Tadnoll downstream of Broadmayne sewage treatment works
EA name: TADNOLL D/S BROADMAYNE STW (also listed as “TADNOLL BROOK DOWNSTREAM BROADMAYNE STW”)
Environment Agency sampling point SW-50580183 · 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
- 27 Mar 2026, 10:056 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
- 23 since 14 Dec 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 373560, 86716As published, to the nearest 1 m. Open in a map
- River, by its own name
- Tadnoll
- River, by the map
- Not placedNearest line is 430 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
82.2%
Sampled 27 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 82.2 | 82.2% |
| 4 Feb 2026, 11:57 | 85 | 85% |
| 15 Jan 2026, 11:26 | 98.1 | 98.1% |
| 16 Dec 2025, 12:39 | 82.4 | 82.4% |
| 21 Nov 2025, 13:37 | 58.1 | 58.1% |
| 1 Oct 2025, 11:08 | 79.8 | 79.8% |
| 4 Sep 2025, 10:20 | 72.8 | 72.8% |
| 12 Aug 2025, 11:04 | 79.5 | 79.5% |
| 31 Jul 2025, 09:41 | 78.2 | 78.2% |
| 19 Jun 2025, 08:52 | 90.6 | 90.6% |
| 23 May 2025, 09:55 | 88.8 | 88.8% |
| 3 Apr 2025, 09:22 | 92.9 | 92.9% |
| 16 Dec 2024, 09:42 | 84.1 | 84.1% |
| 5 Dec 2024, 12:07 | 82.1 | 82.1% |
| 20 Nov 2024, 11:28 | 87.2 | 87.2% |
| 3 Oct 2024, 11:39 | 83.8 | 83.8% |
| 6 Sep 2024, 10:10 | 87 | 87% |
| 1 Jul 2024, 12:39 | 92.8 | 92.8% |
| 28 Jun 2024, 10:31 | 86 | 86% |
| 11 Mar 2024, 09:20 | 79.4 | 79.4% |
| 6 Feb 2024, 13:51 | 89.1 | 89.1% |
| 24 Jan 2024, 12:56 | 84.3 | 84.3% |
| 14 Dec 2023, 09:48 | 76.8 | 76.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9 mg/l
Sampled 27 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 9 | 9 mg/l |
| 4 Feb 2026, 11:57 | 9.4 | 9.4 mg/l |
| 15 Jan 2026, 11:26 | 11 | 11 mg/l |
| 16 Dec 2025, 12:39 | 9.05 | 9.05 mg/l |
| 21 Nov 2025, 13:37 | 7.13 | 7.13 mg/l |
| 1 Oct 2025, 11:08 | 8.17 | 8.17 mg/l |
| 4 Sep 2025, 10:20 | 6.95 | 6.95 mg/l |
| 12 Aug 2025, 11:04 | 7.21 | 7.21 mg/l |
| 31 Jul 2025, 09:41 | 7.19 | 7.19 mg/l |
| 19 Jun 2025, 08:52 | 9.38 | 9.38 mg/l |
| 23 May 2025, 09:55 | 9.4 | 9.4 mg/l |
| 3 Apr 2025, 09:22 | 10.3 | 10.3 mg/l |
| 16 Dec 2024, 09:42 | 9.21 | 9.21 mg/l |
| 5 Dec 2024, 12:07 | 8.83 | 8.83 mg/l |
| 20 Nov 2024, 11:28 | 9.85 | 9.85 mg/l |
| 3 Oct 2024, 11:39 | 8.89 | 8.89 mg/l |
| 6 Sep 2024, 10:10 | 8.75 | 8.75 mg/l |
| 1 Jul 2024, 12:39 | 9.46 | 9.46 mg/l |
| 28 Jun 2024, 10:31 | 8.9 | 8.9 mg/l |
