River Lark Southgate Road Bridge Bury St Edmunds
EA name: R.LARK SOUTHGATE RD.BR.BURY ST EDMUNDS
Environment Agency sampling point AN-37M05 · 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
- 9 Sep 2026, 09:5622 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 3 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 586500, 263300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Lark
- River, by the map
- River LarkPlaced on the river its name gives, 37 m from the line.
- Next gauge downstream
- Fornham St Martin On the River Lark · 4.8 km along the river
- Nearest gauge upstream
- Sicklesmere On the River Lark · 3.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (35 samples)
3 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
91.3%
Sampled 2 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 91.3 | 91.3% |
| 8 Jun 2026, 13:21 | 66 | 66% |
| 1 May 2026, 13:52 | 141.6 | 141.6% |
| 10 Apr 2026, 13:30 | 144.7 | 144.7% |
| 2 Mar 2026, 10:26 | 99.3 | 99.3% |
| 4 Feb 2026, 11:04 | 95.4 | 95.4% |
| 6 Jan 2026, 14:34 | 99.3 | 99.3% |
| 4 Dec 2025, 12:13 | 89.2 | 89.2% |
| 4 Nov 2025, 10:11 | 43.6 | 43.6% |
| 6 Oct 2025, 12:40 | 64.5 | 64.5% |
| 4 Sep 2025, 14:30 | 69.6 | 69.6% |
| 1 Aug 2025, 13:02 | 60.2 | 60.2% |
| 3 Jun 2025, 15:31 | 67.3 | 67.3% |
| 6 May 2025, 11:31 | 91.6 | 91.6% |
| 3 Apr 2025, 14:41 | 108.1 | 108.1% |
| 3 Mar 2025, 13:42 | 100.8 | 100.8% |
| 10 Feb 2025, 14:22 | 96.8 | 96.8% |
| 8 Jan 2025, 11:47 | 95.6 | 95.6% |
| 8 Jan 2025, 11:13 | 80.4 | 80.4% |
| 2 Dec 2024, 11:40 | 86.7 | 86.7% |
| 4 Nov 2024, 14:32 | 67.5 | 67.5% |
| 11 Oct 2024, 15:58 | 92.1 | 92.1% |
| 3 Sep 2024, 13:00 | 71.7 | 71.7% |
| 5 Aug 2024, 12:42 | 86.3 | 86.3% |
| 1 Jul 2024, 11:08 | 88.5 | 88.5% |
| 3 Jun 2024, 13:03 | 93.6 | 93.6% |
| 4 Mar 2024, 12:50 | 96.9 | 96.9% |
| 1 Feb 2024, 15:12 | 95 | 95% |
| 2 Jan 2024, 09:56 | 91.4 | 91.4% |
| 7 Dec 2023, 14:58 | 94.9 | 94.9% |
| 1 Nov 2023, 11:10 | 90.6 | 90.6% |
| 3 Oct 2023, 13:28 | 60 | 60% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.14 mg/l
Sampled 2 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 8.14 | 8.14 mg/l |
| 8 Jun 2026, 13:21 | 6.64 | 6.64 mg/l |
| 1 May 2026, 13:52 | 14.4 | 14.4 mg/l |
| 10 Apr 2026, 13:30 | 16.1 | 16.1 mg/l |
| 2 Mar 2026, 10:26 | 11.5 | 11.5 mg/l |
| 4 Feb 2026, 11:04 | 11.8 | 11.8 mg/l |
| 6 Jan 2026, 14:34 | 14.3 | 14.3 mg/l |
| 4 Dec 2025, 12:13 | 10.8 | 10.8 mg/l |
| 4 Nov 2025, 10:11 | 4.67 | 4.67 mg/l |
| 6 Oct 2025, 12:40 | 6.8 | 6.8 mg/l |
| 4 Sep 2025, 14:30 | 6.79 | 6.79 mg/l |
| 1 Aug 2025, 13:02 | 5.78 | 5.78 mg/l |
| 3 Jun 2025, 15:31 | 6.87 | 6.87 mg/l |
| 6 May 2025, 11:31 | 10.3 | 10.3 mg/l |
| 3 Apr 2025, 14:41 | 11.7 | 11.7 mg/l |
| 3 Mar 2025, 13:42 | 12.6 | 12.6 mg/l |
| 10 Feb 2025, 14:22 | 12.3 | 12.3 mg/l |
| 8 Jan 2025, 11:47 | 12.5 | 12.5 mg/l |
| 8 Jan 2025, 11:13 | 10.7 | 10.7 mg/l |
| 2 Dec 2024, 11:40 | 10 | 10 mg/l |
| 4 Nov 2024, 14:32 | 7.36 | 7.36 mg/l |
