River Severn at Atcham
EA name: RIVER SEVERN AT ATCHAM
Environment Agency sampling point MD-00052182 · 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
- 1 Sep 2026, 14:0730 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 since 9 Oct 2023 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 354000, 309300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Severn
- River, by the map
- Afon HafrenPlaced on the river its name gives, 53 m from the line.
- Next gauge downstream
- Buildwas On the River Severn · 21 km along the river
- Nearest gauge upstream
- Leaton Knolls LVL 7.5 km along the riverWelsh Bridge On the River Severn · 14 km along the riverHookagate On the Rea Brook · 21 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Monitoring (national agency policy) (13 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
90.1%
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 90.1 | 90.1% |
| 10 Aug 2026, 11:59 | 97.7 | 97.7% |
| 16 Jul 2026, 10:12 | 99 | 99% |
| 28 May 2026, 14:11 | 89.9 | 89.9% |
| 17 Apr 2026, 13:57 | 99.7 | 99.7% |
| 6 Jan 2026, 13:00 | 99.2 | 99.2% |
| 27 Nov 2025, 11:30 | 98.5 | 98.5% |
| 29 Oct 2025, 10:04 | 99.8 | 99.8% |
| 10 Sep 2025, 08:35 | 90.4 | 90.4% |
| 27 Aug 2025, 10:24 | 97.1 | 97.1% |
| 22 Jul 2025, 09:30 | 89.7 | 89.7% |
| 13 Jun 2025, 11:35 | 95.1 | 95.1% |
| 21 May 2025, 08:54 | 86.6 | 86.6% |
| 7 Apr 2025, 09:54 | 104.1 | 104.1% |
| 17 Mar 2025, 10:11 | 98.7 | 98.7% |
| 19 Feb 2025, 09:36 | 97.8 | 97.8% |
| 30 Jan 2025, 14:59 | 98.1 | 98.1% |
| 17 Dec 2024, 10:38 | 100.2 | 100.2% |
| 14 Oct 2024, 13:34 | 98.4 | 98.4% |
| 30 Sep 2024, 12:33 | 95.3 | 95.3% |
| 19 Aug 2024, 10:47 | 93.2 | 93.2% |
| 15 Jul 2024, 12:26 | 93.9 | 93.9% |
| 17 Jun 2024, 11:40 | 99.1 | 99.1% |
| 17 Jun 2024, 09:04 | 101.3 | 101.3% |
| 11 Mar 2024, 09:39 | 94.7 | 94.7% |
| 29 Jan 2024, 11:20 | 96 | 96% |
| 4 Dec 2023, 11:23 | 81.5 | 81.5% |
| 1 Nov 2023, 10:53 | 94.7 | 94.7% |
| 9 Oct 2023, 09:24 | 91.9 | 91.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.63 mg/l
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 8.63 | 8.63 mg/l |
| 10 Aug 2026, 11:59 | 9.13 | 9.13 mg/l |
| 16 Jul 2026, 10:12 | 8.96 | 8.96 mg/l |
| 28 May 2026, 14:11 | 7.83 | 7.83 mg/l |
| 17 Apr 2026, 13:57 | 10.8 | 10.8 mg/l |
| 6 Jan 2026, 13:00 | 13.5 | 13.5 mg/l |
| 27 Nov 2025, 11:30 | 11.9 | 11.9 mg/l |
| 29 Oct 2025, 10:04 | 11.5 | 11.5 mg/l |
| 10 Sep 2025, 08:35 | 9.07 | 9.07 mg/l |
| 27 Aug 2025, 10:24 | 9.38 | 9.38 mg/l |
| 22 Jul 2025, 09:30 | 8.25 | 8.25 mg/l |
| 13 Jun 2025, 11:35 | 9 | 9 mg/l |
| 21 May 2025, 08:54 | 8.65 | 8.65 mg/l |
| 7 Apr 2025, 09:54 | 11.6 | 11.6 mg/l |
| 17 Mar 2025, 10:11 | 12 | 12 mg/l |
| 19 Feb 2025, 09:36 | 12.7 | 12.7 mg/l |
| 30 Jan 2025, 14:59 | 12.1 | 12.1 mg/l |
| 17 Dec 2024, 10:38 | 11.7 | 11.7 mg/l |
| 14 Oct 2024, 13:34 | 11.3 | 11.3 mg/l |
