | 10.9 mg/l |
| 10 Mar 2026, 15:13 | 10.4 | 10.4 mg/l |
| 26 Feb 2026, 13:56 | 10.2 | 10.2 mg/l |
| 2 Feb 2026, 12:18 | 10.8 | 10.8 mg/l |
| 28 Jan 2026, 15:38 | 10.7 | 10.7 mg/l |
| 8 Jan 2026, 11:44 | 10.3 | 10.3 mg/l |
| 17 Dec 2025, 11:10 | 10.4 | 10.4 mg/l |
| 4 Dec 2025, 11:03 | 10.6 | 10.6 mg/l |
| 17 Nov 2025, 14:03 | 9.58 | 9.58 mg/l |
| 11 Nov 2025, 13:24 | 9.38 | 9.38 mg/l |
| 15 Oct 2025, 13:47 | 8.8 | 8.8 mg/l |
| 15 Oct 2025, 13:46 | 8.91 | 8.91 mg/l |
| 30 Sep 2025, 13:37 | 8.66 | 8.66 mg/l |
| 14 Aug 2025, 11:40 | 7.34 | 7.34 mg/l |
| 9 Jul 2025, 13:02 | 8.02 | 8.02 mg/l |
| 12 Jun 2025, 10:58 | 8.56 | 8.56 mg/l |
| 9 May 2025, 14:52 | 8.26 | 8.26 mg/l |
| 1 Apr 2025, 12:03 | 10.2 | 10.2 mg/l |
| 18 Mar 2025, 12:43 | 9.99 | 9.99 mg/l |
| 13 Feb 2025, 10:16 | 10.7 | 10.7 mg/l |
| 28 Jan 2025, 15:02 | 10.7 | 10.7 mg/l |
| 10 Dec 2024, 12:38 | 10.2 | 10.2 mg/l |
| 28 Oct 2024, 10:48 | 8.79 | 8.79 mg/l |
| 29 Aug 2024, 13:18 | 8.32 | 8.32 mg/l |
| 17 Jun 2024, 11:49 | 8.94 | 8.94 mg/l |
Water temperature
code 0076 · °C
14.3 °C
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 14.3 | 14.3 °C |
| 5 May 2026, 14:41 | 14.8 | 14.8 °C |
| 13 Apr 2026, 14:20 | 13.3 | 13.3 °C |
| 1 Apr 2026, 12:32 | 13 | 13 °C |
| 16 Mar 2026, 12:08 | 11.1 | 11.1 °C |
| 10 Mar 2026, 15:13 | 11.7 | 11.7 °C |
| 26 Feb 2026, 13:56 | 11.7 | 11.7 °C |
| 2 Feb 2026, 12:18 | 10.1 | 10.1 °C |
| 28 Jan 2026, 15:38 | 8.8 | 8.8 °C |
| 8 Jan 2026, 11:44 | 10.3 | 10.3 °C |
| 17 Dec 2025, 11:10 | 10.8 | 10.8 °C |
| 4 Dec 2025, 11:03 | 11.9 | 11.9 °C |
| 17 Nov 2025, 14:03 | 11.6 | 11.6 °C |
| 11 Nov 2025, 13:24 | 14.4 | 14.4 °C |
| 15 Oct 2025, 13:47 | 16.2 | 16.2 °C |
| 15 Oct 2025, 13:46 | 16.2 | 16.2 °C |
| 30 Sep 2025, 13:37 | 17.5 | 17.5 °C |
| 14 Aug 2025, 11:40 | 20.2 | 20.2 °C |
| 9 Jul 2025, 13:02 | 20.7 | 20.7 °C |
| 12 Jun 2025, 10:58 | 18 | 18 °C |
| 9 May 2025, 14:52 | 16 | 16 °C |
| 1 Apr 2025, 12:03 | 12.3 | 12.3 °C |
| 18 Mar 2025, 12:43 | 10.8 | 10.8 °C |
| 13 Feb 2025, 10:16 | 9.6 | 9.6 °C |
| 28 Jan 2025, 15:02 | 9 | 9 °C |
| 10 Dec 2024, 12:38 | 10.2 | 10.2 °C |
| 28 Oct 2024, 10:48 | 14.7 | 14.7 °C |
| 29 Aug 2024, 13:18 | 19.1 | 19.1 °C |
| 17 Jun 2024, 11:49 | 16.2 | 16.2 °C |
pH
code 0061
7.36
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 7.36 | 7.36 |
| 5 May 2026, 14:41 | 7.97 | 7.97 |
| 13 Apr 2026, 14:20 | 7.6 | 7.6 |
| 1 Apr 2026, 12:32 | 7.7 | 7.7 |
| 16 Mar 2026, 12:08 | 7.03 | 7.03 |
| 10 Mar 2026, 15:13 | 7 | 7 |
| 26 Feb 2026, 13:56 | 7.66 | 7.66 |
| 2 Feb 2026, 12:18 | 7.55 | 7.55 |
| 28 Jan 2026, 15:38 | 7.42 | 7.42 |
| 8 Jan 2026, 11:44 | 6.92 | 6.92 |
| 17 Dec 2025, 11:10 | 7.72 | 7.72 |
| 4 Dec 2025, 11:03 | 7.48 | 7.48 |
| 17 Nov 2025, 14:03 | 7.66 | 7.66 |
| 11 Nov 2025, 13:24 | 7.7 | 7.7 |
| 15 Oct 2025, 13:47 | 7.24 | 7.24 |
| 15 Oct 2025, 13:46 | 7.31 | 7.31 |
| 30 Sep 2025, 13:37 | 6.6 | 6.6 |
| 14 Aug 2025, 11:40 | 6.84 | 6.84 |
