St Martins Stream at Millendreath Beach
EA name: ST MARTINS STREAM AT MILLENDREATH BEACH (also listed as “MILLENDREATH BEACH - STREAM A”)
Environment Agency sampling point SW-81410102 · 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 Sep 2026, 12:0810 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 61 since 1 May 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring) · results completed 25 Sep 2026
- Where
- National Grid 226820, 54120As published, to the nearest 10 m. Open in a map
- River, by its own name
- St Martins Stream
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 1 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Planned investigation (local monitoring) (60 samples)
Unplanned reactive monitoring (pollution incidents) (1 samples)
Results here were completed a median of 4 days after the sample was taken (4 to 10 days, 24 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
94.1%
Sampled 10 Sep 2024, 2.1 years ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2024, 11:49 | 94.1 | 94.1% |
Water temperature
code 0076 · °C
14 °C
Sampled 10 Sep 2024, 2.1 years ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2024, 11:49 | 14 | 14 °C |
pH
code 0061
8.01
Sampled 10 Sep 2024, 2.1 years ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2024, 11:49 | 8.01 | 8.01 |
Conductivity
at 25 °C · code 0077 · µS/cm
383 µS/cm
Sampled 10 Sep 2024, 2.1 years ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2024, 11:49 | 383 | 383 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
510 per 100 ml
Sampled 21 Sep 2026, 10 days ago · 61 results banked
Every result (61)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Sep 2026, 12:08 | 510 | 510 per 100 ml |
| 17 Sep 2026, 14:10 | 2900 | 2900 per 100 ml |
| 9 Sep 2026, 12:55 | 510 | 510 per 100 ml |
| 1 Sep 2026, 15:36 | 600 | 600 per 100 ml |
| 26 Aug 2026, 10:30 | 150 | 150 per 100 ml |
| 20 Aug 2026, 14:01 | 2300 | 2300 per 100 ml |
| 14 Aug 2026, 12:04 | 300 | 300 per 100 ml |
| 5 Aug 2026, 16:12 | 140 | 140 per 100 ml |
| 27 Jul 2026, 10:51 | 140 | 140 per 100 ml |
| 19 Jul 2026, 10:10 | 1000 | 1000 per 100 ml |
| 14 Jul 2026, 12:00 | 480 | 480 per 100 ml |
| 6 Jul 2026, 13:56 | 1100 | 1100 per 100 ml |
| 26 Jun 2026, 12:06 | 2900 | 2900 per 100 ml |
| 20 Jun 2026, 14:00 | 560 | 560 per 100 ml |
| 15 Jun 2026, 12:42 | 3500 | 3500 per 100 ml |
| 10 Jun 2026, 11:01 | 99 | 99 per 100 ml |
| 1 Jun 2026, 13:40 | 2800 | 2800 per 100 ml |
| 26 May 2026, 15:56 | 3300 | 3300 per 100 ml |
| 20 May 2026, 13:04 | 140 | 140 per 100 ml |
| 15 May 2026, 15:05 | 99 | 99 per 100 ml |
| 15 Sep 2025, 13:08 | 1200 | 1200 per 100 ml |
| 11 Sep 2025, 14:05 | 1300 | 1300 per 100 ml |
| 5 Sep 2025, 12:55 | 560 | 560 per 100 ml |
| 31 Aug 2025, 13:11 | 2500 | 2500 per 100 ml |
| 18 Aug 2025, 12:50 | 630 | 630 per 100 ml |
| 13 Aug 2025, 13:34 | 1900 | 1900 per 100 ml |
| 6 Aug 2025, 13:25 | 390 | 390 per 100 ml |
| 28 Jul 2025, 10:47 | 2600 | 2600 per 100 ml |
| 22 Jul 2025, 10:55 | 1700 | 1700 per 100 ml |
| 16 Jul 2025, 14:11 | 290 | 290 per 100 ml |
