Stainfield Beck
EA name: STAINFIELD BECK (also listed as “STAINFIELD BECK AT STAINFIELD”)
Environment Agency sampling point AN-STAINBCK · 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
- 9 Sep 2026, 08:2922 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 31 since 16 Oct 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 510893, 373249As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stainfield Beck
- River, by the map
- Stainfield BeckPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Bardney On the River Witham · 5.6 km along the river
- Nearest gauge upstream
- Stainfield Beck On the Stainfield Beck · 2.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Monitoring (national agency policy) (8 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
72.3%
Sampled 9 Sep 2026, 22 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 72.3 | 72.3% |
| 26 Aug 2026, 09:53 | 69.1 | 69.1% |
| 10 Jul 2026, 08:28 | 42.3 | 42.3% |
| 25 Jun 2026, 09:10 | 70.5 | 70.5% |
| 18 May 2026, 08:45 | 91.1 | 91.1% |
| 16 Apr 2026, 14:23 | 120.9 | 120.9% |
| 17 Mar 2026, 11:32 | 107.2 | 107.2% |
| 19 Feb 2026, 10:46 | 98.3 | 98.3% |
| 19 Jan 2026, 10:48 | 97.6 | 97.6% |
| 10 Dec 2025, 10:12 | 92.8 | 92.8% |
| 24 Nov 2025, 11:56 | 91.9 | 91.9% |
| 13 Oct 2025, 09:07 | 77.6 | 77.6% |
| 7 Apr 2025, 11:00 | 103.2 | 103.2% |
| 20 Mar 2025, 09:00 | 101.4 | 101.4% |
| 7 Feb 2025, 10:12 | 99.2 | 99.2% |
| 22 Jan 2025, 10:24 | 99.1 | 99.1% |
| 10 Dec 2024, 08:46 | 94.6 | 94.6% |
| 18 Nov 2024, 11:08 | 99.3 | 99.3% |
| 23 Oct 2024, 09:35 | 95.8 | 95.8% |
| 18 Sep 2024, 11:27 | 97.8 | 97.8% |
| 19 Aug 2024, 11:10 | 99.7 | 99.7% |
| 16 Jul 2024, 13:16 | 88.2 | 88.2% |
| 19 Jun 2024, 07:57 | 95.1 | 95.1% |
| 13 May 2024, 09:34 | 100.5 | 100.5% |
| 17 Apr 2024, 09:05 | 101.2 | 101.2% |
| 18 Mar 2024, 07:55 | 97.4 | 97.4% |
| 19 Feb 2024, 07:56 | 93.8 | 93.8% |
| 15 Jan 2024, 07:56 | 97.2 | 97.2% |
| 14 Dec 2023, 08:13 | 95.8 | 95.8% |
| 22 Nov 2023, 08:46 | 94.8 | 94.8% |
| 16 Oct 2023, 08:33 | 90.1 | 90.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.65 mg/l
Sampled 9 Sep 2026, 22 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 7.65 | 7.65 mg/l |
| 26 Aug 2026, 09:53 | 6.7 | 6.7 mg/l |
| 10 Jul 2026, 08:28 | 3.92 | 3.92 mg/l |
| 25 Jun 2026, 09:10 | 6.41 | 6.41 mg/l |
| 18 May 2026, 08:45 | 10.2 | 10.2 mg/l |
| 16 Apr 2026, 14:23 | 12.8 | 12.8 mg/l |
| 17 Mar 2026, 11:32 | 12.3 | 12.3 mg/l |
| 19 Feb 2026, 10:46 | 12.5 | 12.5 mg/l |
| 19 Jan 2026, 10:48 | 12.2 | 12.2 mg/l |
| 10 Dec 2025, 10:12 | 10.8 | 10.8 mg/l |
| 24 Nov 2025, 11:56 | 11.1 | 11.1 mg/l |
| 13 Oct 2025, 09:07 | 8.54 | 8.54 mg/l |
