Devilsden Stream downstream of Ticehurst
EA name: DEVILSDEN STREAM D/S TICEHURST (also listed as “DEVILSDEN STREAM DOWNSTREAM TICEHURST SEWAGE WORKS AT LITTLE BOARZELL”)
Environment Agency sampling point SO-E0001770 · 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
- 21 May 2026, 11:004 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
- 33 since 26 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 571698, 128402As published, to the nearest 1 m. Open in a map
- River, by its own name
- Devilsden Stream
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 12 m from the line.
- Next gauge downstream
- UDIAM GS 11 km along the riverUdiam On the River Rother · 11 km along the river
- Why it was sampled
- Monitoring (national agency policy) (21 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
86.5%
Sampled 21 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 86.5 | 86.5% |
| 13 May 2026, 10:12 | 88.7 | 88.7% |
| 14 Apr 2026, 12:36 | 93.4 | 93.4% |
| 9 Apr 2026, 12:42 | 88.9 | 88.9% |
| 27 Mar 2026, 08:53 | 93 | 93% |
| 9 Mar 2026, 10:42 | 95.8 | 95.8% |
| 20 Feb 2026, 11:47 | 98.5 | 98.5% |
| 5 Feb 2026, 09:05 | 99.3 | 99.3% |
| 20 Jan 2026, 08:47 | 94.2 | 94.2% |
| 6 Jan 2026, 10:29 | 93.1 | 93.1% |
| 15 Dec 2025, 11:16 | 90.5 | 90.5% |
| 2 Dec 2025, 09:15 | 87.8 | 87.8% |
| 17 Nov 2025, 14:06 | 80.4 | 80.4% |
| 10 Nov 2025, 09:52 | 71.3 | 71.3% |
| 17 Oct 2025, 09:17 | 76.7 | 76.7% |
| 2 Sep 2025, 09:37 | 82.3 | 82.3% |
| 13 Aug 2025, 10:32 | 72.2 | 72.2% |
| 8 Jul 2025, 11:36 | 85.7 | 85.7% |
| 4 Jun 2025, 13:05 | 81.7 | 81.7% |
| 8 May 2025, 08:56 | 87.2 | 87.2% |
| 3 Apr 2025, 13:49 | 96.7 | 96.7% |
| 27 Mar 2025, 08:12 | 91.9 | 91.9% |
| 18 Mar 2025, 10:09 | 91.4 | 91.4% |
| 28 Feb 2025, 11:14 | 95.1 | 95.1% |
| 11 Dec 2024, 12:03 | 95.5 | 95.5% |
| 29 Nov 2024, 11:27 | 95.2 | 95.2% |
| 22 Oct 2024, 13:11 | 93.9 | 93.9% |
| 23 Sep 2024, 10:00 | 94.2 | 94.2% |
| 28 Aug 2024, 12:20 | 89.4 | 89.4% |
| 18 Jul 2024, 12:04 | 82.5 | 82.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.99 mg/l
Sampled 21 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 8.99 | 8.99 mg/l |
| 13 May 2026, 10:12 | 10 | 10 mg/l |
| 14 Apr 2026, 12:36 | 10.5 | 10.5 mg/l |
| 9 Apr 2026, 12:42 | 9.52 | 9.52 mg/l |
| 27 Mar 2026, 08:53 | 11 | 11 mg/l |
| 9 Mar 2026, 10:42 | 10.9 | 10.9 mg/l |
| 20 Feb 2026, 11:47 | 11.6 | 11.6 mg/l |
| 5 Feb 2026, 09:05 | 11.8 | 11.8 mg/l |
| 20 Jan 2026, 08:47 | 11 | 11 mg/l |
| 6 Jan 2026, 10:29 | 13.5 | 13.5 mg/l |
| 15 Dec 2025, 11:16 | 10.4 | 10.4 mg/l |
| 2 Dec 2025, 09:15 | 10.3 | 10.3 mg/l |
| 17 Nov 2025, 14:06 | 9.3 | 9.3 mg/l |
| 10 Nov 2025, 09:52 | 7.77 | 7.77 mg/l |
| 17 Oct 2025, 09:17 | 8.14 | 8.14 mg/l |
