Arnolds Farm
EA name: RSN1401 ARNOLDS FARM
Environment Agency sampling point TH-RSN1401 · 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
- 14 Aug 2026, 08:4055 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 14 since 31 Jan 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (national agency policy)
- Where
- National Grid 549076, 197900As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- River RodingPlaced by position alone, on a line whose map name differs from its own, 7 m from the line.
- Next gauge downstream
- Abridge On the River Roding · 3.5 km along the river
- Nearest gauge upstream
- Shonks Mill Bridge On the River Roding · 5.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (9 samples)
Planned investigation (national agency policy) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
50.6%
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 50.6 | 50.6% |
| 6 Jul 2026, 09:38 | 71.5 | 71.5% |
| 3 Jun 2026, 09:16 | 67.2 | 67.2% |
| 20 May 2026, 09:00 | 86.3 | 86.3% |
| 23 Apr 2026, 12:14 | 100.3 | 100.3% |
| 12 Dec 2025, 14:04 | 87.3 | 87.3% |
| 21 Nov 2025, 11:03 | 88.5 | 88.5% |
| 20 Oct 2025, 10:38 | 67.3 | 67.3% |
| 29 Sep 2025, 11:09 | 72.1 | 72.1% |
| 2 Jun 2025, 10:05 | 74.5 | 74.5% |
| 16 May 2025, 12:08 | 88.1 | 88.1% |
| 9 Apr 2025, 10:25 | 101.5 | 101.5% |
| 25 Mar 2025, 14:03 | 116 | 116% |
| 31 Jan 2025, 12:07 | 97 | 97% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.81 mg/l
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 4.81 | 4.81 mg/l |
| 6 Jul 2026, 09:38 | 6.54 | 6.54 mg/l |
| 3 Jun 2026, 09:16 | 6.52 | 6.52 mg/l |
| 20 May 2026, 09:00 | 9.11 | 9.11 mg/l |
| 23 Apr 2026, 12:14 | 10.7 | 10.7 mg/l |
| 12 Dec 2025, 14:04 | 10.1 | 10.1 mg/l |
| 21 Nov 2025, 11:03 | 11 | 11 mg/l |
| 20 Oct 2025, 10:38 | 7.12 | 7.12 mg/l |
| 29 Sep 2025, 11:09 | 7.85 | 7.85 mg/l |
| 2 Jun 2025, 10:05 | 7.24 | 7.24 mg/l |
| 16 May 2025, 12:08 | 8.87 | 8.87 mg/l |
| 9 Apr 2025, 10:25 | 11.6 | 11.6 mg/l |
| 25 Mar 2025, 14:03 | 13.1 | 13.1 mg/l |
| 31 Jan 2025, 12:07 | 12.2 | 12.2 mg/l |
Water temperature
code 0076 · °C
17.7 °C
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 17.7 | 17.7 °C |
| 6 Jul 2026, 09:38 | 19.6 | 19.6 °C |
| 3 Jun 2026, 09:16 | 16.7 | 16.7 °C |
| 20 May 2026, 09:00 | 12.8 | 12.8 °C |
| 23 Apr 2026, 12:14 | 12.5 | 12.5 °C |
| 12 Dec 2025, 14:04 | 9 | 9 °C |
| 21 Nov 2025, 11:03 | 5.9 | 5.9 °C |
| 20 Oct 2025, 10:38 | 12.7 | 12.7 °C |
| 29 Sep 2025, 11:09 | 11.4 | 11.4 °C |
| 2 Jun 2025, 10:05 | 16.6 | 16.6 °C |
| 16 May 2025, 12:08 | 14.9 | 14.9 °C |
| 9 Apr 2025, 10:25 | 9.2 | 9.2 °C |
| 25 Mar 2025, 14:03 | 9.9 | 9.9 °C |
| 31 Jan 2025, 12:07 | 5.6 | 5.6 °C |
pH
code 0061
7.9
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 7.9 | 7.9 |
| 6 Jul 2026, 09:38 | 7.9 | 7.9 |
| 3 Jun 2026, 09:16 | 7.9 | 7.9 |
| 20 May 2026, 09:00 | 8.1 | 8.1 |
| 23 Apr 2026, 12:14 | 8.3 | 8.3 |
| 12 Dec 2025, 14:04 | 8 | 8 |
| 21 Nov 2025, 11:03 | 7.9 | 7.9 |
| 20 Oct 2025, 10:38 | 7.8 | 7.8 |
| 29 Sep 2025, 11:09 | 7.9 | 7.9 |
| 2 Jun 2025, 10:05 | 8 | 8 |
| 16 May 2025, 12:08 | 8.1 | 8.1 |
| 9 Apr 2025, 10:25 | 6.1 | 6.1 |
| 25 Mar 2025, 14:03 | 8.5 | 8.5 |
| 31 Jan 2025, 12:07 | 8.12 | 8.12 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jul 2026, 09:38 | 0.033 | 0.033 mg/l |