| 9 Jul 2025, 13:02 | 7.17 | 7.17 |
| 12 Jun 2025, 10:58 | 6.98 | 6.98 |
| 9 May 2025, 14:52 | 6.87 | 6.87 |
| 1 Apr 2025, 12:03 | 6.95 | 6.95 |
| 18 Mar 2025, 12:43 | 7.21 | 7.21 |
| 13 Feb 2025, 10:16 | 6.78 | 6.78 |
| 28 Jan 2025, 15:02 | 6.87 | 6.87 |
| 10 Dec 2024, 12:38 | 7.11 | 7.11 |
| 28 Oct 2024, 10:48 | 6.93 | 6.93 |
| 29 Aug 2024, 13:18 | 7.11 | 7.11 |
| 17 Jun 2024, 11:49 | 7.43 | 7.43 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 May 2026, 14:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Apr 2026, 14:20 | 0.048 | 0.048 mg/l |
| 1 Apr 2026, 12:32 | 0.036 | 0.036 mg/l |
| 16 Mar 2026, 12:08 | 0.05 | 0.05 mg/l |
| 10 Mar 2026, 15:13 | 0.038 | 0.038 mg/l |
| 26 Feb 2026, 13:56 | 0.087 | 0.087 mg/l |
| 2 Feb 2026, 12:18 | 0.23 | 0.23 mg/l |
| 28 Jan 2026, 15:38 | 0.22 | 0.22 mg/l |
| 8 Jan 2026, 11:44 | 0.048 | 0.048 mg/l |
| 17 Dec 2025, 11:10 | 0.12 | 0.12 mg/l |
| 4 Dec 2025, 11:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Nov 2025, 14:03 | 0.13 | 0.13 mg/l |
| 11 Nov 2025, 13:24 | 0.031 | 0.031 mg/l |
| 15 Oct 2025, 13:47 | 0.065 | 0.065 mg/l |
| 15 Oct 2025, 13:46 | 0.067 | 0.067 mg/l |
| 30 Sep 2025, 13:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Aug 2025, 11:40 | 0.03 | 0.03 mg/l |
| 9 Jul 2025, 13:02 | 0.16 | 0.16 mg/l |
| 12 Jun 2025, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 14:52 | 0.79 | 0.79 mg/l |
| 1 Apr 2025, 12:03 | 0.62 | 0.62 mg/l |
| 18 Mar 2025, 12:43 | 0.21 | 0.21 mg/l |
| 13 Feb 2025, 10:16 | 0.13 | 0.13 mg/l |
| 28 Jan 2025, 15:02 | 0.56 | 0.56 mg/l |
| 10 Dec 2024, 12:38 | 0.1 | 0.1 mg/l |
| 28 Oct 2024, 10:48 | 0.06 | 0.06 mg/l |
| 29 Aug 2024, 13:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 11:49 | 0.13 | 0.13 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.77 mg/l
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 4.77 | 4.77 mg/l |
| 5 May 2026, 14:41 | 2.66 | 2.66 mg/l |
| 13 Apr 2026, 14:20 | 2.42 | 2.42 mg/l |
| 1 Apr 2026, 12:32 | 5.54 | 5.54 mg/l |
| 16 Mar 2026, 12:08 | 3.87 | 3.87 mg/l |
| 10 Mar 2026, 15:13 | 7.45 | 7.45 mg/l |
| 26 Feb 2026, 13:56 | 4.43 | 4.43 mg/l |
| 2 Feb 2026, 12:18 | 3.77 | 3.77 mg/l |
| 28 Jan 2026, 15:38 | 5.81 | 5.81 mg/l |
| 8 Jan 2026, 11:44 | 3.63 | 3.63 mg/l |
| 17 Dec 2025, 11:10 | 1.59 | 1.59 mg/l |
| 4 Dec 2025, 11:03 | 2.74 | 2.74 mg/l |
| 17 Nov 2025, 14:03 | 3.87 | 3.87 mg/l |
| 11 Nov 2025, 13:24 | 2.15 | 2.15 mg/l |
| 15 Oct 2025, 13:47 | 2.4 | 2.4 mg/l |
| 15 Oct 2025, 13:46 | 2.29 | 2.29 mg/l |
| 30 Sep 2025, 13:37 | 0.639 | 0.639 mg/l |
| 14 Aug 2025, 11:40 | 9.99 | 9.99 mg/l |
| 9 Jul 2025, 13:02 | 0.846 | 0.846 mg/l |
| 12 Jun 2025, 10:58 | 2.44 | 2.44 mg/l |
| 9 May 2025, 14:52 | 0.944 | 0.944 mg/l |
| 1 Apr 2025, 12:03 | 5.59 | 5.59 mg/l |
| 18 Mar 2025, 12:43 | 4.23 | 4.23 mg/l |
| 13 Feb 2025, 10:16 | 5.34 | 5.34 mg/l |
| 28 Jan 2025, 15:02 | 5.17 | 5.17 mg/l |
| 10 Dec 2024, 12:38 | 3.25 | 3.25 mg/l |