| 2 Sep 2025, 09:37 | 8.33 | 8.33 mg/l |
| 13 Aug 2025, 10:32 | 6.79 | 6.79 mg/l |
| 8 Jul 2025, 11:36 | 8.58 | 8.58 mg/l |
| 4 Jun 2025, 13:05 | 8.53 | 8.53 mg/l |
| 8 May 2025, 08:56 | 9.78 | 9.78 mg/l |
| 3 Apr 2025, 13:49 | 10.6 | 10.6 mg/l |
| 27 Mar 2025, 08:12 | 11.1 | 11.1 mg/l |
| 18 Mar 2025, 10:09 | 11.4 | 11.4 mg/l |
| 28 Feb 2025, 11:14 | 11.8 | 11.8 mg/l |
| 11 Dec 2024, 12:03 | 11.2 | 11.2 mg/l |
| 29 Nov 2024, 11:27 | 11.5 | 11.5 mg/l |
| 22 Oct 2024, 13:11 | 10.1 | 10.1 mg/l |
| 23 Sep 2024, 10:00 | 9.27 | 9.27 mg/l |
| 28 Aug 2024, 12:20 | 8.58 | 8.58 mg/l |
| 18 Jul 2024, 12:04 | 7.94 | 7.94 mg/l |
Water temperature
code 0076 · °C
13.5 °C
Sampled 21 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 13.5 | 13.5 °C |
| 13 May 2026, 10:12 | 9.9 | 9.9 °C |
| 14 Apr 2026, 12:36 | 10.1 | 10.1 °C |
| 9 Apr 2026, 12:42 | 12.2 | 12.2 °C |
| 27 Mar 2026, 08:53 | 8 | 8 °C |
| 9 Mar 2026, 10:42 | 9.6 | 9.6 °C |
| 20 Feb 2026, 11:47 | 8.3 | 8.3 °C |
| 5 Feb 2026, 09:05 | 7.9 | 7.9 °C |
| 20 Jan 2026, 08:47 | 8.6 | 8.6 °C |
| 6 Jan 2026, 10:29 | 0.2 | 0.2 °C |
| 15 Dec 2025, 11:16 | 9.2 | 9.2 °C |
| 2 Dec 2025, 09:15 | 8.4 | 8.4 °C |
| 17 Nov 2025, 14:06 | 8.9 | 8.9 °C |
| 10 Nov 2025, 09:52 | 11.4 | 11.4 °C |
| 17 Oct 2025, 09:17 | 12.6 | 12.6 °C |
| 2 Sep 2025, 09:37 | 14.7 | 14.7 °C |
| 13 Aug 2025, 10:32 | 18.2 | 18.2 °C |
| 8 Jul 2025, 11:36 | 15.2 | 15.2 °C |
| 4 Jun 2025, 13:05 | 13.3 | 13.3 °C |
| 8 May 2025, 08:56 | 10.2 | 10.2 °C |
| 3 Apr 2025, 13:49 | 11.2 | 11.2 °C |
| 27 Mar 2025, 08:12 | 7.2 | 7.2 °C |
| 18 Mar 2025, 10:09 | 6 | 6 °C |
| 28 Feb 2025, 11:14 | 6.2 | 6.2 °C |
| 11 Dec 2024, 12:03 | 8.4 | 8.4 °C |
| 29 Nov 2024, 11:27 | 7 | 7 °C |
| 22 Oct 2024, 13:11 | 11.8 | 11.8 °C |
| 23 Sep 2024, 10:00 | 16 | 16 °C |
| 28 Aug 2024, 12:20 | 17.2 | 17.2 °C |
| 18 Jul 2024, 12:04 | 17.1 | 17.1 °C |
pH
code 0061
7.48
Sampled 21 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 7.48 | 7.48 |
| 13 May 2026, 10:12 | 7.5 | 7.5 |
| 14 Apr 2026, 12:36 | 7.46 | 7.46 |
| 9 Apr 2026, 12:42 | 7.23 | 7.23 |
| 27 Mar 2026, 08:53 | 7.51 | 7.51 |
| 9 Mar 2026, 10:42 | 7.54 | 7.54 |
| 20 Feb 2026, 11:47 | 7.44 | 7.44 |
| 5 Feb 2026, 09:05 | 7.39 | 7.39 |
| 20 Jan 2026, 08:47 | 7.47 | 7.47 |
| 6 Jan 2026, 10:29 | 7.52 | 7.52 |
| 15 Dec 2025, 11:16 | 7.31 | 7.31 |
| 2 Dec 2025, 09:15 | 7.27 | 7.27 |
| 17 Nov 2025, 14:06 | 7.47 | 7.47 |
| 10 Nov 2025, 09:52 | 7.29 | 7.29 |
| 17 Oct 2025, 09:17 | 7.56 | 7.56 |
| 2 Sep 2025, 09:37 | 7.85 | 7.85 |
| 13 Aug 2025, 10:32 | 7.73 | 7.73 |
| 8 Jul 2025, 11:36 | 7.4 | 7.4 |
| 4 Jun 2025, 13:05 | 7.31 | 7.31 |
| 8 May 2025, 08:56 | 7.6 | 7.6 |
| 3 Apr 2025, 13:49 | 7.46 | 7.46 |
