North Brook upstream of Cottesmore sewage treatment works
EA name: NORTH BROOK U/S COTTESMORE STW
Environment Agency sampling point AN-NORTHBK · 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
- 18 May 2026, 11:334 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 21 Feb 2024 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 491336, 314198As published, to the nearest 1 m. Open in a map
- River, by its own name
- North Brook
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (27 samples)
5 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
93.3%
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 93.3 | 93.3% |
| 1 May 2026, 11:14 | 93.3 | 93.3% |
| 17 Apr 2026, 13:25 | 93.7 | 93.7% |
| 1 Apr 2026, 11:59 | 95.5 | 95.5% |
| 16 Mar 2026, 10:16 | 96.1 | 96.1% |
| 2 Mar 2026, 14:13 | 94.4 | 94.4% |
| 16 Feb 2026, 13:36 | 92.5 | 92.5% |
| 5 Feb 2026, 10:03 | 90.5 | 90.5% |
| 19 Jan 2026, 12:27 | 91.4 | 91.4% |
| 7 Jan 2026, 09:35 | 101.8 | 101.8% |
| 17 Dec 2025, 11:27 | 89.7 | 89.7% |
| 1 Dec 2025, 10:17 | 84.8 | 84.8% |
| 18 Nov 2025, 11:02 | 87.1 | 87.1% |
| 3 Oct 2025, 12:16 | 85 | 85% |
| 8 Sep 2025, 12:40 | 69.2 | 69.2% |
| 4 Aug 2025, 12:05 | 82.5 | 82.5% |
| 7 Jul 2025, 14:07 | 81.6 | 81.6% |
| 9 Jun 2025, 11:37 | 85.2 | 85.2% |
| 22 May 2025, 10:49 | 94.6 | 94.6% |
| 9 May 2025, 10:28 | 96.4 | 96.4% |
| 22 Apr 2025, 11:10 | 95 | 95% |
| 21 Feb 2024, 10:28 | 91.1 | 91.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.5 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 10.5 | 10.5 mg/l |
| 1 May 2026, 11:14 | 10.1 | 10.1 mg/l |
| 17 Apr 2026, 13:25 | 9.89 | 9.89 mg/l |
| 1 Apr 2026, 11:59 | 11 | 11 mg/l |
| 16 Mar 2026, 10:16 | 11.5 | 11.5 mg/l |
| 2 Mar 2026, 14:13 | 10.6 | 10.6 mg/l |
| 16 Feb 2026, 13:36 | 11.2 | 11.2 mg/l |
| 5 Feb 2026, 10:03 | 11.1 | 11.1 mg/l |
| 19 Jan 2026, 12:27 | 11 | 11 mg/l |
| 7 Jan 2026, 09:35 | 12.9 | 12.9 mg/l |
| 17 Dec 2025, 11:27 | 10.8 | 10.8 mg/l |
| 1 Dec 2025, 10:17 | 9.79 | 9.79 mg/l |
| 18 Nov 2025, 11:02 | 10.2 | 10.2 mg/l |
| 3 Oct 2025, 12:16 | 8.76 | 8.76 mg/l |
| 8 Sep 2025, 12:40 | 6.83 | 6.83 mg/l |
| 4 Aug 2025, 12:05 | 8.05 | 8.05 mg/l |
| 7 Jul 2025, 14:07 | 8.08 | 8.08 mg/l |
| 9 Jun 2025, 11:37 | 9.04 | 9.04 mg/l |
| 22 May 2025, 10:49 | 10.9 | 10.9 mg/l |
| 9 May 2025, 10:28 | 10.8 | 10.8 mg/l |
| 22 Apr 2025, 11:10 | 10.4 | 10.4 mg/l |
| 21 Feb 2024, 10:28 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
10.2 °C
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 10.2 | 10.2 °C |
| 1 May 2026, 11:14 | 11.9 | 11.9 °C |
| 17 Apr 2026, 13:25 | 12.8 | 12.8 °C |
| 1 Apr 2026, 11:59 | 9.2 | 9.2 °C |
| 16 Mar 2026, 10:16 | 7.4 | 7.4 °C |
| 2 Mar 2026, 14:13 | 10 | 10 °C |
| 16 Feb 2026, 13:36 | 6.9 | 6.9 °C |
| 5 Feb 2026, 10:03 | 6.5 | 6.5 °C |
| 19 Jan 2026, 12:27 | 7.4 | 7.4 °C |
| 7 Jan 2026, 09:35 | 5.4 | 5.4 °C |
| 17 Dec 2025, 11:27 | 7.2 | 7.2 °C |
| 1 Dec 2025, 10:17 | 9 | 9 °C |
| 18 Nov 2025, 11:02 | 8.2 | 8.2 °C |
| 3 Oct 2025, 12:16 | 13.9 | 13.9 °C |
| 8 Sep 2025, 12:40 | 15.9 | 15.9 °C |
| 4 Aug 2025, 12:05 | 16.4 | 16.4 °C |
| 7 Jul 2025, 14:07 | 15.7 | 15.7 °C |
| 9 Jun 2025, 11:37 | 12.6 | 12.6 °C |
| 22 May 2025, 10:49 | 9.1 | 9.1 °C |
| 9 May 2025, 10:28 | 10.1 | 10.1 °C |
