Horse Brook downstream of M40 Pollution Pond
EA name: HORSE BROOK DS M40 POLLUTION POND
Environment Agency sampling point MD-10762280 · 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
- 30 Apr 2026, 13:445 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
- 22 since 17 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 426590, 262213As published, to the nearest 1 m. Open in a map
- River, by its own name
- Horse Brook
- River, by the map
- Not placedIts name gives Horse Brook; the only line close by, 3 m away, is Longbridge Brook and is not traced into it. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
122.8%
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 122.8 | 122.8% |
| 19 Feb 2026, 13:02 | 98.4 | 98.4% |
| 7 Oct 2025, 10:25 | 83.1 | 83.1% |
| 31 Jul 2025, 14:15 | 103.4 | 103.4% |
| 11 Mar 2025, 12:30 | 111.3 | 111.3% |
| 13 Feb 2025, 12:05 | 101 | 101% |
| 28 Jan 2025, 11:04 | 94.7 | 94.7% |
| 9 Dec 2024, 13:20 | 95.6 | 95.6% |
| 21 Nov 2024, 10:32 | 95.9 | 95.9% |
| 24 Oct 2024, 11:00 | 95.6 | 95.6% |
| 19 Sep 2024, 13:53 | 106.6 | 106.6% |
| 20 Jun 2024, 12:31 | 114.1 | 114.1% |
| 20 May 2024, 11:11 | 106.7 | 106.7% |
| 16 Apr 2024, 11:03 | 97.3 | 97.3% |
| 20 Mar 2024, 14:10 | 105.7 | 105.7% |
| 29 Feb 2024, 10:19 | 98.5 | 98.5% |
| 16 Jan 2024, 13:59 | 102 | 102% |
| 12 Dec 2023, 11:59 | 96.9 | 96.9% |
| 27 Nov 2023, 13:17 | 94.6 | 94.6% |
| 17 Oct 2023, 11:18 | 92.6 | 92.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
13 mg/l
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 13 | 13 mg/l |
| 19 Feb 2026, 13:02 | 12.2 | 12.2 mg/l |
| 7 Oct 2025, 10:25 | 8.79 | 8.79 mg/l |
| 31 Jul 2025, 14:15 | 9.78 | 9.78 mg/l |
| 11 Mar 2025, 12:30 | 13.1 | 13.1 mg/l |
| 13 Feb 2025, 12:05 | 12.6 | 12.6 mg/l |
| 28 Jan 2025, 11:04 | 11.5 | 11.5 mg/l |
| 9 Dec 2024, 13:20 | 11.4 | 11.4 mg/l |
| 21 Nov 2024, 10:32 | 12 | 12 mg/l |
| 24 Oct 2024, 11:00 | 10.3 | 10.3 mg/l |
| 19 Sep 2024, 13:53 | 10.6 | 10.6 mg/l |
| 20 Jun 2024, 12:31 | 11.3 | 11.3 mg/l |
| 20 May 2024, 11:11 | 11 | 11 mg/l |
| 16 Apr 2024, 11:03 | 11 | 11 mg/l |
| 20 Mar 2024, 14:10 | 11.4 | 11.4 mg/l |
| 29 Feb 2024, 10:19 | 11.3 | 11.3 mg/l |
| 16 Jan 2024, 13:59 | 12.9 | 12.9 mg/l |
| 12 Dec 2023, 11:59 | 11.3 | 11.3 mg/l |
| 27 Nov 2023, 13:17 | 11 | 11 mg/l |
| 17 Oct 2023, 11:18 | 10.1 | 10.1 mg/l |
Water temperature
code 0076 · °C
12.6 °C
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 12.6 | 12.6 °C |
| 19 Feb 2026, 13:02 | 6 | 6 °C |
| 7 Oct 2025, 10:25 | 12.7 | 12.7 °C |
| 31 Jul 2025, 14:15 | 17.9 | 17.9 °C |
| 11 Mar 2025, 12:30 | 8.3 | 8.3 °C |
| 13 Feb 2025, 12:05 | 6 | 6 °C |
| 28 Jan 2025, 11:04 | 6.8 | 6.8 °C |
| 9 Dec 2024, 13:20 | 7.8 | 7.8 °C |
| 21 Nov 2024, 10:32 | 5.8 | 5.8 °C |
| 24 Oct 2024, 11:00 | 11.9 | 11.9 °C |
| 19 Sep 2024, 13:53 | 15.4 | 15.4 °C |
| 20 Jun 2024, 12:31 | 15.9 | 15.9 °C |
| 20 May 2024, 11:11 | 13.7 | 13.7 °C |
| 16 Apr 2024, 11:03 | 10 | 10 °C |
| 20 Mar 2024, 14:10 | 11.7 | 11.7 °C |
| 29 Feb 2024, 10:19 | 9.1 | 9.1 °C |