| 11 Oct 2024, 15:58 | 10.5 | 10.5 mg/l |
| 3 Sep 2024, 13:00 | 6.84 | 6.84 mg/l |
| 5 Aug 2024, 12:42 | 8.35 | 8.35 mg/l |
| 1 Jul 2024, 11:08 | 8.98 | 8.98 mg/l |
| 3 Jun 2024, 13:03 | 9.58 | 9.58 mg/l |
| 4 Mar 2024, 12:50 | 11.8 | 11.8 mg/l |
| 1 Feb 2024, 15:12 | 11.6 | 11.6 mg/l |
| 2 Jan 2024, 09:56 | 10.8 | 10.8 mg/l |
| 7 Dec 2023, 14:58 | 11.8 | 11.8 mg/l |
| 1 Nov 2023, 11:10 | 9.88 | 9.88 mg/l |
| 3 Oct 2023, 13:28 | 6.06 | 6.06 mg/l |
Water temperature
code 0076 · °C
20.9 °C
Sampled 2 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 20.9 | 20.9 °C |
| 8 Jun 2026, 13:21 | 15 | 15 °C |
| 1 May 2026, 13:52 | 14.4 | 14.4 °C |
| 10 Apr 2026, 13:30 | 10.6 | 10.6 °C |
| 2 Mar 2026, 10:26 | 8.8 | 8.8 °C |
| 4 Feb 2026, 11:04 | 6.2 | 6.2 °C |
| 6 Jan 2026, 14:34 | 0.4 | 0.4 °C |
| 4 Dec 2025, 12:13 | 7 | 7 °C |
| 4 Nov 2025, 10:11 | 12.2 | 12.2 °C |
| 6 Oct 2025, 12:40 | 12.9 | 12.9 °C |
| 4 Sep 2025, 14:30 | 16.4 | 16.4 °C |
| 1 Aug 2025, 13:02 | 17.2 | 17.2 °C |
| 3 Jun 2025, 15:31 | 14.3 | 14.3 °C |
| 6 May 2025, 11:31 | 10.1 | 10.1 °C |
| 3 Apr 2025, 14:41 | 11.7 | 11.7 °C |
| 3 Mar 2025, 13:42 | 5.7 | 5.7 °C |
| 10 Feb 2025, 14:22 | 5.1 | 5.1 °C |
| 8 Jan 2025, 11:47 | 4 | 4 °C |
| 8 Jan 2025, 11:13 | 3.2 | 3.2 °C |
| 2 Dec 2024, 11:40 | 8.9 | 8.9 °C |
| 4 Nov 2024, 14:32 | 11.4 | 11.4 °C |
| 11 Oct 2024, 15:58 | 9.7 | 9.7 °C |
| 3 Sep 2024, 13:00 | 17.5 | 17.5 °C |
| 5 Aug 2024, 12:42 | 16.8 | 16.8 °C |
| 1 Jul 2024, 11:08 | 14.6 | 14.6 °C |
| 3 Jun 2024, 13:03 | 14.2 | 14.2 °C |
| 4 Mar 2024, 12:50 | 6.8 | 6.8 °C |
| 1 Feb 2024, 15:12 | 6.8 | 6.8 °C |
| 2 Jan 2024, 09:56 | 8.1 | 8.1 °C |
| 7 Dec 2023, 14:58 | 5.9 | 5.9 °C |
| 1 Nov 2023, 11:10 | 11.4 | 11.4 °C |
| 3 Oct 2023, 13:28 | 14.8 | 14.8 °C |
pH
code 0061
8
Sampled 2 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 8 | 8 |
| 8 Jun 2026, 13:21 | 7.72 | 7.72 |
| 1 May 2026, 13:52 | 8.19 | 8.19 |
| 10 Apr 2026, 13:30 | 8.37 | 8.37 |
| 2 Mar 2026, 10:26 | 8.2 | 8.2 |
| 4 Feb 2026, 11:04 | 8.2 | 8.2 |
| 6 Jan 2026, 14:34 | 8.06 | 8.06 |
| 4 Dec 2025, 12:13 | 7.84 | 7.84 |
| 4 Nov 2025, 10:11 | 7.72 | 7.72 |
| 6 Oct 2025, 12:40 | 7.83 | 7.83 |
| 4 Sep 2025, 14:30 | 7.52 | 7.52 |
| 1 Aug 2025, 13:02 | 7.62 | 7.62 |
| 3 Jun 2025, 15:31 | 7.86 | 7.86 |
| 6 May 2025, 11:31 | 8.76 | 8.76 |
| 3 Apr 2025, 14:41 | 8.21 | 8.21 |
| 3 Mar 2025, 13:42 | 8.24 | 8.24 |
| 10 Feb 2025, 14:22 | 8.12 | 8.12 |
| 8 Jan 2025, 11:47 | 8.05 | 8.05 |
| 8 Jan 2025, 11:13 | 7.71 | 7.71 |
| 2 Dec 2024, 11:40 | 8.06 | 8.06 |
| 4 Nov 2024, 14:32 | 7.54 | 7.54 |
| 11 Oct 2024, 15:58 | 7.99 | 7.99 |
| 3 Sep 2024, 13:00 | 7.62 | 7.62 |
| 5 Aug 2024, 12:42 | 7.89 | 7.89 |
| 1 Jul 2024, 11:08 | 7.86 | 7.86 |
| 4 Mar 2024, 12:50 | 8.01 | 8.01 |
| 1 Feb 2024, 15:12 | 8.06 | 8.06 |
| 2 Jan 2024, 09:56 | 7.98 | 7.98 |
| 7 Dec 2023, 14:58 | 8.05 | 8.05 |
| 1 Nov 2023, 11:10 | 8.09 | 8.09 |
| 3 Oct 2023, 13:28 | 7.56 | 7.56 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.14 mg/l