| 3 Jun 2026, 09:16 | 0.065 | 0.065 mg/l |
| 20 May 2026, 09:00 | 0.038 | 0.038 mg/l |
| 23 Apr 2026, 12:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Dec 2025, 14:04 | 0.039 | 0.039 mg/l |
| 21 Nov 2025, 11:03 | 0.042 | 0.042 mg/l |
| 20 Oct 2025, 10:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Sep 2025, 11:09 | 0.099 | 0.099 mg/l |
| 2 Jun 2025, 10:05 | 0.061 | 0.061 mg/l |
| 16 May 2025, 12:08 | 0.052 | 0.052 mg/l |
| 9 Apr 2025, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Mar 2025, 14:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jan 2025, 12:07 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.07 mg/l
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 3.07 | 3.07 mg/l |
| 6 Jul 2026, 09:38 | 1.29 | 1.29 mg/l |
| 3 Jun 2026, 09:16 | 2.57 | 2.57 mg/l |
| 20 May 2026, 09:00 | 6.27 | 6.27 mg/l |
| 23 Apr 2026, 12:14 | 6.68 | 6.68 mg/l |
| 12 Dec 2025, 14:04 | 19 | 19 mg/l |
| 21 Nov 2025, 11:03 | 14 | 14 mg/l |
| 20 Oct 2025, 10:38 | 4.78 | 4.78 mg/l |
| 29 Sep 2025, 11:09 | 4.18 | 4.18 mg/l |
| 2 Jun 2025, 10:05 | 4.67 | 4.67 mg/l |
| 16 May 2025, 12:08 | 5.86 | 5.86 mg/l |
| 9 Apr 2025, 10:25 | 7.48 | 7.48 mg/l |
| 25 Mar 2025, 14:03 | 8.08 | 8.08 mg/l |
| 31 Jan 2025, 12:07 | 14 | 14 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
1.1 mg/l
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 1.1 | 1.1 mg/l |
| 6 Jul 2026, 09:38 | 0.91 | 0.91 mg/l |
| 3 Jun 2026, 09:16 | 0.82 | 0.82 mg/l |
| 20 May 2026, 09:00 | 0.74 | 0.74 mg/l |
| 23 Apr 2026, 12:14 | 0.5 | 0.5 mg/l |
| 12 Dec 2025, 14:04 | 0.2 | 0.2 mg/l |
| 21 Nov 2025, 11:03 | 0.4 | 0.4 mg/l |
| 20 Oct 2025, 10:38 | 0.99 | 0.99 mg/l |
| 29 Sep 2025, 11:09 | 0.93 | 0.93 mg/l |
| 2 Jun 2025, 10:05 | 0.74 | 0.74 mg/l |
| 16 May 2025, 12:08 | 0.58 | 0.58 mg/l |
| 9 Apr 2025, 10:25 | 0.27 | 0.27 mg/l |
| 25 Mar 2025, 14:03 | 0.15 | 0.15 mg/l |
| 31 Jan 2025, 12:07 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1154 µS/cm
Sampled 14 Aug 2026, 55 days ago · 14 results banked
Every result (14)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 08:40 | 1154 | 1154 µS/cm |
| 6 Jul 2026, 09:38 | 962 | 962 µS/cm |
| 3 Jun 2026, 09:16 | 908 | 908 µS/cm |
| 20 May 2026, 09:00 | 929 | 929 µS/cm |
| 23 Apr 2026, 12:14 | 888 | 888 µS/cm |
| 12 Dec 2025, 14:04 | 844 | 844 µS/cm |
| 21 Nov 2025, 11:03 | 774 | 774 µS/cm |
| 20 Oct 2025, 10:38 | 950 | 950 µS/cm |
| 29 Sep 2025, 11:09 | 861 | 861 µS/cm |
| 2 Jun 2025, 10:05 | 937 | 937 µS/cm |
| 16 May 2025, 12:08 | 926 | 926 µS/cm |
| 9 Apr 2025, 10:25 | 857 | 857 µS/cm |
| 25 Mar 2025, 14:03 | 883 | 883 µS/cm |
| 31 Jan 2025, 12:07 | 787 | 787 µS/cm |
Everything measured here
125 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 125 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 14 | Jan 2025 – Aug 2026 | 50.6% 14 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 14 | Jan 2025 – Aug 2026 | 4.81 mg/l 14 Aug 2026 |
| Temperature of Water 0076 | River water | 14 | Jan 2025 – Aug 2026 | 17.7 °C 14 Aug 2026 |
| pH 0061 | River water | 14 | Jan 2025 – Aug 2026 | 7.9 14 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 14 | Jan 2025 – Aug 2026 | below 0.03 mg/l 14 Aug 2026 |
