Ingrebourne at A12 Bridge
EA name: INGREBOURNE AT A12 BRIDGE
Environment Agency sampling point TH-PRGR0017 · 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
- 6 Aug 2026, 13:0256 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 29 since 8 Apr 2024 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 556467, 192158As published, to the nearest 1 m. Open in a map
- River, by its own name
- Ingrebourne
- River, by the map
- Ingrebourne RiverPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Harold Park On the River Ingrebourne · 1.2 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Monitoring (national agency policy) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.8%
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 96.8 | 96.8% |
| 23 Jul 2026, 11:55 | 90.3 | 90.3% |
| 12 Jun 2026, 11:06 | 93.6 | 93.6% |
| 18 May 2026, 12:01 | 98.1 | 98.1% |
| 23 Apr 2026, 11:37 | 99.4 | 99.4% |
| 11 Mar 2026, 11:43 | 119.5 | 119.5% |
| 4 Feb 2026, 09:19 | 96.4 | 96.4% |
| 16 Jan 2026, 09:26 | 96.6 | 96.6% |
| 4 Dec 2025, 11:20 | 90.2 | 90.2% |
| 13 Nov 2025, 13:12 | 91.2 | 91.2% |
| 23 Oct 2025, 10:23 | 87.8 | 87.8% |
| 29 Sep 2025, 12:20 | 91.9 | 91.9% |
| 26 Aug 2025, 14:15 | 99.5 | 99.5% |
| 29 Jul 2025, 12:50 | 97.5 | 97.5% |
| 16 Jun 2025, 12:02 | 167.8 | 167.8% |
| 13 May 2025, 10:22 | 91.5 | 91.5% |
| 24 Apr 2025, 13:32 | 94.5 | 94.5% |
| 19 Mar 2025, 09:45 | 99.6 | 99.6% |
| 21 Feb 2025, 11:24 | 96.6 | 96.6% |
| 27 Jan 2025, 11:02 | 98.1 | 98.1% |
| 12 Dec 2024, 10:42 | 92.5 | 92.5% |
| 26 Nov 2024, 10:40 | 89.9 | 89.9% |
| 22 Oct 2024, 11:09 | 90.6 | 90.6% |
| 20 Sep 2024, 11:50 | 98 | 98% |
| 27 Aug 2024, 11:18 | 94.1 | 94.1% |
| 3 Jul 2024, 11:13 | 107 | 107% |
| 18 Jun 2024, 09:46 | 96.3 | 96.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.23 mg/l
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 9.23 | 9.23 mg/l |
| 23 Jul 2026, 11:55 | 8.31 | 8.31 mg/l |
| 12 Jun 2026, 11:06 | 9.35 | 9.35 mg/l |
| 18 May 2026, 12:01 | 10.4 | 10.4 mg/l |
| 23 Apr 2026, 11:37 | 10.2 | 10.2 mg/l |
| 11 Mar 2026, 11:43 | 13.4 | 13.4 mg/l |
| 4 Feb 2026, 09:19 | 11.8 | 11.8 mg/l |
| 16 Jan 2026, 09:26 | 12 | 12 mg/l |
| 4 Dec 2025, 11:20 | 10.7 | 10.7 mg/l |
| 13 Nov 2025, 13:12 | 9.54 | 9.54 mg/l |
| 23 Oct 2025, 10:23 | 9.48 | 9.48 mg/l |
| 29 Sep 2025, 12:20 | 9.81 | 9.81 mg/l |
| 26 Aug 2025, 14:15 | 9.21 | 9.21 mg/l |
| 29 Jul 2025, 12:50 | 9.28 | 9.28 mg/l |
| 16 Jun 2025, 12:02 | 15.3 | 15.3 mg/l |
| 13 May 2025, 10:22 | 9.2 | 9.2 mg/l |
| 24 Apr 2025, 13:32 | 10.1 | 10.1 mg/l |
| 19 Mar 2025, 09:45 | 12.6 | 12.6 mg/l |
| 21 Feb 2025, 11:24 | 10.9 | 10.9 mg/l |
| 27 Jan 2025, 11:02 | 12.2 | 12.2 mg/l |
| 12 Dec 2024, 10:42 | 11.1 | 11.1 mg/l |