| 16 Jan 2024, 13:59 | 5.2 | 5.2 °C |
| 12 Dec 2023, 11:59 | 8.4 | 8.4 °C |
| 27 Nov 2023, 13:17 | 8.6 | 8.6 °C |
| 17 Oct 2023, 11:18 | 11.3 | 11.3 °C |
pH
code 0061
8.45
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 8.45 | 8.45 |
| 19 Feb 2026, 13:02 | 8.26 | 8.26 |
| 7 Oct 2025, 10:25 | 8.15 | 8.15 |
| 31 Jul 2025, 14:15 | 8.35 | 8.35 |
| 11 Mar 2025, 12:30 | 8.47 | 8.47 |
| 13 Feb 2025, 12:05 | 8.42 | 8.42 |
| 28 Jan 2025, 11:04 | 7.9 | 7.9 |
| 9 Dec 2024, 13:20 | 7.99 | 7.99 |
| 21 Nov 2024, 10:32 | 8.22 | 8.22 |
| 24 Oct 2024, 11:00 | 8.13 | 8.13 |
| 19 Sep 2024, 13:53 | 8.39 | 8.39 |
| 20 Jun 2024, 12:31 | 8.42 | 8.42 |
| 20 May 2024, 11:11 | 8.25 | 8.25 |
| 16 Apr 2024, 11:03 | 8.1 | 8.1 |
| 20 Mar 2024, 14:10 | 8.2 | 8.2 |
| 29 Feb 2024, 10:19 | 8.14 | 8.14 |
| 16 Jan 2024, 13:59 | 8.24 | 8.24 |
| 12 Dec 2023, 11:59 | 7.79 | 7.79 |
| 27 Nov 2023, 13:17 | 8.16 | 8.16 |
| 17 Oct 2023, 11:18 | 8.2 | 8.2 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2026, 13:02 | 0.038 | 0.038 mg/l |
| 7 Oct 2025, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jul 2025, 14:15 | 0.039 | 0.039 mg/l |
| 11 Mar 2025, 12:30 | 0.14 | 0.14 mg/l |
| 13 Feb 2025, 12:05 | 0.04 | 0.04 mg/l |
| 28 Jan 2025, 11:04 | 0.049 | 0.049 mg/l |
| 9 Dec 2024, 13:20 | 0.04 | 0.04 mg/l |
| 21 Nov 2024, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Oct 2024, 11:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Sep 2024, 13:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 12:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 May 2024, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2024, 11:03 | 0.05 | 0.05 mg/l |
| 20 Mar 2024, 14:10 | 0.052 | 0.052 mg/l |
| 29 Feb 2024, 10:19 | 0.11 | 0.11 mg/l |
| 16 Jan 2024, 13:59 | 0.14 | 0.14 mg/l |
| 12 Dec 2023, 11:59 | 0.044 | 0.044 mg/l |
| 27 Nov 2023, 13:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Oct 2023, 11:18 | 0.035 | 0.035 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.37 mg/l
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 8.37 | 8.37 mg/l |
| 19 Feb 2026, 13:02 | 3.2 | 3.2 mg/l |
| 7 Oct 2025, 10:25 | 6.88 | 6.88 mg/l |
| 31 Jul 2025, 14:15 | 7.16 | 7.16 mg/l |
| 11 Mar 2025, 12:30 | 9.2 | 9.2 mg/l |
| 13 Feb 2025, 12:05 | 8.98 | 8.98 mg/l |
| 28 Jan 2025, 11:04 | 5.49 | 5.49 mg/l |
| 9 Dec 2024, 13:20 | 5.89 | 5.89 mg/l |
| 21 Nov 2024, 10:32 | 8.19 | 8.19 mg/l |
| 24 Oct 2024, 11:00 | 7.88 | 7.88 mg/l |
| 19 Sep 2024, 13:53 | 9.78 | 9.78 mg/l |
| 20 Jun 2024, 12:31 | 9.97 | 9.97 mg/l |
| 20 May 2024, 11:11 | 9.96 | 9.96 mg/l |
| 16 Apr 2024, 11:03 | 7.04 | 7.04 mg/l |
| 20 Mar 2024, 14:10 | 6.86 | 6.86 mg/l |
| 29 Feb 2024, 10:19 | 8.73 | 8.73 mg/l |
| 16 Jan 2024, 13:59 | 9.94 | 9.94 mg/l |
| 12 Dec 2023, 11:59 | 3.99 | 3.99 mg/l |
| 27 Nov 2023, 13:17 | 7.98 | 7.98 mg/l |
| 17 Oct 2023, 11:18 | 8.79 | 8.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.082 mg/l
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 0.082 | 0.082 mg/l |
| 19 Feb 2026, 13:02 | 0.24 | 0.24 mg/l |
| 7 Oct 2025, 10:25 | 0.13 | 0.13 mg/l |
