Porth Stream at Beach
EA name: PORTH STREAM AT BEACH
Environment Agency sampling point SW-82510102 · 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
- 15 Sep 2026, 11:5916 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 60 since 5 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)
- Where
- National Grid 183250, 62880As published, to the nearest 10 m. Open in a map
- River, by its own name
- Porth Stream
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 7 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)
Main measurements, river water
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
2300 per 100 ml
Sampled 15 Sep 2026, 16 days ago · 58 results banked
Every result (58)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 11:59 | 2300 | 2300 per 100 ml |
| 10 Sep 2026, 14:03 | 1100 | 1100 per 100 ml |
| 5 Sep 2026, 12:15 | 900 | 900 per 100 ml |
| 28 Aug 2026, 10:25 | 1300 | 1300 per 100 ml |
| 17 Aug 2026, 10:15 | 550 | 550 per 100 ml |
| 12 Aug 2026, 10:20 | 720 | 720 per 100 ml |
| 7 Aug 2026, 10:20 | 490 | 490 per 100 ml |
| 26 Jul 2026, 10:50 | 1500 | 1500 per 100 ml |
| 21 Jul 2026, 12:42 | 450 | 450 per 100 ml |
| 17 Jul 2026, 13:34 | 710 | 710 per 100 ml |
| 8 Jul 2026, 10:10 | 750 | 750 per 100 ml |
| 1 Jul 2026, 12:20 | 580 | 580 per 100 ml |
| 22 Jun 2026, 11:31 | 460 | 460 per 100 ml |
| 17 Jun 2026, 15:09 | 1500 | 1500 per 100 ml |
| 11 Jun 2026, 12:38 | 1000 | 1000 per 100 ml |
| 3 Jun 2026, 10:15 | 610 | 610 per 100 ml |
| 29 May 2026, 11:09 | 660 | 660 per 100 ml |
| 22 May 2026, 10:16 | 1300 | 1300 per 100 ml |
| 17 May 2026, 10:35 | 140 | 140 per 100 ml |
| 19 Sep 2025, 14:50 | 280 | 280 per 100 ml |
| 14 Sep 2025, 10:15 | 370 | 370 per 100 ml |
| 2 Sep 2025, 13:30 | 1100 | 1100 per 100 ml |
| 27 Aug 2025, 16:10 | 1300 | 1300 per 100 ml |
| 20 Aug 2025, 10:20 | 880 | 880 per 100 ml |
| 14 Aug 2025, 15:38 | 1800 | 1800 per 100 ml |
| 8 Aug 2025, 14:40 | 610 | 610 per 100 ml |
| 1 Aug 2025, 15:40 | 3100 | 3100 per 100 ml |
| 25 Jul 2025, 14:50 | 550 | 550 per 100 ml |
| 7 Jul 2025, 13:25 | 1500 | 1500 per 100 ml |
| 3 Jul 2025, 10:16 | 480 | 480 per 100 ml |
| 26 Jun 2025, 14:56 | 680 | 680 per 100 ml |
| 20 Jun 2025, 15:07 | 260 | 260 per 100 ml |
| 12 Jun 2025, 10:15 | 7200 | 7200 per 100 ml |
| 3 Jun 2025, 10:23 | 4900 | 4900 per 100 ml |
| 27 May 2025, 14:34 | 6700 | 6700 per 100 ml |
| 21 May 2025, 10:18 | 490 | 490 per 100 ml |
| 18 May 2025, 13:57 | 160 | 160 per 100 ml |
| 6 May 2025, 10:41 | 110 | 110 per 100 ml |
| 17 Sep 2024, 13:41 | 350 | 350 per 100 ml |
| 11 Sep 2024, 11:30 | 520 | 520 per 100 ml |
| 5 Sep 2024, 15:00 | 2400 | 2400 per 100 ml |
| 30 Aug 2024, 13:48 | 690 | 690 per 100 ml |
| 19 Aug 2024, 13:49 | 580 | 580 per 100 ml |
| 10 Aug 2024, 10:05 | 1100 | 1100 per 100 ml |
| 5 Aug 2024, 11:05 | 560 | 560 per 100 ml |
| 1 Aug 2024, 10:56 | 730 | 730 per 100 ml |
| 23 Jul 2024, 10:43 | 470 | 470 per 100 ml |
| 15 Jul 2024, 10:25 | 16000 | 16000 per 100 ml |
| 10 Jul 2024, 10:15 | 280 | 280 per 100 ml |
| 7 Jul 2024, 10:40 | 6700 | 6700 per 100 ml |
| 25 Jun 2024, 13:15 | 240 | 240 per 100 ml |
| 19 Jun 2024, 12:56 | 220 | 220 per 100 ml |
| 13 Jun 2024, 11:24 | 590 | 590 per 100 ml |
| 3 Jun 2024, 10:13 | 290 | 290 per 100 ml |
| 29 May 2024, 13:00 | 140 | 140 per 100 ml |
| 23 May 2024, 11:32 | 72 | 72 per 100 ml |
| 18 May 2024, 10:23 | 200 | 200 per 100 ml |
| 5 May 2024, 10:31 | 120 | 120 per 100 ml |
Everything measured here
17 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 17 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Escherichia coli : Confirmed : MF 2348 | River water | 58 | May 2024 – Sep 2026 | 2300 per 100 ml 15 Sep 2026 |
| Bacteroides HF183 primer 5886 | River water | 3 | Jul 2024 – Jun 2025 | Present / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Horse 3122 | River water | 2 | May 2025 – Jun 2025 | Present 12 Jun 2025 |
| Bacteroidetes Marker : Horse Copy Number 3123 | River water | 2 | May 2025 – Jun 2025 | 2.6 log (10) gene copies / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Human copy number 3820 | River water | 3 | Jul 2024 – Jun 2025 | 4.8 log (10) gene copies / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Ruminant 4906 | River water | 3 | Jul 2024 – Jun 2025 | Present 12 Jun 2025 |
| Bacteroidetes Marker : Ruminant copy number 3819 | River water | 3 | Jul 2024 – Jun 2025 | 5.3 log (10) gene copies / 100ml 12 Jun 2025 |
| Catellicoccus Marker : Seabird 3120 | River water | 2 | May 2025 – Jun 2025 | Present 12 Jun 2025 |
| Catellicoccus Marker : Seabird Copy Number 3116 | River water | 2 | May 2025 – Jun 2025 | 3.7 log (10) gene copies / 100ml 12 Jun 2025 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 58 | May 2024 – Sep 2026 | 830 colony forming units / 100ml 15 Sep 2026 |
| Microbial Source Tracking 4876 | River water | 3 | Jul 2024 – Jun 2025 | 1 text result 12 Jun 2025 |
| Mitochondrial Marker : Canine 4870 | River water | 3 | Jul 2024 – Jun 2025 | Not found 12 Jun 2025 |
| Mitochrondrial Marker: Canine copy number 3816 | River water | 3 | Jul 2024 – Jun 2025 | below 2 log (10) gene copies / 100ml 12 Jun 2025 |
| MST Filtration 4926 | River water | 59 | May 2024 – Sep 2026 | DNA Stored 15 Sep 2026 |
| Preparation: DNA 5923 | River water | 3 | Jul 2024 – Jun 2025 | Done 12 Jun 2025 |
| Salinity : In Situ 7608 | River water | 60 | May 2024 – Sep 2026 | 0.27 parts per thousand 15 Sep 2026 |
| Volume of Sample Filtered 4865 | River water | 59 | May 2024 – Sep 2026 | 700 millilitre 15 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.