Sampled 2 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 0.14 | 0.14 mg/l |
| 8 Jun 2026, 13:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 May 2026, 13:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Apr 2026, 13:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2026, 11:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jan 2026, 14:34 | 0.28 | 0.28 mg/l |
| 4 Dec 2025, 12:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Nov 2025, 10:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Oct 2025, 12:40 | 0.075 | 0.075 mg/l |
| 4 Sep 2025, 14:30 | 0.092 | 0.092 mg/l |
| 1 Aug 2025, 13:02 | 0.38 | 0.38 mg/l |
| 3 Jun 2025, 15:31 | 0.15 | 0.15 mg/l |
| 6 May 2025, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Apr 2025, 14:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 13:42 | 0.047 | 0.047 mg/l |
| 10 Feb 2025, 14:22 | 0.086 | 0.086 mg/l |
| 8 Jan 2025, 11:47 | 0.046 | 0.046 mg/l |
| 2 Dec 2024, 11:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Nov 2024, 14:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Oct 2024, 15:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2024, 13:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2024, 12:42 | 0.036 | 0.036 mg/l |
| 1 Jul 2024, 11:08 | 0.032 | 0.032 mg/l |
| 3 Jun 2024, 13:03 | 0.041 | 0.041 mg/l |
| 4 Mar 2024, 12:50 | 0.069 | 0.069 mg/l |
| 1 Feb 2024, 15:12 | 0.049 | 0.049 mg/l |
| 2 Jan 2024, 09:56 | 0.039 | 0.039 mg/l |
| 7 Dec 2023, 14:58 | 0.045 | 0.045 mg/l |
| 1 Nov 2023, 11:10 | 0.033 | 0.033 mg/l |
| 3 Oct 2023, 13:28 | 0.12 | 0.12 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.376 mg/l
Sampled 2 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 0.376 | 0.376 mg/l |
| 8 Jun 2026, 13:21 | 2.43 | 2.43 mg/l |
| 1 May 2026, 13:52 | 9.25 | 9.25 mg/l |
| 10 Apr 2026, 13:30 | 11 | 11 mg/l |
| 2 Mar 2026, 10:26 | 13 | 13 mg/l |
| 4 Feb 2026, 11:04 | 15 | 15 mg/l |
| 6 Jan 2026, 14:34 | 12.9 | 12.9 mg/l |
| 4 Dec 2025, 12:13 | 16 | 16 mg/l |
| 4 Nov 2025, 10:11 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Oct 2025, 12:40 | 0.193 | 0.193 mg/l |
| 4 Sep 2025, 14:30 | 0.55 | 0.55 mg/l |
| 1 Aug 2025, 13:02 | 0.248 | 0.248 mg/l |
| 3 Jun 2025, 15:31 | 0.862 | 0.862 mg/l |
| 6 May 2025, 11:31 | 6.88 | 6.88 mg/l |
| 3 Apr 2025, 14:41 | 9.36 | 9.36 mg/l |
| 3 Mar 2025, 13:42 | 11 | 11 mg/l |
| 10 Feb 2025, 14:22 | 9.93 | 9.93 mg/l |
| 8 Jan 2025, 11:47 | 13 | 13 mg/l |
| 2 Dec 2024, 11:40 | 8.77 | 8.77 mg/l |
| 4 Nov 2024, 14:32 | 3.65 | 3.65 mg/l |
| 11 Oct 2024, 15:58 | 8.16 | 8.16 mg/l |
| 3 Sep 2024, 13:00 | 3.97 | 3.97 mg/l |
| 5 Aug 2024, 12:42 | 5.88 | 5.88 mg/l |
| 1 Jul 2024, 11:08 | 7.77 | 7.77 mg/l |
| 3 Jun 2024, 13:03 | 8.45 | 8.45 mg/l |
| 4 Mar 2024, 12:50 | 9.77 | 9.77 mg/l |
| 1 Feb 2024, 15:12 | 9.84 | 9.84 mg/l |
| 2 Jan 2024, 09:56 | 7.78 | 7.78 mg/l |
| 7 Dec 2023, 14:58 | 11 | 11 mg/l |
| 1 Nov 2023, 11:10 | 11 | 11 mg/l |