| 22 Apr 2025, 11:10 | 11.1 | 11.1 °C |
| 21 Feb 2024, 10:28 | 8.5 | 8.5 °C |
pH
code 0061
8.18
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 8.18 | 8.18 |
| 1 May 2026, 11:14 | 8.16 | 8.16 |
| 17 Apr 2026, 13:25 | 8.21 | 8.21 |
| 1 Apr 2026, 11:59 | 8.14 | 8.14 |
| 16 Mar 2026, 10:16 | 8.07 | 8.07 |
| 2 Mar 2026, 14:13 | 7.84 | 7.84 |
| 16 Feb 2026, 13:36 | 7.86 | 7.86 |
| 5 Feb 2026, 10:03 | 7.91 | 7.91 |
| 19 Jan 2026, 12:27 | 7.4 | 7.4 |
| 7 Jan 2026, 09:35 | 8.13 | 8.13 |
| 17 Dec 2025, 11:27 | 7.82 | 7.82 |
| 1 Dec 2025, 10:17 | 7.75 | 7.75 |
| 18 Nov 2025, 11:02 | 7.93 | 7.93 |
| 3 Oct 2025, 12:16 | 8.01 | 8.01 |
| 8 Sep 2025, 12:40 | 7.87 | 7.87 |
| 4 Aug 2025, 12:05 | 8.04 | 8.04 |
| 7 Jul 2025, 14:07 | 8 | 8 |
| 9 Jun 2025, 11:37 | 8.16 | 8.16 |
| 22 May 2025, 10:49 | 8.19 | 8.19 |
| 9 May 2025, 10:28 | 8.16 | 8.16 |
| 22 Apr 2025, 11:10 | 8.21 | 8.21 |
| 21 Feb 2024, 10:28 | 7.69 | 7.69 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 May 2026, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2026, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Apr 2026, 11:59 | 0.05 | 0.05 mg/l |
| 16 Mar 2026, 10:16 | 0.036 | 0.036 mg/l |
| 2 Mar 2026, 14:13 | 0.048 | 0.048 mg/l |
| 16 Feb 2026, 13:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 10:03 | 0.071 | 0.071 mg/l |
| 19 Jan 2026, 12:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jan 2026, 09:35 | 0.032 | 0.032 mg/l |
| 17 Dec 2025, 11:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Dec 2025, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2025, 11:02 | 0.048 | 0.048 mg/l |
| 3 Oct 2025, 12:16 | 0.045 | 0.045 mg/l |
| 8 Sep 2025, 12:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Aug 2025, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jul 2025, 14:07 | 0.037 | 0.037 mg/l |
| 9 Jun 2025, 11:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2025, 10:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 May 2025, 10:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Apr 2025, 11:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Feb 2024, 10:28 | 0.062 | 0.062 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
11 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 11 | 11 mg/l |
| 1 May 2026, 11:14 | 10.9 | 10.9 mg/l |
| 17 Apr 2026, 13:25 | 11.9 | 11.9 mg/l |
| 1 Apr 2026, 11:59 | 13.9 | 13.9 mg/l |
| 16 Mar 2026, 10:16 | 12 | 12 mg/l |
| 2 Mar 2026, 14:13 | 11 | 11 mg/l |
| 16 Feb 2026, 13:36 | 11 | 11 mg/l |
| 5 Feb 2026, 10:03 | 12 | 12 mg/l |
| 19 Jan 2026, 12:27 | 13 | 13 mg/l |
| 7 Jan 2026, 09:35 | 14 | 14 mg/l |
| 17 Dec 2025, 11:27 | 12 | 12 mg/l |
| 1 Dec 2025, 10:17 | 9.38 | 9.38 mg/l |
| 18 Nov 2025, 11:02 | 9.33 | 9.33 mg/l |
| 3 Oct 2025, 12:16 | 1.56 | 1.56 mg/l |
| 8 Sep 2025, 12:40 | <0.196 | below 0.196 mg/l (not detected above this) |
| 4 Aug 2025, 12:05 | 0.866 | 0.866 mg/l |
| 7 Jul 2025, 14:07 | 2.48 | 2.48 mg/l |
| 9 Jun 2025, 11:37 | 4.99 | 4.99 mg/l |
| 22 May 2025, 10:49 | 6.2 | 6.2 mg/l |
| 9 May 2025, 10:28 | 9.99 | 9.99 mg/l |
| 22 Apr 2025, 11:10 | 9.09 | 9.09 mg/l |
| 21 Feb 2024, 10:28 | 8.48 | 8.48 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.16 mg/l
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 0.16 | 0.16 mg/l |
