Hazon Burn at confluence with Coquet
EA name: HAZON BURN AT CONFLUENCE WITH COQUET (also listed as “HAZON BURN AT CONFLUENCE WITH RIVER COQUET”)
Environment Agency sampling point NE-42300087 · 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
- 5 May 2026, 13:105 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
- 27 since 5 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 420290, 602965As published, to the nearest 1 m. Open in a map
- River, by its own name
- Hazon Burn
- River, by the map
- Hazon BurnPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Warkworth On the River Coquet · 12 km along the river
- Why it was sampled
- Monitoring (national agency policy) (27 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
103%
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 103 | 103% |
| 8 Apr 2026, 09:00 | 104 | 104% |
| 3 Mar 2026, 12:08 | 100.4 | 100.4% |
| 2 Feb 2026, 09:43 | 97.9 | 97.9% |
| 8 Jan 2026, 12:00 | 101 | 101% |
| 1 Dec 2025, 12:02 | 101.7 | 101.7% |
| 5 Nov 2025, 11:28 | 96.6 | 96.6% |
| 6 Oct 2025, 08:47 | 96.4 | 96.4% |
| 5 Sep 2025, 09:17 | 96.4 | 96.4% |
| 29 Aug 2025, 10:33 | 99.5 | 99.5% |
| 5 Aug 2025, 11:11 | 99.5 | 99.5% |
| 14 Jul 2025, 10:01 | 96.3 | 96.3% |
| 5 Jun 2025, 08:51 | 98.1 | 98.1% |
| 8 May 2025, 11:30 | 100.5 | 100.5% |
| 3 Apr 2025, 11:42 | 106.7 | 106.7% |
| 3 Mar 2025, 10:52 | 103.5 | 103.5% |
| 3 Feb 2025, 11:12 | 102.7 | 102.7% |
| 20 Jan 2025, 11:36 | 101.9 | 101.9% |
| 5 Dec 2024, 09:38 | 100.4 | 100.4% |
| 21 Nov 2024, 10:14 | 99.8 | 99.8% |
| 14 Oct 2024, 10:17 | 99.4 | 99.4% |
| 19 Sep 2024, 12:05 | 100.5 | 100.5% |
| 21 Aug 2024, 12:00 | 109.9 | 109.9% |
| 16 Jul 2024, 11:10 | 101 | 101% |
| 19 Jun 2024, 10:03 | 102.8 | 102.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.6 mg/l
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 11.6 | 11.6 mg/l |
| 8 Apr 2026, 09:00 | 12.1 | 12.1 mg/l |
| 3 Mar 2026, 12:08 | 12.3 | 12.3 mg/l |
| 2 Feb 2026, 09:43 | 12.4 | 12.4 mg/l |
| 8 Jan 2026, 12:00 | 14.1 | 14.1 mg/l |
| 1 Dec 2025, 12:02 | 12.4 | 12.4 mg/l |
| 5 Nov 2025, 11:28 | 10.6 | 10.6 mg/l |
| 6 Oct 2025, 08:47 | 10.6 | 10.6 mg/l |
| 5 Sep 2025, 09:17 | 10.4 | 10.4 mg/l |
| 29 Aug 2025, 10:33 | 10.4 | 10.4 mg/l |
| 5 Aug 2025, 11:11 | 10.4 | 10.4 mg/l |
| 14 Jul 2025, 10:01 | 9.46 | 9.46 mg/l |
| 5 Jun 2025, 08:51 | 10.8 | 10.8 mg/l |
| 8 May 2025, 11:30 | 11.5 | 11.5 mg/l |
| 3 Apr 2025, 11:42 | 12.7 | 12.7 mg/l |
| 3 Mar 2025, 10:52 | 12.6 | 12.6 mg/l |
| 3 Feb 2025, 11:12 | 13.1 | 13.1 mg/l |
| 20 Jan 2025, 11:36 | 13.3 | 13.3 mg/l |
| 5 Dec 2024, 09:38 | 12.1 | 12.1 mg/l |
| 21 Nov 2024, 10:14 | 14.1 | 14.1 mg/l |
| 14 Oct 2024, 10:17 | 12.3 | 12.3 mg/l |
| 19 Sep 2024, 12:05 | 11 | 11 mg/l |
| 21 Aug 2024, 12:00 | 11.6 | 11.6 mg/l |
| 16 Jul 2024, 11:10 | 10.4 | 10.4 mg/l |
| 19 Jun 2024, 10:03 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
10.1 °C
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 10.1 | 10.1 °C |
| 8 Apr 2026, 09:00 | 8.5 | 8.5 °C |
| 3 Mar 2026, 12:08 | 6.5 | 6.5 °C |
| 2 Feb 2026, 09:43 | 5.4 | 5.4 °C |
| 8 Jan 2026, 12:00 | 1.5 | 1.5 °C |
| 1 Dec 2025, 12:02 | 6.9 | 6.9 °C |
| 5 Nov 2025, 11:28 | 11.2 | 11.2 °C |
| 6 Oct 2025, 08:47 | 11 | 11 °C |
| 5 Sep 2025, 09:17 | 11.8 | 11.8 °C |
| 29 Aug 2025, 10:33 | 13.2 | 13.2 °C |
