Barnwell Brook Access Bridge B'well sewage treatment works
EA name: BARNWELL BK.ACCESS BRIDGE B'WELL STW
Environment Agency sampling point AN-BARN080B · 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
- 11 Sep 2026, 11:0920 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 3 Jun 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 505124, 286652As published, to the nearest 1 m. Open in a map
- River, by its own name
- Barnwell Brook
- River, by the map
- Barnwell BrookPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- WANSFORD A47 NO1 WITS 22 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (28 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
61.2%
Sampled 11 Sep 2026, 20 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 61.2 | 61.2% |
| 5 Aug 2026, 11:41 | 33.3 | 33.3% |
| 17 Jul 2026, 10:25 | 57.6 | 57.6% |
| 8 Jun 2026, 09:09 | 64.5 | 64.5% |
| 18 May 2026, 11:21 | 60.5 | 60.5% |
| 22 Apr 2026, 10:30 | 87.7 | 87.7% |
| 20 Mar 2026, 14:27 | 118.4 | 118.4% |
| 12 Feb 2026, 10:12 | 94 | 94% |
| 8 Jan 2026, 09:40 | 87.1 | 87.1% |
| 1 Dec 2025, 15:03 | 82.7 | 82.7% |
| 7 Nov 2025, 09:46 | 56.4 | 56.4% |
| 24 Oct 2025, 09:43 | 59.5 | 59.5% |
| 9 Sep 2025, 09:08 | 41.3 | 41.3% |
| 12 Aug 2025, 09:34 | 58.1 | 58.1% |
| 4 Jul 2025, 07:34 | 41.3 | 41.3% |
| 10 Jun 2025, 10:33 | 58.6 | 58.6% |
| 7 May 2025, 10:35 | 74.9 | 74.9% |
| 2 Apr 2025, 12:35 | 103.4 | 103.4% |
| 11 Mar 2025, 12:17 | 111.8 | 111.8% |
| 10 Feb 2025, 10:22 | 96.1 | 96.1% |
| 24 Jan 2025, 11:09 | 92 | 92% |
| 4 Dec 2024, 14:19 | 91.9 | 91.9% |
| 5 Nov 2024, 11:09 | 74.8 | 74.8% |
| 9 Oct 2024, 09:20 | 93.5 | 93.5% |
| 12 Sep 2024, 08:57 | 67.2 | 67.2% |
| 7 Aug 2024, 11:42 | 60.6 | 60.6% |
| 2 Jul 2024, 13:30 | 75 | 75% |
| 3 Jun 2024, 09:03 | 47.8 | 47.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.92 mg/l
Sampled 11 Sep 2026, 20 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 5.92 | 5.92 mg/l |
| 5 Aug 2026, 11:41 | 3.06 | 3.06 mg/l |
| 17 Jul 2026, 10:25 | 5.33 | 5.33 mg/l |
| 8 Jun 2026, 09:09 | 6.54 | 6.54 mg/l |
| 18 May 2026, 11:21 | 6.67 | 6.67 mg/l |
| 22 Apr 2026, 10:30 | 10.1 | 10.1 mg/l |
| 20 Mar 2026, 14:27 | 13.4 | 13.4 mg/l |
| 12 Feb 2026, 10:12 | 11.4 | 11.4 mg/l |
| 8 Jan 2026, 09:40 | 11.5 | 11.5 mg/l |
| 1 Dec 2025, 15:03 | 9.61 | 9.61 mg/l |
| 7 Nov 2025, 09:46 | 5.84 | 5.84 mg/l |
| 24 Oct 2025, 09:43 | 6.66 | 6.66 mg/l |
| 9 Sep 2025, 09:08 | 4.15 | 4.15 mg/l |
| 12 Aug 2025, 09:34 | 5.42 | 5.42 mg/l |
| 4 Jul 2025, 07:34 | 4.07 | 4.07 mg/l |
| 10 Jun 2025, 10:33 | 5.91 | 5.91 mg/l |
| 7 May 2025, 10:35 | 8.34 | 8.34 mg/l |
| 2 Apr 2025, 12:35 | 11.8 | 11.8 mg/l |
| 11 Mar 2025, 12:17 | 13.5 | 13.5 mg/l |
| 10 Feb 2025, 10:22 | 12.2 | 12.2 mg/l |
| 24 Jan 2025, 11:09 | 11.2 | 11.2 mg/l |
| 4 Dec 2024, 14:19 | 11.1 | 11.1 mg/l |
