Southwick Brook - GB105032045260
EA name: SOUTHWICK BROOK - GB105032045260
Environment Agency sampling point AN-SOUTHWCK · 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, 11:4330 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 2 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 502575, 292069As published, to the nearest 1 m. Open in a map
- River, by its own name
- Southwick Brook
- River, by the map
- Southwick BrookPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- WANSFORD A47 NO1 WITS 16 km along the river
- Why it was sampled
- Monitoring (national agency policy) (28 samples)
Environmental monitoring statutory (EU directives) (6 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
87.3%
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 87.3 | 87.3% |
| 5 Aug 2026, 10:08 | 86.6 | 86.6% |
| 8 Jul 2026, 12:40 | 92.9 | 92.9% |
| 12 Jun 2026, 09:12 | 81.7 | 81.7% |
| 18 May 2026, 10:40 | 98 | 98% |
| 22 Apr 2026, 11:08 | 116 | 116% |
| 10 Mar 2026, 14:31 | 104.6 | 104.6% |
| 13 Feb 2026, 08:53 | 95.2 | 95.2% |
| 13 Jan 2026, 10:10 | 96.7 | 96.7% |
| 4 Dec 2025, 15:50 | 91.3 | 91.3% |
| 12 Nov 2025, 09:16 | 66.3 | 66.3% |
| 9 Oct 2025, 09:10 | 90.6 | 90.6% |
| 4 Sep 2025, 09:37 | 83.2 | 83.2% |
| 5 Aug 2025, 16:05 | 96.1 | 96.1% |
| 7 Jul 2025, 14:45 | 88.1 | 88.1% |
| 9 Jun 2025, 15:12 | 100.9 | 100.9% |
| 12 May 2025, 09:16 | 84 | 84% |
| 25 Apr 2025, 08:53 | 95.6 | 95.6% |
| 10 Mar 2025, 11:05 | 103.8 | 103.8% |
| 6 Feb 2025, 08:36 | 94 | 94% |
| 13 Jan 2025, 15:00 | 99.2 | 99.2% |
| 10 Dec 2024, 09:48 | 97.4 | 97.4% |
| 4 Nov 2024, 09:17 | 82.2 | 82.2% |
| 8 Oct 2024, 08:50 | 90.9 | 90.9% |
| 12 Sep 2024, 07:51 | 89.7 | 89.7% |
| 3 Jul 2024, 09:15 | 87.1 | 87.1% |
| 13 Jun 2024, 09:51 | 106.8 | 106.8% |
| 6 Mar 2024, 08:32 | 95.7 | 95.7% |
| 6 Feb 2024, 11:39 | 96.5 | 96.5% |
| 3 Jan 2024, 10:30 | 97 | 97% |
| 5 Dec 2023, 12:13 | 96.4 | 96.4% |
| 1 Nov 2023, 08:47 | 90.9 | 90.9% |
| 2 Oct 2023, 09:17 | 87 | 87% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.86 mg/l
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 8.86 | 8.86 mg/l |
| 5 Aug 2026, 10:08 | 8.35 | 8.35 mg/l |
| 8 Jul 2026, 12:40 | 8.61 | 8.61 mg/l |
| 12 Jun 2026, 09:12 | 8.51 | 8.51 mg/l |
| 18 May 2026, 10:40 | 10.9 | 10.9 mg/l |
| 22 Apr 2026, 11:08 | 13 | 13 mg/l |
| 10 Mar 2026, 14:31 | 11.8 | 11.8 mg/l |
| 13 Feb 2026, 08:53 | 11.8 | 11.8 mg/l |
| 13 Jan 2026, 10:10 | 11.7 | 11.7 mg/l |
| 4 Dec 2025, 15:50 | 10.8 | 10.8 mg/l |
| 12 Nov 2025, 09:16 | 7.15 | 7.15 mg/l |
| 9 Oct 2025, 09:10 | 10.1 | 10.1 mg/l |
| 4 Sep 2025, 09:37 | 8.59 | 8.59 mg/l |
| 5 Aug 2025, 16:05 | 9.54 | 9.54 mg/l |
| 7 Jul 2025, 14:45 | 8.77 | 8.77 mg/l |
| 9 Jun 2025, 15:12 | 10.3 | 10.3 mg/l |
| 12 May 2025, 09:16 | 8.83 | 8.83 mg/l |
| 25 Apr 2025, 08:53 | 11.6 | 11.6 mg/l |
| 10 Mar 2025, 11:05 | 12.5 | 12.5 mg/l |