| 7 Apr 2025, 11:00 | 12.5 | 12.5 mg/l |
| 20 Mar 2025, 09:00 | 12.7 | 12.7 mg/l |
| 7 Feb 2025, 10:12 | 13.1 | 13.1 mg/l |
| 22 Jan 2025, 10:24 | 12.8 | 12.8 mg/l |
| 10 Dec 2024, 08:46 | 11.4 | 11.4 mg/l |
| 18 Nov 2024, 11:08 | 12.6 | 12.6 mg/l |
| 23 Oct 2024, 09:35 | 10.8 | 10.8 mg/l |
| 18 Sep 2024, 11:27 | 10.3 | 10.3 mg/l |
| 19 Aug 2024, 11:10 | 10 | 10 mg/l |
| 16 Jul 2024, 13:16 | 8.76 | 8.76 mg/l |
| 19 Jun 2024, 07:57 | 10 | 10 mg/l |
| 13 May 2024, 09:34 | 10 | 10 mg/l |
| 17 Apr 2024, 09:05 | 12.1 | 12.1 mg/l |
| 18 Mar 2024, 07:55 | 11.5 | 11.5 mg/l |
| 19 Feb 2024, 07:56 | 11 | 11 mg/l |
| 15 Jan 2024, 07:56 | 13.3 | 13.3 mg/l |
| 14 Dec 2023, 08:13 | 12.1 | 12.1 mg/l |
| 22 Nov 2023, 08:46 | 11.1 | 11.1 mg/l |
| 16 Oct 2023, 08:33 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
12.7 °C
Sampled 9 Sep 2026, 22 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 12.7 | 12.7 °C |
| 26 Aug 2026, 09:53 | 16.7 | 16.7 °C |
| 10 Jul 2026, 08:28 | 18.9 | 18.9 °C |
| 25 Jun 2026, 09:10 | 19.9 | 19.9 °C |
| 18 May 2026, 08:45 | 10.3 | 10.3 °C |
| 16 Apr 2026, 14:23 | 12.7 | 12.7 °C |
| 17 Mar 2026, 11:32 | 9.3 | 9.3 °C |
| 19 Feb 2026, 10:46 | 5.1 | 5.1 °C |
| 19 Jan 2026, 10:48 | 5.9 | 5.9 °C |
| 10 Dec 2025, 10:12 | 8.5 | 8.5 °C |
| 24 Nov 2025, 11:56 | 7.1 | 7.1 °C |
| 13 Oct 2025, 09:07 | 11 | 11 °C |
| 7 Apr 2025, 11:00 | 7.1 | 7.1 °C |
| 20 Mar 2025, 09:00 | 5.7 | 5.7 °C |
| 7 Feb 2025, 10:12 | 3.7 | 3.7 °C |
| 22 Jan 2025, 10:24 | 4.5 | 4.5 °C |
| 10 Dec 2024, 08:46 | 7.4 | 7.4 °C |
| 18 Nov 2024, 11:08 | 5.1 | 5.1 °C |
| 23 Oct 2024, 09:35 | 9.9 | 9.9 °C |
| 18 Sep 2024, 11:27 | 13.1 | 13.1 °C |
| 19 Aug 2024, 11:10 | 14.9 | 14.9 °C |
| 16 Jul 2024, 13:16 | 15.6 | 15.6 °C |
| 19 Jun 2024, 07:57 | 12.8 | 12.8 °C |
| 13 May 2024, 09:34 | 15.3 | 15.3 °C |
| 17 Apr 2024, 09:05 | 7.4 | 7.4 °C |
| 18 Mar 2024, 07:55 | 8.1 | 8.1 °C |
| 19 Feb 2024, 07:56 | 8.3 | 8.3 °C |
| 15 Jan 2024, 07:56 | 2.3 | 2.3 °C |
| 14 Dec 2023, 08:13 | 5.3 | 5.3 °C |
| 22 Nov 2023, 08:46 | 8.5 | 8.5 °C |
| 16 Oct 2023, 08:33 | 9.4 | 9.4 °C |
pH
code 0061
7.91
Sampled 9 Sep 2026, 22 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 7.91 | 7.91 |
| 26 Aug 2026, 09:53 | 7.74 | 7.74 |
| 10 Jul 2026, 08:28 | 7.78 | 7.78 |
| 25 Jun 2026, 09:10 | 7.91 | 7.91 |
| 18 May 2026, 08:45 | 8 | 8 |
| 16 Apr 2026, 14:23 | 8.57 | 8.57 |
| 17 Mar 2026, 11:32 | 8.27 | 8.27 |
| 19 Feb 2026, 10:46 | 8.07 | 8.07 |
| 19 Jan 2026, 10:48 | 8.23 | 8.23 |
| 10 Dec 2025, 10:12 | 8.02 | 8.02 |
| 24 Nov 2025, 11:56 | 7.94 | 7.94 |
| 13 Oct 2025, 09:07 | 7.91 | 7.91 |
| 7 Apr 2025, 11:00 | 8.25 | 8.25 |
