Nidd at Old Skip Bridge
EA name: NIDD AT OLD SKIP BRIDGE
Environment Agency sampling point NE-49800100 · 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
- 16 Jul 2026, 12:183 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 25 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 448233, 455977As published, to the nearest 1 m. Open in a map
- River, by its own name
- Nidd
- River, by the map
- River NiddPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Skip Bridge On the River Nidd · 0.1 km along the river
- Nearest gauge upstream
- Hunsingore On the River Nidd · 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
89.3%
Sampled 16 Jul 2026, 3 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 89.3 | 89.3% |
| 29 May 2026, 14:44 | 84.4 | 84.4% |
| 18 Mar 2026, 13:00 | 95.1 | 95.1% |
| 10 Feb 2026, 14:31 | 93.9 | 93.9% |
| 9 Jan 2026, 12:09 | 97 | 97% |
| 3 Mar 2025, 11:04 | 98.3 | 98.3% |
| 4 Feb 2025, 11:39 | 96.1 | 96.1% |
| 28 Jan 2025, 10:07 | 96.6 | 96.6% |
| 4 Dec 2024, 10:05 | 96.6 | 96.6% |
| 20 Nov 2024, 10:52 | 86.8 | 86.8% |
| 17 Oct 2024, 15:24 | 91.7 | 91.7% |
| 17 Sep 2024, 13:56 | 93.8 | 93.8% |
| 21 Aug 2024, 10:52 | 89.1 | 89.1% |
| 15 Jul 2024, 15:56 | 94.1 | 94.1% |
| 17 Jun 2024, 09:29 | 87.2 | 87.2% |
| 14 May 2024, 09:56 | 92 | 92% |
| 16 Apr 2024, 10:13 | 93.9 | 93.9% |
| 20 Mar 2024, 13:03 | 94.9 | 94.9% |
| 22 Feb 2024, 13:16 | 97.3 | 97.3% |
| 16 Jan 2024, 14:11 | 95 | 95% |
| 1 Dec 2023, 12:59 | 93 | 93% |
| 25 Oct 2023, 12:45 | 87 | 87% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.15 mg/l
Sampled 16 Jul 2026, 3 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 8.15 | 8.15 mg/l |
| 29 May 2026, 14:44 | 7.79 | 7.79 mg/l |
| 18 Mar 2026, 13:00 | 11 | 11 mg/l |
| 10 Feb 2026, 14:31 | 11.4 | 11.4 mg/l |
| 9 Jan 2026, 12:09 | 13.2 | 13.2 mg/l |
| 3 Mar 2025, 11:04 | 12.2 | 12.2 mg/l |
| 4 Feb 2025, 11:39 | 11.9 | 11.9 mg/l |
| 28 Jan 2025, 10:07 | 12.3 | 12.3 mg/l |
| 4 Dec 2024, 10:05 | 12 | 12 mg/l |
| 20 Nov 2024, 10:52 | 11.4 | 11.4 mg/l |
| 17 Oct 2024, 15:24 | 9.95 | 9.95 mg/l |
| 17 Sep 2024, 13:56 | 9.56 | 9.56 mg/l |
| 21 Aug 2024, 10:52 | 8.83 | 8.83 mg/l |
| 15 Jul 2024, 15:56 | 9.15 | 9.15 mg/l |
| 17 Jun 2024, 09:29 | 8.96 | 8.96 mg/l |
| 14 May 2024, 09:56 | 8.94 | 8.94 mg/l |
| 16 Apr 2024, 10:13 | 10.7 | 10.7 mg/l |
| 20 Mar 2024, 13:03 | 10.8 | 10.8 mg/l |
| 22 Feb 2024, 13:16 | 11.6 | 11.6 mg/l |
| 16 Jan 2024, 14:11 | 12.7 | 12.7 mg/l |
| 1 Dec 2023, 12:59 | 12.2 | 12.2 mg/l |
| 25 Oct 2023, 12:45 | 9.76 | 9.76 mg/l |
Water temperature
code 0076 · °C
19.7 °C
Sampled 16 Jul 2026, 3 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 19.7 | 19.7 °C |
| 29 May 2026, 14:44 | 19.1 | 19.1 °C |
| 18 Mar 2026, 13:00 | 9 | 9 °C |
| 10 Feb 2026, 14:31 | 6.8 | 6.8 °C |
| 9 Jan 2026, 12:09 | 2.6 | 2.6 °C |
| 3 Mar 2025, 11:04 | 6.1 | 6.1 °C |
| 4 Feb 2025, 11:39 | 6 | 6 °C |
| 28 Jan 2025, 10:07 | 5.1 | 5.1 °C |
| 4 Dec 2024, 10:05 | 6.1 | 6.1 °C |
| 20 Nov 2024, 10:52 | 4 | 4 °C |
| 17 Oct 2024, 15:24 | 11.6 | 11.6 °C |
| 17 Sep 2024, 13:56 | 14.4 | 14.4 °C |
| 21 Aug 2024, 10:52 | 15.7 | 15.7 °C |
| 15 Jul 2024, 15:56 | 16.6 | 16.6 °C |
| 17 Jun 2024, 09:29 | 14 | 14 °C |
| 14 May 2024, 09:56 | 16.6 | 16.6 °C |
| 16 Apr 2024, 10:13 | 9.6 | 9.6 °C |
| 20 Mar 2024, 13:03 | 9.5 | 9.5 °C |
| 22 Feb 2024, 13:16 | 7.8 | 7.8 °C |
| 16 Jan 2024, 14:11 | 3.1 | 3.1 °C |
| 1 Dec 2023, 12:59 | 4 | 4 °C |
| 25 Oct 2023, 12:45 | 10.2 | 10.2 °C |
pH
code 0061
7.79
