Swale at A167 Topcliffe Bridge

EA name: SWALE AT A167 TOPCLIFFE BRIDGE
Environment Agency sampling point NE-49900188 · 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
10 Mar 2025, 10:2619 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 24 Oct 2026 and had nothing newer.
Samples banked
17 since 17 Oct 2023 Imported periods: 1 Oct 2023 – 24 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy)
Where
National Grid 439811, 475960As published, to the nearest 1 m. Open in a map
River, by its own name
Swale
River, by the map
River SwalePlaced on the river its name gives, 4 m from the line.
Next gauge downstream
Crakehill On the River Swale · 5.5 km along the river
Nearest gauge upstream
Kirby Wiske On the River Wiske · 14 km along the riverMaunby On the River Swale · 16 km along the river
Why it was sampled
Monitoring (national agency policy) (17 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

100.7%

Sampled 10 Mar 2025, 19 months ago · 17 results banked

9092.59597.5100102.5%202420252026no sample published after Mar 202517 Oct 2023, 12:36: 100.8%12 Dec 2023, 12:28: 91.6%16 Jan 2024, 11:25: 98%19 Feb 2024, 10:07: 98.9%22 Mar 2024, 12:04: 97.9%16 Apr 2024, 09:22: 97.1%16 May 2024, 15:02: 95.3%21 Jun 2024, 11:05: 96.4%15 Jul 2024, 14:35: 97.3%30 Aug 2024, 12:51: 95.8%26 Sep 2024, 10:17: 97.8%18 Oct 2024, 11:18: 91.2%20 Nov 2024, 13:25: 96.4%4 Dec 2024, 11:47: 95.7%23 Jan 2025, 09:38: 98.3%11 Feb 2025, 13:07: 99.8%10 Mar 2025, 10:26: 100.7%
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:26100.7 100.7%
11 Feb 2025, 13:0799.8 99.8%
23 Jan 2025, 09:3898.3 98.3%
4 Dec 2024, 11:4795.7 95.7%
20 Nov 2024, 13:2596.4 96.4%
18 Oct 2024, 11:1891.2 91.2%
26 Sep 2024, 10:1797.8 97.8%
30 Aug 2024, 12:5195.8 95.8%
15 Jul 2024, 14:3597.3 97.3%
21 Jun 2024, 11:0596.4 96.4%
16 May 2024, 15:0295.3 95.3%
16 Apr 2024, 09:2297.1 97.1%
22 Mar 2024, 12:0497.9 97.9%
19 Feb 2024, 10:0798.9 98.9%
16 Jan 2024, 11:2598 98%
12 Dec 2023, 12:2891.6 91.6%
17 Oct 2023, 12:36100.8 100.8%

Dissolved oxygen

as O2 · code 9924 · mg/l

11.9 mg/l

Sampled 10 Mar 2025, 19 months ago · 17 results banked

91011121314mg/l202420252026no sample published after Mar 202517 Oct 2023, 12:36: 11.9 mg/l12 Dec 2023, 12:28: 11.4 mg/l16 Jan 2024, 11:25: 13.1 mg/l19 Feb 2024, 10:07: 11.4 mg/l22 Mar 2024, 12:04: 11.3 mg/l16 Apr 2024, 09:22: 11.5 mg/l16 May 2024, 15:02: 9.42 mg/l21 Jun 2024, 11:05: 9.37 mg/l15 Jul 2024, 14:35: 9.5 mg/l30 Aug 2024, 12:51: 9.47 mg/l26 Sep 2024, 10:17: 10.5 mg/l18 Oct 2024, 11:18: 9.97 mg/l20 Nov 2024, 13:25: 12.4 mg/l4 Dec 2024, 11:47: 12 mg/l23 Jan 2025, 09:38: 12.6 mg/l11 Feb 2025, 13:07: 12.7 mg/l10 Mar 2025, 10:26: 11.9 mg/l
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:2611.9 11.9 mg/l
11 Feb 2025, 13:0712.7 12.7 mg/l
23 Jan 2025, 09:3812.6 12.6 mg/l
4 Dec 2024, 11:4712 12 mg/l
20 Nov 2024, 13:2512.4 12.4 mg/l
18 Oct 2024, 11:189.97 9.97 mg/l
26 Sep 2024, 10:1710.5 10.5 mg/l
30 Aug 2024, 12:519.47 9.47 mg/l
15 Jul 2024, 14:359.5 9.5 mg/l
21 Jun 2024, 11:059.37 9.37 mg/l
16 May 2024, 15:029.42 9.42 mg/l
16 Apr 2024, 09:2211.5 11.5 mg/l
22 Mar 2024, 12:0411.3 11.3 mg/l
19 Feb 2024, 10:0711.4 11.4 mg/l
16 Jan 2024, 11:2513.1 13.1 mg/l
12 Dec 2023, 12:2811.4 11.4 mg/l
17 Oct 2023, 12:3611.9 11.9 mg/l