| 6 Feb 2025, 08:36 | 12.4 | 12.4 mg/l |
| 13 Jan 2025, 15:00 | 12.5 | 12.5 mg/l |
| 10 Dec 2024, 09:48 | 11.7 | 11.7 mg/l |
| 4 Nov 2024, 09:17 | 9.07 | 9.07 mg/l |
| 8 Oct 2024, 08:50 | 9.73 | 9.73 mg/l |
| 12 Sep 2024, 07:51 | 10.3 | 10.3 mg/l |
| 3 Jul 2024, 09:15 | 9.2 | 9.2 mg/l |
| 13 Jun 2024, 09:51 | 11.7 | 11.7 mg/l |
| 6 Mar 2024, 08:32 | 11.6 | 11.6 mg/l |
| 6 Feb 2024, 11:39 | 11 | 11 mg/l |
| 3 Jan 2024, 10:30 | 11.5 | 11.5 mg/l |
| 5 Dec 2023, 12:13 | 11.8 | 11.8 mg/l |
| 1 Nov 2023, 08:47 | 10 | 10 mg/l |
| 2 Oct 2023, 09:17 | 8.81 | 8.81 mg/l |
Water temperature
code 0076 · °C
14.6 °C
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 14.6 | 14.6 °C |
| 5 Aug 2026, 10:08 | 17 | 17 °C |
| 8 Jul 2026, 12:40 | 18.9 | 18.9 °C |
| 12 Jun 2026, 09:12 | 13.4 | 13.4 °C |
| 18 May 2026, 10:40 | 10.4 | 10.4 °C |
| 22 Apr 2026, 11:08 | 10.1 | 10.1 °C |
| 10 Mar 2026, 14:31 | 9.9 | 9.9 °C |
| 13 Feb 2026, 08:53 | 6.1 | 6.1 °C |
| 13 Jan 2026, 10:10 | 7.1 | 7.1 °C |
| 4 Dec 2025, 15:50 | 7.9 | 7.9 °C |
| 12 Nov 2025, 09:16 | 11.9 | 11.9 °C |
| 9 Oct 2025, 09:10 | 10.4 | 10.4 °C |
| 4 Sep 2025, 09:37 | 13.8 | 13.8 °C |
| 5 Aug 2025, 16:05 | 15.6 | 15.6 °C |
| 7 Jul 2025, 14:45 | 15.5 | 15.5 °C |
| 9 Jun 2025, 15:12 | 14.2 | 14.2 °C |
| 12 May 2025, 09:16 | 13 | 13 °C |
| 25 Apr 2025, 08:53 | 7.1 | 7.1 °C |
| 10 Mar 2025, 11:05 | 7.4 | 7.4 °C |
| 6 Feb 2025, 08:36 | 3.6 | 3.6 °C |
| 13 Jan 2025, 15:00 | 5.4 | 5.4 °C |
| 10 Dec 2024, 09:48 | 7.5 | 7.5 °C |
| 4 Nov 2024, 09:17 | 10.9 | 10.9 °C |
| 8 Oct 2024, 08:50 | 12.2 | 12.2 °C |
| 12 Sep 2024, 07:51 | 9.3 | 9.3 °C |
| 3 Jul 2024, 09:15 | 12.8 | 12.8 °C |
| 13 Jun 2024, 09:51 | 11.1 | 11.1 °C |
| 6 Mar 2024, 08:32 | 7 | 7 °C |
| 6 Feb 2024, 11:39 | 9.5 | 9.5 °C |
| 3 Jan 2024, 10:30 | 7.9 | 7.9 °C |
| 5 Dec 2023, 12:13 | 6.5 | 6.5 °C |
| 1 Nov 2023, 08:47 | 11 | 11 °C |
| 2 Oct 2023, 09:17 | 14.7 | 14.7 °C |
pH
code 0061
7.98
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 7.98 | 7.98 |
| 5 Aug 2026, 10:08 | 7.85 | 7.85 |
| 8 Jul 2026, 12:40 | 8.07 | 8.07 |
| 12 Jun 2026, 09:12 | 7.86 | 7.86 |
| 18 May 2026, 10:40 | 8 | 8 |
| 22 Apr 2026, 11:08 | 8.07 | 8.07 |
| 10 Mar 2026, 14:31 | 8.02 | 8.02 |
| 13 Feb 2026, 08:53 | 8.05 | 8.05 |
| 13 Jan 2026, 10:10 | 7.94 | 7.94 |
| 4 Dec 2025, 15:50 | 7.93 | 7.93 |
| 12 Nov 2025, 09:16 | 7.72 | 7.72 |
| 9 Oct 2025, 09:10 | 8.14 | 8.14 |
| 4 Sep 2025, 09:37 | 8 | 8 |
| 5 Aug 2025, 16:05 | 8.18 | 8.18 |
| 7 Jul 2025, 14:45 | 7.98 | 7.98 |
| 9 Jun 2025, 15:12 | 8.07 | 8.07 |
| 12 May 2025, 09:16 | 7.77 | 7.77 |
| 25 Apr 2025, 08:53 | 8.09 | 8.09 |
| 10 Mar 2025, 11:05 | 8.05 | 8.05 |
| 6 Feb 2025, 08:36 | 8.02 | 8.02 |
| 13 Jan 2025, 15:00 | 8.02 | 8.02 |
| 10 Dec 2024, 09:48 | 8.09 | 8.09 |
| 4 Nov 2024, 09:17 | 7.87 | 7.87 |
| 8 Oct 2024, 08:50 | 7.9 | 7.9 |
| 12 Sep 2024, 07:51 | 8.04 | 8.04 |
| 3 Jul 2024, 09:15 | 7.99 | 7.99 |