| 3 Oct 2023, 13:28 | 1.65 | 1.65 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.28 mg/l
Sampled 2 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 0.28 | 0.28 mg/l |
| 8 Jun 2026, 13:21 | 0.073 | 0.073 mg/l |
| 1 May 2026, 13:52 | 0.037 | 0.037 mg/l |
| 10 Apr 2026, 13:30 | 0.031 | 0.031 mg/l |
| 2 Mar 2026, 10:26 | 0.055 | 0.055 mg/l |
| 4 Feb 2026, 11:04 | 0.048 | 0.048 mg/l |
| 6 Jan 2026, 14:34 | 0.1 | 0.1 mg/l |
| 4 Dec 2025, 12:13 | 0.062 | 0.062 mg/l |
| 4 Nov 2025, 10:11 | 0.23 | 0.23 mg/l |
| 6 Oct 2025, 12:40 | 0.14 | 0.14 mg/l |
| 4 Sep 2025, 14:30 | 0.099 | 0.099 mg/l |
| 1 Aug 2025, 13:02 | 0.12 | 0.12 mg/l |
| 3 Jun 2025, 15:31 | 0.17 | 0.17 mg/l |
| 6 May 2025, 11:31 | 0.05 | 0.05 mg/l |
| 3 Apr 2025, 14:41 | 0.054 | 0.054 mg/l |
| 3 Mar 2025, 13:42 | 0.04 | 0.04 mg/l |
| 10 Feb 2025, 14:22 | 0.055 | 0.055 mg/l |
| 8 Jan 2025, 11:47 | 0.05 | 0.05 mg/l |
| 2 Dec 2024, 11:40 | 0.065 | 0.065 mg/l |
| 4 Nov 2024, 14:32 | 0.12 | 0.12 mg/l |
| 11 Oct 2024, 15:58 | 0.13 | 0.13 mg/l |
| 3 Sep 2024, 13:00 | 0.13 | 0.13 mg/l |
| 5 Aug 2024, 12:42 | 0.13 | 0.13 mg/l |
| 1 Jul 2024, 11:08 | 0.13 | 0.13 mg/l |
| 3 Jun 2024, 13:03 | 0.14 | 0.14 mg/l |
| 4 Mar 2024, 12:50 | 0.072 | 0.072 mg/l |
| 1 Feb 2024, 15:12 | 0.1 | 0.1 mg/l |
| 2 Jan 2024, 09:56 | 0.087 | 0.087 mg/l |
| 7 Dec 2023, 14:58 | 0.067 | 0.067 mg/l |
| 1 Nov 2023, 11:10 | 0.092 | 0.092 mg/l |
| 3 Oct 2023, 13:28 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
843 µS/cm
Sampled 2 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 13:31 | 843 | 843 µS/cm |
| 8 Jun 2026, 13:21 | 734 | 734 µS/cm |
| 1 May 2026, 13:52 | 801 | 801 µS/cm |
| 10 Apr 2026, 13:30 | 807 | 807 µS/cm |
| 2 Mar 2026, 10:26 | 761 | 761 µS/cm |
| 4 Feb 2026, 11:04 | 732 | 732 µS/cm |
| 6 Jan 2026, 14:34 | 915 | 915 µS/cm |
| 4 Dec 2025, 12:13 | 840 | 840 µS/cm |
| 4 Nov 2025, 10:11 | 786 | 786 µS/cm |
| 6 Oct 2025, 12:40 | 715 | 715 µS/cm |
| 4 Sep 2025, 14:30 | 452 | 452 µS/cm |
| 1 Aug 2025, 13:02 | 529 | 529 µS/cm |
| 3 Jun 2025, 15:31 | 889 | 889 µS/cm |
| 6 May 2025, 11:31 | 796 | 796 µS/cm |
| 3 Apr 2025, 14:41 | 791 | 791 µS/cm |
| 3 Mar 2025, 13:42 | 754 | 754 µS/cm |
| 10 Feb 2025, 14:22 | 822 | 822 µS/cm |
| 8 Jan 2025, 11:47 | 741 | 741 µS/cm |
| 8 Jan 2025, 11:13 | 717 | 717 µS/cm |
| 2 Dec 2024, 11:40 | 758 | 758 µS/cm |
| 4 Nov 2024, 14:32 | 849 | 849 µS/cm |
| 11 Oct 2024, 15:58 | 777 | 777 µS/cm |
| 3 Sep 2024, 13:00 | 809 | 809 µS/cm |
| 5 Aug 2024, 12:42 | 839 | 839 µS/cm |
| 1 Jul 2024, 11:08 | 850 | 850 µS/cm |
| 3 Jun 2024, 13:03 | 814 | 814 µS/cm |
| 4 Mar 2024, 12:50 | 758 | 758 µS/cm |
| 1 Feb 2024, 15:12 | 808 | 808 µS/cm |
| 2 Jan 2024, 09:56 | 574 | 574 µS/cm |
| 7 Dec 2023, 14:58 | 777 | 777 µS/cm |
| 1 Nov 2023, 11:10 | 736 | 736 µS/cm |
| 3 Oct 2023, 13:28 | 685 | 685 µS/cm |
Everything measured here
60 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 60 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 32 | Oct 2023 – Jul 2026 | 91.3% 2 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 32 | Oct 2023 – Jul 2026 | 8.14 mg/l 2 Jul 2026 |