| 26 Nov 2024, 10:40 | 10.8 | 10.8 mg/l |
| 22 Oct 2024, 11:09 | 9.76 | 9.76 mg/l |
| 20 Sep 2024, 11:50 | 9.51 | 9.51 mg/l |
| 27 Aug 2024, 11:18 | 8.6 | 8.6 mg/l |
| 3 Jul 2024, 11:13 | 10.7 | 10.7 mg/l |
| 18 Jun 2024, 09:46 | 9.81 | 9.81 mg/l |
Water temperature
code 0076 · °C
17.5 °C
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 17.5 | 17.5 °C |
| 23 Jul 2026, 11:55 | 19.3 | 19.3 °C |
| 12 Jun 2026, 11:06 | 15.3 | 15.3 °C |
| 18 May 2026, 12:01 | 12.7 | 12.7 °C |
| 23 Apr 2026, 11:37 | 14.3 | 14.3 °C |
| 11 Mar 2026, 11:43 | 10.3 | 10.3 °C |
| 4 Feb 2026, 09:19 | 6.5 | 6.5 °C |
| 16 Jan 2026, 09:26 | 5.9 | 5.9 °C |
| 4 Dec 2025, 11:20 | 8 | 8 °C |
| 13 Nov 2025, 13:12 | 13.2 | 13.2 °C |
| 23 Oct 2025, 10:23 | 11.8 | 11.8 °C |
| 29 Sep 2025, 12:20 | 12.3 | 12.3 °C |
| 26 Aug 2025, 14:15 | 19 | 19 °C |
| 29 Jul 2025, 12:50 | 17.6 | 17.6 °C |
| 16 Jun 2025, 12:02 | 19.8 | 19.8 °C |
| 13 May 2025, 10:22 | 15 | 15 °C |
| 24 Apr 2025, 13:32 | 12.3 | 12.3 °C |
| 19 Mar 2025, 09:45 | 5.2 | 5.2 °C |
| 21 Feb 2025, 11:24 | 9.8 | 9.8 °C |
| 27 Jan 2025, 11:02 | 6.1 | 6.1 °C |
| 12 Dec 2024, 10:42 | 7.4 | 7.4 °C |
| 26 Nov 2024, 10:40 | 7.4 | 7.4 °C |
| 22 Oct 2024, 11:09 | 11.9 | 11.9 °C |
| 20 Sep 2024, 11:50 | 16.7 | 16.7 °C |
| 27 Aug 2024, 11:18 | 19.6 | 19.6 °C |
| 3 Jul 2024, 11:13 | 15.2 | 15.2 °C |
| 18 Jun 2024, 09:46 | 14.4 | 14.4 °C |
pH
code 0061
7.93
Sampled 6 Aug 2026, 56 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 7.93 | 7.93 |
| 23 Jul 2026, 11:55 | 7.94 | 7.94 |
| 12 Jun 2026, 11:06 | 7.88 | 7.88 |
| 18 May 2026, 12:01 | 8.32 | 8.32 |
| 23 Apr 2026, 11:37 | 7.5 | 7.5 |
| 11 Mar 2026, 11:43 | 8.55 | 8.55 |
| 4 Feb 2026, 09:19 | 7.99 | 7.99 |
| 16 Jan 2026, 09:26 | 7.94 | 7.94 |
| 4 Dec 2025, 11:20 | 7.92 | 7.92 |
| 13 Nov 2025, 13:12 | 7.94 | 7.94 |
| 23 Oct 2025, 10:23 | 7.87 | 7.87 |
| 29 Sep 2025, 12:20 | 7.92 | 7.92 |
| 26 Aug 2025, 14:15 | 8.16 | 8.16 |
| 29 Jul 2025, 12:50 | 8.14 | 8.14 |
| 16 Jun 2025, 12:02 | 9.03 | 9.03 |
| 13 May 2025, 10:22 | 7.93 | 7.93 |
| 24 Apr 2025, 13:32 | 7.84 | 7.84 |
| 19 Mar 2025, 09:45 | 8.21 | 8.21 |
| 21 Feb 2025, 11:24 | 8.16 | 8.16 |
| 27 Jan 2025, 11:02 | 8.12 | 8.12 |
| 12 Dec 2024, 10:42 | 7.99 | 7.99 |
| 26 Nov 2024, 10:40 | 7.92 | 7.92 |
| 22 Oct 2024, 11:09 | 7.96 | 7.96 |
| 20 Sep 2024, 11:50 | 7.76 | 7.76 |
| 27 Aug 2024, 11:18 | 7.51 | 7.51 |
| 3 Jul 2024, 11:13 | 8.31 | 8.31 |
| 18 Jun 2024, 09:46 | 8.32 | 8.32 |
| 1 May 2024, 09:16 | 8.07 | 8.07 |
| 8 Apr 2024, 12:03 | 8.4 | 8.4 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.1 mg/l
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 0.1 | 0.1 mg/l |
| 23 Jul 2026, 11:55 | 0.15 | 0.15 mg/l |