| 5 Aug 2025, 11:11 | 13.1 | 13.1 °C |
| 14 Jul 2025, 10:01 | 16.1 | 16.1 °C |
| 5 Jun 2025, 08:51 | 10.9 | 10.9 °C |
| 8 May 2025, 11:30 | 9.2 | 9.2 °C |
| 3 Apr 2025, 11:42 | 7.7 | 7.7 °C |
| 3 Mar 2025, 10:52 | 6.8 | 6.8 °C |
| 3 Feb 2025, 11:12 | 5.1 | 5.1 °C |
| 20 Jan 2025, 11:36 | 4.2 | 4.2 °C |
| 5 Dec 2024, 09:38 | 7.1 | 7.1 °C |
| 21 Nov 2024, 10:14 | 1.1 | 1.1 °C |
| 14 Oct 2024, 10:17 | 6.1 | 6.1 °C |
| 19 Sep 2024, 12:05 | 11.4 | 11.4 °C |
| 21 Aug 2024, 12:00 | 12.8 | 12.8 °C |
| 16 Jul 2024, 11:10 | 14 | 14 °C |
| 19 Jun 2024, 10:03 | 12.4 | 12.4 °C |
pH
code 0061
8.61
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 8.61 | 8.61 |
| 8 Apr 2026, 09:00 | 8.47 | 8.47 |
| 3 Mar 2026, 12:08 | 8.49 | 8.49 |
| 2 Feb 2026, 09:43 | 8.11 | 8.11 |
| 8 Jan 2026, 12:00 | 8.19 | 8.19 |
| 1 Dec 2025, 12:02 | 7.98 | 7.98 |
| 5 Nov 2025, 11:28 | 8.17 | 8.17 |
| 6 Oct 2025, 08:47 | 8.44 | 8.44 |
| 5 Sep 2025, 09:17 | 8.61 | 8.61 |
| 29 Aug 2025, 10:33 | 8.6 | 8.6 |
| 5 Aug 2025, 11:11 | 8.3 | 8.3 |
| 14 Jul 2025, 10:01 | 8.44 | 8.44 |
| 5 Jun 2025, 08:51 | 8.55 | 8.55 |
| 8 May 2025, 11:30 | 8.47 | 8.47 |
| 3 Apr 2025, 11:42 | 8.64 | 8.64 |
| 3 Mar 2025, 10:52 | 8.47 | 8.47 |
| 3 Feb 2025, 11:12 | 8.43 | 8.43 |
| 20 Jan 2025, 11:36 | 8.55 | 8.55 |
| 5 Dec 2024, 09:38 | 8.12 | 8.12 |
| 21 Nov 2024, 10:14 | 8.52 | 8.52 |
| 14 Oct 2024, 10:17 | 8.18 | 8.18 |
| 19 Sep 2024, 12:05 | 8.36 | 8.36 |
| 21 Aug 2024, 12:00 | 8.41 | 8.41 |
| 16 Jul 2024, 11:10 | 8.42 | 8.42 |
| 19 Jun 2024, 10:03 | 8.53 | 8.53 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Apr 2026, 09:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2026, 12:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2026, 09:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 12:00 | 0.047 | 0.047 mg/l |
| 1 Dec 2025, 12:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Nov 2025, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Oct 2025, 08:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Sep 2025, 09:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Aug 2025, 10:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jul 2025, 10:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jun 2025, 08:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2025, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Apr 2025, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2025, 11:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2025, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Dec 2024, 09:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Nov 2024, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2024, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Sep 2024, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 12:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2024, 11:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2024, 10:03 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.746 mg/l
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 0.746 | 0.746 mg/l |
| 8 Apr 2026, 09:00 | 0.706 | 0.706 mg/l |
| 3 Mar 2026, 12:08 | 1.4 | 1.4 mg/l |
| 2 Feb 2026, 09:43 | 1.8 | 1.8 mg/l |
| 8 Jan 2026, 12:00 | 1.3 | 1.3 mg/l |
| 1 Dec 2025, 12:02 | 1.8 | 1.8 mg/l |
| 5 Nov 2025, 11:28 | 5.69 | 5.69 mg/l |
| 6 Oct 2025, 08:47 | 1.5 | 1.5 mg/l |