| 1 May 2026, 11:14 | 0.21 | 0.21 mg/l |
| 17 Apr 2026, 13:25 | 0.16 | 0.16 mg/l |
| 1 Apr 2026, 11:59 | 0.13 | 0.13 mg/l |
| 16 Mar 2026, 10:16 | 0.081 | 0.081 mg/l |
| 2 Mar 2026, 14:13 | 0.074 | 0.074 mg/l |
| 16 Feb 2026, 13:36 | 0.041 | 0.041 mg/l |
| 5 Feb 2026, 10:03 | 0.17 | 0.17 mg/l |
| 19 Jan 2026, 12:27 | 0.082 | 0.082 mg/l |
| 7 Jan 2026, 09:35 | 0.096 | 0.096 mg/l |
| 17 Dec 2025, 11:27 | 0.091 | 0.091 mg/l |
| 1 Dec 2025, 10:17 | 0.11 | 0.11 mg/l |
| 18 Nov 2025, 11:02 | 0.14 | 0.14 mg/l |
| 3 Oct 2025, 12:16 | 0.47 | 0.47 mg/l |
| 8 Sep 2025, 12:40 | 0.57 | 0.57 mg/l |
| 4 Aug 2025, 12:05 | 0.64 | 0.64 mg/l |
| 7 Jul 2025, 14:07 | 0.28 | 0.28 mg/l |
| 9 Jun 2025, 11:37 | 0.26 | 0.26 mg/l |
| 22 May 2025, 10:49 | 0.32 | 0.32 mg/l |
| 9 May 2025, 10:28 | 0.3 | 0.3 mg/l |
| 22 Apr 2025, 11:10 | 0.22 | 0.22 mg/l |
| 21 Feb 2024, 10:28 | 0.081 | 0.081 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
722 µS/cm
Sampled 18 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 May 2026, 11:33 | 722 | 722 µS/cm |
| 1 May 2026, 11:14 | 724 | 724 µS/cm |
| 17 Apr 2026, 13:25 | 679 | 679 µS/cm |
| 1 Apr 2026, 11:59 | 650 | 650 µS/cm |
| 16 Mar 2026, 10:16 | 585 | 585 µS/cm |
| 2 Mar 2026, 14:13 | 551 | 551 µS/cm |
| 16 Feb 2026, 13:36 | 537 | 537 µS/cm |
| 5 Feb 2026, 10:03 | 607 | 607 µS/cm |
| 19 Jan 2026, 12:27 | 595 | 595 µS/cm |
| 7 Jan 2026, 09:35 | 711 | 711 µS/cm |
| 17 Dec 2025, 11:27 | 597 | 597 µS/cm |
| 1 Dec 2025, 10:17 | 780 | 780 µS/cm |
| 18 Nov 2025, 11:02 | 604 | 604 µS/cm |
| 3 Oct 2025, 12:16 | 550 | 550 µS/cm |
| 8 Sep 2025, 12:40 | 743 | 743 µS/cm |
| 4 Aug 2025, 12:05 | 761 | 761 µS/cm |
| 7 Jul 2025, 14:07 | 524 | 524 µS/cm |
| 9 Jun 2025, 11:37 | 728 | 728 µS/cm |
| 22 May 2025, 10:49 | 773 | 773 µS/cm |
| 9 May 2025, 10:28 | 752 | 752 µS/cm |
| 22 Apr 2025, 11:10 | 711 | 711 µS/cm |
| 21 Feb 2024, 10:28 | 428 | 428 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 | 22 | Feb 2024 – May 2026 | 93.3% 18 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Feb 2024 – May 2026 | 10.5 mg/l 18 May 2026 |
| Temperature of Water 0076 | River water | 22 | Feb 2024 – May 2026 | 10.2 °C 18 May 2026 |
| pH 0061 | River water | 22 | Feb 2024 – May 2026 | 8.18 18 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Feb 2024 – May 2026 | below 0.03 mg/l 18 May 2026 |
| Nitrate as N 0117 | River water | 22 | Feb 2024 – May 2026 | 11 mg/l 18 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Feb 2024 – May 2026 | 0.16 mg/l 18 May 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Feb 2024 – May 2026 | 722 µS/cm 18 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Feb 2024 – May 2026 | 210 mg/l 18 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Feb 2024 – May 2026 | below 0.00056 mg/l 18 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 21 | Feb 2024 – May 2026 | 1.2 mg/l 18 May 2026 |
| Nitrite as N 0118 | River water | 22 | Feb 2024 – May 2026 | 0.014 mg/l 18 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Feb 2024 – May 2026 | 11 mg/l 18 May 2026 |
| No flow /No sample 7668 | River water | 5 | Mar 2024 – Nov 2025 | No flow/discharge at sampling point 7 Nov 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.