| 28 Oct 2024, 10:48 | 4.66 | 4.66 mg/l |
| 29 Aug 2024, 13:18 | 1.48 | 1.48 mg/l |
| 17 Jun 2024, 11:49 | 2.13 | 2.13 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.018 mg/l
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 0.018 | 0.018 mg/l |
| 5 May 2026, 14:41 | 0.037 | 0.037 mg/l |
| 13 Apr 2026, 14:20 | 0.046 | 0.046 mg/l |
| 1 Apr 2026, 12:32 | 0.035 | 0.035 mg/l |
| 16 Mar 2026, 12:08 | 0.028 | 0.028 mg/l |
| 10 Mar 2026, 15:13 | 0.038 | 0.038 mg/l |
| 26 Feb 2026, 13:56 | 0.25 | 0.25 mg/l |
| 2 Feb 2026, 12:18 | 0.097 | 0.097 mg/l |
| 28 Jan 2026, 15:38 | 0.14 | 0.14 mg/l |
| 8 Jan 2026, 11:44 | 0.02 | 0.02 mg/l |
| 17 Dec 2025, 11:10 | 0.16 | 0.16 mg/l |
| 4 Dec 2025, 11:03 | 0.049 | 0.049 mg/l |
| 17 Nov 2025, 14:03 | 0.072 | 0.072 mg/l |
| 11 Nov 2025, 13:24 | 0.036 | 0.036 mg/l |
| 15 Oct 2025, 13:47 | 0.025 | 0.025 mg/l |
| 15 Oct 2025, 13:46 | 0.026 | 0.026 mg/l |
| 30 Sep 2025, 13:37 | 0.024 | 0.024 mg/l |
| 14 Aug 2025, 11:40 | 0.028 | 0.028 mg/l |
| 9 Jul 2025, 13:02 | 0.042 | 0.042 mg/l |
| 12 Jun 2025, 10:58 | 0.03 | 0.03 mg/l |
| 9 May 2025, 14:52 | 0.053 | 0.053 mg/l |
| 1 Apr 2025, 12:03 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Mar 2025, 12:43 | 0.04 | 0.04 mg/l |
| 13 Feb 2025, 10:16 | 0.032 | 0.032 mg/l |
| 28 Jan 2025, 15:02 | 0.18 | 0.18 mg/l |
| 10 Dec 2024, 12:38 | 0.033 | 0.033 mg/l |
| 28 Oct 2024, 10:48 | 0.029 | 0.029 mg/l |
| 29 Aug 2024, 13:18 | 0.024 | 0.024 mg/l |
| 17 Jun 2024, 11:49 | 0.076 | 0.076 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
631 µS/cm
Sampled 18 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 10:34 | 631 | 631 µS/cm |
| 5 May 2026, 14:41 | 659 | 659 µS/cm |
| 13 Apr 2026, 14:20 | 581 | 581 µS/cm |
| 1 Apr 2026, 12:32 | 602 | 602 µS/cm |
| 16 Mar 2026, 12:08 | 553 | 553 µS/cm |
| 10 Mar 2026, 15:13 | 630 | 630 µS/cm |
| 26 Feb 2026, 13:56 | 612 | 612 µS/cm |
| 2 Feb 2026, 12:18 | 559 | 559 µS/cm |
| 28 Jan 2026, 15:38 | 581 | 581 µS/cm |
| 8 Jan 2026, 11:44 | 673 | 673 µS/cm |
| 17 Dec 2025, 11:10 | 517 | 517 µS/cm |
| 4 Dec 2025, 11:03 | 586 | 586 µS/cm |
| 17 Nov 2025, 14:03 | 660 | 660 µS/cm |
| 11 Nov 2025, 13:24 | 484 | 484 µS/cm |
| 15 Oct 2025, 13:47 | 571 | 571 µS/cm |
| 15 Oct 2025, 13:46 | 571 | 571 µS/cm |
| 30 Sep 2025, 13:37 | 572 | 572 µS/cm |
| 14 Aug 2025, 11:40 | 619 | 619 µS/cm |
| 9 Jul 2025, 13:02 | 594 | 594 µS/cm |
| 12 Jun 2025, 10:58 | 661 | 661 µS/cm |
| 9 May 2025, 14:52 | 628 | 628 µS/cm |
| 1 Apr 2025, 12:03 | 620 | 620 µS/cm |
| 18 Mar 2025, 12:43 | 760 | 760 µS/cm |
| 13 Feb 2025, 10:16 | 600 | 600 µS/cm |
| 28 Jan 2025, 15:02 | 513 | 513 µS/cm |
| 10 Dec 2024, 12:38 | 536 | 536 µS/cm |
| 28 Oct 2024, 10:48 | 558 | 558 µS/cm |
| 29 Aug 2024, 13:18 | 563 | 563 µS/cm |
| 17 Jun 2024, 11:49 | 581 | 581 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 | 29 | Jun 2024 – May 2026 | 92.4% 18 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Jun 2024 – May 2026 | 9.44 mg/l 18 May 2026 |