| 12 Jun 2026, 11:06 | 0.082 | 0.082 mg/l |
| 18 May 2026, 12:01 | 0.083 | 0.083 mg/l |
| 23 Apr 2026, 11:37 | 0.21 | 0.21 mg/l |
| 11 Mar 2026, 11:43 | 0.036 | 0.036 mg/l |
| 4 Feb 2026, 09:19 | 0.047 | 0.047 mg/l |
| 16 Jan 2026, 09:26 | 0.089 | 0.089 mg/l |
| 4 Dec 2025, 11:20 | 0.03 | 0.03 mg/l |
| 13 Nov 2025, 13:12 | 0.063 | 0.063 mg/l |
| 23 Oct 2025, 10:23 | 0.091 | 0.091 mg/l |
| 29 Sep 2025, 12:20 | 0.33 | 0.33 mg/l |
| 26 Aug 2025, 14:15 | 0.066 | 0.066 mg/l |
| 29 Jul 2025, 12:50 | 0.088 | 0.088 mg/l |
| 16 Jun 2025, 12:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2025, 10:22 | 0.11 | 0.11 mg/l |
| 24 Apr 2025, 13:32 | 0.071 | 0.071 mg/l |
| 19 Mar 2025, 09:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Feb 2025, 11:24 | 0.24 | 0.24 mg/l |
| 27 Jan 2025, 11:02 | 0.066 | 0.066 mg/l |
| 12 Dec 2024, 10:42 | 0.055 | 0.055 mg/l |
| 26 Nov 2024, 10:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Oct 2024, 11:09 | 0.046 | 0.046 mg/l |
| 20 Sep 2024, 11:50 | 0.076 | 0.076 mg/l |
| 27 Aug 2024, 11:18 | 0.14 | 0.14 mg/l |
| 3 Jul 2024, 11:13 | 0.038 | 0.038 mg/l |
| 18 Jun 2024, 09:46 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.94 mg/l
Sampled 23 Jul 2026, 2 months ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 23 Jul 2026, 11:55 | 2.94 | 2.94 mg/l |
| 12 Jun 2026, 11:06 | 1.77 | 1.77 mg/l |
| 18 May 2026, 12:01 | 2.67 | 2.67 mg/l |
| 23 Apr 2026, 11:37 | 25.9 | 25.9 mg/l |
| 11 Mar 2026, 11:43 | 2.67 | 2.67 mg/l |
| 4 Feb 2026, 09:19 | 5.58 | 5.58 mg/l |
| 16 Jan 2026, 09:26 | 7.18 | 7.18 mg/l |
| 4 Dec 2025, 11:20 | 5.27 | 5.27 mg/l |
| 13 Nov 2025, 13:12 | 2.57 | 2.57 mg/l |
| 23 Oct 2025, 10:23 | 2.75 | 2.75 mg/l |
| 29 Sep 2025, 12:20 | 3.48 | 3.48 mg/l |
| 26 Aug 2025, 14:15 | 2.28 | 2.28 mg/l |
| 29 Jul 2025, 12:50 | 3.03 | 3.03 mg/l |
| 16 Jun 2025, 12:02 | 3.25 | 3.25 mg/l |
| 13 May 2025, 10:22 | 3.27 | 3.27 mg/l |
| 24 Apr 2025, 13:32 | 2.17 | 2.17 mg/l |
| 19 Mar 2025, 09:45 | 2.79 | 2.79 mg/l |
| 21 Feb 2025, 11:24 | 3.85 | 3.85 mg/l |
| 27 Jan 2025, 11:02 | 6.98 | 6.98 mg/l |
| 12 Dec 2024, 10:42 | 5.66 | 5.66 mg/l |
| 26 Nov 2024, 10:40 | 9.57 | 9.57 mg/l |
| 22 Oct 2024, 11:09 | 6.07 | 6.07 mg/l |
| 20 Sep 2024, 11:50 | 4.06 | 4.06 mg/l |
| 27 Aug 2024, 11:18 | 25.9 | 25.9 mg/l |
| 3 Jul 2024, 11:13 | 3.55 | 3.55 mg/l |
| 18 Jun 2024, 09:46 | 2.95 | 2.95 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.35 mg/l
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 0.35 | 0.35 mg/l |
| 23 Jul 2026, 11:55 | 0.33 | 0.33 mg/l |
| 12 Jun 2026, 11:06 | 0.17 | 0.17 mg/l |
| 18 May 2026, 12:01 | 0.17 | 0.17 mg/l |
| 23 Apr 2026, 11:37 | 0.39 | 0.39 mg/l |
| 11 Mar 2026, 11:43 | 0.11 | 0.11 mg/l |
