Sankey Brook Boardmans Lane St Helens
EA name: SANKEY BROOK BOARDMANS LANE ST HELENS
Environment Agency sampling point NW-88002672 · 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
- 1 Sep 2026, 10:4930 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 18 Oct 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 353253, 395879As published, to the nearest 1 m. Open in a map
- River, by its own name
- Sankey Brook
- River, by the map
- Sankey BrookPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Causey Bridge On the Sankey Brook · 8.1 km along the river
- Nearest gauge upstream
- Ellamsbridge Road, St Helens On the Sutton Mill Brook · 3.6 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Environmental monitoring statutory (EU directives) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
69.6%
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 69.6 | 69.6% |
| 7 Jul 2026, 11:47 | 65.4 | 65.4% |
| 16 Jun 2026, 11:51 | 80.2 | 80.2% |
| 1 May 2026, 13:03 | 77.9 | 77.9% |
| 21 Apr 2026, 09:35 | 78.6 | 78.6% |
| 10 Mar 2025, 12:14 | 86.7 | 86.7% |
| 19 Feb 2025, 11:39 | 86.7 | 86.7% |
| 20 Jan 2025, 12:39 | 92.5 | 92.5% |
| 6 Dec 2024, 13:07 | 95.7 | 95.7% |
| 20 Nov 2024, 12:52 | 93.4 | 93.4% |
| 16 Oct 2024, 10:52 | 87.2 | 87.2% |
| 24 Sep 2024, 10:11 | 88.8 | 88.8% |
| 22 Aug 2024, 11:28 | 67.5 | 67.5% |
| 26 Jul 2024, 13:14 | 78.2 | 78.2% |
| 26 Jun 2024, 11:21 | 82.5 | 82.5% |
| 22 May 2024, 11:18 | 77.5 | 77.5% |
| 16 Apr 2024, 10:52 | 91.3 | 91.3% |
| 21 Mar 2024, 09:10 | 93 | 93% |
| 19 Feb 2024, 14:22 | 95.2 | 95.2% |
| 25 Jan 2024, 10:52 | 91.8 | 91.8% |
| 4 Dec 2023, 13:10 | 93 | 93% |
| 20 Nov 2023, 12:37 | 88.5 | 88.5% |
| 18 Oct 2023, 14:30 | 88.9 | 88.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.95 mg/l
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 6.95 | 6.95 mg/l |
| 7 Jul 2026, 11:47 | 6.3 | 6.3 mg/l |
| 16 Jun 2026, 11:51 | 7.98 | 7.98 mg/l |
| 1 May 2026, 13:03 | 8.24 | 8.24 mg/l |
| 21 Apr 2026, 09:35 | 8.87 | 8.87 mg/l |
| 10 Mar 2025, 12:14 | 9.84 | 9.84 mg/l |
| 19 Feb 2025, 11:39 | 11 | 11 mg/l |
| 20 Jan 2025, 12:39 | 11.6 | 11.6 mg/l |
| 6 Dec 2024, 13:07 | 11.3 | 11.3 mg/l |
| 20 Nov 2024, 12:52 | 11.4 | 11.4 mg/l |
| 16 Oct 2024, 10:52 | 9.23 | 9.23 mg/l |
| 24 Sep 2024, 10:11 | 9.17 | 9.17 mg/l |
| 22 Aug 2024, 11:28 | 6.7 | 6.7 mg/l |
| 26 Jul 2024, 13:14 | 7.57 | 7.57 mg/l |
| 26 Jun 2024, 11:21 | 7.84 | 7.84 mg/l |
| 22 May 2024, 11:18 | 7.79 | 7.79 mg/l |