| 5 Nov 2024, 11:09 | 8.12 | 8.12 mg/l |
| 9 Oct 2024, 09:20 | 9.81 | 9.81 mg/l |
| 12 Sep 2024, 08:57 | 6.83 | 6.83 mg/l |
| 7 Aug 2024, 11:42 | 5.65 | 5.65 mg/l |
| 2 Jul 2024, 13:30 | 7.56 | 7.56 mg/l |
| 3 Jun 2024, 09:03 | 4.92 | 4.92 mg/l |
Water temperature
code 0076 · °C
16.8 °C
Sampled 11 Sep 2026, 20 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 16.8 | 16.8 °C |
| 5 Aug 2026, 11:41 | 19.3 | 19.3 °C |
| 17 Jul 2026, 10:25 | 19 | 19 °C |
| 8 Jun 2026, 09:09 | 14.6 | 14.6 °C |
| 18 May 2026, 11:21 | 10.9 | 10.9 °C |
| 22 Apr 2026, 10:30 | 9 | 9 °C |
| 20 Mar 2026, 14:27 | 9.7 | 9.7 °C |
| 12 Feb 2026, 10:12 | 7 | 7 °C |
| 8 Jan 2026, 09:40 | 3.7 | 3.7 °C |
| 1 Dec 2025, 15:03 | 8.7 | 8.7 °C |
| 7 Nov 2025, 09:46 | 13.7 | 13.7 °C |
| 24 Oct 2025, 09:43 | 10.3 | 10.3 °C |
| 9 Sep 2025, 09:08 | 15 | 15 °C |
| 12 Aug 2025, 09:34 | 18.6 | 18.6 °C |
| 4 Jul 2025, 07:34 | 15.9 | 15.9 °C |
| 10 Jun 2025, 10:33 | 14.9 | 14.9 °C |
| 7 May 2025, 10:35 | 10.5 | 10.5 °C |
| 2 Apr 2025, 12:35 | 9.3 | 9.3 °C |
| 11 Mar 2025, 12:17 | 7.1 | 7.1 °C |
| 10 Feb 2025, 10:22 | 5.2 | 5.2 °C |
| 24 Jan 2025, 11:09 | 6.8 | 6.8 °C |
| 4 Dec 2024, 14:19 | 7.2 | 7.2 °C |
| 5 Nov 2024, 11:09 | 11.6 | 11.6 °C |
| 9 Oct 2024, 09:20 | 13.1 | 13.1 °C |
| 12 Sep 2024, 08:57 | 14.5 | 14.5 °C |
| 7 Aug 2024, 11:42 | 18.6 | 18.6 °C |
| 2 Jul 2024, 13:30 | 14.9 | 14.9 °C |
| 3 Jun 2024, 09:03 | 13.9 | 13.9 °C |
pH
code 0061
7.57
Sampled 11 Sep 2026, 20 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 7.57 | 7.57 |
| 5 Aug 2026, 11:41 | 7.41 | 7.41 |
| 17 Jul 2026, 10:25 | 7.59 | 7.59 |
| 8 Jun 2026, 09:09 | 7.83 | 7.83 |
| 18 May 2026, 11:21 | 7.76 | 7.76 |
| 22 Apr 2026, 10:30 | 7.87 | 7.87 |
| 20 Mar 2026, 14:27 | 8.35 | 8.35 |
| 12 Feb 2026, 10:12 | 8.04 | 8.04 |
| 8 Jan 2026, 09:40 | 7.91 | 7.91 |
| 1 Dec 2025, 15:03 | 7.91 | 7.91 |
| 7 Nov 2025, 09:46 | 7.19 | 7.19 |
| 24 Oct 2025, 09:43 | 7.7 | 7.7 |
| 9 Sep 2025, 09:08 | 7.35 | 7.35 |
| 12 Aug 2025, 09:34 | 7.18 | 7.18 |
| 4 Jul 2025, 07:34 | 7.55 | 7.55 |
| 10 Jun 2025, 10:33 | 7.65 | 7.65 |
| 7 May 2025, 10:35 | 7.75 | 7.75 |
| 2 Apr 2025, 12:35 | 8.02 | 8.02 |
| 11 Mar 2025, 12:17 | 8.32 | 8.32 |
| 10 Feb 2025, 10:22 | 8.14 | 8.14 |
| 24 Jan 2025, 11:09 | 7.98 | 7.98 |
| 4 Dec 2024, 14:19 | 8 | 8 |
| 5 Nov 2024, 11:09 | 7.83 | 7.83 |
| 9 Oct 2024, 09:20 | 7.93 | 7.93 |
| 12 Sep 2024, 08:57 | 7.83 | 7.83 |
| 7 Aug 2024, 11:42 | 7.79 | 7.79 |
| 2 Jul 2024, 13:30 | 7.87 | 7.87 |
| 3 Jun 2024, 09:03 | 7.83 | 7.83 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.69 mg/l
Sampled 11 Sep 2026, 20 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 0.69 | 0.69 mg/l |
| 5 Aug 2026, 11:41 | 2.4 | 2.4 mg/l |
| 17 Jul 2026, 10:25 | 0.9 | 0.9 mg/l |
| 8 Jun 2026, 09:09 | 0.38 | 0.38 mg/l |
| 18 May 2026, 11:21 | 1.7 | 1.7 mg/l |