Water temperature

code 0076 · °C

8 °C

Sampled 10 Mar 2025, 19 months ago · 17 results banked

05101520°C202420252026no sample published after Mar 202517 Oct 2023, 12:36: 8.2 °C12 Dec 2023, 12:28: 5.9 °C16 Jan 2024, 11:25: 3.1 °C19 Feb 2024, 10:07: 9.2 °C22 Mar 2024, 12:04: 8.9 °C16 Apr 2024, 09:22: 8 °C16 May 2024, 15:02: 15.8 °C21 Jun 2024, 11:05: 16.6 °C15 Jul 2024, 14:35: 16.4 °C30 Aug 2024, 12:51: 15.8 °C26 Sep 2024, 10:17: 12.1 °C18 Oct 2024, 11:18: 11.3 °C20 Nov 2024, 13:25: 4.6 °C4 Dec 2024, 11:47: 5.8 °C23 Jan 2025, 09:38: 4.9 °C11 Feb 2025, 13:07: 5.1 °C10 Mar 2025, 10:26: 8 °C
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:268 8 °C
11 Feb 2025, 13:075.1 5.1 °C
23 Jan 2025, 09:384.9 4.9 °C
4 Dec 2024, 11:475.8 5.8 °C
20 Nov 2024, 13:254.6 4.6 °C
18 Oct 2024, 11:1811.3 11.3 °C
26 Sep 2024, 10:1712.1 12.1 °C
30 Aug 2024, 12:5115.8 15.8 °C
15 Jul 2024, 14:3516.4 16.4 °C
21 Jun 2024, 11:0516.6 16.6 °C
16 May 2024, 15:0215.8 15.8 °C
16 Apr 2024, 09:228 8 °C
22 Mar 2024, 12:048.9 8.9 °C
19 Feb 2024, 10:079.2 9.2 °C
16 Jan 2024, 11:253.1 3.1 °C
12 Dec 2023, 12:285.9 5.9 °C
17 Oct 2023, 12:368.2 8.2 °C

pH

code 0061

8.32

Sampled 10 Mar 2025, 19 months ago · 17 results banked

7.67.888.28.4202420252026no sample published after Mar 202517 Oct 2023, 12:36: 8.0412 Dec 2023, 12:28: 7.7716 Jan 2024, 11:25: 8.1819 Feb 2024, 10:07: 7.8522 Mar 2024, 12:04: 8.0516 Apr 2024, 09:22: 8.1516 May 2024, 15:02: 8.0121 Jun 2024, 11:05: 8.115 Jul 2024, 14:35: 7.8930 Aug 2024, 12:51: 7.8726 Sep 2024, 10:17: 7.818 Oct 2024, 11:18: 7.920 Nov 2024, 13:25: 8.214 Dec 2024, 11:47: 8.1423 Jan 2025, 09:38: 8.111 Feb 2025, 13:07: 8.110 Mar 2025, 10:26: 8.32
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:268.32 8.32
11 Feb 2025, 13:078.1 8.1
23 Jan 2025, 09:388.1 8.1
4 Dec 2024, 11:478.14 8.14
20 Nov 2024, 13:258.21 8.21
18 Oct 2024, 11:187.9 7.9
26 Sep 2024, 10:177.8 7.8
30 Aug 2024, 12:517.87 7.87
15 Jul 2024, 14:357.89 7.89
21 Jun 2024, 11:058.1 8.1
16 May 2024, 15:028.01 8.01
16 Apr 2024, 09:228.15 8.15
22 Mar 2024, 12:048.05 8.05
19 Feb 2024, 10:077.85 7.85
16 Jan 2024, 11:258.18 8.18
12 Dec 2023, 12:287.77 7.77
17 Oct 2023, 12:368.04 8.04

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 10 Mar 2025, 19 months ago · 17 results banked