| Temperature of Water 0076 | River water | 32 | Oct 2023 – Jul 2026 | 20.9 °C 2 Jul 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Jul 2026 | 8 2 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Oct 2023 – Jul 2026 | 0.14 mg/l 2 Jul 2026 |
| Nitrate as N 0117 | River water | 31 | Oct 2023 – Jul 2026 | 0.376 mg/l 2 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Oct 2023 – Jul 2026 | 0.28 mg/l 2 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 32 | Oct 2023 – Jul 2026 | 843 µS/cm 2 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Jul 2024 – Jul 2024 | below 0.004 µg/l 1 Jul 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Jul 2024 – Jul 2024 | below 0.005 µg/l 1 Jul 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Oct 2023 – Jul 2026 | 310 mg/l 2 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – Jul 2026 | 0.00563 mg/l 2 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| Nitrite as N 0118 | River water | 31 | Oct 2023 – Jul 2026 | 0.074 mg/l 2 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Jul 2026 | 0.45 mg/l 2 Jul 2026 |
| No flow /No sample 7668 | River water | 3 | Jul 2025 – Sep 2026 | No flow/discharge at sampling point 9 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Jul 2024 – Jul 2024 | 0.0022 µg/l 1 Jul 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Jul 2024 – Jul 2024 | 0.0016 µg/l 1 Jul 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Jul 2024 – Jul 2024 | below 0.005 µg/l 1 Jul 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Jul 2024 – Jul 2024 | 0.0015 µg/l 1 Jul 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Jul 2024 – Jul 2024 | 0.0055 µg/l 1 Jul 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Jul 2024 – Jul 2024 | 0.0024 µg/l 1 Jul 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Jul 2024 – Jul 2024 | below 0.0005 µg/l 1 Jul 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Jul 2024 – Jul 2024 | below 0.001 µg/l 1 Jul 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Jul 2024 – Jul 2024 | 0.003 µg/l 1 Jul 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Jul 2024 – Jul 2024 | 0.0036 µg/l 1 Jul 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Jul 2024 – Jul 2024 | 0.0012 µg/l 1 Jul 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Jul 2024 – Jul 2024 | 0.00084 µg/l 1 Jul 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Jul 2024 – Jul 2024 | 0.0021 µg/l 1 Jul 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Jul 2024 – Jul 2024 | below 0.006 µg/l 1 Jul 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Jul 2024 – Jul 2024 | below 0.005 µg/l 1 Jul 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Jul 2024 – Jul 2024 | below 0.004 µg/l 1 Jul 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Jul 2024 – Jul 2024 | below 0.002 µg/l 1 Jul 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.