Rodden Brook upstream of Corsley Mill
EA name: RODDEN BROOK U/S CORSLEY MILL (also listed as “RSN1141 RODDEN BROOK U/S CORSLEY MILL”)
Environment Agency sampling point SW-RSN1141 · 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
- 13 Dec 2024, 12:0822 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
- 7 since 25 Jun 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 381915, 146918As published, to the nearest 1 m. Open in a map
- River, by its own name
- Rodden Brook
- River, by the map
- Rodden BrookPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Frome Rodden On the Somerset Frome · 4.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
94.3%
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 94.3 | 94.3% |
| 8 Nov 2024, 11:05 | 93 | 93% |
| 18 Oct 2024, 12:56 | 95.9 | 95.9% |
| 25 Sep 2024, 12:45 | 92.2 | 92.2% |
| 12 Aug 2024, 12:05 | 95.6 | 95.6% |
| 31 Jul 2024, 13:10 | 95.5 | 95.5% |
| 25 Jun 2024, 13:12 | 99.3 | 99.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.7 mg/l
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 10.7 | 10.7 mg/l |
| 8 Nov 2024, 11:05 | 10.5 | 10.5 mg/l |
| 18 Oct 2024, 12:56 | 10.3 | 10.3 mg/l |
| 25 Sep 2024, 12:45 | 9.62 | 9.62 mg/l |
| 12 Aug 2024, 12:05 | 9.68 | 9.68 mg/l |
| 31 Jul 2024, 13:10 | 9.62 | 9.62 mg/l |
| 25 Jun 2024, 13:12 | 9.88 | 9.88 mg/l |
Water temperature
code 0076 · °C
9.5 °C
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 9.5 | 9.5 °C |
| 8 Nov 2024, 11:05 | 9.9 | 9.9 °C |
| 18 Oct 2024, 12:56 | 12.2 | 12.2 °C |
| 25 Sep 2024, 12:45 | 13.3 | 13.3 °C |
| 12 Aug 2024, 12:05 | 14.7 | 14.7 °C |
| 31 Jul 2024, 13:10 | 14.9 | 14.9 °C |
| 25 Jun 2024, 13:12 | 15.5 | 15.5 °C |
pH
code 0061
8
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 8 | 8 |
| 8 Nov 2024, 11:05 | 8 | 8 |
| 18 Oct 2024, 12:56 | 8 | 8 |
| 25 Sep 2024, 12:45 | 8 | 8 |
| 12 Aug 2024, 12:05 | 8 | 8 |
| 31 Jul 2024, 13:10 | 8 | 8 |
| 25 Jun 2024, 13:12 | 8 | 8 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.12 mg/l
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 0.12 | 0.12 mg/l |
| 8 Nov 2024, 11:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2024, 12:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Sep 2024, 12:45 | 0.13 | 0.13 mg/l |
| 12 Aug 2024, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jul 2024, 13:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2024, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.76 mg/l
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 7.76 | 7.76 mg/l |
| 8 Nov 2024, 11:05 | 8.39 | 8.39 mg/l |
| 18 Oct 2024, 12:56 | 6.99 | 6.99 mg/l |
| 25 Sep 2024, 12:45 | 7.37 | 7.37 mg/l |
| 12 Aug 2024, 12:05 | 9.39 | 9.39 mg/l |
| 31 Jul 2024, 13:10 | 9.39 | 9.39 mg/l |
| 25 Jun 2024, 13:12 | 8.99 | 8.99 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.21 mg/l
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 0.21 | 0.21 mg/l |
| 8 Nov 2024, 11:05 | 0.16 | 0.16 mg/l |
| 18 Oct 2024, 12:56 | 0.2 | 0.2 mg/l |
| 25 Sep 2024, 12:45 | 0.43 | 0.43 mg/l |
| 12 Aug 2024, 12:05 | 0.17 | 0.17 mg/l |
| 31 Jul 2024, 13:10 | 0.18 | 0.18 mg/l |
| 25 Jun 2024, 13:12 | 0.17 | 0.17 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
641 µS/cm
Sampled 13 Dec 2024, 22 months ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Dec 2024, 12:08 | 641 | 641 µS/cm |
| 8 Nov 2024, 11:05 | 668 | 668 µS/cm |
| 18 Oct 2024, 12:56 | 586 | 586 µS/cm |
| 25 Sep 2024, 12:45 | 635 | 635 µS/cm |
| 12 Aug 2024, 12:05 | 665 | 665 µS/cm |
| 31 Jul 2024, 13:10 | 666 | 666 µS/cm |
| 25 Jun 2024, 13:12 | 672 | 672 µS/cm |
Everything measured here
121 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 121 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 7 | Jun 2024 – Dec 2024 | 94.3% 13 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 7 | Jun 2024 – Dec 2024 | 10.7 mg/l 13 Dec 2024 |
| Temperature of Water 0076 | River water | 7 | Jun 2024 – Dec 2024 | 9.5 °C 13 Dec 2024 |
| pH 0061 | River water | 7 | Jun 2024 – Dec 2024 | 8 13 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Jun 2024 – Dec 2024 | 0.12 mg/l 13 Dec 2024 |
