River Blithe - Cresswell
EA name: RIVER BLITHE - CRESSWELL
Environment Agency sampling point MD-67425900 · 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
- 26 May 2026, 11:544 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 24 since 9 Apr 2024 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 397510, 339276As published, to the nearest 1 m. Open in a map
- River, by its own name
- Blithe
- River, by the map
- River BlithePlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Cresswell On the River Blithe · 0.3 km along the river
- Nearest gauge upstream
- Blythe Bridge On the River Blithe · 3.6 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
114.1%
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 114.1 | 114.1% |
| 2 Mar 2026, 11:46 | 97.9 | 97.9% |
| 9 Feb 2026, 09:41 | 93 | 93% |
| 21 Jan 2026, 09:43 | 95.4 | 95.4% |
| 17 Dec 2025, 09:39 | 93.9 | 93.9% |
| 27 Nov 2025, 09:21 | 98.5 | 98.5% |
| 28 Oct 2025, 14:05 | 98.8 | 98.8% |
| 17 Sep 2025, 11:24 | 89.1 | 89.1% |
| 1 Aug 2025, 09:32 | 96.3 | 96.3% |
| 8 Jul 2025, 12:05 | 102.3 | 102.3% |
| 20 Jun 2025, 09:36 | 118.6 | 118.6% |
| 19 May 2025, 09:45 | 101 | 101% |
| 25 Apr 2025, 09:48 | 98.5 | 98.5% |
| 20 Mar 2025, 10:18 | 108.2 | 108.2% |
| 17 Feb 2025, 12:17 | 98.9 | 98.9% |
| 30 Jan 2025, 12:20 | 98 | 98% |
| 5 Dec 2024, 11:17 | 93.6 | 93.6% |
| 19 Nov 2024, 09:34 | 93.6 | 93.6% |
| 14 Oct 2024, 09:04 | 92.5 | 92.5% |
| 26 Sep 2024, 10:56 | 90.3 | 90.3% |
| 23 Aug 2024, 11:48 | 103.4 | 103.4% |
| 15 Jul 2024, 11:30 | 104.2 | 104.2% |
| 17 Jun 2024, 10:42 | 99.1 | 99.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.8 mg/l
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 10.8 | 10.8 mg/l |
| 2 Mar 2026, 11:46 | 11.2 | 11.2 mg/l |
| 9 Feb 2026, 09:41 | 11.3 | 11.3 mg/l |
| 21 Jan 2026, 09:43 | 11.8 | 11.8 mg/l |
| 17 Dec 2025, 09:39 | 11.6 | 11.6 mg/l |
| 27 Nov 2025, 09:21 | 11.3 | 11.3 mg/l |
| 28 Oct 2025, 14:05 | 10.9 | 10.9 mg/l |
| 17 Sep 2025, 11:24 | 9.3 | 9.3 mg/l |
| 1 Aug 2025, 09:32 | 10 | 10 mg/l |
| 8 Jul 2025, 12:05 | 10.4 | 10.4 mg/l |
| 20 Jun 2025, 09:36 | 11.8 | 11.8 mg/l |
| 19 May 2025, 09:45 | 11.2 | 11.2 mg/l |
| 25 Apr 2025, 09:48 | 11.2 | 11.2 mg/l |
| 20 Mar 2025, 10:18 | 12.9 | 12.9 mg/l |
| 17 Feb 2025, 12:17 | 12.9 | 12.9 mg/l |
| 30 Jan 2025, 12:20 | 12.6 | 12.6 mg/l |
| 5 Dec 2024, 11:17 | 10.8 | 10.8 mg/l |
| 19 Nov 2024, 09:34 | 11.8 | 11.8 mg/l |
| 14 Oct 2024, 09:04 | 10.7 | 10.7 mg/l |
| 26 Sep 2024, 10:56 | 9.62 | 9.62 mg/l |
| 23 Aug 2024, 11:48 | 10.6 | 10.6 mg/l |
| 15 Jul 2024, 11:30 | 10.8 | 10.8 mg/l |
| 17 Jun 2024, 10:42 | 10.7 | 10.7 mg/l |
Water temperature
code 0076 · °C
17.7 °C
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 17.7 | 17.7 °C |
| 2 Mar 2026, 11:46 | 9.3 | 9.3 °C |
| 9 Feb 2026, 09:41 | 7 | 7 °C |
| 21 Jan 2026, 09:43 | 6.3 | 6.3 °C |
| 17 Dec 2025, 09:39 | 6.4 | 6.4 °C |
| 27 Nov 2025, 09:21 | 9.1 | 9.1 °C |
| 28 Oct 2025, 14:05 | 10.7 | 10.7 °C |