| 4 Feb 2026, 09:19 | 0.11 | 0.11 mg/l |
| 16 Jan 2026, 09:26 | 0.12 | 0.12 mg/l |
| 4 Dec 2025, 11:20 | 0.12 | 0.12 mg/l |
| 13 Nov 2025, 13:12 | 0.22 | 0.22 mg/l |
| 23 Oct 2025, 10:23 | 0.14 | 0.14 mg/l |
| 29 Sep 2025, 12:20 | 0.38 | 0.38 mg/l |
| 26 Aug 2025, 14:15 | 0.47 | 0.47 mg/l |
| 29 Jul 2025, 12:50 | 0.35 | 0.35 mg/l |
| 16 Jun 2025, 12:02 | 0.26 | 0.26 mg/l |
| 13 May 2025, 10:22 | 0.2 | 0.2 mg/l |
| 24 Apr 2025, 13:32 | 0.11 | 0.11 mg/l |
| 19 Mar 2025, 09:45 | 0.083 | 0.083 mg/l |
| 21 Feb 2025, 11:24 | 0.088 | 0.088 mg/l |
| 27 Jan 2025, 11:02 | 0.085 | 0.085 mg/l |
| 12 Dec 2024, 10:42 | 0.09 | 0.09 mg/l |
| 26 Nov 2024, 10:40 | 0.1 | 0.1 mg/l |
| 22 Oct 2024, 11:09 | 0.21 | 0.21 mg/l |
| 20 Sep 2024, 11:50 | 0.33 | 0.33 mg/l |
| 27 Aug 2024, 11:18 | 1 | 1 mg/l |
| 3 Jul 2024, 11:13 | 0.17 | 0.17 mg/l |
| 18 Jun 2024, 09:46 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
942 µS/cm
Sampled 6 Aug 2026, 56 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 13:02 | 942 | 942 µS/cm |
| 23 Jul 2026, 11:55 | 885 | 885 µS/cm |
| 12 Jun 2026, 11:06 | 861 | 861 µS/cm |
| 18 May 2026, 12:01 | 861 | 861 µS/cm |
| 23 Apr 2026, 11:37 | 1076 | 1076 µS/cm |
| 11 Mar 2026, 11:43 | 765 | 765 µS/cm |
| 4 Feb 2026, 09:19 | 660 | 660 µS/cm |
| 16 Jan 2026, 09:26 | 689 | 689 µS/cm |
| 4 Dec 2025, 11:20 | 956 | 956 µS/cm |
| 13 Nov 2025, 13:12 | 977 | 977 µS/cm |
| 23 Oct 2025, 10:23 | 601 | 601 µS/cm |
| 29 Sep 2025, 12:20 | 803 | 803 µS/cm |
| 26 Aug 2025, 14:15 | 798 | 798 µS/cm |
| 29 Jul 2025, 12:50 | 875 | 875 µS/cm |
| 16 Jun 2025, 12:02 | 833 | 833 µS/cm |
| 13 May 2025, 10:22 | 896 | 896 µS/cm |
| 24 Apr 2025, 13:32 | 957 | 957 µS/cm |
| 19 Mar 2025, 09:45 | 897 | 897 µS/cm |
| 21 Feb 2025, 11:24 | 1008 | 1008 µS/cm |
| 27 Jan 2025, 11:02 | 699 | 699 µS/cm |
| 12 Dec 2024, 10:42 | 804 | 804 µS/cm |
| 26 Nov 2024, 10:40 | 892 | 892 µS/cm |
| 22 Oct 2024, 11:09 | 793 | 793 µS/cm |
| 20 Sep 2024, 11:50 | 827 | 827 µS/cm |
| 27 Aug 2024, 11:18 | 990 | 990 µS/cm |
| 3 Jul 2024, 11:13 | 795 | 795 µS/cm |
| 18 Jun 2024, 09:46 | 821 | 821 µS/cm |
Everything measured here
40 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 40 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Aug 2026 | 96.8% 6 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Aug 2026 | 9.23 mg/l 6 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 17.5 °C 6 Aug 2026 |
| pH 0061 | River water | 29 | Apr 2024 – Aug 2026 | 7.93 6 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Aug 2026 | 0.1 mg/l 6 Aug 2026 |
| Nitrate as N 0117 | River water | 26 | Jun 2024 – Jul 2026 | 2.94 mg/l 23 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jun 2024 – Aug 2026 | 0.35 mg/l 6 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 942 µS/cm 6 Aug 2026 |