| Nitrate as N 0117 | River water | 7 | Jun 2024 – Dec 2024 | 7.76 mg/l 13 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Jun 2024 – Dec 2024 | 0.21 mg/l 13 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 7 | Jun 2024 – Dec 2024 | 641 µS/cm 13 Dec 2024 |
| 17alpha ethynyloestradiol :- {EE2} 9899 | River water | 7 | Jun 2024 – Dec 2024 | below 0.03 nanogram per litre 13 Dec 2024 |
| 17beta oestradiol :- {E2} 9898 | River water | 7 | Jun 2024 – Dec 2024 | below 0.03 nanogram per litre 13 Dec 2024 |
| 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 | River water | 7 | Jun 2024 – Dec 2024 | below 0.02 µg/l 13 Dec 2024 |
| 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 2-Phenoxypropionic acid :- {PPA} 6673 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 7 | Jun 2024 – Dec 2024 | below 0.05 µg/l 13 Dec 2024 |
| 4-Chlorophenoxyacetic acid 3547 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 4-Nonylphenol Branched 9190 | River water | 7 | Jun 2024 – Dec 2024 | below 0.04 µg/l 13 Dec 2024 |
| 4-Phenoxybutyric acid :- {PBA} 6672 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| 4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Aldicarb 9344 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Aldicarb sulfoxide 8806 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 6 | Jul 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Jun 2024 – Dec 2024 | 88 mg/l 13 Dec 2024 |
| Aluminium, Dissolved 6037 | River water | 7 | Jun 2024 – Dec 2024 | below 20 µg/l 13 Dec 2024 |
| Aminomethylphosphonic acid 7125 | River water | 7 | Jun 2024 – Dec 2024 | below 0.1 µg/l 13 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 7 | Jun 2024 – Dec 2024 | 0.00211 mg/l 13 Dec 2024 |
| Asulam 3004 | River water | 6 | Jun 2024 – Dec 2024 | below 0.02 µg/l 13 Dec 2024 |
| Azoxystrobin 5050 | River water | 7 | Jun 2024 – Dec 2024 | below 0.02 µg/l 13 Dec 2024 |
| Barium, Dissolved 9446 | River water | 7 | Jun 2024 – Dec 2024 | 11 µg/l 13 Dec 2024 |
| Benazolin 3792 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Bentazone 4065 | River water | 7 | Jun 2024 – Dec 2024 | 0.042 µg/l 13 Dec 2024 |
| Benzo(a)Pyrene 6399 | River water | 7 | Jun 2024 – Dec 2024 | 0.0075 µg/l 13 Dec 2024 |
| Benzo(b)Fluoranthene 0731 | River water | 7 | Jun 2024 – Dec 2024 | 0.0069 µg/l 13 Dec 2024 |
| Benzo(g,h,i)Perylene 0714 | River water | 7 | Jun 2024 – Dec 2024 | 0.0099 µg/l 13 Dec 2024 |
| Benzo(k)Fluoranthene 0733 | River water | 7 | Jun 2024 – Dec 2024 | 0.0034 µg/l 13 Dec 2024 |
| Boron, Dissolved 9447 | River water | 7 | Jun 2024 – Dec 2024 | below 100 µg/l 13 Dec 2024 |
| Bromoxynil 6449 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Cadmium, Dissolved 0106 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Calcium, Dissolved 0239 | River water | 7 | Jun 2024 – Dec 2024 | 120 mg/l 13 Dec 2024 |
| Carbaryl 9343 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Carbendazim 3475 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Carbetamide 9073 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Carbofuran 3086 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 7 | Jun 2024 – Dec 2024 | 2.8 mg/l 13 Dec 2024 |
| Chloridazon 6760 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Chloride 0172 | River water | 7 | Jun 2024 – Dec 2024 | 19 mg/l 13 Dec 2024 |
| Chlorotoluron 9348 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Chloroxuron 3399 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Chromium, Dissolved 3409 | River water | 7 | Jun 2024 – Dec 2024 | below 0.5 µg/l 13 Dec 2024 |
| cis-Permethrin 9341 | River water | 5 | Jul 2024 – Dec 2024 | below 0.0001 µg/l 13 Dec 2024 |
| Clopyralid 6620 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Copper : BLM Bioavailable 4821 | River water | 7 | Jun 2024 – Dec 2024 | 0.12 µg/l 13 Dec 2024 |
| Copper, Dissolved 6450 | River water | 7 | Jun 2024 – Dec 2024 | 0.87 µg/l 13 Dec 2024 |
| Cypermethrin 0073 | River water | 5 | Jun 2024 – Dec 2024 | below 0.00001 µg/l 13 Dec 2024 |
| Cypermethrin Identification 5446 | River water | 5 | Jun 2024 – Dec 2024 | 1 text result 13 Dec 2024 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 7 | Jun 2024 – Dec 2024 | below 0.2 µg/l 13 Dec 2024 |