0.020.040.060.080.1mg/l202420252026no sample published after Mar 202517 Oct 2023, 12:36: below 0.03 mg/l (not detected above this)12 Dec 2023, 12:28: 0.061 mg/l16 Jan 2024, 11:25: 0.054 mg/l19 Feb 2024, 10:07: 0.044 mg/l22 Mar 2024, 12:04: 0.04 mg/l16 Apr 2024, 09:22: 0.042 mg/l16 May 2024, 15:02: 0.092 mg/l21 Jun 2024, 11:05: below 0.03 mg/l (not detected above this)15 Jul 2024, 14:35: 0.049 mg/l30 Aug 2024, 12:51: below 0.03 mg/l (not detected above this)26 Sep 2024, 10:17: 0.049 mg/l18 Oct 2024, 11:18: below 0.03 mg/l (not detected above this)20 Nov 2024, 13:25: below 0.03 mg/l (not detected above this)4 Dec 2024, 11:47: below 0.03 mg/l (not detected above this)23 Jan 2025, 09:38: 0.047 mg/l11 Feb 2025, 13:07: 0.035 mg/l10 Mar 2025, 10:26: below 0.03 mg/l (not detected above this)
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:26<0.03 below 0.03 mg/l (not detected above this)
11 Feb 2025, 13:070.035 0.035 mg/l
23 Jan 2025, 09:380.047 0.047 mg/l
4 Dec 2024, 11:47<0.03 below 0.03 mg/l (not detected above this)
20 Nov 2024, 13:25<0.03 below 0.03 mg/l (not detected above this)
18 Oct 2024, 11:18<0.03 below 0.03 mg/l (not detected above this)
26 Sep 2024, 10:170.049 0.049 mg/l
30 Aug 2024, 12:51<0.03 below 0.03 mg/l (not detected above this)
15 Jul 2024, 14:350.049 0.049 mg/l
21 Jun 2024, 11:05<0.03 below 0.03 mg/l (not detected above this)
16 May 2024, 15:020.092 0.092 mg/l
16 Apr 2024, 09:220.042 0.042 mg/l
22 Mar 2024, 12:040.04 0.04 mg/l
19 Feb 2024, 10:070.044 0.044 mg/l
16 Jan 2024, 11:250.054 0.054 mg/l
12 Dec 2023, 12:280.061 0.061 mg/l
17 Oct 2023, 12:36<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

3.38 mg/l

Sampled 10 Mar 2025, 19 months ago · 16 results banked

12345mg/l202420252026no sample published after Mar 202517 Oct 2023, 12:36: 2.3 mg/l12 Dec 2023, 12:28: 3.38 mg/l16 Jan 2024, 11:25: 4.18 mg/l19 Feb 2024, 10:07: 2.69 mg/l22 Mar 2024, 12:04: 2.68 mg/l16 Apr 2024, 09:22: 1.29 mg/l16 May 2024, 15:02: 2.88 mg/l21 Jun 2024, 11:05: 2.98 mg/l15 Jul 2024, 14:35: 3.27 mg/l30 Aug 2024, 12:51: 1.79 mg/l26 Sep 2024, 10:17: 1.99 mg/l18 Oct 2024, 11:18: 1.59 mg/l20 Nov 2024, 13:25: 3.18 mg/l23 Jan 2025, 09:38: 3.58 mg/l11 Feb 2025, 13:07: 3.88 mg/l10 Mar 2025, 10:26: 3.38 mg/l
Every result (16)
SampledResult as publishedReads as
10 Mar 2025, 10:263.38 3.38 mg/l
11 Feb 2025, 13:073.88 3.88 mg/l
23 Jan 2025, 09:383.58 3.58 mg/l
20 Nov 2024, 13:253.18 3.18 mg/l
18 Oct 2024, 11:181.59 1.59 mg/l
26 Sep 2024, 10:171.99 1.99 mg/l
30 Aug 2024, 12:511.79 1.79 mg/l
15 Jul 2024, 14:353.27 3.27 mg/l
21 Jun 2024, 11:052.98 2.98 mg/l
16 May 2024, 15:022.88 2.88 mg/l
16 Apr 2024, 09:221.29 1.29 mg/l
22 Mar 2024, 12:042.68 2.68 mg/l
19 Feb 2024, 10:072.69 2.69 mg/l
16 Jan 2024, 11:254.18 4.18 mg/l
12 Dec 2023, 12:283.38 3.38 mg/l
17 Oct 2023, 12:362.3 2.3 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.031 mg/l

