Primrose Valley Stream at Porthminster
EA name: PRIMROSE VALLEY STREAM AT PORTHMINSTER (also listed as “PRIMROSE VALLEY STREAM AT PORTHMINSTER BEACH”)
Environment Agency sampling point SW-82211590 · 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
- 18 Sep 2026, 10:5313 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 60 since 4 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 22 Sep 2026
- Where
- National Grid 152217, 39971As published, to the nearest 1 m. Open in a map
- River, by its own name
- Primrose Valley Stream
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Planned investigation (local monitoring) (59 samples)
Statutory failures (follow ups at non-designated points) (1 samples)
Results here were completed a median of 4 days after the sample was taken (4 to 106 days, 23 samples).
Main measurements, river water
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
9900 per 100 ml
Sampled 18 Sep 2026, 13 days ago · 58 results banked
Every result (58)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:53 | 9900 | 9900 per 100 ml |
| 8 Sep 2026, 13:31 | 1400 | 1400 per 100 ml |
| 2 Sep 2026, 11:25 | 30000 | 30000 per 100 ml |
| 27 Aug 2026, 13:48 | 58000 | 58000 per 100 ml |
| 21 Aug 2026, 13:04 | 11000 | 11000 per 100 ml |
| 13 Aug 2026, 13:49 | 6600 | 6600 per 100 ml |
| 4 Aug 2026, 12:30 | >100000 | above 100000 per 100 ml (the most the test can count) |
| 30 Jul 2026, 12:34 | 280000 | 280000 per 100 ml |
| 22 Jul 2026, 12:20 | >100000 | above 100000 per 100 ml (the most the test can count) |
| 13 Jul 2026, 11:35 | 2200 | 2200 per 100 ml |
| 9 Jul 2026, 12:30 | 12000 | 12000 per 100 ml |
| 4 Jul 2026, 11:04 | 2700 | 2700 per 100 ml |
| 29 Jun 2026, 13:35 | 6300 | 6300 per 100 ml |
| 23 Jun 2026, 14:36 | 6600 | 6600 per 100 ml |
| 11 Jun 2026, 12:02 | 29000 | 29000 per 100 ml |
| 4 Jun 2026, 13:20 | 10000 | 10000 per 100 ml |
| 29 May 2026, 11:49 | 56000 | 56000 per 100 ml |
| 23 May 2026, 10:35 | 9600 | 9600 per 100 ml |
| 18 May 2026, 12:16 | 7500 | 7500 per 100 ml |
| 16 Sep 2025, 13:21 | 700 | 700 per 100 ml |
| 13 Sep 2025, 10:06 | >100000 | above 100000 per 100 ml (the most the test can count) |
| 1 Sep 2025, 11:26 | 32000 | 32000 per 100 ml |
| 29 Aug 2025, 11:26 | 25000 | 25000 per 100 ml |
| 21 Aug 2025, 11:24 | 14000 | 14000 per 100 ml |
| 11 Aug 2025, 11:13 | 10000 | 10000 per 100 ml |
| 7 Aug 2025, 11:42 | 25000 | 25000 per 100 ml |
| 30 Jul 2025, 10:47 | 65000 | 65000 per 100 ml |
| 24 Jul 2025, 11:20 | 12000 | 12000 per 100 ml |
| 9 Jul 2025, 11:07 | 2300 | 2300 per 100 ml |
| 30 Jun 2025, 10:40 | 8800 | 8800 per 100 ml |
| 23 Jun 2025, 11:21 | 23000 | 23000 per 100 ml |
| 17 Jun 2025, 12:01 | 2300 | 2300 per 100 ml |
| 11 Jun 2025, 11:35 | 12000 | 12000 per 100 ml |
| 6 Jun 2025, 13:04 | 830 | 830 per 100 ml |
