St Agnes Stream Prior to Culvert
EA name: ST AGNES STREAM PRIOR TO CULVERT (also listed as “ST AGNES STREAM PRIOR TO CULVERT ST AGNES”)
Environment Agency sampling point SW-82311611 · 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 Jul 2026, 13:353 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 45 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 Unplanned reactive monitoring (pollution incidents)
- Where
- National Grid 172101, 51374As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- 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) (40 samples)
Unplanned reactive monitoring (pollution incidents) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.5%
Sampled 15 Jul 2026, 3 months ago · 2 results banked
Every result (2)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 13:35 | 98.5 | 98.5% |
| 24 Jun 2026, 10:45 | 99.5 | 99.5% |
Water temperature
code 0076 · °C
18.9 °C
Sampled 15 Jul 2026, 3 months ago · 2 results banked
Every result (2)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 13:35 | 18.9 | 18.9 °C |
| 24 Jun 2026, 10:45 | 16.3 | 16.3 °C |
pH
code 0061
8.39
Sampled 15 Jul 2026, 3 months ago · 2 results banked
Every result (2)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 13:35 | 8.39 | 8.39 |
| 24 Jun 2026, 10:45 | 8.32 | 8.32 |
Conductivity
at 25 °C · code 0077 · µS/cm
340 µS/cm
Sampled 15 Jul 2026, 3 months ago · 2 results banked
Every result (2)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 13:35 | 340 | 340 µS/cm |
| 24 Jun 2026, 10:45 | 354.5 | 354.5 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
5200 per 100 ml
Sampled 15 Jul 2026, 3 months ago · 45 results banked
Every result (45)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 13:35 | 5200 | 5200 per 100 ml |
| 5 Jul 2026, 10:20 | 600 | 600 per 100 ml |
| 2 Jul 2026, 16:30 | 790 | 790 per 100 ml |
| 24 Jun 2026, 10:45 | 2400 | 2400 per 100 ml |
| 19 Sep 2025, 10:24 | 2200 | 2200 per 100 ml |
| 10 Sep 2025, 14:50 | 5800 | 5800 per 100 ml |
| 2 Sep 2025, 12:45 | 4000 | 4000 per 100 ml |
| 27 Aug 2025, 15:00 | 7900 | 7900 per 100 ml |
| 20 Aug 2025, 14:40 | 1500 | 1500 per 100 ml |
| 14 Aug 2025, 13:52 | 2800 | 2800 per 100 ml |
| 8 Aug 2025, 13:20 | 4400 | 4400 per 100 ml |
| 3 Aug 2025, 10:23 | 1300 | 1300 per 100 ml |
| 25 Jul 2025, 10:58 | 3800 | 3800 per 100 ml |
| 18 Jul 2025, 10:13 | 2900 | 2900 per 100 ml |
| 7 Jul 2025, 12:45 | 2900 | 2900 per 100 ml |
| 26 Jun 2025, 10:20 | 2200 | 2200 per 100 ml |
| 20 Jun 2025, 14:24 | 870 | 870 per 100 ml |
| 12 Jun 2025, 14:21 | 6400 | 6400 per 100 ml |
| 6 Jun 2025, 15:12 | 1400 | 1400 per 100 ml |
| 4 Jun 2025, 14:00 | 4500 | 4500 per 100 ml |
| 31 May 2025, 13:24 | 2100 | 2100 per 100 ml |
| 23 May 2025, 11:57 | 1700 | 1700 per 100 ml |
| 22 May 2025, 12:15 | 5800 | 5800 per 100 ml |
| 19 May 2025, 13:30 | 3100 | 3100 per 100 ml |
| 7 May 2025, 10:36 | 2400 | 2400 per 100 ml |
| 17 Sep 2024, 10:15 | 1500 | 1500 per 100 ml |
| 10 Sep 2024, 15:35 | 1600 | 1600 per 100 ml |
| 6 Sep 2024, 10:28 | 7900 | 7900 per 100 ml |
| 30 Aug 2024, 11:47 | 2600 | 2600 per 100 ml |