| 11 Mar 2024, 09:20 | 8.8 | 8.8 mg/l |
| 6 Feb 2024, 13:51 | 9.62 | 9.62 mg/l |
| 24 Jan 2024, 12:56 | 9.28 | 9.28 mg/l |
| 14 Dec 2023, 09:48 | 8.61 | 8.61 mg/l |
Water temperature
code 0076 · °C
11.2 °C
Sampled 27 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 11.2 | 11.2 °C |
| 4 Feb 2026, 11:57 | 10.8 | 10.8 °C |
| 15 Jan 2026, 11:26 | 10.3 | 10.3 °C |
| 16 Dec 2025, 12:39 | 11.1 | 11.1 °C |
| 21 Nov 2025, 13:37 | 6.5 | 6.5 °C |
| 1 Oct 2025, 11:08 | 14.2 | 14.2 °C |
| 4 Sep 2025, 10:20 | 17.5 | 17.5 °C |
| 12 Aug 2025, 11:04 | 20 | 20 °C |
| 31 Jul 2025, 09:41 | 19.3 | 19.3 °C |
| 19 Jun 2025, 08:52 | 13.7 | 13.7 °C |
| 23 May 2025, 09:55 | 12.7 | 12.7 °C |
| 3 Apr 2025, 09:22 | 10.8 | 10.8 °C |
| 16 Dec 2024, 09:42 | 11.2 | 11.2 °C |
| 5 Dec 2024, 12:07 | 12 | 12 °C |
| 20 Nov 2024, 11:28 | 9.9 | 9.9 °C |
| 3 Oct 2024, 11:39 | 12.6 | 12.6 °C |
| 6 Sep 2024, 10:10 | 15 | 15 °C |
| 1 Jul 2024, 12:39 | 14.4 | 14.4 °C |
| 28 Jun 2024, 10:31 | 13.7 | 13.7 °C |
| 11 Mar 2024, 09:20 | 10.7 | 10.7 °C |
| 6 Feb 2024, 13:51 | 11.8 | 11.8 °C |
| 24 Jan 2024, 12:56 | 11 | 11 °C |
| 14 Dec 2023, 09:48 | 10.2 | 10.2 °C |
pH
code 0061
7.34
Sampled 27 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 7.34 | 7.34 |
| 4 Feb 2026, 11:57 | 7.44 | 7.44 |
| 15 Jan 2026, 11:26 | 7.39 | 7.39 |
| 16 Dec 2025, 12:39 | 7.43 | 7.43 |
| 21 Nov 2025, 13:37 | 7.42 | 7.42 |
| 1 Oct 2025, 11:08 | 7.57 | 7.57 |
| 4 Sep 2025, 10:20 | 7.35 | 7.35 |
| 12 Aug 2025, 11:04 | 7.81 | 7.81 |
| 31 Jul 2025, 09:41 | 7.41 | 7.41 |
| 19 Jun 2025, 08:52 | 7.49 | 7.49 |
| 23 May 2025, 09:55 | 7.38 | 7.38 |
| 3 Apr 2025, 09:22 | 7.42 | 7.42 |
| 16 Dec 2024, 09:42 | 7.43 | 7.43 |
| 5 Dec 2024, 12:07 | 7.36 | 7.36 |
| 20 Nov 2024, 11:28 | 7.58 | 7.58 |
| 3 Oct 2024, 11:39 | 7.47 | 7.47 |
| 6 Sep 2024, 10:10 | 7.47 | 7.47 |
| 1 Jul 2024, 12:39 | 7.55 | 7.55 |
| 28 Jun 2024, 10:31 | 7.49 | 7.49 |
| 11 Mar 2024, 09:20 | 7.3 | 7.3 |
| 6 Feb 2024, 13:51 | 7.43 | 7.43 |
| 24 Jan 2024, 12:56 | 7.43 | 7.43 |
| 14 Dec 2023, 09:48 | 7.18 | 7.18 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.048 mg/l
Sampled 27 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 0.048 | 0.048 mg/l |
| 4 Feb 2026, 11:57 | 0.15 | 0.15 mg/l |
| 15 Jan 2026, 11:26 | 0.51 | 0.51 mg/l |
| 16 Dec 2025, 12:39 | 0.14 | 0.14 mg/l |
| 21 Nov 2025, 13:37 | 1.5 | 1.5 mg/l |