Sampled 10 Mar 2025, 19 months ago · 17 results banked

0.020.040.060.080.1mg/l202420252026no sample published after Mar 202517 Oct 2023, 12:36: 0.062 mg/l12 Dec 2023, 12:28: 0.06 mg/l16 Jan 2024, 11:25: 0.048 mg/l19 Feb 2024, 10:07: 0.034 mg/l22 Mar 2024, 12:04: 0.039 mg/l16 Apr 2024, 09:22: 0.033 mg/l16 May 2024, 15:02: 0.043 mg/l21 Jun 2024, 11:05: 0.063 mg/l15 Jul 2024, 14:35: 0.1 mg/l30 Aug 2024, 12:51: 0.067 mg/l26 Sep 2024, 10:17: 0.08 mg/l18 Oct 2024, 11:18: 0.048 mg/l20 Nov 2024, 13:25: 0.036 mg/l4 Dec 2024, 11:47: 0.053 mg/l23 Jan 2025, 09:38: 0.046 mg/l11 Feb 2025, 13:07: 0.041 mg/l10 Mar 2025, 10:26: 0.031 mg/l
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:260.031 0.031 mg/l
11 Feb 2025, 13:070.041 0.041 mg/l
23 Jan 2025, 09:380.046 0.046 mg/l
4 Dec 2024, 11:470.053 0.053 mg/l
20 Nov 2024, 13:250.036 0.036 mg/l
18 Oct 2024, 11:180.048 0.048 mg/l
26 Sep 2024, 10:170.08 0.08 mg/l
30 Aug 2024, 12:510.067 0.067 mg/l
15 Jul 2024, 14:350.1 0.1 mg/l
21 Jun 2024, 11:050.063 0.063 mg/l
16 May 2024, 15:020.043 0.043 mg/l
16 Apr 2024, 09:220.033 0.033 mg/l
22 Mar 2024, 12:040.039 0.039 mg/l
19 Feb 2024, 10:070.034 0.034 mg/l
16 Jan 2024, 11:250.048 0.048 mg/l
12 Dec 2023, 12:280.06 0.06 mg/l
17 Oct 2023, 12:360.062 0.062 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