| Temperature of Water 0076 | River water | 29 | Jun 2024 – May 2026 | 14.3 °C 18 May 2026 |
| pH 0061 | River water | 29 | Jun 2024 – May 2026 | 7.36 18 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Jun 2024 – May 2026 | below 0.03 mg/l 18 May 2026 |
| Nitrate as N 0117 | River water | 29 | Jun 2024 – May 2026 | 4.77 mg/l 18 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Jun 2024 – May 2026 | 0.018 mg/l 18 May 2026 |
| Conductivity at 25 C 0077 | River water | 29 | Jun 2024 – May 2026 | 631 µS/cm 18 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 28 Jan 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Jun 2024 – May 2026 | 64 mg/l 18 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Jun 2024 – May 2026 | below 0.00017 mg/l 18 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 29 | Jun 2024 – May 2026 | below 3 mg/l 18 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Nitrite as N 0118 | River water | 29 | Jun 2024 – May 2026 | 0.03 mg/l 18 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Jun 2024 – May 2026 | 4.8 mg/l 18 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | Oct 2023 – Jan 2025 | 0.0043 µg/l 28 Jan 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Oct 2023 – Jan 2025 | 0.0036 µg/l 28 Jan 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | Oct 2023 – Jan 2025 | 0.0038 µg/l 28 Jan 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | Oct 2023 – Jan 2025 | 0.00056 µg/l 28 Jan 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | Oct 2023 – Jan 2025 | 0.0019 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | Oct 2023 – Jan 2025 | 0.00065 µg/l 28 Jan 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Feb 2024 – Jan 2025 | 0.0029 µg/l 28 Jan 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | Oct 2023 – Jan 2025 | 0.0036 µg/l 28 Jan 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | Oct 2023 – Jan 2025 | below 0.001 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Oct 2023 – Jan 2025 | 0.0048 µg/l 28 Jan 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Oct 2023 – Jan 2025 | 0.0038 µg/l 28 Jan 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | Oct 2023 – Jan 2025 | 0.0048 µg/l 28 Jan 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Oct 2023 – Jan 2025 | below 0.0005 µg/l 28 Jan 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | Oct 2023 – Jan 2025 | 0.0031 µg/l 28 Jan 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | Oct 2023 – Jan 2025 | below 0.006 µg/l 28 Jan 2025 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Oct 2023 – Jan 2025 | below 0.005 µg/l 28 Jan 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | Oct 2023 – Jan 2025 | below 0.004 µg/l 28 Jan 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | Oct 2023 – Jan 2025 | below 0.002 µg/l 28 Jan 2025 |
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.