| 13 Jun 2024, 09:51 | 8.15 | 8.15 |
| 6 Mar 2024, 08:32 | 8.03 | 8.03 |
| 6 Feb 2024, 11:39 | 7.99 | 7.99 |
| 3 Jan 2024, 10:30 | 7.78 | 7.78 |
| 5 Dec 2023, 12:13 | 7.81 | 7.81 |
| 1 Nov 2023, 08:47 | 7.84 | 7.84 |
| 2 Oct 2023, 09:17 | 8.02 | 8.02 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2026, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jul 2026, 12:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jun 2026, 09:12 | 0.048 | 0.048 mg/l |
| 18 May 2026, 10:40 | 0.055 | 0.055 mg/l |
| 22 Apr 2026, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 14:31 | 0.052 | 0.052 mg/l |
| 13 Feb 2026, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2026, 10:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2025, 15:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Nov 2025, 09:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Oct 2025, 09:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 09:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 16:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jul 2025, 14:45 | 0.055 | 0.055 mg/l |
| 9 Jun 2025, 15:12 | 0.044 | 0.044 mg/l |
| 12 May 2025, 09:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Apr 2025, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2025, 11:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2025, 08:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2025, 15:00 | 0.054 | 0.054 mg/l |
| 10 Dec 2024, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Nov 2024, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2024, 08:50 | 0.033 | 0.033 mg/l |
| 12 Sep 2024, 07:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2024, 09:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jun 2024, 09:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Mar 2024, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jan 2024, 10:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Dec 2023, 12:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2023, 08:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2023, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.49 mg/l
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 2.49 | 2.49 mg/l |
| 5 Aug 2026, 10:08 | 2.39 | 2.39 mg/l |
| 8 Jul 2026, 12:40 | 2.19 | 2.19 mg/l |
| 12 Jun 2026, 09:12 | 2.57 | 2.57 mg/l |
| 18 May 2026, 10:40 | 2.84 | 2.84 mg/l |
| 22 Apr 2026, 11:08 | 2.85 | 2.85 mg/l |
| 10 Mar 2026, 14:31 | 6.49 | 6.49 mg/l |
| 13 Feb 2026, 08:53 | 6.3 | 6.3 mg/l |
| 13 Jan 2026, 10:10 | 11 | 11 mg/l |
| 4 Dec 2025, 15:50 | 14 | 14 mg/l |
| 12 Nov 2025, 09:16 | 1.98 | 1.98 mg/l |
| 9 Oct 2025, 09:10 | 2.39 | 2.39 mg/l |
| 4 Sep 2025, 09:37 | 2.49 | 2.49 mg/l |
| 5 Aug 2025, 16:05 | 2.49 | 2.49 mg/l |
| 7 Jul 2025, 14:45 | 2.18 | 2.18 mg/l |
| 9 Jun 2025, 15:12 | 2.77 | 2.77 mg/l |
| 12 May 2025, 09:16 | 3.06 | 3.06 mg/l |
| 25 Apr 2025, 08:53 | 3.07 | 3.07 mg/l |