| 17 Sep 2025, 11:24 | 13.3 | 13.3 °C |
| 1 Aug 2025, 09:32 | 13.5 | 13.5 °C |
| 8 Jul 2025, 12:05 | 14.5 | 14.5 °C |
| 20 Jun 2025, 09:36 | 15.6 | 15.6 °C |
| 19 May 2025, 09:45 | 10.8 | 10.8 °C |
| 25 Apr 2025, 09:48 | 9.5 | 9.5 °C |
| 20 Mar 2025, 10:18 | 7.7 | 7.7 °C |
| 17 Feb 2025, 12:17 | 4.1 | 4.1 °C |
| 30 Jan 2025, 12:20 | 4.7 | 4.7 °C |
| 5 Dec 2024, 11:17 | 9 | 9 °C |
| 19 Nov 2024, 09:34 | 5.4 | 5.4 °C |
| 14 Oct 2024, 09:04 | 8.9 | 8.9 °C |
| 26 Sep 2024, 10:56 | 12.4 | 12.4 °C |
| 23 Aug 2024, 11:48 | 14.2 | 14.2 °C |
| 15 Jul 2024, 11:30 | 13.8 | 13.8 °C |
| 17 Jun 2024, 10:42 | 11.9 | 11.9 °C |
pH
code 0061
8.15
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 8.15 | 8.15 |
| 2 Mar 2026, 11:46 | 7.95 | 7.95 |
| 9 Feb 2026, 09:41 | 7.69 | 7.69 |
| 21 Jan 2026, 09:43 | 7.75 | 7.75 |
| 17 Dec 2025, 09:39 | 7.64 | 7.64 |
| 27 Nov 2025, 09:21 | 7.71 | 7.71 |
| 28 Oct 2025, 14:05 | 7.95 | 7.95 |
| 17 Sep 2025, 11:24 | 7.73 | 7.73 |
| 1 Aug 2025, 09:32 | 8.04 | 8.04 |
| 8 Jul 2025, 12:05 | 7.99 | 7.99 |
| 20 Jun 2025, 09:36 | 8.07 | 8.07 |
| 19 May 2025, 09:45 | 8.11 | 8.11 |
| 25 Apr 2025, 09:48 | 7.73 | 7.73 |
| 20 Mar 2025, 10:18 | 8.25 | 8.25 |
| 17 Feb 2025, 12:17 | 8.08 | 8.08 |
| 30 Jan 2025, 12:20 | 7.78 | 7.78 |
| 5 Dec 2024, 11:17 | 7.77 | 7.77 |
| 19 Nov 2024, 09:34 | 7.75 | 7.75 |
| 14 Oct 2024, 09:04 | 7.79 | 7.79 |
| 26 Sep 2024, 10:56 | 7.68 | 7.68 |
| 23 Aug 2024, 11:48 | 8.04 | 8.04 |
| 15 Jul 2024, 11:30 | 8.11 | 8.11 |
| 17 Jun 2024, 10:42 | 8 | 8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 26 May 2026, 4 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Mar 2026, 11:46 | 0.049 | 0.049 mg/l |
| 9 Feb 2026, 09:41 | 0.11 | 0.11 mg/l |
| 21 Jan 2026, 09:43 | 0.13 | 0.13 mg/l |
| 17 Dec 2025, 09:39 | 0.032 | 0.032 mg/l |
| 27 Nov 2025, 09:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Oct 2025, 14:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2025, 11:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 09:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jul 2025, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2025, 09:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 May 2025, 09:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Apr 2025, 09:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Mar 2025, 10:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Feb 2025, 12:17 | 0.061 | 0.061 mg/l |
| 30 Jan 2025, 12:20 | 0.049 | 0.049 mg/l |
| 19 Nov 2024, 09:34 | 0.065 | 0.065 mg/l |
| 14 Oct 2024, 09:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Sep 2024, 10:56 | 0.034 | 0.034 mg/l |
| 23 Aug 2024, 11:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 10:42 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.68 mg/l
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 3.68 | 3.68 mg/l |
| 2 Mar 2026, 11:46 | 3.29 | 3.29 mg/l |
| 9 Feb 2026, 09:41 | 2.89 | 2.89 mg/l |
| 21 Jan 2026, 09:43 | 2.78 | 2.78 mg/l |