Sampled 16 Jul 2026, 3 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 7.79 | 7.79 |
| 29 May 2026, 14:44 | 7.75 | 7.75 |
| 18 Mar 2026, 13:00 | 7.46 | 7.46 |
| 10 Feb 2026, 14:31 | 7.56 | 7.56 |
| 9 Jan 2026, 12:09 | 7.88 | 7.88 |
| 3 Mar 2025, 11:04 | 7.87 | 7.87 |
| 4 Feb 2025, 11:39 | 7.67 | 7.67 |
| 28 Jan 2025, 10:07 | 7.85 | 7.85 |
| 4 Dec 2024, 10:05 | 7.97 | 7.97 |
| 20 Nov 2024, 10:52 | 8 | 8 |
| 17 Oct 2024, 15:24 | 7.64 | 7.64 |
| 17 Sep 2024, 13:56 | 7.72 | 7.72 |
| 21 Aug 2024, 10:52 | 7.95 | 7.95 |
| 15 Jul 2024, 15:56 | 7.76 | 7.76 |
| 17 Jun 2024, 09:29 | 7.93 | 7.93 |
| 14 May 2024, 09:56 | 8.01 | 8.01 |
| 16 Apr 2024, 10:13 | 7.87 | 7.87 |
| 20 Mar 2024, 13:03 | 7.61 | 7.61 |
| 22 Feb 2024, 13:16 | 7.52 | 7.52 |
| 16 Jan 2024, 14:11 | 7.95 | 7.95 |
| 1 Dec 2023, 12:59 | 7.78 | 7.78 |
| 25 Oct 2023, 12:45 | 7.46 | 7.46 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 16 Jul 2026, 3 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 May 2026, 14:44 | 0.053 | 0.053 mg/l |
| 18 Mar 2026, 13:00 | 0.052 | 0.052 mg/l |
| 10 Feb 2026, 14:31 | 0.085 | 0.085 mg/l |
| 9 Jan 2026, 12:09 | 0.26 | 0.26 mg/l |
| 3 Mar 2025, 11:04 | 0.046 | 0.046 mg/l |
| 4 Feb 2025, 11:39 | 0.12 | 0.12 mg/l |
| 28 Jan 2025, 10:07 | 0.14 | 0.14 mg/l |
| 20 Nov 2024, 10:52 | 0.044 | 0.044 mg/l |
| 17 Oct 2024, 15:24 | 0.06 | 0.06 mg/l |
| 17 Sep 2024, 13:56 | 0.034 | 0.034 mg/l |
| 21 Aug 2024, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 15:56 | 0.052 | 0.052 mg/l |
| 17 Jun 2024, 09:29 | 0.15 | 0.15 mg/l |
| 14 May 2024, 09:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2024, 10:13 | 0.068 | 0.068 mg/l |
| 20 Mar 2024, 13:03 | 0.047 | 0.047 mg/l |
| 22 Feb 2024, 13:16 | 0.074 | 0.074 mg/l |
| 16 Jan 2024, 14:11 | 0.16 | 0.16 mg/l |
| 1 Dec 2023, 12:59 | 0.1 | 0.1 mg/l |
| 25 Oct 2023, 12:45 | 0.087 | 0.087 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.79 mg/l
Sampled 16 Jul 2026, 3 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 4.79 | 4.79 mg/l |
| 29 May 2026, 14:44 | 4.76 | 4.76 mg/l |
| 18 Mar 2026, 13:00 | 2.78 | 2.78 mg/l |
| 10 Feb 2026, 14:31 | 3.48 | 3.48 mg/l |
| 9 Jan 2026, 12:09 | 3.96 | 3.96 mg/l |
| 3 Mar 2025, 11:04 | 2.98 | 2.98 mg/l |
| 4 Feb 2025, 11:39 | 3.67 | 3.67 mg/l |
| 28 Jan 2025, 10:07 | 2.58 | 2.58 mg/l |
| 20 Nov 2024, 10:52 | 4.86 | 4.86 mg/l |
| 17 Oct 2024, 15:24 | 3.45 | 3.45 mg/l |
| 17 Sep 2024, 13:56 | 4.78 | 4.78 mg/l |
| 21 Aug 2024, 10:52 | 5.29 | 5.29 mg/l |
| 15 Jul 2024, 15:56 | 4.06 | 4.06 mg/l |
| 17 Jun 2024, 09:29 | 3.12 | 3.12 mg/l |
| 14 May 2024, 09:56 | 4.98 | 4.98 mg/l |
| 16 Apr 2024, 10:13 | 2.07 | 2.07 mg/l |
| 20 Mar 2024, 13:03 | 2.08 | 2.08 mg/l |
| 22 Feb 2024, 13:16 | 1.48 | 1.48 mg/l |
| 16 Jan 2024, 14:11 | 4.16 | 4.16 mg/l |
| 1 Dec 2023, 12:59 | 3.57 | 3.57 mg/l |
| 25 Oct 2023, 12:45 | 3.38 | 3.38 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.12 mg/l
Sampled 16 Jul 2026, 3 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 0.12 | 0.12 mg/l |
| 29 May 2026, 14:44 | 0.23 | 0.23 mg/l |
| 18 Mar 2026, 13:00 | 0.056 | 0.056 mg/l |
| 10 Feb 2026, 14:31 | 0.055 | 0.055 mg/l |
| 9 Jan 2026, 12:09 | 0.074 | 0.074 mg/l |
| 3 Mar 2025, 11:04 | 0.076 | 0.076 mg/l |
| 4 Feb 2025, 11:39 | 0.078 | 0.078 mg/l |
| 28 Jan 2025, 10:07 | 0.13 | 0.13 mg/l |
| 20 Nov 2024, 10:52 | 0.19 | 0.19 mg/l |
| 17 Oct 2024, 15:24 | 0.22 | 0.22 mg/l |
| 17 Sep 2024, 13:56 | 0.4 | 0.4 mg/l |
| 21 Aug 2024, 10:52 | 0.48 | 0.48 mg/l |
| 15 Jul 2024, 15:56 | 0.33 | 0.33 mg/l |
| 17 Jun 2024, 09:29 | 0.2 | 0.2 mg/l |