| 20 Mar 2025, 09:00 | 8.3 | 8.3 |
| 7 Feb 2025, 10:12 | 8.27 | 8.27 |
| 22 Jan 2025, 10:24 | 8.23 | 8.23 |
| 10 Dec 2024, 08:46 | 7.88 | 7.88 |
| 18 Nov 2024, 11:08 | 8.34 | 8.34 |
| 23 Oct 2024, 09:35 | 8.1 | 8.1 |
| 18 Sep 2024, 11:27 | 8.12 | 8.12 |
| 19 Aug 2024, 11:10 | 8.18 | 8.18 |
| 16 Jul 2024, 13:16 | 7.73 | 7.73 |
| 19 Jun 2024, 07:57 | 8.25 | 8.25 |
| 13 May 2024, 09:34 | 8.15 | 8.15 |
| 17 Apr 2024, 09:05 | 8.33 | 8.33 |
| 18 Mar 2024, 07:55 | 8.25 | 8.25 |
| 19 Feb 2024, 07:56 | 7.96 | 7.96 |
| 15 Jan 2024, 07:56 | 8.33 | 8.33 |
| 14 Dec 2023, 08:13 | 8.06 | 8.06 |
| 22 Nov 2023, 08:46 | 8.18 | 8.18 |
| 16 Oct 2023, 08:33 | 8.06 | 8.06 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.08 mg/l
Sampled 9 Sep 2026, 22 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 0.08 | 0.08 mg/l |
| 26 Aug 2026, 09:53 | 0.19 | 0.19 mg/l |
| 10 Jul 2026, 08:28 | 0.16 | 0.16 mg/l |
| 25 Jun 2026, 09:10 | 0.21 | 0.21 mg/l |
| 18 May 2026, 08:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 14:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 11:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2026, 10:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jan 2026, 10:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Dec 2025, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Nov 2025, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Oct 2025, 09:07 | 0.05 | 0.05 mg/l |
| 20 Mar 2025, 09:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Feb 2025, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2025, 10:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Dec 2024, 08:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2024, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Oct 2024, 09:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Sep 2024, 11:27 | 0.032 | 0.032 mg/l |
| 19 Aug 2024, 11:10 | 0.083 | 0.083 mg/l |
| 16 Jul 2024, 13:16 | 0.034 | 0.034 mg/l |
| 19 Jun 2024, 07:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 09:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2024, 09:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 07:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2024, 07:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jan 2024, 07:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Dec 2023, 08:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Nov 2023, 08:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2023, 08:33 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 9 Sep 2026, 22 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | <0.196 | below 0.196 mg/l (not detected above this) |