| Acenaphthene 7395 | River water | 24 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Acenaphthylene 8311 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Aug 2026 | 110 mg/l 6 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Aug 2026 | 0.00269 mg/l 6 Aug 2026 |
| Anthracene 6753 | River water | 24 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(a)Anthracene 0772 | River water | 22 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(a)Pyrene 6399 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(b)Fluoranthene 0731 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(e)Pyrene 8940 | River water | 24 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(g,h,i)Perylene 0714 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Benzo(k)Fluoranthene 0733 | River water | 23 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | below 1 mg/l 18 May 2026 |
| Cadmium, Dissolved 0106 | River water | 29 | Apr 2024 – Aug 2026 | below 0.01 µg/l 6 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 29 | Apr 2024 – Aug 2026 | 81 mg/l 6 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 29 | Apr 2024 – Aug 2026 | 4.5 mg/l 6 Aug 2026 |
| Chrysene 8310 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Copper : BLM Bioavailable 4821 | River water | 29 | Apr 2024 – Aug 2026 | 0.09 µg/l 6 Aug 2026 |
| Copper, Dissolved 6450 | River water | 29 | Apr 2024 – Aug 2026 | 1.3 µg/l 6 Aug 2026 |
| Dibenzo(a,h)Anthracene 8360 | River water | 24 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Fluoranthene 0736 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Fluorene 7864 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 24 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Lead, Dissolved 0052 | River water | 29 | Apr 2024 – Aug 2026 | 0.2 µg/l 6 Aug 2026 |
| Naphthalene 9669 | River water | 23 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Nickel, Dissolved 3410 | River water | 29 | Apr 2024 – Aug 2026 | 3.8 µg/l 6 Aug 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Aug 2026 | 0.016 mg/l 6 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Jun 2024 – Jul 2026 | 3 mg/l 23 Jul 2026 |
| Perylene 9003 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Phenanthrene 9671 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Pyrene 7325 | River water | 25 | Apr 2024 – Aug 2026 | below 0.05 µg/l 6 Aug 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 29 | Apr 2024 – Aug 2026 | 1 µg/l 6 Aug 2026 |
| Zinc, Dissolved 3408 | River water | 29 | Apr 2024 – Aug 2026 | 2.5 µg/l 6 Aug 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.