River Lew Immediately upstream of Pulworthy Brook
EA name: R.LEW IMMEDIATELY U/S OF PULWORTHY BK (also listed as “R.LEW IMMEDIATELY UPSTREAM OF CONFLUENCE WITH PULWORTHY BROOK”)
Environment Agency sampling point SW-72930806 · 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
- 2 Sep 2026, 10:2736 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 8 since 10 Nov 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 253236, 105071As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lew
- River, by the map
- River LewPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Dolton On the River Torridge · 8.7 km along the river
- Nearest gauge upstream
- Gribbleford Bridge On the River Lew · 6.4 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (6 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
87.2%
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 87.2 | 87.2% |
| 14 Aug 2026, 09:13 | 73 | 73% |
| 14 Jul 2026, 14:57 | 116.1 | 116.1% |
| 18 Jun 2026, 14:50 | 97.5 | 97.5% |
| 7 May 2026, 12:14 | 101 | 101% |
| 20 Apr 2026, 10:33 | 98.8 | 98.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.51 mg/l
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 8.51 | 8.51 mg/l |
| 14 Aug 2026, 09:13 | 6.61 | 6.61 mg/l |
| 14 Jul 2026, 14:57 | 9.96 | 9.96 mg/l |
| 18 Jun 2026, 14:50 | 9.24 | 9.24 mg/l |
| 7 May 2026, 12:14 | 10.8 | 10.8 mg/l |
| 20 Apr 2026, 10:33 | 11.1 | 11.1 mg/l |
Water temperature
code 0076 · °C
16.4 °C
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 16.4 | 16.4 °C |
| 14 Aug 2026, 09:13 | 20.1 | 20.1 °C |
| 14 Jul 2026, 14:57 | 22.9 | 22.9 °C |
| 18 Jun 2026, 14:50 | 17.8 | 17.8 °C |
| 7 May 2026, 12:14 | 12.4 | 12.4 °C |
| 20 Apr 2026, 10:33 | 10 | 10 °C |
pH
code 0061
7.4
Sampled 2 Sep 2026, 36 days ago · 8 results banked
Every result (8)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 7.4 | 7.4 |
| 14 Aug 2026, 09:13 | 7.32 | 7.32 |
| 14 Jul 2026, 14:57 | 8.02 | 8.02 |
| 18 Jun 2026, 14:50 | 7.56 | 7.56 |
| 7 May 2026, 12:14 | 7.75 | 7.75 |
| 20 Apr 2026, 10:33 | 7.51 | 7.51 |
| 11 Jan 2024, 10:22 | 7.28 | 7.28 |
| 10 Nov 2023, 14:43 | 7.32 | 7.32 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.043 mg/l
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 0.043 | 0.043 mg/l |
| 14 Aug 2026, 09:13 | 0.065 | 0.065 mg/l |
| 14 Jul 2026, 14:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2026, 14:50 | 0.055 | 0.055 mg/l |
| 7 May 2026, 12:14 | 0.047 | 0.047 mg/l |
| 20 Apr 2026, 10:33 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.87 mg/l
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 1.87 | 1.87 mg/l |
| 14 Aug 2026, 09:13 | 5.55 | 5.55 mg/l |
| 14 Jul 2026, 14:57 | 3.04 | 3.04 mg/l |
| 18 Jun 2026, 14:50 | 1.28 | 1.28 mg/l |
| 7 May 2026, 12:14 | 0.988 | 0.988 mg/l |
| 20 Apr 2026, 10:33 | 0.995 | 0.995 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 0.18 | 0.18 mg/l |
| 14 Aug 2026, 09:13 | 0.46 | 0.46 mg/l |
| 14 Jul 2026, 14:57 | 0.35 | 0.35 mg/l |
| 18 Jun 2026, 14:50 | 0.11 | 0.11 mg/l |
| 7 May 2026, 12:14 | 0.083 | 0.083 mg/l |
| 20 Apr 2026, 10:33 | 0.058 | 0.058 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
294 µS/cm
Sampled 2 Sep 2026, 36 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 10:27 | 294 | 294 µS/cm |
| 14 Aug 2026, 09:13 | 660 | 660 µS/cm |
| 14 Jul 2026, 14:57 | 314 | 314 µS/cm |
| 18 Jun 2026, 14:50 | 209 | 209 µS/cm |
| 7 May 2026, 12:14 | 190 | 190 µS/cm |
| 20 Apr 2026, 10:33 | 162 | 162 µS/cm |
Everything measured here
18 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 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 6 | Apr 2026 – Sep 2026 | 87.2% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 6 | Apr 2026 – Sep 2026 | 8.51 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 6 | Apr 2026 – Sep 2026 | 16.4 °C 2 Sep 2026 |
| pH 0061 | River water | 8 | Nov 2023 – Sep 2026 | 7.4 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Apr 2026 – Sep 2026 | 0.043 mg/l 2 Sep 2026 |
| Nitrate as N 0117 | River water | 6 | Apr 2026 – Sep 2026 | 1.87 mg/l 2 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 6 | Apr 2026 – Sep 2026 | 0.18 mg/l 2 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 6 | Apr 2026 – Sep 2026 | 294 µS/cm 2 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 6 | Apr 2026 – Sep 2026 | 51 mg/l 2 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 6 | Apr 2026 – Sep 2026 | 0.00032 mg/l 2 Sep 2026 |
| Calcium 0241 | River water | 2 | Nov 2023 – Jan 2024 | 11 mg/l 11 Jan 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Nov 2023 – Jan 2024 | 3.2 mg/l 11 Jan 2024 |
| Hardness, Total as CaCO3 0158 | River water | 2 | Nov 2023 – Jan 2024 | 40.6 mg/l 11 Jan 2024 |
| Magnesium 0237 | River water | 2 | Nov 2023 – Jan 2024 | 3.2 mg/l 11 Jan 2024 |
| Nitrite as N 0118 | River water | 6 | Apr 2026 – Sep 2026 | 0.028 mg/l 2 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Apr 2026 – Sep 2026 | 1.9 mg/l 2 Sep 2026 |
| Zinc 6455 | River water | 2 | Nov 2023 – Jan 2024 | below 5 µg/l 11 Jan 2024 |
| Zinc, Dissolved 3408 | River water | 2 | Nov 2023 – Jan 2024 | 3.8 µg/l 11 Jan 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.