| 16 Apr 2024, 10:52 | 10.4 | 10.4 mg/l |
| 21 Mar 2024, 09:10 | 10.8 | 10.8 mg/l |
| 19 Feb 2024, 14:22 | 11 | 11 mg/l |
| 25 Jan 2024, 10:52 | 11.2 | 11.2 mg/l |
| 4 Dec 2023, 13:10 | 11.5 | 11.5 mg/l |
| 20 Nov 2023, 12:37 | 9.88 | 9.88 mg/l |
| 18 Oct 2023, 14:30 | 9.45 | 9.45 mg/l |
Water temperature
code 0076 · °C
15.3 °C
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 15.3 | 15.3 °C |
| 7 Jul 2026, 11:47 | 17 | 17 °C |
| 16 Jun 2026, 11:51 | 15.5 | 15.5 °C |
| 1 May 2026, 13:03 | 12.7 | 12.7 °C |
| 21 Apr 2026, 09:35 | 9.9 | 9.9 °C |
| 10 Mar 2025, 12:14 | 9.7 | 9.7 °C |
| 19 Feb 2025, 11:39 | 5.2 | 5.2 °C |
| 20 Jan 2025, 12:39 | 5.8 | 5.8 °C |
| 6 Dec 2024, 13:07 | 8.2 | 8.2 °C |
| 20 Nov 2024, 12:52 | 6.7 | 6.7 °C |
| 16 Oct 2024, 10:52 | 12.7 | 12.7 °C |
| 24 Sep 2024, 10:11 | 13.8 | 13.8 °C |
| 22 Aug 2024, 11:28 | 15.6 | 15.6 °C |
| 26 Jul 2024, 13:14 | 16.8 | 16.8 °C |
| 26 Jun 2024, 11:21 | 17.7 | 17.7 °C |
| 22 May 2024, 11:18 | 15 | 15 °C |
| 16 Apr 2024, 10:52 | 9.4 | 9.4 °C |
| 21 Mar 2024, 09:10 | 8.9 | 8.9 °C |
| 19 Feb 2024, 14:22 | 9.1 | 9.1 °C |
| 25 Jan 2024, 10:52 | 6.8 | 6.8 °C |
| 4 Dec 2023, 13:10 | 6.3 | 6.3 °C |
| 20 Nov 2023, 12:37 | 10.4 | 10.4 °C |
| 18 Oct 2023, 14:30 | 12.5 | 12.5 °C |
pH
code 0061
7.69
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 7.69 | 7.69 |
| 7 Jul 2026, 11:47 | 7.84 | 7.84 |
| 16 Jun 2026, 11:51 | 7.85 | 7.85 |
| 1 May 2026, 13:03 | 7.91 | 7.91 |
| 21 Apr 2026, 09:35 | 7.83 | 7.83 |
| 10 Mar 2025, 12:14 | 7.94 | 7.94 |
| 19 Feb 2025, 11:39 | 7.94 | 7.94 |
| 20 Jan 2025, 12:39 | 7.84 | 7.84 |
| 6 Dec 2024, 13:07 | 7.49 | 7.49 |
| 20 Nov 2024, 12:52 | 7.96 | 7.96 |
| 16 Oct 2024, 10:52 | 7.74 | 7.74 |
| 24 Sep 2024, 10:11 | 7.79 | 7.79 |
| 22 Aug 2024, 11:28 | 7.8 | 7.8 |
| 26 Jul 2024, 13:14 | 7.9 | 7.9 |
| 26 Jun 2024, 11:21 | 7.95 | 7.95 |
| 22 May 2024, 11:18 | 7.9 | 7.9 |
| 16 Apr 2024, 10:52 | 8.21 | 8.21 |
| 21 Mar 2024, 09:10 | 7.86 | 7.86 |
| 19 Feb 2024, 14:22 | 7.67 | 7.67 |
| 25 Jan 2024, 10:52 | 7.99 | 7.99 |
| 4 Dec 2023, 13:10 | 7.89 | 7.89 |
| 20 Nov 2023, 12:37 | 7.52 | 7.52 |
| 18 Oct 2023, 14:30 | 7.91 | 7.91 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.15 mg/l
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 0.15 | 0.15 mg/l |
| 7 Jul 2026, 11:47 | 0.087 | 0.087 mg/l |
| 16 Jun 2026, 11:51 | 0.14 | 0.14 mg/l |
| 1 May 2026, 13:03 | 0.19 | 0.19 mg/l |
| 21 Apr 2026, 09:35 | 0.24 | 0.24 mg/l |
| 10 Mar 2025, 12:14 | 0.3 | 0.3 mg/l |
| 19 Feb 2025, 11:39 | 0.43 | 0.43 mg/l |