| 17 Dec 2025, 09:39 | 3.29 | 3.29 mg/l |
| 27 Nov 2025, 09:21 | 3.49 | 3.49 mg/l |
| 28 Oct 2025, 14:05 | 3.49 | 3.49 mg/l |
| 17 Sep 2025, 11:24 | 0.989 | 0.989 mg/l |
| 1 Aug 2025, 09:32 | 3.59 | 3.59 mg/l |
| 8 Jul 2025, 12:05 | 3.09 | 3.09 mg/l |
| 20 Jun 2025, 09:36 | 3.67 | 3.67 mg/l |
| 19 May 2025, 09:45 | 3.88 | 3.88 mg/l |
| 25 Apr 2025, 09:48 | 4.29 | 4.29 mg/l |
| 20 Mar 2025, 10:18 | 4.09 | 4.09 mg/l |
| 17 Feb 2025, 12:17 | 3.48 | 3.48 mg/l |
| 30 Jan 2025, 12:20 | 2.99 | 2.99 mg/l |
| 5 Dec 2024, 11:17 | 2.08 | 2.08 mg/l |
| 19 Nov 2024, 09:34 | 2.58 | 2.58 mg/l |
| 14 Oct 2024, 09:04 | 3.19 | 3.19 mg/l |
| 26 Sep 2024, 10:56 | 2.59 | 2.59 mg/l |
| 23 Aug 2024, 11:48 | 2.48 | 2.48 mg/l |
| 15 Jul 2024, 11:30 | 3.59 | 3.59 mg/l |
| 17 Jun 2024, 10:42 | 2.79 | 2.79 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.04 mg/l
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 0.04 | 0.04 mg/l |
| 2 Mar 2026, 11:46 | 0.056 | 0.056 mg/l |
| 9 Feb 2026, 09:41 | 0.065 | 0.065 mg/l |
| 21 Jan 2026, 09:43 | 0.045 | 0.045 mg/l |
| 17 Dec 2025, 09:39 | 0.054 | 0.054 mg/l |
| 27 Nov 2025, 09:21 | 0.038 | 0.038 mg/l |
| 28 Oct 2025, 14:05 | 0.036 | 0.036 mg/l |
| 17 Sep 2025, 11:24 | 0.083 | 0.083 mg/l |
| 1 Aug 2025, 09:32 | 0.039 | 0.039 mg/l |
| 8 Jul 2025, 12:05 | 0.049 | 0.049 mg/l |
| 20 Jun 2025, 09:36 | 0.04 | 0.04 mg/l |
| 19 May 2025, 09:45 | 0.026 | 0.026 mg/l |
| 25 Apr 2025, 09:48 | 0.015 | 0.015 mg/l |
| 20 Mar 2025, 10:18 | 0.013 | 0.013 mg/l |
| 17 Feb 2025, 12:17 | 0.037 | 0.037 mg/l |
| 30 Jan 2025, 12:20 | 0.044 | 0.044 mg/l |
| 5 Dec 2024, 11:17 | 0.06 | 0.06 mg/l |
| 19 Nov 2024, 09:34 | 0.052 | 0.052 mg/l |
| 14 Oct 2024, 09:04 | 0.046 | 0.046 mg/l |
| 26 Sep 2024, 10:56 | 0.061 | 0.061 mg/l |
| 23 Aug 2024, 11:48 | 0.053 | 0.053 mg/l |
| 15 Jul 2024, 11:30 | 0.037 | 0.037 mg/l |
| 17 Jun 2024, 10:42 | 0.042 | 0.042 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
528 µS/cm
Sampled 26 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 May 2026, 11:54 | 528 | 528 µS/cm |
| 2 Mar 2026, 11:46 | 428 | 428 µS/cm |
| 9 Feb 2026, 09:41 | 374 | 374 µS/cm |
| 21 Jan 2026, 09:43 | 371 | 371 µS/cm |
| 17 Dec 2025, 09:39 | 384 | 384 µS/cm |
| 27 Nov 2025, 09:21 | 498 | 498 µS/cm |
| 28 Oct 2025, 14:05 | 458 | 458 µS/cm |
| 17 Sep 2025, 11:24 | 193 | 193 µS/cm |
| 1 Aug 2025, 09:32 | 507 | 507 µS/cm |
| 8 Jul 2025, 12:05 | 484 | 484 µS/cm |
| 20 Jun 2025, 09:36 | 510 | 510 µS/cm |
| 19 May 2025, 09:45 | 522 | 522 µS/cm |
| 25 Apr 2025, 09:48 | 532 | 532 µS/cm |
| 20 Mar 2025, 10:18 | 538 | 538 µS/cm |
| 17 Feb 2025, 12:17 | 502 | 502 µS/cm |
| 30 Jan 2025, 12:20 | 465 | 465 µS/cm |
| 5 Dec 2024, 11:17 | 375 | 375 µS/cm |
| 19 Nov 2024, 09:34 | 987 | 987 µS/cm |
| 14 Oct 2024, 09:04 | 481 | 481 µS/cm |
| 26 Sep 2024, 10:56 | 425 | 425 µS/cm |
| 23 Aug 2024, 11:48 | 385 | 385 µS/cm |
| 15 Jul 2024, 11:30 | 521 | 521 µS/cm |