| 5 Sep 2025, 09:17 | 0.406 | 0.406 mg/l |
| 29 Aug 2025, 10:33 | 0.386 | 0.386 mg/l |
| 5 Aug 2025, 11:11 | 0.376 | 0.376 mg/l |
| 14 Jul 2025, 10:01 | 0.376 | 0.376 mg/l |
| 5 Jun 2025, 08:51 | 0.426 | 0.426 mg/l |
| 8 May 2025, 11:30 | 0.396 | 0.396 mg/l |
| 3 Apr 2025, 11:42 | 0.626 | 0.626 mg/l |
| 3 Mar 2025, 10:52 | 0.966 | 0.966 mg/l |
| 3 Feb 2025, 11:12 | 1.3 | 1.3 mg/l |
| 20 Jan 2025, 11:36 | 1.4 | 1.4 mg/l |
| 5 Dec 2024, 09:38 | 1.79 | 1.79 mg/l |
| 21 Nov 2024, 10:14 | 0.986 | 0.986 mg/l |
| 14 Oct 2024, 10:17 | 1.8 | 1.8 mg/l |
| 19 Sep 2024, 12:05 | 0.606 | 0.606 mg/l |
| 21 Aug 2024, 12:00 | 0.596 | 0.596 mg/l |
| 16 Jul 2024, 11:10 | 1.3 | 1.3 mg/l |
| 19 Jun 2024, 10:03 | 0.866 | 0.866 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 Apr 2026, 09:00 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Mar 2026, 12:08 | 0.016 | 0.016 mg/l |
| 2 Feb 2026, 09:43 | 0.023 | 0.023 mg/l |
| 8 Jan 2026, 12:00 | 0.027 | 0.027 mg/l |
| 1 Dec 2025, 12:02 | 0.036 | 0.036 mg/l |
| 5 Nov 2025, 11:28 | 0.025 | 0.025 mg/l |
| 6 Oct 2025, 08:47 | 0.019 | 0.019 mg/l |
| 5 Sep 2025, 09:17 | <0.01 | below 0.01 mg/l (not detected above this) |
| 29 Aug 2025, 10:33 | <0.01 | below 0.01 mg/l (not detected above this) |
| 5 Aug 2025, 11:11 | 0.01 | 0.01 mg/l |
| 14 Jul 2025, 10:01 | 0.014 | 0.014 mg/l |
| 5 Jun 2025, 08:51 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 May 2025, 11:30 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Apr 2025, 11:42 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Mar 2025, 10:52 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Feb 2025, 11:12 | 0.014 | 0.014 mg/l |
| 20 Jan 2025, 11:36 | 0.018 | 0.018 mg/l |
| 5 Dec 2024, 09:38 | 0.039 | 0.039 mg/l |
| 21 Nov 2024, 10:14 | <0.01 | below 0.01 mg/l (not detected above this) |
| 14 Oct 2024, 10:17 | 0.03 | 0.03 mg/l |
| 19 Sep 2024, 12:05 | 0.015 | 0.015 mg/l |
| 21 Aug 2024, 12:00 | <0.01 | below 0.01 mg/l (not detected above this) |
| 16 Jul 2024, 11:10 | 0.014 | 0.014 mg/l |
| 19 Jun 2024, 10:03 | 0.012 | 0.012 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1292 µS/cm
Sampled 5 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 May 2026, 13:10 | 1292 | 1292 µS/cm |
| 8 Apr 2026, 09:00 | 1223 | 1223 µS/cm |
| 3 Mar 2026, 12:08 | 1042 | 1042 µS/cm |
| 2 Feb 2026, 09:43 | 455 | 455 µS/cm |
| 8 Jan 2026, 12:00 | 572 | 572 µS/cm |
| 1 Dec 2025, 12:02 | 380 | 380 µS/cm |
| 5 Nov 2025, 11:28 | 529 | 529 µS/cm |
| 6 Oct 2025, 08:47 | 1096 | 1096 µS/cm |
| 5 Sep 2025, 09:17 | 1396 | 1396 µS/cm |
| 29 Aug 2025, 10:33 | 1469 | 1469 µS/cm |
| 5 Aug 2025, 11:11 | 1458 | 1458 µS/cm |
| 14 Jul 2025, 10:01 | 1507 | 1507 µS/cm |
| 5 Jun 2025, 08:51 | 1692 | 1692 µS/cm |
| 8 May 2025, 11:30 | 1498 | 1498 µS/cm |
| 3 Apr 2025, 11:42 | 1416 | 1416 µS/cm |
| 3 Mar 2025, 10:52 | 1061 | 1061 µS/cm |
| 3 Feb 2025, 11:12 | 1035 | 1035 µS/cm |
| 20 Jan 2025, 11:36 | 974 | 974 µS/cm |
| 5 Dec 2024, 09:38 | 437 | 437 µS/cm |
| 21 Nov 2024, 10:14 | 1282 | 1282 µS/cm |
| 14 Oct 2024, 10:17 | 566 | 566 µS/cm |
| 19 Sep 2024, 12:05 | 1455 | 1455 µS/cm |
| 21 Aug 2024, 12:00 | 1512 | 1512 µS/cm |
| 16 Jul 2024, 11:10 | 1064 | 1064 µS/cm |
| 19 Jun 2024, 10:03 | 1425 | 1425 µS/cm |
Everything measured here