| 20 Jan 2025, 12:39 | 0.41 | 0.41 mg/l |
| 6 Dec 2024, 13:07 | 0.1 | 0.1 mg/l |
| 20 Nov 2024, 12:52 | 0.16 | 0.16 mg/l |
| 16 Oct 2024, 10:52 | 0.14 | 0.14 mg/l |
| 24 Sep 2024, 10:11 | 0.1 | 0.1 mg/l |
| 22 Aug 2024, 11:28 | 0.14 | 0.14 mg/l |
| 26 Jul 2024, 13:14 | 0.15 | 0.15 mg/l |
| 26 Jun 2024, 11:21 | 0.11 | 0.11 mg/l |
| 22 May 2024, 11:18 | 1.5 | 1.5 mg/l |
| 16 Apr 2024, 10:52 | 0.24 | 0.24 mg/l |
| 21 Mar 2024, 09:10 | 0.24 | 0.24 mg/l |
| 19 Feb 2024, 14:22 | 0.11 | 0.11 mg/l |
| 25 Jan 2024, 10:52 | 0.36 | 0.36 mg/l |
| 4 Dec 2023, 13:10 | 0.29 | 0.29 mg/l |
| 20 Nov 2023, 12:37 | 0.12 | 0.12 mg/l |
| 18 Oct 2023, 14:30 | 0.13 | 0.13 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.63 mg/l
Sampled 1 Sep 2026, 30 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 2.63 | 2.63 mg/l |
| 7 Jul 2026, 11:47 | 1.38 | 1.38 mg/l |
| 16 Jun 2026, 11:51 | 2.2 | 2.2 mg/l |
| 1 May 2026, 13:03 | 2.12 | 2.12 mg/l |
| 21 Apr 2026, 09:35 | 2.14 | 2.14 mg/l |
| 10 Mar 2025, 12:14 | 2.64 | 2.64 mg/l |
| 19 Feb 2025, 11:39 | 2.55 | 2.55 mg/l |
| 20 Jan 2025, 12:39 | 2.96 | 2.96 mg/l |
| 6 Dec 2024, 13:07 | 4.78 | 4.78 mg/l |
| 20 Nov 2024, 12:52 | 4.26 | 4.26 mg/l |
| 16 Oct 2024, 10:52 | 2.34 | 2.34 mg/l |
| 24 Sep 2024, 10:11 | 3.56 | 3.56 mg/l |
| 22 Aug 2024, 11:28 | 1.68 | 1.68 mg/l |
| 26 Jul 2024, 13:14 | 2.22 | 2.22 mg/l |
| 26 Jun 2024, 11:21 | 2 | 2 mg/l |
| 22 May 2024, 11:18 | 1.03 | 1.03 mg/l |
| 16 Apr 2024, 10:52 | 2.27 | 2.27 mg/l |
| 21 Mar 2024, 09:10 | 2.37 | 2.37 mg/l |
| 19 Feb 2024, 14:22 | 2.88 | 2.88 mg/l |
| 4 Dec 2023, 13:10 | 2.26 | 2.26 mg/l |
| 20 Nov 2023, 12:37 | 3.28 | 3.28 mg/l |
| 18 Oct 2023, 14:30 | 3.95 | 3.95 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.1 mg/l
Sampled 1 Sep 2026, 30 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 0.1 | 0.1 mg/l |
| 7 Jul 2026, 11:47 | 0.14 | 0.14 mg/l |
| 16 Jun 2026, 11:51 | 0.13 | 0.13 mg/l |
| 1 May 2026, 13:03 | 0.1 | 0.1 mg/l |
| 21 Apr 2026, 09:35 | 0.11 | 0.11 mg/l |
| 10 Mar 2025, 12:14 | 0.087 | 0.087 mg/l |
| 19 Feb 2025, 11:39 | 0.08 | 0.08 mg/l |
| 20 Jan 2025, 12:39 | 0.095 | 0.095 mg/l |
| 20 Nov 2024, 12:52 | 0.11 | 0.11 mg/l |
| 16 Oct 2024, 10:52 | 0.067 | 0.067 mg/l |
| 24 Sep 2024, 10:11 | 0.12 | 0.12 mg/l |
| 22 Aug 2024, 11:28 | 0.16 | 0.16 mg/l |
| 26 Jul 2024, 13:14 | 0.15 | 0.15 mg/l |
| 26 Jun 2024, 11:21 | 0.16 | 0.16 mg/l |
| 22 May 2024, 11:18 | 0.22 | 0.22 mg/l |
| 16 Apr 2024, 10:52 | 0.12 | 0.12 mg/l |
