River Isle upstream of Chard sewage treatment works
EA name: R ISLE US CHARD STW
Environment Agency sampling point SW-E2030800 · 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
- 11 Aug 2026, 14:2651 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 20 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 334073, 111259As published, to the nearest 1 m. Open in a map
- River, by its own name
- Isle
- River, by the map
- River IslePlaced on the river its name gives, 103 m from the line.
- Next gauge downstream
- Donyatt On the River Isle · 3.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
81.2%
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 81.2 | 81.2% |
| 13 Jul 2026, 09:02 | 79.8 | 79.8% |
| 22 Jun 2026, 11:42 | 91 | 91% |
| 29 May 2026, 08:48 | 90.2 | 90.2% |
| 22 Apr 2026, 09:31 | 100.1 | 100.1% |
| 4 Mar 2026, 11:08 | 108 | 108% |
| 2 Feb 2026, 11:42 | 97.7 | 97.7% |
| 7 Jan 2026, 10:49 | 96.4 | 96.4% |
| 4 Dec 2025, 12:49 | 94.5 | 94.5% |
| 3 Nov 2025, 10:20 | 87.1 | 87.1% |
| 8 Oct 2025, 11:32 | 87.5 | 87.5% |
| 3 Sep 2025, 11:49 | 87.8 | 87.8% |
| 4 Aug 2025, 09:53 | 82.3 | 82.3% |
| 16 Jul 2025, 12:25 | 85.8 | 85.8% |
| 20 Jun 2025, 13:28 | 103.5 | 103.5% |
| 6 May 2025, 12:27 | 113.1 | 113.1% |
| 11 Apr 2025, 12:03 | 112.6 | 112.6% |
| 20 Mar 2025, 11:55 | 118.8 | 118.8% |
| 26 Feb 2025, 11:50 | 99 | 99% |
| 24 Jan 2025, 09:46 | 96 | 96% |
| 2 Dec 2024, 12:05 | 96.8 | 96.8% |
| 18 Nov 2024, 09:33 | 91.4 | 91.4% |
| 18 Oct 2024, 13:41 | 92.3 | 92.3% |
| 24 Sep 2024, 13:47 | 88.3 | 88.3% |
| 19 Aug 2024, 14:00 | 82.4 | 82.4% |
| 23 Jul 2024, 09:36 | 92.8 | 92.8% |
| 20 Jun 2024, 09:59 | 96.3 | 96.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.28 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 7.28 | 7.28 mg/l |
| 13 Jul 2026, 09:02 | 7.41 | 7.41 mg/l |
| 22 Jun 2026, 11:42 | 8.06 | 8.06 mg/l |
| 29 May 2026, 08:48 | 8.96 | 8.96 mg/l |
| 22 Apr 2026, 09:31 | 11 | 11 mg/l |
| 4 Mar 2026, 11:08 | 12.3 | 12.3 mg/l |
| 2 Feb 2026, 11:42 | 11.8 | 11.8 mg/l |
| 7 Jan 2026, 10:49 | 12.7 | 12.7 mg/l |
| 4 Dec 2025, 12:49 | 11.1 | 11.1 mg/l |
| 3 Nov 2025, 10:20 | 9.34 | 9.34 mg/l |
| 8 Oct 2025, 11:32 | 8.96 | 8.96 mg/l |
| 3 Sep 2025, 11:49 | 8.52 | 8.52 mg/l |
| 4 Aug 2025, 09:53 | 7.62 | 7.62 mg/l |
| 16 Jul 2025, 12:25 | 7.77 | 7.77 mg/l |
| 20 Jun 2025, 13:28 | 9.21 | 9.21 mg/l |
| 6 May 2025, 12:27 | 11.8 | 11.8 mg/l |
| 11 Apr 2025, 12:03 | 11.7 | 11.7 mg/l |
| 20 Mar 2025, 11:55 | 13.2 | 13.2 mg/l |
| 26 Feb 2025, 11:50 | 11.6 | 11.6 mg/l |
| 24 Jan 2025, 09:46 | 11.5 | 11.5 mg/l |
| 2 Dec 2024, 12:05 | 11 | 11 mg/l |
| 18 Nov 2024, 09:33 | 10.3 | 10.3 mg/l |
| 18 Oct 2024, 13:41 | 9.59 | 9.59 mg/l |
| 24 Sep 2024, 13:47 | 8.88 | 8.88 mg/l |
| 19 Aug 2024, 14:00 | 7.76 | 7.76 mg/l |
| 23 Jul 2024, 09:36 | 9.33 | 9.33 mg/l |