| 10 Jul 2025, 11:22 | 2200 | 2200 per 100 ml |
| 1 Jul 2025, 13:58 | 1700 | 1700 per 100 ml |
| 25 Jun 2025, 13:25 | 690 | 690 per 100 ml |
| 16 Jun 2025, 13:15 | 500 | 500 per 100 ml |
| 10 Jun 2025, 10:31 | 680 | 680 per 100 ml |
| 5 Jun 2025, 10:12 | 4200 | 4200 per 100 ml |
| 30 May 2025, 14:15 | 300 | 300 per 100 ml |
| 25 May 2025, 14:20 | 410 | 410 per 100 ml |
| 16 May 2025, 13:41 | 270 | 270 per 100 ml |
| 1 May 2025, 15:00 | 1100 | 1100 per 100 ml |
| 20 Sep 2024, 12:49 | 230 | 230 per 100 ml |
| 10 Sep 2024, 11:49 | 450 | 450 per 100 ml |
| 7 Sep 2024, 14:10 | 340 | 340 per 100 ml |
| 3 Sep 2024, 12:06 | 800 | 800 per 100 ml |
| 27 Aug 2024, 10:42 | 760 | 760 per 100 ml |
| 20 Aug 2024, 14:30 | 1200 | 1200 per 100 ml |
| 14 Aug 2024, 13:14 | 500 | 500 per 100 ml |
| 7 Aug 2024, 13:33 | 1100 | 1100 per 100 ml |
| 31 Jul 2024, 13:54 | 1300 | 1300 per 100 ml |
| 25 Jul 2024, 13:12 | 2600 | 2600 per 100 ml |
| 16 Jul 2024, 12:40 | 340 | 340 per 100 ml |
| 8 Jul 2024, 12:19 | 1800 | 1800 per 100 ml |
| 4 Jul 2024, 11:01 | 1100 | 1100 per 100 ml |
| 26 Jun 2024, 13:19 | 2400 | 2400 per 100 ml |
| 16 Jun 2024, 10:19 | 46000 | 46000 per 100 ml |
| 10 Jun 2024, 12:22 | 1900 | 1900 per 100 ml |
| 4 Jun 2024, 12:15 | 960 | 960 per 100 ml |
| 31 May 2024, 10:03 | 5900 | 5900 per 100 ml |
| 27 May 2024, 14:19 | 89000 | 89000 per 100 ml |
| 16 May 2024, 13:01 | 190 | 190 per 100 ml |
| 1 May 2024, 15:55 | 780 | 780 per 100 ml |
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 | 1 | Sep 2024 – Sep 2024 | 94.1% 10 Sep 2024 |
| Temperature of Water 0076 | River water | 1 | Sep 2024 – Sep 2024 | 14 °C 10 Sep 2024 |
| pH 0061 | River water | 1 | Sep 2024 – Sep 2024 | 8.01 10 Sep 2024 |
| Conductivity at 25 C 0077 | River water | 1 | Sep 2024 – Sep 2024 | 383 µS/cm 10 Sep 2024 |
| Escherichia coli : Confirmed : MF 2348 | River water | 61 | May 2024 – Sep 2026 | 510 per 100 ml 21 Sep 2026 |
| Bacteroides HF183 primer 5886 | River water | 2 | May 2024 – Jun 2024 | Present / 100ml 16 Jun 2024 |
| Bacteroidetes Marker : Human copy number 3820 | River water | 2 | May 2024 – Jun 2024 | 5.7 log (10) gene copies / 100ml 16 Jun 2024 |
| Bacteroidetes Marker : Ruminant 4906 | River water | 2 | May 2024 – Jun 2024 | Not found in test 16 Jun 2024 |
| Bacteroidetes Marker : Ruminant copy number 3819 | River water | 2 | May 2024 – Jun 2024 | below 2 log (10) gene copies / 100ml 16 Jun 2024 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 61 | May 2024 – Sep 2026 | 570 colony forming units / 100ml 21 Sep 2026 |
| Microbial Source Tracking 4876 | River water | 2 | May 2024 – Jun 2024 | 1 text result 16 Jun 2024 |
| MST Filtration 4926 | River water | 61 | May 2024 – Sep 2026 | DNA Stored 21 Sep 2026 |
| Preparation: DNA 5923 | River water | 2 | May 2024 – Jun 2024 | Done 16 Jun 2024 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 1 | Sep 2024 – Sep 2024 | Not found 10 Sep 2024 |
| Volume of Sample Filtered 4865 | River water | 61 | May 2024 – Sep 2026 | 900 millilitre 21 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.