74 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 74 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 25 | Jun 2024 – May 2026 | 103% 5 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Jun 2024 – May 2026 | 11.6 mg/l 5 May 2026 |
| Temperature of Water 0076 | River water | 25 | Jun 2024 – May 2026 | 10.1 °C 5 May 2026 |
| pH 0061 | River water | 25 | Jun 2024 – May 2026 | 8.61 5 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 25 | Jun 2024 – May 2026 | below 0.03 mg/l 5 May 2026 |
| Nitrate as N 0117 | River water | 25 | Jun 2024 – May 2026 | 0.746 mg/l 5 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 25 | Jun 2024 – May 2026 | below 0.01 mg/l 5 May 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Jun 2024 – May 2026 | 1292 µS/cm 5 May 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Dec 2025 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 4 | Oct 2023 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Dec 2025 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 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 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Dec 2025 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Dec 2025 – Dec 2025 | below 0.01 µg/l 1 Dec 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 25 | Jun 2024 – May 2026 | 270 mg/l 5 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 25 | Jun 2024 – May 2026 | below 0.00055 mg/l 5 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | 2.1 mg/l 5 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 4 | Oct 2023 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 4 | Oct 2023 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Nitrite as N 0118 | River water | 25 | Jun 2024 – May 2026 | below 0.004 mg/l 5 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 25 | Jun 2024 – May 2026 | 0.75 mg/l 5 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorobutanoic acid 2995 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorodecanoic acid 8892 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 4 | Oct 2023 – Dec 2025 | below 0.005 µg/l 1 Dec 2025 |
| Perfluorododecanoic acid 8894 | River water | 4 | Oct 2023 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoroheptanoic acid 8889 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorohexanoic acid 8888 | River water | 4 | Oct 2023 – Dec 2025 | 0.00074 µg/l 1 Dec 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorononanoic acid 8891 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 4 | Oct 2023 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Dec 2025 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorooctanoic acid 8890 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 4 | Oct 2023 – Dec 2025 | below 0.0005 µg/l 1 Dec 2025 |
| Perfluoropentanoic acid 8887 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 Dec 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 4 | Oct 2023 – Dec 2025 | below 0.006 µg/l 1 Dec 2025 |
| Perfluorotridecanoic acid 2955 | River water | 4 | Oct 2023 – Dec 2025 | below 0.002 µg/l 1 Dec 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 4 | Oct 2023 – Dec 2025 | below 0.004 µg/l 1 Dec 2025 |
| Perfluoroundecanoic acid 8893 | River water | 4 | Oct 2023 – Dec 2025 | below 0.001 µg/l 1 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.