| 20 Jun 2024, 09:59 | 10.1 | 10.1 mg/l |
Water temperature
code 0076 · °C
20.6 °C
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 20.6 | 20.6 °C |
| 13 Jul 2026, 09:02 | 18.8 | 18.8 °C |
| 22 Jun 2026, 11:42 | 21.2 | 21.2 °C |
| 29 May 2026, 08:48 | 15.6 | 15.6 °C |
| 22 Apr 2026, 09:31 | 11.1 | 11.1 °C |
| 4 Mar 2026, 11:08 | 9.6 | 9.6 °C |
| 2 Feb 2026, 11:42 | 7.2 | 7.2 °C |
| 7 Jan 2026, 10:49 | 3.9 | 3.9 °C |
| 4 Dec 2025, 12:49 | 8.2 | 8.2 °C |
| 3 Nov 2025, 10:20 | 12.1 | 12.1 °C |
| 8 Oct 2025, 11:32 | 14.2 | 14.2 °C |
| 3 Sep 2025, 11:49 | 16.7 | 16.7 °C |
| 4 Aug 2025, 09:53 | 19 | 19 °C |
| 16 Jul 2025, 12:25 | 20.1 | 20.1 °C |
| 20 Jun 2025, 13:28 | 21 | 21 °C |
| 6 May 2025, 12:27 | 13.4 | 13.4 °C |
| 11 Apr 2025, 12:03 | 13.4 | 13.4 °C |
| 20 Mar 2025, 11:55 | 10.5 | 10.5 °C |
| 26 Feb 2025, 11:50 | 8.4 | 8.4 °C |
| 24 Jan 2025, 09:46 | 7.5 | 7.5 °C |
| 2 Dec 2024, 12:05 | 9.8 | 9.8 °C |
| 18 Nov 2024, 09:33 | 9.8 | 9.8 °C |
| 18 Oct 2024, 13:41 | 13.5 | 13.5 °C |
| 24 Sep 2024, 13:47 | 15 | 15 °C |
| 19 Aug 2024, 14:00 | 18.1 | 18.1 °C |
| 23 Jul 2024, 09:36 | 15 | 15 °C |
| 20 Jun 2024, 09:59 | 13.2 | 13.2 °C |
pH
code 0061
7.79
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 7.79 | 7.79 |
| 13 Jul 2026, 09:02 | 7.78 | 7.78 |
| 22 Jun 2026, 11:42 | 7.89 | 7.89 |
| 29 May 2026, 08:48 | 8.09 | 8.09 |
| 22 Apr 2026, 09:31 | 8.24 | 8.24 |
| 4 Mar 2026, 11:08 | 8.14 | 8.14 |
| 2 Feb 2026, 11:42 | 7.71 | 7.71 |
| 7 Jan 2026, 10:49 | 8.06 | 8.06 |
| 4 Dec 2025, 12:49 | 7.79 | 7.79 |
| 3 Nov 2025, 10:20 | 7.81 | 7.81 |
| 8 Oct 2025, 11:32 | 7.81 | 7.81 |
| 3 Sep 2025, 11:49 | 7.85 | 7.85 |
| 4 Aug 2025, 09:53 | 7.86 | 7.86 |
| 16 Jul 2025, 12:25 | 7.87 | 7.87 |
| 20 Jun 2025, 13:28 | 8.13 | 8.13 |
| 6 May 2025, 12:27 | 8.49 | 8.49 |
| 11 Apr 2025, 12:03 | 8.67 | 8.67 |
| 20 Mar 2025, 11:55 | 8.51 | 8.51 |
| 26 Feb 2025, 11:50 | 7.79 | 7.79 |
| 24 Jan 2025, 09:46 | 7.59 | 7.59 |
| 2 Dec 2024, 12:05 | 7.78 | 7.78 |
| 18 Nov 2024, 09:33 | 7.89 | 7.89 |
| 18 Oct 2024, 13:41 | 7.77 | 7.77 |
| 24 Sep 2024, 13:47 | 7.86 | 7.86 |
| 19 Aug 2024, 14:00 | 7.89 | 7.89 |
| 23 Jul 2024, 09:36 | 8.38 | 8.38 |
| 20 Jun 2024, 09:59 | 8.12 | 8.12 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.045 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 0.045 | 0.045 mg/l |
| 13 Jul 2026, 09:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jun 2026, 11:42 | 0.13 | 0.13 mg/l |
| 29 May 2026, 08:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Apr 2026, 09:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2026, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2026, 11:42 | 0.088 | 0.088 mg/l |
| 7 Jan 2026, 10:49 | 0.12 | 0.12 mg/l |
| 4 Dec 2025, 12:49 | 0.17 | 0.17 mg/l |
| 3 Nov 2025, 10:20 | 0.07 | 0.07 mg/l |