| 21 Mar 2024, 09:10 | 0.12 | 0.12 mg/l |
| 19 Feb 2024, 14:22 | 0.089 | 0.089 mg/l |
| 25 Jan 2024, 10:52 | 0.12 | 0.12 mg/l |
| 4 Dec 2023, 13:10 | 0.058 | 0.058 mg/l |
| 20 Nov 2023, 12:37 | 0.1 | 0.1 mg/l |
| 18 Oct 2023, 14:30 | 0.11 | 0.11 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
728 µS/cm
Sampled 1 Sep 2026, 30 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:49 | 728 | 728 µS/cm |
| 7 Jul 2026, 11:47 | 1063 | 1063 µS/cm |
| 16 Jun 2026, 11:51 | 1026 | 1026 µS/cm |
| 1 May 2026, 13:03 | 1033 | 1033 µS/cm |
| 21 Apr 2026, 09:35 | 930 | 930 µS/cm |
| 10 Mar 2025, 12:14 | 902 | 902 µS/cm |
| 19 Feb 2025, 11:39 | 934 | 934 µS/cm |
| 20 Jan 2025, 12:39 | 803 | 803 µS/cm |
| 6 Dec 2024, 13:07 | 427 | 427 µS/cm |
| 20 Nov 2024, 12:52 | 592 | 592 µS/cm |
| 16 Oct 2024, 10:52 | 521 | 521 µS/cm |
| 24 Sep 2024, 10:11 | 497 | 497 µS/cm |
| 22 Aug 2024, 11:28 | 974 | 974 µS/cm |
| 26 Jul 2024, 13:14 | 823 | 823 µS/cm |
| 26 Jun 2024, 11:21 | 1021 | 1021 µS/cm |
| 22 May 2024, 11:18 | 346 | 346 µS/cm |
| 16 Apr 2024, 10:52 | 684 | 684 µS/cm |
| 21 Mar 2024, 09:10 | 619 | 619 µS/cm |
| 19 Feb 2024, 14:22 | 483 | 483 µS/cm |
| 25 Jan 2024, 10:52 | 699 | 699 µS/cm |
| 4 Dec 2023, 13:10 | 769 | 769 µS/cm |
| 20 Nov 2023, 12:37 | 498 | 498 µS/cm |
| 18 Oct 2023, 14:30 | 680 | 680 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Sep 2026 | 69.6% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Sep 2026 | 6.95 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Sep 2026 | 15.3 °C 1 Sep 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Sep 2026 | 7.69 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Sep 2026 | 0.15 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Sep 2026 | 2.63 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Sep 2026 | 0.1 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Sep 2026 | 728 µS/cm 1 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – Sep 2026 | 170 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Oct 2023 – Sep 2026 | 0.002 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – Sep 2026 | 1.1 mg/l 1 Sep 2026 |
| Chloride 0172 | River water | 5 | Apr 2026 – Sep 2026 | 47 mg/l 1 Sep 2026 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Sep 2026 | 0.071 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – Sep 2026 | 2.7 mg/l 1 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 5 | Apr 2026 – Sep 2026 | 4.6 mg/l 1 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.