| 22 Apr 2026, 10:30 | 0.55 | 0.55 mg/l |
| 20 Mar 2026, 14:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Feb 2026, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 09:40 | 0.5 | 0.5 mg/l |
| 1 Dec 2025, 15:03 | 0.11 | 0.11 mg/l |
| 7 Nov 2025, 09:46 | 2.1 | 2.1 mg/l |
| 24 Oct 2025, 09:43 | 1.4 | 1.4 mg/l |
| 9 Sep 2025, 09:08 | 3.4 | 3.4 mg/l |
| 12 Aug 2025, 09:34 | 1.5 | 1.5 mg/l |
| 4 Jul 2025, 07:34 | 2.3 | 2.3 mg/l |
| 10 Jun 2025, 10:33 | 1.3 | 1.3 mg/l |
| 7 May 2025, 10:35 | 0.98 | 0.98 mg/l |
| 11 Mar 2025, 12:17 | 0.082 | 0.082 mg/l |
| 10 Feb 2025, 10:22 | 0.031 | 0.031 mg/l |
| 24 Jan 2025, 11:09 | 0.09 | 0.09 mg/l |
| 4 Dec 2024, 14:19 | 0.098 | 0.098 mg/l |
| 5 Nov 2024, 11:09 | 0.16 | 0.16 mg/l |
| 9 Oct 2024, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Sep 2024, 08:57 | 0.67 | 0.67 mg/l |
| 7 Aug 2024, 11:42 | 0.42 | 0.42 mg/l |
| 2 Jul 2024, 13:30 | 0.67 | 0.67 mg/l |
| 3 Jun 2024, 09:03 | 0.42 | 0.42 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
15.8 mg/l
Sampled 11 Sep 2026, 20 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 15.8 | 15.8 mg/l |
| 5 Aug 2026, 11:41 | 17.5 | 17.5 mg/l |
| 17 Jul 2026, 10:25 | 16.7 | 16.7 mg/l |
| 8 Jun 2026, 09:09 | 9.22 | 9.22 mg/l |
| 18 May 2026, 11:21 | 9.72 | 9.72 mg/l |
| 22 Apr 2026, 10:30 | 9.89 | 9.89 mg/l |
| 20 Mar 2026, 14:27 | 12 | 12 mg/l |
| 12 Feb 2026, 10:12 | 18 | 18 mg/l |
| 8 Jan 2026, 09:40 | 17.9 | 17.9 mg/l |
| 1 Dec 2025, 15:03 | 27.9 | 27.9 mg/l |
| 7 Nov 2025, 09:46 | 23.6 | 23.6 mg/l |
| 24 Oct 2025, 09:43 | 15.7 | 15.7 mg/l |
| 9 Sep 2025, 09:08 | 22.5 | 22.5 mg/l |
| 12 Aug 2025, 09:34 | 17.7 | 17.7 mg/l |
| 4 Jul 2025, 07:34 | 29.5 | 29.5 mg/l |
| 10 Jun 2025, 10:33 | 18.5 | 18.5 mg/l |
| 7 May 2025, 10:35 | 12.7 | 12.7 mg/l |
| 11 Mar 2025, 12:17 | 11 | 11 mg/l |
| 10 Feb 2025, 10:22 | 14 | 14 mg/l |
| 24 Jan 2025, 11:09 | 11 | 11 mg/l |
| 4 Dec 2024, 14:19 | 14 | 14 mg/l |
| 5 Nov 2024, 11:09 | 9.35 | 9.35 mg/l |
| 9 Oct 2024, 09:20 | 18 | 18 mg/l |
| 12 Sep 2024, 08:57 | 13.8 | 13.8 mg/l |
| 7 Aug 2024, 11:42 | 11.8 | 11.8 mg/l |
| 2 Jul 2024, 13:30 | 9.75 | 9.75 mg/l |
| 3 Jun 2024, 09:03 | 8.98 | 8.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
4 mg/l
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 4 | 4 mg/l |
| 17 Jul 2026, 10:25 | 4.7 | 4.7 mg/l |
| 8 Jun 2026, 09:09 | 1.4 | 1.4 mg/l |
| 18 May 2026, 11:21 | 1.3 | 1.3 mg/l |
| 22 Apr 2026, 10:30 | 0.96 | 0.96 mg/l |
| 20 Mar 2026, 14:27 | 0.042 | 0.042 mg/l |
| 12 Feb 2026, 10:12 | 0.13 | 0.13 mg/l |
| 8 Jan 2026, 09:40 | 0.61 | 0.61 mg/l |
| 1 Dec 2025, 15:03 | 0.24 | 0.24 mg/l |
| 7 Nov 2025, 09:46 | 4.9 | 4.9 mg/l |
| 24 Oct 2025, 09:43 | 2.9 | 2.9 mg/l |
| 9 Sep 2025, 09:08 | 5.1 | 5.1 mg/l |
| 12 Aug 2025, 09:34 | 5 | 5 mg/l |
| 4 Jul 2025, 07:34 | 4.9 | 4.9 mg/l |