| 1 Oct 2025, 11:08 | 0.045 | 0.045 mg/l |
| 4 Sep 2025, 10:20 | 0.073 | 0.073 mg/l |
| 12 Aug 2025, 11:04 | 0.1 | 0.1 mg/l |
| 31 Jul 2025, 09:41 | 0.06 | 0.06 mg/l |
| 19 Jun 2025, 08:52 | 0.031 | 0.031 mg/l |
| 23 May 2025, 09:55 | 0.11 | 0.11 mg/l |
| 16 Dec 2024, 09:42 | 0.081 | 0.081 mg/l |
| 20 Nov 2024, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2024, 11:39 | 0.03 | 0.03 mg/l |
| 6 Sep 2024, 10:10 | 0.11 | 0.11 mg/l |
| 1 Jul 2024, 12:39 | 0.071 | 0.071 mg/l |
| 28 Jun 2024, 10:31 | 0.088 | 0.088 mg/l |
| 11 Mar 2024, 09:20 | 0.29 | 0.29 mg/l |
| 6 Feb 2024, 13:51 | 0.068 | 0.068 mg/l |
| 24 Jan 2024, 12:56 | 0.074 | 0.074 mg/l |
| 14 Dec 2023, 09:48 | 0.3 | 0.3 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
11 mg/l
Sampled 27 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 11 | 11 mg/l |
| 4 Feb 2026, 11:57 | 9.27 | 9.27 mg/l |
| 15 Jan 2026, 11:26 | 8.5 | 8.5 mg/l |
| 16 Dec 2025, 12:39 | 9.57 | 9.57 mg/l |
| 21 Nov 2025, 13:37 | 33.4 | 33.4 mg/l |
| 1 Oct 2025, 11:08 | 46.9 | 46.9 mg/l |
| 4 Sep 2025, 10:20 | 26.9 | 26.9 mg/l |
| 12 Aug 2025, 11:04 | 50.8 | 50.8 mg/l |
| 31 Jul 2025, 09:41 | 49.8 | 49.8 mg/l |
| 19 Jun 2025, 08:52 | 12 | 12 mg/l |
| 23 May 2025, 09:55 | 12 | 12 mg/l |
| 16 Dec 2024, 09:42 | 9.87 | 9.87 mg/l |
| 20 Nov 2024, 11:28 | 9.98 | 9.98 mg/l |
| 3 Oct 2024, 11:39 | 9.67 | 9.67 mg/l |
| 6 Sep 2024, 10:10 | 12.9 | 12.9 mg/l |
| 1 Jul 2024, 12:39 | 12 | 12 mg/l |
| 28 Jun 2024, 10:31 | 11 | 11 mg/l |
| 11 Mar 2024, 09:20 | 9.44 | 9.44 mg/l |
| 6 Feb 2024, 13:51 | 9.48 | 9.48 mg/l |
| 24 Jan 2024, 12:56 | 9.43 | 9.43 mg/l |
| 14 Dec 2023, 09:48 | 9.36 | 9.36 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 27 Mar 2026, 6 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 0.18 | 0.18 mg/l |
| 4 Feb 2026, 11:57 | 0.12 | 0.12 mg/l |
| 15 Jan 2026, 11:26 | 0.2 | 0.2 mg/l |
| 16 Dec 2025, 12:39 | 0.16 | 0.16 mg/l |
| 21 Nov 2025, 13:37 | 4.1 | 4.1 mg/l |
| 1 Oct 2025, 11:08 | 5.2 | 5.2 mg/l |
| 4 Sep 2025, 10:20 | 4.3 | 4.3 mg/l |
| 12 Aug 2025, 11:04 | 7.1 | 7.1 mg/l |
| 31 Jul 2025, 09:41 | 6.7 | 6.7 mg/l |
| 19 Jun 2025, 08:52 | 0.62 | 0.62 mg/l |
| 23 May 2025, 09:55 | 0.56 | 0.56 mg/l |
| 16 Dec 2024, 09:42 | 0.11 | 0.11 mg/l |
| 20 Nov 2024, 11:28 | 0.19 | 0.19 mg/l |
| 3 Oct 2024, 11:39 | 0.22 | 0.22 mg/l |
| 6 Sep 2024, 10:10 | 1.2 | 1.2 mg/l |
