Lambourn downstream of East Shefford sewage treatment works
EA name: LAMBOURN D/S EAST SHEFFORD STW (also listed as “LAMBOURN DOWNSTREAM EAST SHEFFORD STW”)
Environment Agency sampling point TH-PKER0340 · 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
- 21 Jul 2026, 12:463 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 10 since 2 Oct 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 439751, 174008As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lambourn
- River, by the map
- River LambournPlaced on the river its name gives, 19 m from the line.
- Next gauge downstream
- Shaw On the River Lambourn · 12 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Eastbury Flood Control Structure On the River Lambourn · 8.2 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (10 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.9%
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 99.9 | 99.9% |
| 9 Apr 2026, 12:34 | 105.4 | 105.4% |
| 2 Jan 2026, 11:50 | 95.8 | 95.8% |
| 2 Oct 2025, 08:57 | 92.7 | 92.7% |
| 23 Apr 2025, 14:35 | 104.7 | 104.7% |
| 28 Jan 2025, 12:16 | 94.8 | 94.8% |
| 7 Oct 2024, 10:27 | 91.4 | 91.4% |
| 3 Jul 2024, 11:52 | 101.5 | 101.5% |
| 10 Jan 2024, 11:08 | 94 | 94% |
| 2 Oct 2023, 13:47 | 91.2 | 91.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.3 mg/l
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 10.3 | 10.3 mg/l |
| 9 Apr 2026, 12:34 | 11.3 | 11.3 mg/l |
| 2 Jan 2026, 11:50 | 11.5 | 11.5 mg/l |
| 2 Oct 2025, 08:57 | 10.2 | 10.2 mg/l |
| 23 Apr 2025, 14:35 | 11.5 | 11.5 mg/l |
| 28 Jan 2025, 12:16 | 10.8 | 10.8 mg/l |
| 7 Oct 2024, 10:27 | 9.99 | 9.99 mg/l |
| 3 Jul 2024, 11:52 | 10.9 | 10.9 mg/l |
| 10 Jan 2024, 11:08 | 11.4 | 11.4 mg/l |
| 2 Oct 2023, 13:47 | 9.7 | 9.7 mg/l |
Water temperature
code 0076 · °C
13.7 °C
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 13.7 | 13.7 °C |
| 9 Apr 2026, 12:34 | 12 | 12 °C |
| 2 Jan 2026, 11:50 | 7.3 | 7.3 °C |
| 2 Oct 2025, 08:57 | 10.9 | 10.9 °C |
| 23 Apr 2025, 14:35 | 10.9 | 10.9 °C |
| 28 Jan 2025, 12:16 | 9.6 | 9.6 °C |
| 7 Oct 2024, 10:27 | 11.3 | 11.3 °C |
| 3 Jul 2024, 11:52 | 12 | 12 °C |
| 10 Jan 2024, 11:08 | 7 | 7 °C |
| 2 Oct 2023, 13:47 | 12.5 | 12.5 °C |
pH
code 0061
7.67
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 7.67 | 7.67 |
| 9 Apr 2026, 12:34 | 7.75 | 7.75 |
| 2 Jan 2026, 11:50 | 7.92 | 7.92 |
| 2 Oct 2025, 08:57 | 7.78 | 7.78 |
| 23 Apr 2025, 14:35 | 7.97 | 7.97 |
| 28 Jan 2025, 12:16 | 7.69 | 7.69 |
| 7 Oct 2024, 10:27 | 7.58 | 7.58 |
| 3 Jul 2024, 11:52 | 7.8 | 7.8 |
| 10 Jan 2024, 11:08 | 7.82 | 7.82 |
| 2 Oct 2023, 13:47 | 7.58 | 7.58 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2026, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jan 2026, 11:50 | 0.069 | 0.069 mg/l |
| 2 Oct 2025, 08:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Apr 2025, 14:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jan 2025, 12:16 | 0.035 | 0.035 mg/l |