| 10 Mar 2025, 11:05 | 5.29 | 5.29 mg/l |
| 6 Feb 2025, 08:36 | 6.49 | 6.49 mg/l |
| 13 Jan 2025, 15:00 | 7.19 | 7.19 mg/l |
| 10 Dec 2024, 09:48 | 11 | 11 mg/l |
| 4 Nov 2024, 09:17 | 3.77 | 3.77 mg/l |
| 8 Oct 2024, 08:50 | 7.28 | 7.28 mg/l |
| 12 Sep 2024, 07:51 | 2.9 | 2.9 mg/l |
| 3 Jul 2024, 09:15 | 3.38 | 3.38 mg/l |
| 13 Jun 2024, 09:51 | 3.48 | 3.48 mg/l |
| 6 Mar 2024, 08:32 | 5.49 | 5.49 mg/l |
| 6 Feb 2024, 11:39 | 5.08 | 5.08 mg/l |
| 3 Jan 2024, 10:30 | 5.99 | 5.99 mg/l |
| 5 Dec 2023, 12:13 | 8.2 | 8.2 mg/l |
| 1 Nov 2023, 08:47 | 11 | 11 mg/l |
| 2 Oct 2023, 09:17 | 2.89 | 2.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 0.19 | 0.19 mg/l |
| 8 Jul 2026, 12:40 | 0.19 | 0.19 mg/l |
| 12 Jun 2026, 09:12 | 0.13 | 0.13 mg/l |
| 18 May 2026, 10:40 | 0.11 | 0.11 mg/l |
| 22 Apr 2026, 11:08 | 0.04 | 0.04 mg/l |
| 10 Mar 2026, 14:31 | 0.076 | 0.076 mg/l |
| 13 Feb 2026, 08:53 | 0.058 | 0.058 mg/l |
| 13 Jan 2026, 10:10 | 0.049 | 0.049 mg/l |
| 4 Dec 2025, 15:50 | 0.069 | 0.069 mg/l |
| 12 Nov 2025, 09:16 | 0.25 | 0.25 mg/l |
| 9 Oct 2025, 09:10 | 0.2 | 0.2 mg/l |
| 4 Sep 2025, 09:37 | 0.24 | 0.24 mg/l |
| 5 Aug 2025, 16:05 | 0.17 | 0.17 mg/l |
| 7 Jul 2025, 14:45 | 0.23 | 0.23 mg/l |
| 9 Jun 2025, 15:12 | 0.12 | 0.12 mg/l |
| 12 May 2025, 09:16 | 0.12 | 0.12 mg/l |
| 25 Apr 2025, 08:53 | 0.052 | 0.052 mg/l |
| 10 Mar 2025, 11:05 | 0.036 | 0.036 mg/l |
| 6 Feb 2025, 08:36 | 0.042 | 0.042 mg/l |
| 13 Jan 2025, 15:00 | 0.048 | 0.048 mg/l |
| 10 Dec 2024, 09:48 | 0.056 | 0.056 mg/l |
| 4 Nov 2024, 09:17 | 0.1 | 0.1 mg/l |
| 8 Oct 2024, 08:50 | 0.1 | 0.1 mg/l |
| 12 Sep 2024, 07:51 | 0.19 | 0.19 mg/l |
| 3 Jul 2024, 09:15 | 0.11 | 0.11 mg/l |
| 13 Jun 2024, 09:51 | 0.086 | 0.086 mg/l |
| 6 Mar 2024, 08:32 | 0.031 | 0.031 mg/l |
| 6 Feb 2024, 11:39 | 0.049 | 0.049 mg/l |
| 3 Jan 2024, 10:30 | 0.065 | 0.065 mg/l |
| 5 Dec 2023, 12:13 | 0.072 | 0.072 mg/l |
| 1 Nov 2023, 08:47 | 0.076 | 0.076 mg/l |
| 2 Oct 2023, 09:17 | 0.21 | 0.21 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1040 µS/cm
Sampled 1 Sep 2026, 30 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 11:43 | 1040 | 1040 µS/cm |
| 5 Aug 2026, 10:08 | 1005 | 1005 µS/cm |
| 8 Jul 2026, 12:40 | 1024 | 1024 µS/cm |
| 12 Jun 2026, 09:12 | 862 | 862 µS/cm |
| 18 May 2026, 10:40 | 1010 | 1010 µS/cm |
| 22 Apr 2026, 11:08 | 981 | 981 µS/cm |
| 10 Mar 2026, 14:31 | 817 | 817 µS/cm |
| 13 Feb 2026, 08:53 | 498 | 498 µS/cm |
| 13 Jan 2026, 10:10 | 685 | 685 µS/cm |
| 4 Dec 2025, 15:50 | 805 | 805 µS/cm |
| 12 Nov 2025, 09:16 | 1026 | 1026 µS/cm |
| 9 Oct 2025, 09:10 | 1046 | 1046 µS/cm |
| 4 Sep 2025, 09:37 | 977 | 977 µS/cm |
| 5 Aug 2025, 16:05 | 1041 | 1041 µS/cm |
| 7 Jul 2025, 14:45 | 883 | 883 µS/cm |
| 9 Jun 2025, 15:12 | 1024 | 1024 µS/cm |
| 12 May 2025, 09:16 | 1040 | 1040 µS/cm |
| 25 Apr 2025, 08:53 | 1023 | 1023 µS/cm |