| 1 Jul 2024, 12:39 | 0.44 | 0.44 mg/l |
| 28 Jun 2024, 10:31 | 0.44 | 0.44 mg/l |
| 11 Mar 2024, 09:20 | 0.13 | 0.13 mg/l |
| 6 Feb 2024, 13:51 | 0.13 | 0.13 mg/l |
| 24 Jan 2024, 12:56 | 0.11 | 0.11 mg/l |
| 14 Dec 2023, 09:48 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
648 µS/cm
Sampled 27 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 27 Mar 2026, 10:05 | 648 | 648 µS/cm |
| 4 Feb 2026, 11:57 | 627 | 627 µS/cm |
| 15 Jan 2026, 11:26 | 557 | 557 µS/cm |
| 16 Dec 2025, 12:39 | 616 | 616 µS/cm |
| 21 Nov 2025, 13:37 | 1010 | 1010 µS/cm |
| 1 Oct 2025, 11:08 | 1162 | 1162 µS/cm |
| 4 Sep 2025, 10:20 | 707 | 707 µS/cm |
| 12 Aug 2025, 11:04 | 746 | 746 µS/cm |
| 31 Jul 2025, 09:41 | 1255 | 1255 µS/cm |
| 19 Jun 2025, 08:52 | 677 | 677 µS/cm |
| 23 May 2025, 09:55 | 678 | 678 µS/cm |
| 3 Apr 2025, 09:22 | 640 | 640 µS/cm |
| 16 Dec 2024, 09:42 | 640 | 640 µS/cm |
| 5 Dec 2024, 12:07 | 616 | 616 µS/cm |
| 20 Nov 2024, 11:28 | 641 | 641 µS/cm |
| 3 Oct 2024, 11:39 | 637 | 637 µS/cm |
| 6 Sep 2024, 10:10 | 659 | 659 µS/cm |
| 1 Jul 2024, 12:39 | 687 | 687 µS/cm |
| 28 Jun 2024, 10:31 | 687 | 687 µS/cm |
| 11 Mar 2024, 09:20 | 633 | 633 µS/cm |
| 6 Feb 2024, 13:51 | 651 | 651 µS/cm |
| 24 Jan 2024, 12:56 | 646 | 646 µS/cm |
| 14 Dec 2023, 09:48 | 641 | 641 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Dec 2023 – Mar 2026 | 82.2% 27 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Dec 2023 – Mar 2026 | 9 mg/l 27 Mar 2026 |
| Temperature of Water 0076 | River water | 23 | Dec 2023 – Mar 2026 | 11.2 °C 27 Mar 2026 |
| pH 0061 | River water | 23 | Dec 2023 – Mar 2026 | 7.34 27 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Dec 2023 – Mar 2026 | 0.048 mg/l 27 Mar 2026 |
| Nitrate as N 0117 | River water | 21 | Dec 2023 – Mar 2026 | 11 mg/l 27 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Dec 2023 – Mar 2026 | 0.18 mg/l 27 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Dec 2023 – Mar 2026 | 648 µS/cm 27 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Dec 2023 – Mar 2026 | 240 mg/l 27 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Dec 2023 – Mar 2026 | 0.00021 mg/l 27 Mar 2026 |
| Nitrite as N 0118 | River water | 21 | Dec 2023 – Mar 2026 | 0.025 mg/l 27 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Dec 2023 – Mar 2026 | 11 mg/l 27 Mar 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.