| 10 Jun 2025, 10:33 | 3.1 | 3.1 mg/l |
| 7 May 2025, 10:35 | 1.9 | 1.9 mg/l |
| 11 Mar 2025, 12:17 | 0.15 | 0.15 mg/l |
| 10 Feb 2025, 10:22 | 0.078 | 0.078 mg/l |
| 24 Jan 2025, 11:09 | 0.33 | 0.33 mg/l |
| 4 Dec 2024, 14:19 | 0.2 | 0.2 mg/l |
| 5 Nov 2024, 11:09 | 0.55 | 0.55 mg/l |
| 9 Oct 2024, 09:20 | 0.1 | 0.1 mg/l |
| 12 Sep 2024, 08:57 | 2.7 | 2.7 mg/l |
| 7 Aug 2024, 11:42 | 2.7 | 2.7 mg/l |
| 2 Jul 2024, 13:30 | 1.3 | 1.3 mg/l |
| 3 Jun 2024, 09:03 | 0.74 | 0.74 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
920 µS/cm
Sampled 11 Sep 2026, 20 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:09 | 920 | 920 µS/cm |
| 5 Aug 2026, 11:41 | 1017 | 1017 µS/cm |
| 17 Jul 2026, 10:25 | 1071 | 1071 µS/cm |
| 8 Jun 2026, 09:09 | 915 | 915 µS/cm |
| 18 May 2026, 11:21 | 1006 | 1006 µS/cm |
| 22 Apr 2026, 10:30 | 983 | 983 µS/cm |
| 20 Mar 2026, 14:27 | 838 | 838 µS/cm |
| 12 Feb 2026, 10:12 | 709 | 709 µS/cm |
| 8 Jan 2026, 09:40 | 987 | 987 µS/cm |
| 1 Dec 2025, 15:03 | 916 | 916 µS/cm |
| 7 Nov 2025, 09:46 | 1033 | 1033 µS/cm |
| 24 Oct 2025, 09:43 | 827 | 827 µS/cm |
| 9 Sep 2025, 09:08 | 1055 | 1055 µS/cm |
| 12 Aug 2025, 09:34 | 959 | 959 µS/cm |
| 4 Jul 2025, 07:34 | 1095 | 1095 µS/cm |
| 10 Jun 2025, 10:33 | 1064 | 1064 µS/cm |
| 7 May 2025, 10:35 | 1003 | 1003 µS/cm |
| 2 Apr 2025, 12:35 | 939 | 939 µS/cm |
| 11 Mar 2025, 12:17 | 932 | 932 µS/cm |
| 10 Feb 2025, 10:22 | 867 | 867 µS/cm |
| 24 Jan 2025, 11:09 | 983 | 983 µS/cm |
| 4 Dec 2024, 14:19 | 889 | 889 µS/cm |
| 5 Nov 2024, 11:09 | 980 | 980 µS/cm |
| 9 Oct 2024, 09:20 | 683 | 683 µS/cm |
| 12 Sep 2024, 08:57 | 1052 | 1052 µS/cm |
| 7 Aug 2024, 11:42 | 1480 | 1480 µS/cm |
| 2 Jul 2024, 13:30 | 1142 | 1142 µS/cm |
| 3 Jun 2024, 09:03 | 985 | 985 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 | 28 | Jun 2024 – Sep 2026 | 61.2% 11 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Jun 2024 – Sep 2026 | 5.92 mg/l 11 Sep 2026 |
| Temperature of Water 0076 | River water | 28 | Jun 2024 – Sep 2026 | 16.8 °C 11 Sep 2026 |
| pH 0061 | River water | 28 | Jun 2024 – Sep 2026 | 7.57 11 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Sep 2026 | 0.69 mg/l 11 Sep 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – Sep 2026 | 15.8 mg/l 11 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Jun 2024 – Sep 2026 | 4 mg/l 11 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Jun 2024 – Sep 2026 | 920 µS/cm 11 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Sep 2026 | 160 mg/l 11 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Sep 2026 | 0.00782 mg/l 11 Sep 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Sep 2026 | 0.25 mg/l 11 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Sep 2026 | 16 mg/l 11 Sep 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.