| 26 Aug 2026, 09:53 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jul 2026, 08:28 | 0.193 | 0.193 mg/l |
| 25 Jun 2026, 09:10 | 0.629 | 0.629 mg/l |
| 18 May 2026, 08:45 | 4.28 | 4.28 mg/l |
| 16 Apr 2026, 14:23 | 6.48 | 6.48 mg/l |
| 17 Mar 2026, 11:32 | 7.19 | 7.19 mg/l |
| 19 Feb 2026, 10:46 | 8 | 8 mg/l |
| 19 Jan 2026, 10:48 | 9.09 | 9.09 mg/l |
| 10 Dec 2025, 10:12 | 11 | 11 mg/l |
| 24 Nov 2025, 11:56 | 14 | 14 mg/l |
| 13 Oct 2025, 09:07 | 0.356 | 0.356 mg/l |
| 20 Mar 2025, 09:00 | 8.49 | 8.49 mg/l |
| 7 Feb 2025, 10:12 | 9.69 | 9.69 mg/l |
| 22 Jan 2025, 10:24 | 9.18 | 9.18 mg/l |
| 10 Dec 2024, 08:46 | 11 | 11 mg/l |
| 18 Nov 2024, 11:08 | 6.49 | 6.49 mg/l |
| 23 Oct 2024, 09:35 | 9.09 | 9.09 mg/l |
| 18 Sep 2024, 11:27 | 3.09 | 3.09 mg/l |
| 19 Aug 2024, 11:10 | 3.19 | 3.19 mg/l |
| 16 Jul 2024, 13:16 | 2.88 | 2.88 mg/l |
| 19 Jun 2024, 07:57 | 5.98 | 5.98 mg/l |
| 13 May 2024, 09:34 | 7.56 | 7.56 mg/l |
| 17 Apr 2024, 09:05 | 7.18 | 7.18 mg/l |
| 18 Mar 2024, 07:55 | 6.99 | 6.99 mg/l |
| 19 Feb 2024, 07:56 | 8.19 | 8.19 mg/l |
| 15 Jan 2024, 07:56 | 9.59 | 9.59 mg/l |
| 14 Dec 2023, 08:13 | 9.09 | 9.09 mg/l |
| 22 Nov 2023, 08:46 | 11 | 11 mg/l |
| 16 Oct 2023, 08:33 | 16 | 16 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.031 mg/l
Sampled 9 Sep 2026, 22 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 0.031 | 0.031 mg/l |
| 26 Aug 2026, 09:53 | 0.059 | 0.059 mg/l |
| 10 Jul 2026, 08:28 | 0.065 | 0.065 mg/l |
| 25 Jun 2026, 09:10 | 0.048 | 0.048 mg/l |
| 18 May 2026, 08:45 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Apr 2026, 14:23 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Mar 2026, 11:32 | 0.043 | 0.043 mg/l |
| 19 Feb 2026, 10:46 | 0.049 | 0.049 mg/l |
| 19 Jan 2026, 10:48 | 0.053 | 0.053 mg/l |
| 10 Dec 2025, 10:12 | 0.062 | 0.062 mg/l |
| 24 Nov 2025, 11:56 | 0.054 | 0.054 mg/l |
| 13 Oct 2025, 09:07 | 0.011 | 0.011 mg/l |
| 20 Mar 2025, 09:00 | <0.01 | below 0.01 mg/l (not detected above this) |
| 7 Feb 2025, 10:12 | 0.036 | 0.036 mg/l |
| 22 Jan 2025, 10:24 | 0.045 | 0.045 mg/l |
| 18 Nov 2024, 11:08 | 0.025 | 0.025 mg/l |
| 23 Oct 2024, 09:35 | 0.026 | 0.026 mg/l |
| 18 Sep 2024, 11:27 | 0.046 | 0.046 mg/l |
| 19 Aug 2024, 11:10 | 0.026 | 0.026 mg/l |
| 16 Jul 2024, 13:16 | 0.14 | 0.14 mg/l |
| 19 Jun 2024, 07:57 | 0.041 | 0.041 mg/l |
| 13 May 2024, 09:34 | <0.01 | below 0.01 mg/l (not detected above this) |
| 17 Apr 2024, 09:05 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Mar 2024, 07:55 | 0.038 | 0.038 mg/l |
| 19 Feb 2024, 07:56 | 0.056 | 0.056 mg/l |
| 15 Jan 2024, 07:56 | 0.058 | 0.058 mg/l |
| 14 Dec 2023, 08:13 | 0.057 | 0.057 mg/l |