| 27 Mar 2025, 08:12 | 7.5 | 7.5 |
| 18 Mar 2025, 10:09 | 7.31 | 7.31 |
| 28 Feb 2025, 11:14 | 7.48 | 7.48 |
| 11 Dec 2024, 12:03 | 7.21 | 7.21 |
| 29 Nov 2024, 11:27 | 7.09 | 7.09 |
| 22 Oct 2024, 13:11 | 7.37 | 7.37 |
| 23 Sep 2024, 10:00 | 7.44 | 7.44 |
| 28 Aug 2024, 12:20 | 7.77 | 7.77 |
| 18 Jul 2024, 12:04 | 7.6 | 7.6 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.042 mg/l
Sampled 21 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 0.042 | 0.042 mg/l |
| 13 May 2026, 10:12 | 0.043 | 0.043 mg/l |
| 14 Apr 2026, 12:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2026, 12:42 | 0.045 | 0.045 mg/l |
| 27 Mar 2026, 08:53 | 0.3 | 0.3 mg/l |
| 9 Mar 2026, 10:42 | 0.032 | 0.032 mg/l |
| 20 Feb 2026, 11:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 09:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2026, 08:47 | 0.072 | 0.072 mg/l |
| 6 Jan 2026, 10:29 | 0.5 | 0.5 mg/l |
| 15 Dec 2025, 11:16 | 0.14 | 0.14 mg/l |
| 2 Dec 2025, 09:15 | 0.49 | 0.49 mg/l |
| 17 Nov 2025, 14:06 | 0.071 | 0.071 mg/l |
| 10 Nov 2025, 09:52 | 0.038 | 0.038 mg/l |
| 17 Oct 2025, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2025, 09:37 | 0.053 | 0.053 mg/l |
| 13 Aug 2025, 10:32 | 0.062 | 0.062 mg/l |
| 8 Jul 2025, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jun 2025, 13:05 | 0.3 | 0.3 mg/l |
| 8 May 2025, 08:56 | 0.039 | 0.039 mg/l |
| 27 Mar 2025, 08:12 | 0.071 | 0.071 mg/l |
| 18 Mar 2025, 10:09 | 0.44 | 0.44 mg/l |
| 28 Feb 2025, 11:14 | 0.31 | 0.31 mg/l |
| 11 Dec 2024, 12:03 | 0.07 | 0.07 mg/l |
| 29 Nov 2024, 11:27 | 0.11 | 0.11 mg/l |
| 22 Oct 2024, 13:11 | 0.034 | 0.034 mg/l |
| 23 Sep 2024, 10:00 | 0.14 | 0.14 mg/l |
| 28 Aug 2024, 12:20 | 0.068 | 0.068 mg/l |
| 18 Jul 2024, 12:04 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.98 mg/l
Sampled 21 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 9.98 | 9.98 mg/l |
| 13 May 2026, 10:12 | 12 | 12 mg/l |
| 14 Apr 2026, 12:36 | 8.77 | 8.77 mg/l |
| 9 Apr 2026, 12:42 | 7.17 | 7.17 mg/l |
| 27 Mar 2026, 08:53 | 8.03 | 8.03 mg/l |
| 9 Mar 2026, 10:42 | 4.68 | 4.68 mg/l |
| 20 Feb 2026, 11:47 | 2.39 | 2.39 mg/l |
| 5 Feb 2026, 09:05 | 1.99 | 1.99 mg/l |
| 20 Jan 2026, 08:47 | 3.27 | 3.27 mg/l |
| 6 Jan 2026, 10:29 | 9.24 | 9.24 mg/l |
| 15 Dec 2025, 11:16 | 5.53 | 5.53 mg/l |
| 2 Dec 2025, 09:15 | 3.32 | 3.32 mg/l |
| 17 Nov 2025, 14:06 | 8.85 | 8.85 mg/l |
| 10 Nov 2025, 09:52 | 12 | 12 mg/l |
| 17 Oct 2025, 09:17 | 19 | 19 mg/l |
| 2 Sep 2025, 09:37 | 15 | 15 mg/l |
| 13 Aug 2025, 10:32 | 10.9 | 10.9 mg/l |
| 8 Jul 2025, 11:36 | 12 | 12 mg/l |
| 4 Jun 2025, 13:05 | 14.8 | 14.8 mg/l |
| 8 May 2025, 08:56 | 13 | 13 mg/l |
| 27 Mar 2025, 08:12 | 7.74 | 7.74 mg/l |