| 30 Sep 2024, 12:33 | 10.4 | 10.4 mg/l |
| 19 Aug 2024, 10:47 | 9.14 | 9.14 mg/l |
| 15 Jul 2024, 12:26 | 9.09 | 9.09 mg/l |
| 17 Jun 2024, 11:40 | 9.82 | 9.82 mg/l |
| 17 Jun 2024, 09:04 | 10.2 | 10.2 mg/l |
| 11 Mar 2024, 09:39 | 11.4 | 11.4 mg/l |
| 29 Jan 2024, 11:20 | 11.5 | 11.5 mg/l |
| 4 Dec 2023, 11:23 | 10.7 | 10.7 mg/l |
| 1 Nov 2023, 10:53 | 10.4 | 10.4 mg/l |
| 9 Oct 2023, 09:24 | 9.34 | 9.34 mg/l |
Water temperature
code 0076 · °C
17.3 °C
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 17.3 | 17.3 °C |
| 10 Aug 2026, 11:59 | 18.5 | 18.5 °C |
| 16 Jul 2026, 10:12 | 20.1 | 20.1 °C |
| 28 May 2026, 14:11 | 22.1 | 22.1 °C |
| 17 Apr 2026, 13:57 | 11.6 | 11.6 °C |
| 6 Jan 2026, 13:00 | 2.5 | 2.5 °C |
| 27 Nov 2025, 11:30 | 7.3 | 7.3 °C |
| 29 Oct 2025, 10:04 | 9.2 | 9.2 °C |
| 10 Sep 2025, 08:35 | 15.1 | 15.1 °C |
| 27 Aug 2025, 10:24 | 16.9 | 16.9 °C |
| 22 Jul 2025, 09:30 | 19.3 | 19.3 °C |
| 13 Jun 2025, 11:35 | 17.9 | 17.9 °C |
| 21 May 2025, 08:54 | 15.3 | 15.3 °C |
| 7 Apr 2025, 09:54 | 10.5 | 10.5 °C |
| 17 Mar 2025, 10:11 | 6.8 | 6.8 °C |
| 19 Feb 2025, 09:36 | 4.2 | 4.2 °C |
| 30 Jan 2025, 14:59 | 6.3 | 6.3 °C |
| 17 Dec 2024, 10:38 | 8.6 | 8.6 °C |
| 14 Oct 2024, 13:34 | 9.3 | 9.3 °C |
| 30 Sep 2024, 12:33 | 11.4 | 11.4 °C |
| 19 Aug 2024, 10:47 | 16.2 | 16.2 °C |
| 15 Jul 2024, 12:26 | 16.8 | 16.8 °C |
| 17 Jun 2024, 11:40 | 15.7 | 15.7 °C |
| 17 Jun 2024, 09:04 | 15.1 | 15.1 °C |
| 11 Mar 2024, 09:39 | 7.2 | 7.2 °C |
| 29 Jan 2024, 11:20 | 7.5 | 7.5 °C |
| 4 Dec 2023, 11:23 | 4 | 4 °C |
| 1 Nov 2023, 10:53 | 11.2 | 11.2 °C |
| 9 Oct 2023, 09:24 | 14.5 | 14.5 °C |
pH
code 0061
7.72
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 7.72 | 7.72 |
| 10 Aug 2026, 11:59 | 7.76 | 7.76 |
| 16 Jul 2026, 10:12 | 7.94 | 7.94 |
| 28 May 2026, 14:11 | 7.64 | 7.64 |
| 17 Apr 2026, 13:57 | 7.9 | 7.9 |
| 6 Jan 2026, 13:00 | 8.14 | 8.14 |
| 27 Nov 2025, 11:30 | 7.56 | 7.56 |
| 29 Oct 2025, 10:04 | 7.49 | 7.49 |
| 10 Sep 2025, 08:35 | 7.89 | 7.89 |
| 27 Aug 2025, 10:24 | 7.75 | 7.75 |
| 22 Jul 2025, 09:30 | 7.57 | 7.57 |
| 13 Jun 2025, 11:35 | 7.77 | 7.77 |
| 21 May 2025, 08:54 | 7.78 | 7.78 |
| 7 Apr 2025, 09:54 | 8.44 | 8.44 |
| 17 Mar 2025, 10:11 | 8.05 | 8.05 |
| 19 Feb 2025, 09:36 | 8.14 | 8.14 |
| 30 Jan 2025, 14:59 | 7.93 | 7.93 |
| 17 Dec 2024, 10:38 | 7.84 | 7.84 |
| 14 Oct 2024, 13:34 | 7.94 | 7.94 |
| 30 Sep 2024, 12:33 | 7.86 | 7.86 |
| 19 Aug 2024, 10:47 | 7.54 | 7.54 |
| 15 Jul 2024, 12:26 | 7.96 | 7.96 |
| 17 Jun 2024, 11:40 | 8.03 | 8.03 |
| 17 Jun 2024, 09:04 | 8.2 | 8.2 |
| 11 Mar 2024, 09:39 | 7.87 | 7.87 |
| 29 Jan 2024, 11:20 | 7.45 | 7.45 |
| 4 Dec 2023, 11:23 | 7.84 | 7.84 |
| 1 Nov 2023, 10:53 | 7.9 | 7.9 |