| Nitrate as N 0117 | River water | 14 | Jan 2025 – Aug 2026 | 3.07 mg/l 14 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 14 | Jan 2025 – Aug 2026 | 1.1 mg/l 14 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 14 | Jan 2025 – Aug 2026 | 1154 µS/cm 14 Aug 2026 |
| 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 | River water | 7 | Mar 2025 – Dec 2025 | below 0.02 µg/l 12 Dec 2025 |
| 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 2-Phenoxypropionic acid :- {PPA} 6673 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| 4-Chlorophenoxyacetic acid 3547 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 4-Nonylphenol Branched 9190 | River water | 8 | Mar 2025 – Dec 2025 | below 0.04 µg/l 12 Dec 2025 |
| 4-Phenoxybutyric acid :- {PBA} 6672 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| 4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 | River water | 8 | Mar 2025 – Dec 2025 | below 0.01 µg/l 12 Dec 2025 |
| Aldicarb 9344 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Aldicarb sulfoxide 8806 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 14 | Jan 2025 – Aug 2026 | 290 mg/l 14 Aug 2026 |
| Aluminium, Dissolved 6037 | River water | 8 | Mar 2025 – Dec 2025 | below 20 µg/l 12 Dec 2025 |
| Aminomethylphosphonic acid 7125 | River water | 8 | Mar 2025 – Dec 2025 | 0.33 µg/l 12 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 14 | Jan 2025 – Aug 2026 | below 0.00077 mg/l 14 Aug 2026 |
| Asulam 3004 | River water | 7 | Mar 2025 – Dec 2025 | below 0.2 µg/l 12 Dec 2025 |
| Azoxystrobin 5050 | River water | 7 | Mar 2025 – Dec 2025 | below 0.2 µg/l 12 Dec 2025 |
| Barium, Dissolved 9446 | River water | 13 | Mar 2025 – Aug 2026 | 34 µg/l 14 Aug 2026 |
| Benazolin 3792 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Bentazone 4065 | River water | 7 | Mar 2025 – Dec 2025 | 0.018 µg/l 12 Dec 2025 |
| Benzo(a)Pyrene 6399 | River water | 7 | Mar 2025 – Dec 2025 | 0.0012 µg/l 12 Dec 2025 |
| Benzo(b)Fluoranthene 0731 | River water | 7 | Mar 2025 – Dec 2025 | 0.0011 µg/l 12 Dec 2025 |
| Benzo(g,h,i)Perylene 0714 | River water | 7 | Mar 2025 – Dec 2025 | 0.0015 µg/l 12 Dec 2025 |
| Benzo(k)Fluoranthene 0733 | River water | 7 | Mar 2025 – Dec 2025 | 0.00053 µg/l 12 Dec 2025 |
| Boron, Dissolved 9447 | River water | 13 | Mar 2025 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Bromoxynil 6449 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Cadmium 0108 | River water | 5 | Apr 2026 – Aug 2026 | below 0.1 µg/l 14 Aug 2026 |
| Cadmium, Dissolved 0106 | River water | 13 | Mar 2025 – Aug 2026 | below 0.1 µg/l 14 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 13 | Mar 2025 – Aug 2026 | 130 mg/l 14 Aug 2026 |
| Carbaryl 9343 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Carbendazim 3475 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Carbetamide 9073 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Carbofuran 3086 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 13 | Jan 2025 – Aug 2026 | 9.8 mg/l 14 Aug 2026 |
| Chloridazon 6760 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Chloride 0172 | River water | 9 | Jan 2025 – Dec 2025 | 51 mg/l 12 Dec 2025 |
| Chlorotoluron 9348 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Chloroxuron 3399 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Chromium, Dissolved 3409 | River water | 8 | Mar 2025 – Dec 2025 | below 0.5 µg/l 12 Dec 2025 |