| 18 Mar 2025, 10:09 | 7.41 | 7.41 mg/l |
| 28 Feb 2025, 11:14 | 2.56 | 2.56 mg/l |
| 11 Dec 2024, 12:03 | 2.47 | 2.47 mg/l |
| 29 Nov 2024, 11:27 | 2.17 | 2.17 mg/l |
| 22 Oct 2024, 13:11 | 2.27 | 2.27 mg/l |
| 23 Sep 2024, 10:00 | 2.66 | 2.66 mg/l |
| 28 Aug 2024, 12:20 | 14 | 14 mg/l |
| 18 Jul 2024, 12:04 | 7.17 | 7.17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.052 mg/l
Sampled 21 May 2026, 4 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 0.052 | 0.052 mg/l |
| 13 May 2026, 10:12 | 0.058 | 0.058 mg/l |
| 14 Apr 2026, 12:36 | 0.054 | 0.054 mg/l |
| 9 Apr 2026, 12:42 | 0.049 | 0.049 mg/l |
| 27 Mar 2026, 08:53 | 0.031 | 0.031 mg/l |
| 9 Mar 2026, 10:42 | 0.034 | 0.034 mg/l |
| 20 Feb 2026, 11:47 | 0.032 | 0.032 mg/l |
| 5 Feb 2026, 09:05 | 0.03 | 0.03 mg/l |
| 20 Jan 2026, 08:47 | 0.03 | 0.03 mg/l |
| 6 Jan 2026, 10:29 | 0.021 | 0.021 mg/l |
| 15 Dec 2025, 11:16 | 0.028 | 0.028 mg/l |
| 2 Dec 2025, 09:15 | 0.068 | 0.068 mg/l |
| 17 Nov 2025, 14:06 | 0.034 | 0.034 mg/l |
| 10 Nov 2025, 09:52 | 0.035 | 0.035 mg/l |
| 17 Oct 2025, 09:17 | 0.047 | 0.047 mg/l |
| 2 Sep 2025, 09:37 | 0.051 | 0.051 mg/l |
| 13 Aug 2025, 10:32 | 0.03 | 0.03 mg/l |
| 8 Jul 2025, 11:36 | 0.042 | 0.042 mg/l |
| 4 Jun 2025, 13:05 | 0.042 | 0.042 mg/l |
| 8 May 2025, 08:56 | 0.061 | 0.061 mg/l |
| 27 Mar 2025, 08:12 | 0.031 | 0.031 mg/l |
| 18 Mar 2025, 10:09 | 0.051 | 0.051 mg/l |
| 28 Feb 2025, 11:14 | 0.022 | 0.022 mg/l |
| 11 Dec 2024, 12:03 | 0.022 | 0.022 mg/l |
| 29 Nov 2024, 11:27 | 0.039 | 0.039 mg/l |
| 22 Oct 2024, 13:11 | 0.11 | 0.11 mg/l |
| 23 Sep 2024, 10:00 | 0.093 | 0.093 mg/l |
| 28 Aug 2024, 12:20 | 0.1 | 0.1 mg/l |
| 18 Jul 2024, 12:04 | 0.18 | 0.18 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
533 µS/cm
Sampled 21 May 2026, 4 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 11:00 | 533 | 533 µS/cm |
| 13 May 2026, 10:12 | 551 | 551 µS/cm |
| 14 Apr 2026, 12:36 | 458 | 458 µS/cm |
| 9 Apr 2026, 12:42 | 427 | 427 µS/cm |
| 27 Mar 2026, 08:53 | 425 | 425 µS/cm |
| 9 Mar 2026, 10:42 | 368 | 368 µS/cm |
| 20 Feb 2026, 11:47 | 238 | 238 µS/cm |
| 5 Feb 2026, 09:05 | 228 | 228 µS/cm |
| 20 Jan 2026, 08:47 | 296 | 296 µS/cm |
| 6 Jan 2026, 10:29 | 507 | 507 µS/cm |
| 15 Dec 2025, 11:16 | 398 | 398 µS/cm |
| 2 Dec 2025, 09:15 | 359 | 359 µS/cm |
| 17 Nov 2025, 14:06 | 566 | 566 µS/cm |
| 10 Nov 2025, 09:52 | 611 | 611 µS/cm |
| 17 Oct 2025, 09:17 | 824 | 824 µS/cm |
| 2 Sep 2025, 09:37 | 743 | 743 µS/cm |
| 13 Aug 2025, 10:32 | 792 | 792 µS/cm |
| 8 Jul 2025, 11:36 | 560 | 560 µS/cm |
| 4 Jun 2025, 13:05 | 614 | 614 µS/cm |
| 8 May 2025, 08:56 | 606 | 606 µS/cm |
| 3 Apr 2025, 13:49 | 485 | 485 µS/cm |
| 27 Mar 2025, 08:12 | 448 | 448 µS/cm |