| 9 Oct 2023, 09:24 | 7.92 | 7.92 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Aug 2026, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2026, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 May 2026, 14:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2026, 13:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jan 2026, 13:00 | 0.062 | 0.062 mg/l |
| 27 Nov 2025, 11:30 | 0.039 | 0.039 mg/l |
| 29 Oct 2025, 10:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Sep 2025, 08:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Aug 2025, 10:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jul 2025, 09:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jun 2025, 11:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 May 2025, 08:54 | 0.28 | 0.28 mg/l |
| 7 Apr 2025, 09:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2025, 10:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2025, 09:36 | 0.062 | 0.062 mg/l |
| 30 Jan 2025, 14:59 | 0.058 | 0.058 mg/l |
| 17 Dec 2024, 10:38 | 0.035 | 0.035 mg/l |
| 14 Oct 2024, 13:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2024, 12:33 | 0.1 | 0.1 mg/l |
| 19 Aug 2024, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 12:26 | 0.038 | 0.038 mg/l |
| 17 Jun 2024, 11:40 | 0.037 | 0.037 mg/l |
| 17 Jun 2024, 09:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Mar 2024, 09:39 | 0.19 | 0.19 mg/l |
| 29 Jan 2024, 11:20 | 0.45 | 0.45 mg/l |
| 4 Dec 2023, 11:23 | 0.095 | 0.095 mg/l |
| 1 Nov 2023, 10:53 | 0.066 | 0.066 mg/l |
| 9 Oct 2023, 09:24 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.49 mg/l
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 2.49 | 2.49 mg/l |
| 10 Aug 2026, 11:59 | 2.1 | 2.1 mg/l |
| 16 Jul 2026, 10:12 | 2 | 2 mg/l |
| 28 May 2026, 14:11 | 2.38 | 2.38 mg/l |
| 17 Apr 2026, 13:57 | 1.89 | 1.89 mg/l |
| 6 Jan 2026, 13:00 | 2.98 | 2.98 mg/l |
| 27 Nov 2025, 11:30 | 2.49 | 2.49 mg/l |
| 29 Oct 2025, 10:04 | 2.1 | 2.1 mg/l |
| 10 Sep 2025, 08:35 | 2.39 | 2.39 mg/l |
| 27 Aug 2025, 10:24 | 2.2 | 2.2 mg/l |
| 22 Jul 2025, 09:30 | 1.7 | 1.7 mg/l |
| 13 Jun 2025, 11:35 | 1.99 | 1.99 mg/l |
| 21 May 2025, 08:54 | 3.45 | 3.45 mg/l |
| 7 Apr 2025, 09:54 | 3.19 | 3.19 mg/l |
| 17 Mar 2025, 10:11 | 3.29 | 3.29 mg/l |
| 19 Feb 2025, 09:36 | 3.38 | 3.38 mg/l |
| 30 Jan 2025, 14:59 | 2.29 | 2.29 mg/l |
| 17 Dec 2024, 10:38 | 2.39 | 2.39 mg/l |
| 14 Oct 2024, 13:34 | 1.99 | 1.99 mg/l |
| 30 Sep 2024, 12:33 | 2.48 | 2.48 mg/l |
| 19 Aug 2024, 10:47 | 1.99 | 1.99 mg/l |
| 15 Jul 2024, 12:26 | 2.39 | 2.39 mg/l |
| 17 Jun 2024, 11:40 | 2.18 | 2.18 mg/l |
| 17 Jun 2024, 09:04 | 2.19 | 2.19 mg/l |
| 11 Mar 2024, 09:39 | 3.67 | 3.67 mg/l |
| 29 Jan 2024, 11:20 | 3.17 | 3.17 mg/l |
| 4 Dec 2023, 11:23 | 3.28 | 3.28 mg/l |
| 1 Nov 2023, 10:53 | 3.07 | 3.07 mg/l |
| 9 Oct 2023, 09:24 | 1.2 | 1.2 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.076 mg/l
Sampled 1 Sep 2026, 30 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 0.076 | 0.076 mg/l |