| 10 Mar 2025, 11:05 | 911 | 911 µS/cm |
| 6 Feb 2025, 08:36 | 842 | 842 µS/cm |
| 13 Jan 2025, 15:00 | 824 | 824 µS/cm |
| 10 Dec 2024, 09:48 | 606 | 606 µS/cm |
| 4 Nov 2024, 09:17 | 997 | 997 µS/cm |
| 8 Oct 2024, 08:50 | 891 | 891 µS/cm |
| 12 Sep 2024, 07:51 | 1006 | 1006 µS/cm |
| 3 Jul 2024, 09:15 | 1025 | 1025 µS/cm |
| 13 Jun 2024, 09:51 | 1025 | 1025 µS/cm |
| 6 Mar 2024, 08:32 | 774 | 774 µS/cm |
| 6 Feb 2024, 11:39 | 915 | 915 µS/cm |
| 3 Jan 2024, 10:30 | 442 | 442 µS/cm |
| 5 Dec 2023, 12:13 | 425 | 425 µS/cm |
| 1 Nov 2023, 08:47 | 598 | 598 µS/cm |
| 2 Oct 2023, 09:17 | 1052 | 1052 µS/cm |
Everything measured here
70 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 70 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Sep 2026 | 87.3% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Sep 2026 | 8.86 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Sep 2026 | 14.6 °C 1 Sep 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Sep 2026 | 7.98 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | below 0.03 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Sep 2026 | 2.49 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.19 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Sep 2026 | 1040 µS/cm 1 Sep 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 4 Dec 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 4 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 4 Dec 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 4 Dec 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 4 Dec 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Sep 2026 | 290 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 32 | Oct 2023 – Sep 2026 | below 0.00073 mg/l 1 Sep 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Sep 2026 | 0.013 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Sep 2026 | 2.5 mg/l 1 Sep 2026 |
| No flow /No sample 7668 | River water | 1 | Aug 2024 – Aug 2024 | No flow/discharge at sampling point 15 Aug 2024 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Dec 2025 – Dec 2025 | 0.0013 µg/l 4 Dec 2025 |
| Perfluorobutanoic acid 2995 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2025 – Dec 2025 | below 0.005 µg/l 4 Dec 2025 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorohexanoic acid 8888 | River water | 1 | Dec 2025 – Dec 2025 | 0.00099 µg/l 4 Dec 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorooctanoic acid 8890 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 4 Dec 2025 |
| Perfluoropentanoic acid 8887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2025 – Dec 2025 | below 0.006 µg/l 4 Dec 2025 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 4 Dec 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 4 Dec 2025 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 4 Dec 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.