| cis-Permethrin 9341 | River water | 7 | Mar 2025 – Nov 2025 | below 0.0001 µg/l 21 Nov 2025 |
| Clopyralid 6620 | River water | 7 | Mar 2025 – Dec 2025 | 0.011 µg/l 12 Dec 2025 |
| Copper 6452 | River water | 5 | Apr 2026 – Aug 2026 | 3.2 µg/l 14 Aug 2026 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Mar 2025 – Dec 2025 | 0.14 µg/l 12 Dec 2025 |
| Copper, Dissolved 6450 | River water | 13 | Mar 2025 – Aug 2026 | 2.8 µg/l 14 Aug 2026 |
| Cypermethrin 0073 | River water | 6 | Mar 2025 – Dec 2025 | below 0.00002 µg/l 12 Dec 2025 |
| Cypermethrin Identification 5446 | River water | 6 | Mar 2025 – Dec 2025 | 1 text result 12 Dec 2025 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 8 | Mar 2025 – Dec 2025 | below 0.2 µg/l 12 Dec 2025 |
| Dicamba 3550 | River water | 7 | Mar 2025 – Dec 2025 | below 0.01 µg/l 12 Dec 2025 |
| Dichlorprop :- {2,4-DP} 3551 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Diflurobenzuron 9345 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Diuron 3811 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Ethiofencarb 6955 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Ethirimol 5047 | River water | 7 | Mar 2025 – Dec 2025 | below 0.5 µg/l 12 Dec 2025 |
| Fenoprop 3552 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Fenuron 9339 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Flow Type 2896 | River water | 9 | Jan 2025 – Dec 2025 | Moderate Flow 12 Dec 2025 |
| Fluoranthene 0736 | River water | 7 | Mar 2025 – Dec 2025 | 0.0029 µg/l 12 Dec 2025 |
| Fluroxypyr 4064 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 8 | Mar 2025 – Dec 2025 | 1 text result 12 Dec 2025 |
| Glyphosate 3007 | River water | 8 | Mar 2025 – Dec 2025 | 0.13 µg/l 12 Dec 2025 |
| Hardness, Calcium 0163 | River water | 8 | Mar 2025 – Dec 2025 | 325 mg/l 12 Dec 2025 |
| Hardness, Total as CaCO3 0158 | River water | 13 | Mar 2025 – Aug 2026 | 378 mg/l 14 Aug 2026 |
| Imazapyr 7025 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 7 | Mar 2025 – Dec 2025 | 0.0013 µg/l 12 Dec 2025 |
| Ioxynil 9068 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Iron, Dissolved 6460 | River water | 13 | Mar 2025 – Aug 2026 | 37 µg/l 14 Aug 2026 |
| Isoproturon 3117 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Lead 0050 | River water | 5 | Apr 2026 – Aug 2026 | below 2 µg/l 14 Aug 2026 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Mar 2025 – Dec 2025 | 0.02 µg/l 12 Dec 2025 |
| Lead, Dissolved 0052 | River water | 13 | Mar 2025 – Aug 2026 | below 2 µg/l 14 Aug 2026 |
| Linuron 3118 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Lithium, Dissolved 4201 | River water | 13 | Mar 2025 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 13 | Mar 2025 – Aug 2026 | 13 mg/l 14 Aug 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Mar 2025 – Dec 2025 | 2.8 µg/l 12 Dec 2025 |
| Manganese, Dissolved 6458 | River water | 13 | Mar 2025 – Aug 2026 | 29 µg/l 14 Aug 2026 |
| MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 | River water | 7 | Mar 2025 – Dec 2025 | below 0.005 µg/l 12 Dec 2025 |
| Mecoprop 3549 | River water | 7 | Mar 2025 – Dec 2025 | 0.0092 µg/l 12 Dec 2025 |