| 16 Jul 2026, 10:12 | 0.051 | 0.051 mg/l |
| 28 May 2026, 14:11 | 0.065 | 0.065 mg/l |
| 17 Apr 2026, 13:57 | 0.035 | 0.035 mg/l |
| 6 Jan 2026, 13:00 | 0.058 | 0.058 mg/l |
| 27 Nov 2025, 11:30 | 0.068 | 0.068 mg/l |
| 29 Oct 2025, 10:04 | 0.058 | 0.058 mg/l |
| 10 Sep 2025, 08:35 | 0.075 | 0.075 mg/l |
| 27 Aug 2025, 10:24 | 0.065 | 0.065 mg/l |
| 22 Jul 2025, 09:30 | 0.41 | 0.41 mg/l |
| 13 Jun 2025, 11:35 | 0.06 | 0.06 mg/l |
| 21 May 2025, 08:54 | 0.044 | 0.044 mg/l |
| 7 Apr 2025, 09:54 | 0.015 | 0.015 mg/l |
| 17 Mar 2025, 10:11 | 0.072 | 0.072 mg/l |
| 19 Feb 2025, 09:36 | 0.087 | 0.087 mg/l |
| 30 Jan 2025, 14:59 | 0.13 | 0.13 mg/l |
| 17 Dec 2024, 10:38 | 0.065 | 0.065 mg/l |
| 14 Oct 2024, 13:34 | 0.046 | 0.046 mg/l |
| 30 Sep 2024, 12:33 | 0.11 | 0.11 mg/l |
| 19 Aug 2024, 10:47 | 0.24 | 0.24 mg/l |
| 15 Jul 2024, 12:26 | 0.1 | 0.1 mg/l |
| 17 Jun 2024, 11:40 | 0.071 | 0.071 mg/l |
| 17 Jun 2024, 09:04 | 0.069 | 0.069 mg/l |
| 11 Mar 2024, 09:39 | 0.21 | 0.21 mg/l |
| 29 Jan 2024, 11:20 | 0.087 | 0.087 mg/l |
| 4 Dec 2023, 11:23 | 0.1 | 0.1 mg/l |
| 1 Nov 2023, 10:53 | 0.096 | 0.096 mg/l |
| 9 Oct 2023, 09:24 | 0.057 | 0.057 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
355 µS/cm
Sampled 1 Sep 2026, 30 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 14:07 | 355 | 355 µS/cm |
| 10 Aug 2026, 11:59 | 314 | 314 µS/cm |
| 16 Jul 2026, 10:12 | 298 | 298 µS/cm |
| 28 May 2026, 14:11 | 341 | 341 µS/cm |
| 17 Apr 2026, 13:57 | 255 | 255 µS/cm |
| 6 Jan 2026, 13:00 | 325 | 325 µS/cm |
| 27 Nov 2025, 11:30 | 205 | 205 µS/cm |
| 29 Oct 2025, 10:04 | 134 | 134 µS/cm |
| 10 Sep 2025, 08:35 | 344 | 344 µS/cm |
| 27 Aug 2025, 10:24 | 313 | 313 µS/cm |
| 22 Jul 2025, 09:30 | 302 | 302 µS/cm |
| 13 Jun 2025, 11:35 | 307 | 307 µS/cm |
| 21 May 2025, 08:54 | 443 | 443 µS/cm |
| 7 Apr 2025, 09:54 | 440 | 440 µS/cm |
| 17 Mar 2025, 10:11 | 368 | 368 µS/cm |
| 19 Feb 2025, 09:36 | 351 | 351 µS/cm |
| 30 Jan 2025, 14:59 | 216 | 216 µS/cm |
| 17 Dec 2024, 10:38 | 248 | 248 µS/cm |
| 14 Oct 2024, 13:34 | 247 | 247 µS/cm |
| 30 Sep 2024, 12:33 | 231 | 231 µS/cm |
| 19 Aug 2024, 10:47 | 274 | 274 µS/cm |
| 15 Jul 2024, 12:26 | 326 | 326 µS/cm |
| 17 Jun 2024, 11:40 | 288 | 288 µS/cm |
| 17 Jun 2024, 09:04 | 290 | 290 µS/cm |
| 11 Mar 2024, 09:39 | 330 | 330 µS/cm |
| 29 Jan 2024, 11:20 | 225 | 225 µS/cm |
| 4 Dec 2023, 11:23 | 340 | 340 µS/cm |
| 1 Nov 2023, 10:53 | 238 | 238 µS/cm |
| 9 Oct 2023, 09:24 | 135 | 135 µS/cm |
Everything measured here
64 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 64 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 29 | Oct 2023 – Sep 2026 | 90.1% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Oct 2023 – Sep 2026 | 8.63 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 29 | Oct 2023 – Sep 2026 | 17.3 °C 1 Sep 2026 |