| 31 Jul 2025, 14:15 | 0.15 | 0.15 mg/l |
| 11 Mar 2025, 12:30 | 0.14 | 0.14 mg/l |
| 13 Feb 2025, 12:05 | 0.15 | 0.15 mg/l |
| 28 Jan 2025, 11:04 | 0.24 | 0.24 mg/l |
| 9 Dec 2024, 13:20 | 0.22 | 0.22 mg/l |
| 21 Nov 2024, 10:32 | 0.21 | 0.21 mg/l |
| 24 Oct 2024, 11:00 | 0.15 | 0.15 mg/l |
| 19 Sep 2024, 13:53 | 0.11 | 0.11 mg/l |
| 20 Jun 2024, 12:31 | 0.11 | 0.11 mg/l |
| 20 May 2024, 11:11 | 0.14 | 0.14 mg/l |
| 16 Apr 2024, 11:03 | 0.22 | 0.22 mg/l |
| 20 Mar 2024, 14:10 | 0.22 | 0.22 mg/l |
| 29 Feb 2024, 10:19 | 0.21 | 0.21 mg/l |
| 16 Jan 2024, 13:59 | 0.15 | 0.15 mg/l |
| 12 Dec 2023, 11:59 | 0.24 | 0.24 mg/l |
| 27 Nov 2023, 13:17 | 0.14 | 0.14 mg/l |
| 17 Oct 2023, 11:18 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1035 µS/cm
Sampled 30 Apr 2026, 5 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 30 Apr 2026, 13:44 | 1035 | 1035 µS/cm |
| 19 Feb 2026, 13:02 | 689 | 689 µS/cm |
| 7 Oct 2025, 10:25 | 1048 | 1048 µS/cm |
| 31 Jul 2025, 14:15 | 1062 | 1062 µS/cm |
| 11 Mar 2025, 12:30 | 1018 | 1018 µS/cm |
| 13 Feb 2025, 12:05 | 1001 | 1001 µS/cm |
| 28 Jan 2025, 11:04 | 626 | 626 µS/cm |
| 9 Dec 2024, 13:20 | 648 | 648 µS/cm |
| 21 Nov 2024, 10:32 | 797 | 797 µS/cm |
| 24 Oct 2024, 11:00 | 904 | 904 µS/cm |
| 19 Sep 2024, 13:53 | 1052 | 1052 µS/cm |
| 20 Jun 2024, 12:31 | 1040 | 1040 µS/cm |
| 20 May 2024, 11:11 | 1042 | 1042 µS/cm |
| 16 Apr 2024, 11:03 | 813 | 813 µS/cm |
| 20 Mar 2024, 14:10 | 881 | 881 µS/cm |
| 29 Feb 2024, 10:19 | 1193 | 1193 µS/cm |
| 16 Jan 2024, 13:59 | 1031 | 1031 µS/cm |
| 12 Dec 2023, 11:59 | 499 | 499 µS/cm |
| 27 Nov 2023, 13:17 | 1248 | 1248 µS/cm |
| 17 Oct 2023, 11:18 | 1035 | 1035 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 20 | Oct 2023 – Apr 2026 | 122.8% 30 Apr 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Oct 2023 – Apr 2026 | 13 mg/l 30 Apr 2026 |
| Temperature of Water 0076 | River water | 20 | Oct 2023 – Apr 2026 | 12.6 °C 30 Apr 2026 |
| pH 0061 | River water | 20 | Oct 2023 – Apr 2026 | 8.45 30 Apr 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Oct 2023 – Apr 2026 | below 0.03 mg/l 30 Apr 2026 |
| Nitrate as N 0117 | River water | 20 | Oct 2023 – Apr 2026 | 8.37 mg/l 30 Apr 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Oct 2023 – Apr 2026 | 0.082 mg/l 30 Apr 2026 |
| Conductivity at 25 C 0077 | River water | 20 | Oct 2023 – Apr 2026 | 1035 µS/cm 30 Apr 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Oct 2023 – Apr 2026 | 370 mg/l 30 Apr 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Oct 2023 – Apr 2026 | below 0.00066 mg/l 30 Apr 2026 |
| BOD : 5 Day ATU 0085 | River water | 16 | Feb 2024 – Apr 2026 | 1 mg/l 30 Apr 2026 |
| Nitrite as N 0118 | River water | 20 | Oct 2023 – Apr 2026 | 0.029 mg/l 30 Apr 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Oct 2023 – Apr 2026 | 8.4 mg/l 30 Apr 2026 |
| No flow /No sample 7668 | River water | 2 | Jul 2024 – Aug 2024 | No flow/discharge at sampling point 29 Aug 2024 |
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.