| 14 May 2024, 09:56 | 0.26 | 0.26 mg/l |
| 16 Apr 2024, 10:13 | 0.089 | 0.089 mg/l |
| 20 Mar 2024, 13:03 | 0.082 | 0.082 mg/l |
| 22 Feb 2024, 13:16 | 0.064 | 0.064 mg/l |
| 16 Jan 2024, 14:11 | 0.15 | 0.15 mg/l |
| 1 Dec 2023, 12:59 | 0.11 | 0.11 mg/l |
| 25 Oct 2023, 12:45 | 0.075 | 0.075 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
426 µS/cm
Sampled 16 Jul 2026, 3 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Jul 2026, 12:18 | 426 | 426 µS/cm |
| 29 May 2026, 14:44 | 404 | 404 µS/cm |
| 18 Mar 2026, 13:00 | 257 | 257 µS/cm |
| 10 Feb 2026, 14:31 | 279 | 279 µS/cm |
| 9 Jan 2026, 12:09 | 646 | 646 µS/cm |
| 3 Mar 2025, 11:04 | 293 | 293 µS/cm |
| 4 Feb 2025, 11:39 | 323 | 323 µS/cm |
| 28 Jan 2025, 10:07 | 280 | 280 µS/cm |
| 4 Dec 2024, 10:05 | 308 | 308 µS/cm |
| 20 Nov 2024, 10:52 | 440 | 440 µS/cm |
| 17 Oct 2024, 15:24 | 290 | 290 µS/cm |
| 17 Sep 2024, 13:56 | 396 | 396 µS/cm |
| 21 Aug 2024, 10:52 | 482 | 482 µS/cm |
| 15 Jul 2024, 15:56 | 399 | 399 µS/cm |
| 17 Jun 2024, 09:29 | 353 | 353 µS/cm |
| 14 May 2024, 09:56 | 463 | 463 µS/cm |
| 16 Apr 2024, 10:13 | 212 | 212 µS/cm |
| 20 Mar 2024, 13:03 | 204 | 204 µS/cm |
| 22 Feb 2024, 13:16 | 155 | 155 µS/cm |
| 16 Jan 2024, 14:11 | 342 | 342 µS/cm |
| 1 Dec 2023, 12:59 | 322 | 322 µS/cm |
| 25 Oct 2023, 12:45 | 255 | 255 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 107 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 22 | Oct 2023 – Jul 2026 | 89.3% 16 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Jul 2026 | 8.15 mg/l 16 Jul 2026 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Jul 2026 | 19.7 °C 16 Jul 2026 |
| pH 0061 | River water | 22 | Oct 2023 – Jul 2026 | 7.79 16 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Oct 2023 – Jul 2026 | below 0.03 mg/l 16 Jul 2026 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – Jul 2026 | 4.79 mg/l 16 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – Jul 2026 | 0.12 mg/l 16 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Jul 2026 | 426 µS/cm 16 Jul 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | May 2024 – Feb 2025 | below 0.004 µg/l 4 Feb 2025 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | May 2024 – Feb 2025 | below 0.005 µg/l 4 Feb 2025 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Oct 2023 – Jul 2026 | 95 mg/l 16 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Oct 2023 – Jul 2026 | below 0.00069 mg/l 16 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.7 mg/l 3 Mar 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| Nitrite as N 0118 | River water | 21 | Oct 2023 – Jul 2026 | 0.011 mg/l 16 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – Jul 2026 | 4.8 mg/l 16 Jul 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| Perfluorobutanoic acid 2995 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| Perfluorodecanoic acid 8892 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | May 2024 – Feb 2025 | below 0.005 µg/l 4 Feb 2025 |
| Perfluorododecanoic acid 8894 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoroheptanoic acid 8889 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorohexanoic acid 8888 | River water | 3 | May 2024 – Feb 2025 | 0.00069 µg/l 4 Feb 2025 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluorononanoic acid 8891 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | May 2024 – Feb 2025 | below 0.001 µg/l 4 Feb 2025 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | May 2024 – Feb 2025 | 0.00079 µg/l 4 Feb 2025 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | May 2024 – Feb 2025 | 0.00057 µg/l 4 Feb 2025 |