| pH 0061 | River water | 29 | Oct 2023 – Sep 2026 | 7.72 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Sep 2026 | below 0.03 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Sep 2026 | 2.49 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Oct 2023 – Sep 2026 | 0.076 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 29 | Oct 2023 – Sep 2026 | 355 µS/cm 1 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Apr 2024 – Aug 2024 | below 0.004 µg/l 19 Aug 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Apr 2024 – Aug 2024 | below 0.005 µg/l 19 Aug 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Apr 2024 – Aug 2024 | 0.0033 µg/l 19 Aug 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Sep 2026 | 83 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Sep 2026 | below 0.0005 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Jun 2024 – May 2026 | 1.1 mg/l 28 May 2026 |
| Cadmium, Dissolved 0106 | River water | 2 | Oct 2023 – Jan 2024 | 0.079 µg/l 29 Jan 2024 |
| Calcium, Dissolved 0239 | River water | 2 | Oct 2023 – Jan 2024 | 22 mg/l 29 Jan 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Oct 2023 – Jan 2024 | 5 mg/l 29 Jan 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| Magnesium, Dissolved 0235 | River water | 2 | Oct 2023 – Jan 2024 | 4.5 mg/l 29 Jan 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Sep 2026 | 0.0082 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Sep 2026 | 2.5 mg/l 1 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Apr 2024 – Aug 2024 | 0.012 µg/l 19 Aug 2024 |
| Perfluorobutanoic acid 2995 | River water | 2 | Apr 2024 – Aug 2024 | 0.0026 µg/l 19 Aug 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| Perfluorodecanoic acid 8892 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Apr 2024 – Aug 2024 | below 0.005 µg/l 19 Aug 2024 |
| Perfluorododecanoic acid 8894 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorohexanoic acid 8888 | River water | 2 | Apr 2024 – Aug 2024 | 0.0014 µg/l 19 Aug 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorononanoic acid 8891 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluorooctanoic acid 8890 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Apr 2024 – Aug 2024 | below 0.0005 µg/l 19 Aug 2024 |
| Perfluoropentanoic acid 8887 | River water | 2 | Apr 2024 – Aug 2024 | below 0.001 µg/l 19 Aug 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Apr 2024 – Aug 2024 | below 0.006 µg/l 19 Aug 2024 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Apr 2024 – Aug 2024 | below 0.005 µg/l 19 Aug 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Apr 2024 – Aug 2024 | below 0.004 µg/l 19 Aug 2024 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Apr 2024 – Aug 2024 | below 0.002 µg/l 19 Aug 2024 |
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.