| 29 May 2025, 12:04 | 1600 | 1600 per 100 ml |
| 23 May 2025, 10:53 | 370 | 370 per 100 ml |
| 20 May 2025, 11:27 | 460 | 460 per 100 ml |
| 4 May 2025, 10:49 | 20000 | 20000 per 100 ml |
| 18 Sep 2024, 11:03 | 4000 | 4000 per 100 ml |
| 13 Sep 2024, 11:18 | 3800 | 3800 per 100 ml |
| 5 Sep 2024, 13:42 | 9000 | 9000 per 100 ml |
| 31 Aug 2024, 11:20 | 10000 | 10000 per 100 ml |
| 22 Aug 2024, 13:45 | 83000 | 83000 per 100 ml |
| 16 Aug 2024, 10:37 | 12000 | 12000 per 100 ml |
| 9 Aug 2024, 13:54 | 8400 | 8400 per 100 ml |
| 4 Aug 2024, 10:58 | 14000 | 14000 per 100 ml |
| 24 Jul 2024, 10:08 | 17000 | 17000 per 100 ml |
| 17 Jul 2024, 11:04 | 4500 | 4500 per 100 ml |
| 9 Jul 2024, 14:42 | 2300 | 2300 per 100 ml |
| 5 Jul 2024, 11:30 | 7900 | 7900 per 100 ml |
| 27 Jun 2024, 12:26 | 6200 | 6200 per 100 ml |
| 20 Jun 2024, 13:19 | 680 | 680 per 100 ml |
| 12 Jun 2024, 10:30 | 3000 | 3000 per 100 ml |
| 5 Jun 2024, 10:56 | 4400 | 4400 per 100 ml |
| 30 May 2024, 10:02 | 5700 | 5700 per 100 ml |
| 24 May 2024, 11:06 | 1000 | 1000 per 100 ml |
| 20 May 2024, 11:00 | 4400 | 4400 per 100 ml |
| 4 May 2024, 11:31 | 4000 | 4000 per 100 ml |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Escherichia coli : Confirmed : MF 2348 | River water | 58 | May 2024 – Sep 2026 | 9900 per 100 ml 18 Sep 2026 |
| Bacteroides HF183 primer 5886 | River water | 9 | May 2025 – Jul 2026 | Present / 100ml 9 Jul 2026 |
| Bacteroidetes Marker : Human copy number 3820 | River water | 9 | May 2025 – Jul 2026 | 5.8 log (10) gene copies / 100ml 9 Jul 2026 |
| Bacteroidetes Marker : Ruminant 4906 | River water | 9 | May 2025 – Jul 2026 | Not found in test 9 Jul 2026 |
| Bacteroidetes Marker : Ruminant copy number 3819 | River water | 9 | May 2025 – Jul 2026 | below 2 log (10) gene copies / 100ml 9 Jul 2026 |
| Catellicoccus Marker : Seabird 3120 | River water | 9 | May 2025 – Jul 2026 | Present 9 Jul 2026 |
| Catellicoccus Marker : Seabird Copy Number 3116 | River water | 9 | May 2025 – Jul 2026 | 2.1 log (10) gene copies / 100ml 9 Jul 2026 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 57 | May 2024 – Sep 2026 | 1400 colony forming units / 100ml 18 Sep 2026 |
| Microbial Source Tracking 4876 | River water | 9 | May 2025 – Jul 2026 | 1 text result 9 Jul 2026 |
| Mitochondrial Marker : Canine 4870 | River water | 9 | May 2025 – Jul 2026 | Present 9 Jul 2026 |
| Mitochrondrial Marker: Canine copy number 3816 | River water | 9 | May 2025 – Jul 2026 | below 2 log (10) gene copies / 100ml 9 Jul 2026 |
| MST Filtration 4926 | River water | 59 | May 2024 – Sep 2026 | DNA Stored 18 Sep 2026 |
| Preparation: DNA 5923 | River water | 9 | May 2025 – Jul 2026 | Done 9 Jul 2026 |
| Volume of Sample Filtered 4865 | River water | 59 | May 2024 – Sep 2026 | 850 millilitre 18 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.