| 22 Nov 2023, 08:46 | 0.038 | 0.038 mg/l |
| 16 Oct 2023, 08:33 | 0.045 | 0.045 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
614 µS/cm
Sampled 9 Sep 2026, 22 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2026, 08:29 | 614 | 614 µS/cm |
| 26 Aug 2026, 09:53 | 667 | 667 µS/cm |
| 10 Jul 2026, 08:28 | 647 | 647 µS/cm |
| 25 Jun 2026, 09:10 | 620 | 620 µS/cm |
| 18 May 2026, 08:45 | 607 | 607 µS/cm |
| 16 Apr 2026, 14:23 | 628 | 628 µS/cm |
| 17 Mar 2026, 11:32 | 638 | 638 µS/cm |
| 19 Feb 2026, 10:46 | 622 | 622 µS/cm |
| 19 Jan 2026, 10:48 | 630 | 630 µS/cm |
| 10 Dec 2025, 10:12 | 589 | 589 µS/cm |
| 24 Nov 2025, 11:56 | 619 | 619 µS/cm |
| 13 Oct 2025, 09:07 | 628 | 628 µS/cm |
| 7 Apr 2025, 11:00 | 652 | 652 µS/cm |
| 20 Mar 2025, 09:00 | 640 | 640 µS/cm |
| 7 Feb 2025, 10:12 | 716 | 716 µS/cm |
| 22 Jan 2025, 10:24 | 726 | 726 µS/cm |
| 10 Dec 2024, 08:46 | 600 | 600 µS/cm |
| 18 Nov 2024, 11:08 | 683 | 683 µS/cm |
| 23 Oct 2024, 09:35 | 658 | 658 µS/cm |
| 18 Sep 2024, 11:27 | 651 | 651 µS/cm |
| 19 Aug 2024, 11:10 | 635 | 635 µS/cm |
| 16 Jul 2024, 13:16 | 362 | 362 µS/cm |
| 19 Jun 2024, 07:57 | 663 | 663 µS/cm |
| 13 May 2024, 09:34 | 661 | 661 µS/cm |
| 17 Apr 2024, 09:05 | 638 | 638 µS/cm |
| 18 Mar 2024, 07:55 | 636 | 636 µS/cm |
| 19 Feb 2024, 07:56 | 598 | 598 µS/cm |
| 15 Jan 2024, 07:56 | 714 | 714 µS/cm |
| 14 Dec 2023, 08:13 | 596 | 596 µS/cm |
| 22 Nov 2023, 08:46 | 705 | 705 µS/cm |
| 16 Oct 2023, 08:33 | 722 | 722 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 31 | Oct 2023 – Sep 2026 | 72.3% 9 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Oct 2023 – Sep 2026 | 7.65 mg/l 9 Sep 2026 |
| Temperature of Water 0076 | River water | 31 | Oct 2023 – Sep 2026 | 12.7 °C 9 Sep 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Sep 2026 | 7.91 9 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 30 | Oct 2023 – Sep 2026 | 0.08 mg/l 9 Sep 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – Sep 2026 | below 0.196 mg/l 9 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Oct 2023 – Sep 2026 | 0.031 mg/l 9 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Oct 2023 – Sep 2026 | 614 µS/cm 9 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – Sep 2026 | 210 mg/l 9 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – Sep 2026 | 0.00145 mg/l 9 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.7 mg/l 20 Mar 2025 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Sep 2026 | below 0.004 mg/l 9 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – Sep 2026 | below 0.2 mg/l 9 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.