| Perfluorooctanoic acid 8890 | River water | 3 | May 2024 – Feb 2025 | 0.0023 µg/l 4 Feb 2025 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | May 2024 – Feb 2025 | below 0.0005 µg/l 4 Feb 2025 |
| Perfluoropentanoic acid 8887 | River water | 3 | May 2024 – Feb 2025 | 0.0011 µg/l 4 Feb 2025 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | May 2024 – Feb 2025 | below 0.006 µg/l 4 Feb 2025 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2024 – Feb 2025 | below 0.005 µg/l 4 Feb 2025 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | May 2024 – Feb 2025 | below 0.004 µg/l 4 Feb 2025 |
| Perfluoroundecanoic acid 8893 | River water | 3 | May 2024 – Feb 2025 | below 0.002 µg/l 4 Feb 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.004 µg/l 13 Jun 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 13 Jun 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0013 µg/l 13 Jun 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| N-methylperfluorooctanesulfonamide 2975 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluorobutanesulfonic acid 2972 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0011 µg/l 13 Jun 2024 |
| Perfluorobutanoic acid 2995 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0036 µg/l 13 Jun 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluorodecanesulfonic acid 2969 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| Perfluorodecanoic acid 8892 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| Perfluorododecane sulfonic acid 2968 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 13 Jun 2024 |
| Perfluorododecanoic acid 8894 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| Perfluoroheptanesulfonic acid 2967 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoroheptanoic acid 8889 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0011 µg/l 13 Jun 2024 |
| Perfluorohexanesulfonamide 2965 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.00054 µg/l 13 Jun 2024 |
| Perfluorohexanoic acid 8888 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0016 µg/l 13 Jun 2024 |
| Perfluorononanesulfonic acid 2963 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluorononanoic acid 8891 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| Perfluorooctadecanoic acid 2962 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 2024 |
| Perfluorooctanesulfonamide 2961 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 13 Jun 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0013 µg/l 13 Jun 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.0016 µg/l 13 Jun 2024 |
| Perfluorooctanoic acid 8890 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.004 µg/l 13 Jun 2024 |
| Perfluoropentanesulfonic acid 2957 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 13 Jun 2024 |
| Perfluoropentanoic acid 8887 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | 0.002 µg/l 13 Jun 2024 |
| Perfluorotetradecanoic acid 8895 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.006 µg/l 13 Jun 2024 |
| Perfluorotridecanoic acid 2955 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 13 Jun 2024 |
| Perfluoroundecane sulfonic acid 2953 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.004 µg/l 13 Jun 2024 |
| Perfluoroundecanoic acid 8893 | Pond / lake / reservoir water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 13 Jun 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.