| 18 Mar 2025, 10:09 | 415 | 415 µS/cm |
| 28 Feb 2025, 11:14 | 277 | 277 µS/cm |
| 11 Dec 2024, 12:03 | 263 | 263 µS/cm |
| 29 Nov 2024, 11:27 | 259 | 259 µS/cm |
| 22 Oct 2024, 13:11 | 254 | 254 µS/cm |
| 23 Sep 2024, 10:00 | 273 | 273 µS/cm |
| 28 Aug 2024, 12:20 | 660 | 660 µS/cm |
| 18 Jul 2024, 12:04 | 443 | 443 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 | 30 | Jul 2024 – May 2026 | 86.5% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Jul 2024 – May 2026 | 8.99 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 30 | Jul 2024 – May 2026 | 13.5 °C 21 May 2026 |
| pH 0061 | River water | 30 | Jul 2024 – May 2026 | 7.48 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Jul 2024 – May 2026 | 0.042 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 29 | Jul 2024 – May 2026 | 9.98 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Jul 2024 – May 2026 | 0.052 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Jul 2024 – May 2026 | 533 µS/cm 21 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Oct 2023 – Feb 2024 | below 0.001 µg/l 6 Feb 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | Oct 2023 – Feb 2025 | below 0.004 µg/l 28 Feb 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | Oct 2023 – Feb 2025 | below 0.005 µg/l 28 Feb 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Jul 2024 – May 2026 | 77 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Jul 2024 – May 2026 | 0.0003 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Jul 2024 – May 2026 | 1.4 mg/l 21 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| Nitrite as N 0118 | River water | 29 | Jul 2024 – May 2026 | 0.017 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Jul 2024 – May 2026 | 10 mg/l 21 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | Oct 2023 – Feb 2025 | below 0.005 µg/l 28 Feb 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | Oct 2023 – Feb 2025 | 0.00051 µg/l 28 Feb 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | Oct 2023 – Feb 2025 | 0.00059 µg/l 28 Feb 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | Oct 2023 – Feb 2025 | below 0.0005 µg/l 28 Feb 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | Oct 2023 – Feb 2025 | below 0.001 µg/l 28 Feb 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | Oct 2023 – Feb 2025 | below 0.006 µg/l 28 Feb 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | Oct 2023 – Feb 2025 | below 0.005 µg/l 28 Feb 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | Oct 2023 – Feb 2025 | below 0.004 µg/l 28 Feb 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | Oct 2023 – Feb 2025 | below 0.002 µg/l 28 Feb 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.