| 8 Oct 2025, 11:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2025, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Aug 2025, 09:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2025, 12:25 | 0.039 | 0.039 mg/l |
| 20 Jun 2025, 13:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 May 2025, 12:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Apr 2025, 12:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2025, 11:55 | 0.035 | 0.035 mg/l |
| 26 Feb 2025, 11:50 | 0.052 | 0.052 mg/l |
| 24 Jan 2025, 09:46 | 0.048 | 0.048 mg/l |
| 2 Dec 2024, 12:05 | 0.26 | 0.26 mg/l |
| 18 Nov 2024, 09:33 | 0.047 | 0.047 mg/l |
| 18 Oct 2024, 13:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Sep 2024, 13:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Aug 2024, 14:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2024, 09:36 | 0.06 | 0.06 mg/l |
| 20 Jun 2024, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.19 mg/l
Sampled 11 Aug 2026, 51 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 1.19 | 1.19 mg/l |
| 13 Jul 2026, 09:02 | 0.656 | 0.656 mg/l |
| 22 Jun 2026, 11:42 | 0.903 | 0.903 mg/l |
| 29 May 2026, 08:48 | 1.28 | 1.28 mg/l |
| 22 Apr 2026, 09:31 | 1.78 | 1.78 mg/l |
| 4 Mar 2026, 11:08 | 2.49 | 2.49 mg/l |
| 2 Feb 2026, 11:42 | 1.98 | 1.98 mg/l |
| 7 Jan 2026, 10:49 | 2.48 | 2.48 mg/l |
| 4 Dec 2025, 12:49 | 2.38 | 2.38 mg/l |
| 3 Nov 2025, 10:20 | 1.87 | 1.87 mg/l |
| 8 Oct 2025, 11:32 | 1.09 | 1.09 mg/l |
| 3 Sep 2025, 11:49 | 1.6 | 1.6 mg/l |
| 4 Aug 2025, 09:53 | 1.58 | 1.58 mg/l |
| 16 Jul 2025, 12:25 | 1.18 | 1.18 mg/l |
| 20 Jun 2025, 13:28 | 0.967 | 0.967 mg/l |
| 6 May 2025, 12:27 | 1.97 | 1.97 mg/l |
| 11 Apr 2025, 12:03 | 1.58 | 1.58 mg/l |
| 20 Mar 2025, 11:55 | 1.69 | 1.69 mg/l |
| 26 Feb 2025, 11:50 | 1.99 | 1.99 mg/l |
| 24 Jan 2025, 09:46 | 1.98 | 1.98 mg/l |
| 18 Nov 2024, 09:33 | 2.37 | 2.37 mg/l |
| 18 Oct 2024, 13:41 | 2.18 | 2.18 mg/l |
| 24 Sep 2024, 13:47 | 1.78 | 1.78 mg/l |
| 19 Aug 2024, 14:00 | 1.09 | 1.09 mg/l |
| 23 Jul 2024, 09:36 | 5.77 | 5.77 mg/l |
| 20 Jun 2024, 09:59 | 5.79 | 5.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.047 mg/l
Sampled 11 Aug 2026, 51 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 0.047 | 0.047 mg/l |
| 13 Jul 2026, 09:02 | 0.089 | 0.089 mg/l |
| 22 Jun 2026, 11:42 | 0.083 | 0.083 mg/l |
| 29 May 2026, 08:48 | <0.01 | below 0.01 mg/l (not detected above this) |
| 22 Apr 2026, 09:31 | 0.041 | 0.041 mg/l |
| 4 Mar 2026, 11:08 | 0.056 | 0.056 mg/l |
| 2 Feb 2026, 11:42 | 0.093 | 0.093 mg/l |
| 7 Jan 2026, 10:49 | 0.07 | 0.07 mg/l |
| 4 Dec 2025, 12:49 | 0.064 | 0.064 mg/l |
| 3 Nov 2025, 10:20 | 0.041 | 0.041 mg/l |
| 8 Oct 2025, 11:32 | 0.044 | 0.044 mg/l |
| 3 Sep 2025, 11:49 | 0.095 | 0.095 mg/l |
| 4 Aug 2025, 09:53 | 0.078 | 0.078 mg/l |