| 7 Oct 2024, 10:27 | 0.078 | 0.078 mg/l |
| 3 Jul 2024, 11:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jan 2024, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2023, 13:47 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.39 mg/l
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 9.39 | 9.39 mg/l |
| 9 Apr 2026, 12:34 | 9.19 | 9.19 mg/l |
| 2 Jan 2026, 11:50 | 9.78 | 9.78 mg/l |
| 2 Oct 2025, 08:57 | 9.28 | 9.28 mg/l |
| 23 Apr 2025, 14:35 | 9.4 | 9.4 mg/l |
| 28 Jan 2025, 12:16 | 8.99 | 8.99 mg/l |
| 7 Oct 2024, 10:27 | 8.88 | 8.88 mg/l |
| 3 Jul 2024, 11:52 | 8.99 | 8.99 mg/l |
| 10 Jan 2024, 11:08 | 8.59 | 8.59 mg/l |
| 2 Oct 2023, 13:47 | 8.68 | 8.68 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.043 mg/l
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 0.043 | 0.043 mg/l |
| 9 Apr 2026, 12:34 | 0.05 | 0.05 mg/l |
| 2 Jan 2026, 11:50 | 0.034 | 0.034 mg/l |
| 2 Oct 2025, 08:57 | 0.03 | 0.03 mg/l |
| 23 Apr 2025, 14:35 | 0.035 | 0.035 mg/l |
| 28 Jan 2025, 12:16 | 0.057 | 0.057 mg/l |
| 7 Oct 2024, 10:27 | 0.032 | 0.032 mg/l |
| 3 Jul 2024, 11:52 | 0.046 | 0.046 mg/l |
| 10 Jan 2024, 11:08 | 0.1 | 0.1 mg/l |
| 2 Oct 2023, 13:47 | 0.039 | 0.039 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
566 µS/cm
Sampled 21 Jul 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Jul 2026, 12:46 | 566 | 566 µS/cm |
| 9 Apr 2026, 12:34 | 577 | 577 µS/cm |
| 2 Jan 2026, 11:50 | 572 | 572 µS/cm |
| 2 Oct 2025, 08:57 | 568 | 568 µS/cm |
| 23 Apr 2025, 14:35 | 585 | 585 µS/cm |
| 28 Jan 2025, 12:16 | 554 | 554 µS/cm |
| 7 Oct 2024, 10:27 | 567 | 567 µS/cm |
| 3 Jul 2024, 11:52 | 572 | 572 µS/cm |
| 10 Jan 2024, 11:08 | 595 | 595 µS/cm |
| 2 Oct 2023, 13:47 | 564 | 564 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 | 10 | Oct 2023 – Jul 2026 | 99.9% 21 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Oct 2023 – Jul 2026 | 10.3 mg/l 21 Jul 2026 |
| Temperature of Water 0076 | River water | 10 | Oct 2023 – Jul 2026 | 13.7 °C 21 Jul 2026 |
| pH 0061 | River water | 10 | Oct 2023 – Jul 2026 | 7.67 21 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 10 | Oct 2023 – Jul 2026 | below 0.03 mg/l 21 Jul 2026 |
| Nitrate as N 0117 | River water | 10 | Oct 2023 – Jul 2026 | 9.39 mg/l 21 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 10 | Oct 2023 – Jul 2026 | 0.043 mg/l 21 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 10 | Oct 2023 – Jul 2026 | 566 µS/cm 21 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 10 | Oct 2023 – Jul 2026 | 230 mg/l 21 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 10 | Oct 2023 – Jul 2026 | below 0.00034 mg/l 21 Jul 2026 |
| Nitrite as N 0118 | River water | 10 | Oct 2023 – Jul 2026 | 0.0066 mg/l 21 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 10 | Oct 2023 – Jul 2026 | 9.4 mg/l 21 Jul 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.