| 17 Jun 2024, 10:42 | 480 | 480 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 | 23 | Jun 2024 – May 2026 | 114.1% 26 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jun 2024 – May 2026 | 10.8 mg/l 26 May 2026 |
| Temperature of Water 0076 | River water | 23 | Jun 2024 – May 2026 | 17.7 °C 26 May 2026 |
| pH 0061 | River water | 23 | Jun 2024 – May 2026 | 8.15 26 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Jun 2024 – May 2026 | below 0.03 mg/l 26 May 2026 |
| Nitrate as N 0117 | River water | 23 | Jun 2024 – May 2026 | 3.68 mg/l 26 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jun 2024 – May 2026 | 0.04 mg/l 26 May 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Jun 2024 – May 2026 | 528 µS/cm 26 May 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 4 | Apr 2024 – Mar 2025 | below 0.004 µg/l 20 Mar 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 4 | Apr 2024 – Mar 2025 | below 0.005 µg/l 20 Mar 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jun 2024 – May 2026 | 190 mg/l 26 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jun 2024 – May 2026 | below 0.00096 mg/l 26 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | below 1 mg/l 26 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| Nitrite as N 0118 | River water | 23 | Jun 2024 – May 2026 | 0.024 mg/l 26 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jun 2024 – May 2026 | 3.7 mg/l 26 May 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 4 | Apr 2024 – Mar 2025 | 0.00077 µg/l 20 Mar 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorobutanoic acid 2995 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| Perfluorodecanoic acid 8892 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 4 | Apr 2024 – Mar 2025 | below 0.005 µg/l 20 Mar 2025 |
| Perfluorododecanoic acid 8894 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoroheptanoic acid 8889 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorohexanoic acid 8888 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluorononanoic acid 8891 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 4 | Apr 2024 – Mar 2025 | 0.00069 µg/l 20 Mar 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 4 | Apr 2024 – Mar 2025 | 0.0006 µg/l 20 Mar 2025 |
| Perfluorooctanoic acid 8890 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 4 | Apr 2024 – Mar 2025 | below 0.0005 µg/l 20 Mar 2025 |
| Perfluoropentanoic acid 8887 | River water | 4 | Apr 2024 – Mar 2025 | below 0.001 µg/l 20 Mar 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 4 | Apr 2024 – Mar 2025 | below 0.006 µg/l 20 Mar 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | Apr 2024 – Mar 2025 | below 0.005 µg/l 20 Mar 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 4 | Apr 2024 – Mar 2025 | below 0.004 µg/l 20 Mar 2025 |
| Perfluoroundecanoic acid 8893 | River water | 4 | Apr 2024 – Mar 2025 | below 0.002 µg/l 20 Mar 2025 |
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.