| 23 Aug 2024, 13:28 | 2100 | 2100 per 100 ml |
| 10 Aug 2024, 10:23 | 430 | 430 per 100 ml |
| 5 Aug 2024, 12:55 | 11000 | 11000 per 100 ml |
| 1 Aug 2024, 10:21 | 2500 | 2500 per 100 ml |
| 23 Jul 2024, 10:24 | 3100 | 3100 per 100 ml |
| 15 Jul 2024, 13:57 | 5200 | 5200 per 100 ml |
| 10 Jul 2024, 10:10 | 9900 | 9900 per 100 ml |
| 3 Jul 2024, 13:15 | 800 | 800 per 100 ml |
| 24 Jun 2024, 15:05 | 1400 | 1400 per 100 ml |
| 17 Jun 2024, 14:27 | 1500 | 1500 per 100 ml |
| 13 Jun 2024, 10:15 | 6500 | 6500 per 100 ml |
| 6 Jun 2024, 15:25 | 790 | 790 per 100 ml |
| 1 Jun 2024, 10:18 | 4200 | 4200 per 100 ml |
| 23 May 2024, 11:02 | 1300 | 1300 per 100 ml |
| 16 May 2024, 10:25 | 3600 | 3600 per 100 ml |
| 5 May 2024, 11:28 | 1900 | 1900 per 100 ml |
Everything measured here
22 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 22 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 2 | Jun 2026 – Jul 2026 | 98.5% 15 Jul 2026 |
| Temperature of Water 0076 | River water | 2 | Jun 2026 – Jul 2026 | 18.9 °C 15 Jul 2026 |
| pH 0061 | River water | 2 | Jun 2026 – Jul 2026 | 8.39 15 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 2 | Jun 2026 – Jul 2026 | 340 µS/cm 15 Jul 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 45 | May 2024 – Jul 2026 | 5200 per 100 ml 15 Jul 2026 |
| Bacteroides HF183 primer 5886 | River water | 5 | Jun 2024 – Jun 2025 | Present / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Horse 3122 | River water | 5 | Jun 2024 – Jun 2025 | Present 12 Jun 2025 |
| Bacteroidetes Marker : Horse Copy Number 3123 | River water | 5 | Jun 2024 – Jun 2025 | 3 log (10) gene copies / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Human copy number 3820 | River water | 5 | Jun 2024 – Jun 2025 | 5.8 log (10) gene copies / 100ml 12 Jun 2025 |
| Bacteroidetes Marker : Ruminant 4906 | River water | 5 | Jun 2024 – Jun 2025 | Not found in test 12 Jun 2025 |
| Bacteroidetes Marker : Ruminant copy number 3819 | River water | 5 | Jun 2024 – Jun 2025 | below 2 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 | 2.7 log (10) gene copies / 100ml 12 Jun 2025 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 44 | May 2024 – Jul 2026 | 870 colony forming units / 100ml 15 Jul 2026 |
| Microbial Source Tracking 4876 | River water | 5 | Jun 2024 – Jun 2025 | 1 text result 12 Jun 2025 |
| Mitochondrial Marker : Canine 4870 | River water | 2 | May 2025 – Jun 2025 | Present 12 Jun 2025 |
| Mitochrondrial Marker: Canine copy number 3816 | River water | 2 | May 2025 – Jun 2025 | 2.5 log (10) gene copies / 100ml 12 Jun 2025 |
| MST Filtration 4926 | River water | 44 | May 2024 – Jul 2026 | DNA Stored 15 Jul 2026 |
| National Grid Reference : Whole : Field report 7434 | River water | 4 | Jun 2026 – Jul 2026 | 1 unitless value 15 Jul 2026 |
| Preparation: DNA 5923 | River water | 5 | Jun 2024 – Jun 2025 | Done 12 Jun 2025 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 3 | Jun 2026 – Jul 2026 | Not found 15 Jul 2026 |
| Volume of Sample Filtered 4865 | River water | 44 | May 2024 – Jul 2026 | 850 millilitre 15 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.