| Methabenzthiazuron 7053 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Methiocarb 6971 | River water | 7 | Mar 2025 – Dec 2025 | below 0.01 µg/l 12 Dec 2025 |
| Methomyl 6972 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Metoxuron 3130 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Metsulfuron-methyl 9861 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Monolinuron 3925 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Monuron 3400 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Neburon 9756 | River water | 7 | Mar 2025 – Dec 2025 | below 0.1 µg/l 12 Dec 2025 |
| Nickel 6462 | River water | 5 | Apr 2026 – Aug 2026 | 6.6 µg/l 14 Aug 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Mar 2025 – Dec 2025 | 0.58 µg/l 12 Dec 2025 |
| Nickel, Dissolved 3410 | River water | 13 | Mar 2025 – Aug 2026 | 6.1 µg/l 14 Aug 2026 |
| Nitrite as N 0118 | River water | 14 | Jan 2025 – Aug 2026 | 0.031 mg/l 14 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 9 | Jan 2025 – Dec 2025 | 22 mg/l 12 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 14 | Jan 2025 – Aug 2026 | 3.1 mg/l 14 Aug 2026 |
| Oxamyl 6980 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Perfluorooctanoate anion 9274 | River water | 8 | Mar 2025 – Dec 2025 | below 0.003 µg/l 12 Dec 2025 |
| Perfluorooctylsulphonate anion 9276 | River water | 8 | Mar 2025 – Dec 2025 | 0.0028 µg/l 12 Dec 2025 |
| pH : In Situ 3169 | River water | 5 | Apr 2026 – Aug 2026 | 7.4 14 Aug 2026 |
| Phenoxyacetic acid :- {PAA} 6671 | River water | 7 | Mar 2025 – Dec 2025 | 0.069 µg/l 12 Dec 2025 |
| Phosphorus, Total as P 0348 | River water | 9 | Jan 2025 – Dec 2025 | 0.21 mg/l 12 Dec 2025 |
| Picloram 9883 | River water | 7 | Mar 2025 – Dec 2025 | 0.014 µg/l 12 Dec 2025 |
| Potassium, Dissolved 0209 | River water | 13 | Mar 2025 – Aug 2026 | 14 mg/l 14 Aug 2026 |
| Propoxur 6987 | River water | 7 | Mar 2025 – Dec 2025 | below 0.05 µg/l 12 Dec 2025 |
| Silica, reactive as SiO2 0182 | River water | 9 | Jan 2025 – Dec 2025 | 9.5 mg/l 12 Dec 2025 |
| Sodium, Dissolved 0205 | River water | 13 | Mar 2025 – Aug 2026 | 87 mg/l 14 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Dec 2025 – Aug 2026 | 24 mg/l 14 Aug 2026 |
| Strontium, Filtered 6693 | River water | 13 | Mar 2025 – Aug 2026 | 700 µg/l 14 Aug 2026 |
| Sulcotrione 5042 | River water | 7 | Mar 2025 – Dec 2025 | below 1 µg/l 12 Dec 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 13 | Mar 2025 – Aug 2026 | 130 mg/l 14 Aug 2026 |
| trans-Permethrin 9342 | River water | 8 | Mar 2025 – Dec 2025 | below 0.0001 µg/l 12 Dec 2025 |
| Tributyl Tin as Cation 8944 | River water | 6 | Mar 2025 – Dec 2025 | below 0.00002 µg/l 12 Dec 2025 |
| Triclopyr 3555 | River water | 7 | Mar 2025 – Dec 2025 | 0.012 µg/l 12 Dec 2025 |
| Triclosan 5889 | River water | 8 | Mar 2025 – Dec 2025 | below 0.01 µg/l 12 Dec 2025 |
| Triphenyl Tin as Cation 5732 | River water | 6 | Mar 2025 – Dec 2025 | below 0.00002 µg/l 12 Dec 2025 |
| Zinc 6455 | River water | 5 | Apr 2026 – Aug 2026 | 6.6 µg/l 14 Aug 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Mar 2025 – Dec 2025 | 0.57 µg/l 12 Dec 2025 |
| Zinc, Dissolved 3408 | River water | 13 | Mar 2025 – Aug 2026 | below 5 µg/l 14 Aug 2026 |
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.