567 µS/cm

Sampled 10 Mar 2025, 19 months ago · 17 results banked

0200400600µS/cm202420252026no sample published after Mar 202517 Oct 2023, 12:36: 472 µS/cm12 Dec 2023, 12:28: 381 µS/cm16 Jan 2024, 11:25: 575 µS/cm19 Feb 2024, 10:07: 395 µS/cm22 Mar 2024, 12:04: 442 µS/cm16 Apr 2024, 09:22: 107 µS/cm16 May 2024, 15:02: 463 µS/cm21 Jun 2024, 11:05: 515 µS/cm15 Jul 2024, 14:35: 543 µS/cm30 Aug 2024, 12:51: 352 µS/cm26 Sep 2024, 10:17: 278 µS/cm18 Oct 2024, 11:18: 213 µS/cm20 Nov 2024, 13:25: 580 µS/cm4 Dec 2024, 11:47: 405 µS/cm23 Jan 2025, 09:38: 547 µS/cm11 Feb 2025, 13:07: 572 µS/cm10 Mar 2025, 10:26: 567 µS/cm
Every result (17)
SampledResult as publishedReads as
10 Mar 2025, 10:26567 567 µS/cm
11 Feb 2025, 13:07572 572 µS/cm
23 Jan 2025, 09:38547 547 µS/cm
4 Dec 2024, 11:47405 405 µS/cm
20 Nov 2024, 13:25580 580 µS/cm
18 Oct 2024, 11:18213 213 µS/cm
26 Sep 2024, 10:17278 278 µS/cm
30 Aug 2024, 12:51352 352 µS/cm
15 Jul 2024, 14:35543 543 µS/cm
21 Jun 2024, 11:05515 515 µS/cm
16 May 2024, 15:02463 463 µS/cm
16 Apr 2024, 09:22107 107 µS/cm
22 Mar 2024, 12:04442 442 µS/cm
19 Feb 2024, 10:07395 395 µS/cm
16 Jan 2024, 11:25575 575 µS/cm
12 Dec 2023, 12:28381 381 µS/cm
17 Oct 2023, 12:36472 472 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
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 17 Oct 2023 – Mar 2025 100.7% 10 Mar 2025
Oxygen, Dissolved as O2 9924 River water 17 Oct 2023 – Mar 2025 11.9 mg/l 10 Mar 2025
Temperature of Water 0076 River water 17 Oct 2023 – Mar 2025 8 °C 10 Mar 2025
pH 0061 River water 17 Oct 2023 – Mar 2025 8.32 10 Mar 2025
Ammoniacal Nitrogen as N 0111 River water 17 Oct 2023 – Mar 2025 below 0.03 mg/l 10 Mar 2025
Nitrate as N 0117 River water 16 Oct 2023 – Mar 2025 3.38 mg/l 10 Mar 2025
Orthophosphate, reactive as P 0180 River water 17 Oct 2023 – Mar 2025 0.031 mg/l 10 Mar 2025
Conductivity at 25 C 0077 River water 17 Oct 2023 – Mar 2025 567 µS/cm 10 Mar 2025
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
2H,2H,3H,3H-Perfluorooctanoic acid 2989 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
3-Perfluoroheptylpropanoic acid 2925 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
3:3 Fluorotelomer carboxylic acid 2926 River water 3 May 2024 – Sep 2024 below 0.004 µg/l 26 Sep 2024
4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 River water 3 May 2024 – Sep 2024 below 0.005 µg/l 26 Sep 2024
4:2 Fluorotelomer sulfonic acid 2987 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
6:2 Fluorotelomer sulfonic acid 2984 River water 3 May 2024 – Sep 2024 0.028 µg/l 26 Sep 2024
8:2 Fluorotelomer sulfonic acid 2983 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Alkalinity to pH 4.5 as CaCO3 0162 River water 17 Oct 2023 – Mar 2025 200 mg/l 10 Mar 2025
Ammonia un-ionised as N 0119 River water 17 Oct 2023 – Mar 2025 below 0.00047 mg/l 10 Mar 2025
BOD : 5 Day ATU 0085 River water 14 Feb 2024 – Mar 2025 1.6 mg/l 10 Mar 2025
Hexafluoropropylene oxide dimer acid (Gen X) 2981 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
N-Ethylperfluorooctanesulfonamide 2977 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
N-methylperfluorooctanesulfonamide 2975 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
Nitrite as N 0118 River water 17 Oct 2023 – Mar 2025 0.016 mg/l 10 Mar 2025
Nitrogen, Total Oxidised as N 0116 River water 16 Oct 2023 – Mar 2025 3.4 mg/l 10 Mar 2025
Perfluoro(2-ethoxyethane)sulfonic acid 2924 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoro(4-methoxybutanoic) acid 2923 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoro-3,6-dioxaheptanoic acid 2922 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoro-3-methoxypropanoic acid 2921 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoro-4-ethylcyclohexanesulfonic acid 2973 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorobutanesulfonic acid 2972 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
Perfluorobutanoic acid 2995 River water 2 Aug 2024 – Sep 2024 0.0039 µg/l 26 Sep 2024
Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorodecanesulfonic acid 2969 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
Perfluorodecanoic acid 8892 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
Perfluorododecane sulfonic acid 2968 River water 3 May 2024 – Sep 2024 below 0.005 µg/l 26 Sep 2024
Perfluorododecanoic acid 8894 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
Perfluoroheptanesulfonic acid 2967 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoroheptanoic acid 8889 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
Perfluorohexanesulfonamide 2965 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorohexanesulfonic acid (B) 2944 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorohexanesulfonic acid (L) 2964 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorohexanoic acid 8888 River water 3 May 2024 – Sep 2024 0.0011 µg/l 26 Sep 2024
Perfluorononanesulfonic acid 2963 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorononanoic acid 8891 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
Perfluorooctadecanoic acid 2962 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 2024
Perfluorooctanesulfonamide 2961 River water 3 May 2024 – Sep 2024 below 0.001 µg/l 26 Sep 2024
Perfluorooctanesulfonic acid (branched) 2960 River water 2 Aug 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluorooctanesulfonic acid (linear) 2959 River water 3 May 2024 – Sep 2024 0.00055 µg/l 26 Sep 2024
Perfluorooctanoic acid 8890 River water 3 May 2024 – Sep 2024 0.0017 µg/l 26 Sep 2024
Perfluoropentanesulfonic acid 2957 River water 3 May 2024 – Sep 2024 below 0.0005 µg/l 26 Sep 2024
Perfluoropentanoic acid 8887 River water 3 May 2024 – Sep 2024 0.002 µg/l 26 Sep 2024
Perfluorotetradecanoic acid 8895 River water 3 May 2024 – Sep 2024 below 0.006 µg/l 26 Sep 2024
Perfluorotridecanoic acid 2955 River water 3 May 2024 – Sep 2024 below 0.005 µg/l 26 Sep 2024
Perfluoroundecane sulfonic acid 2953 River water 3 May 2024 – Sep 2024 below 0.004 µg/l 26 Sep 2024
Perfluoroundecanoic acid 8893 River water 3 May 2024 – Sep 2024 below 0.002 µg/l 26 Sep 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.