| 16 Jul 2025, 12:25 | 0.091 | 0.091 mg/l |
| 20 Jun 2025, 13:28 | 0.023 | 0.023 mg/l |
| 6 May 2025, 12:27 | 0.046 | 0.046 mg/l |
| 11 Apr 2025, 12:03 | 0.015 | 0.015 mg/l |
| 20 Mar 2025, 11:55 | 0.013 | 0.013 mg/l |
| 26 Feb 2025, 11:50 | 0.061 | 0.061 mg/l |
| 24 Jan 2025, 09:46 | 0.16 | 0.16 mg/l |
| 18 Nov 2024, 09:33 | 0.097 | 0.097 mg/l |
| 18 Oct 2024, 13:41 | 0.067 | 0.067 mg/l |
| 24 Sep 2024, 13:47 | 0.095 | 0.095 mg/l |
| 19 Aug 2024, 14:00 | 0.037 | 0.037 mg/l |
| 23 Jul 2024, 09:36 | 0.18 | 0.18 mg/l |
| 20 Jun 2024, 09:59 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
359 µS/cm
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 14:26 | 359 | 359 µS/cm |
| 13 Jul 2026, 09:02 | 346 | 346 µS/cm |
| 22 Jun 2026, 11:42 | 357 | 357 µS/cm |
| 29 May 2026, 08:48 | 384 | 384 µS/cm |
| 22 Apr 2026, 09:31 | 374 | 374 µS/cm |
| 4 Mar 2026, 11:08 | 362 | 362 µS/cm |
| 2 Feb 2026, 11:42 | 264 | 264 µS/cm |
| 7 Jan 2026, 10:49 | 358 | 358 µS/cm |
| 4 Dec 2025, 12:49 | 313 | 313 µS/cm |
| 3 Nov 2025, 10:20 | 381 | 381 µS/cm |
| 8 Oct 2025, 11:32 | 368 | 368 µS/cm |
| 3 Sep 2025, 11:49 | 393 | 393 µS/cm |
| 4 Aug 2025, 09:53 | 379 | 379 µS/cm |
| 16 Jul 2025, 12:25 | 360 | 360 µS/cm |
| 20 Jun 2025, 13:28 | 364 | 364 µS/cm |
| 6 May 2025, 12:27 | 402 | 402 µS/cm |
| 11 Apr 2025, 12:03 | 366 | 366 µS/cm |
| 20 Mar 2025, 11:55 | 356 | 356 µS/cm |
| 26 Feb 2025, 11:50 | 246 | 246 µS/cm |
| 24 Jan 2025, 09:46 | 266 | 266 µS/cm |
| 2 Dec 2024, 12:05 | 317 | 317 µS/cm |
| 18 Nov 2024, 09:33 | 372 | 372 µS/cm |
| 18 Oct 2024, 13:41 | 326 | 326 µS/cm |
| 24 Sep 2024, 13:47 | 373 | 373 µS/cm |
| 19 Aug 2024, 14:00 | 333 | 333 µS/cm |
| 23 Jul 2024, 09:36 | 563 | 563 µS/cm |
| 20 Jun 2024, 09:59 | 643 | 643 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Aug 2026 | 81.2% 11 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Aug 2026 | 7.28 mg/l 11 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 20.6 °C 11 Aug 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Aug 2026 | 7.79 11 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Aug 2026 | 0.045 mg/l 11 Aug 2026 |
| Nitrate as N 0117 | River water | 26 | Jun 2024 – Aug 2026 | 1.19 mg/l 11 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 26 | Jun 2024 – Aug 2026 | 0.047 mg/l 11 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 359 µS/cm 11 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Aug 2026 | 130 mg/l 11 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Aug 2026 | 0.00111 mg/l 11 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | 2.5 mg/l 29 May 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Aug 2026 | 0.015 mg/l 11 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 26 | Jun 2024 – Aug 2026 | 1.2 mg/l 11 Aug 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.