| Dicamba 3550 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Dichlorprop :- {2,4-DP} 3551 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Diflurobenzuron 9345 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Diuron 3811 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Ethiofencarb 6955 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Ethirimol 5047 | River water | 7 | Jun 2024 – Dec 2024 | below 0.05 µg/l 13 Dec 2024 |
| Fenoprop 3552 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Fenuron 9339 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Flow Type 2896 | River water | 7 | Jun 2024 – Dec 2024 | Moderate Flow 13 Dec 2024 |
| Fluoranthene 0736 | River water | 7 | Jun 2024 – Dec 2024 | 0.009 µg/l 13 Dec 2024 |
| Fluroxypyr 4064 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 7 | Jun 2024 – Dec 2024 | 1 text result 13 Dec 2024 |
| Glyphosate 3007 | River water | 7 | Jun 2024 – Dec 2024 | below 0.1 µg/l 13 Dec 2024 |
| Hardness, Calcium 0163 | River water | 7 | Jun 2024 – Dec 2024 | 300 mg/l 13 Dec 2024 |
| Hardness, Total as CaCO3 0158 | River water | 7 | Jun 2024 – Dec 2024 | 310 mg/l 13 Dec 2024 |
| Imazapyr 7025 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 6 | Jun 2024 – Dec 2024 | 0.0097 µg/l 13 Dec 2024 |
| Ioxynil 9068 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Iron, Dissolved 6460 | River water | 7 | Jun 2024 – Dec 2024 | below 30 µg/l 13 Dec 2024 |
| Isoproturon 3117 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Lead : BLM Bioavailable 3377 | River water | 7 | Jun 2024 – Dec 2024 | 0.02 µg/l 13 Dec 2024 |
| Lead, Dissolved 0052 | River water | 7 | Jun 2024 – Dec 2024 | below 0.1 µg/l 13 Dec 2024 |
| Linuron 3118 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Lithium, Dissolved 4201 | River water | 7 | Jun 2024 – Dec 2024 | below 100 µg/l 13 Dec 2024 |
| Magnesium, Dissolved 0235 | River water | 7 | Jun 2024 – Dec 2024 | 2.6 mg/l 13 Dec 2024 |
| Manganese : BLM Bioavailable 4820 | River water | 7 | Jun 2024 – Dec 2024 | 2.8 µg/l 13 Dec 2024 |
| Manganese, Dissolved 6458 | River water | 7 | Jun 2024 – Dec 2024 | below 10 µg/l 13 Dec 2024 |
| MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Mecoprop 3549 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Methabenzthiazuron 7053 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Methiocarb 6971 | River water | 7 | Jun 2024 – Dec 2024 | below 0.001 µg/l 13 Dec 2024 |
| Methomyl 6972 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Metoxuron 3130 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Metsulfuron-methyl 9861 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Monolinuron 3925 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Monuron 3400 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Neburon 9756 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 7 | Jun 2024 – Dec 2024 | 0.7 µg/l 13 Dec 2024 |
| Nickel, Dissolved 3410 | River water | 7 | Jun 2024 – Dec 2024 | 1.4 µg/l 13 Dec 2024 |
| Nitrite as N 0118 | River water | 7 | Jun 2024 – Dec 2024 | 0.045 mg/l 13 Dec 2024 |
| Nitrogen, Total as N 9686 | River water | 7 | Jun 2024 – Dec 2024 | 8.6 mg/l 13 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Jun 2024 – Dec 2024 | 7.8 mg/l 13 Dec 2024 |
| Oestrone :- {E1} 9889 | River water | 7 | Jun 2024 – Dec 2024 | 0.23 nanogram per litre 13 Dec 2024 |
| Oxamyl 6980 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Perfluorooctanoate anion 9274 | River water | 7 | Jun 2024 – Dec 2024 | below 0.0006 µg/l 13 Dec 2024 |
| Perfluorooctylsulphonate anion 9276 | River water | 7 | Jun 2024 – Dec 2024 | 0.00017 µg/l 13 Dec 2024 |
| Phenoxyacetic acid :- {PAA} 6671 | River water | 7 | Jun 2024 – Dec 2024 | 0.012 µg/l 13 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 7 | Jun 2024 – Dec 2024 | 0.25 mg/l 13 Dec 2024 |
| Picloram 9883 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Potassium, Dissolved 0209 | River water | 7 | Jun 2024 – Dec 2024 | 3.6 mg/l 13 Dec 2024 |
| Propoxur 6987 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 7 | Jun 2024 – Dec 2024 | 24 mg/l 13 Dec 2024 |
| Sodium, Dissolved 0205 | River water | 7 | Jun 2024 – Dec 2024 | 9.8 mg/l 13 Dec 2024 |
| Strontium, Filtered 6693 | River water | 7 | Jun 2024 – Dec 2024 | 360 µg/l 13 Dec 2024 |
| Sulcotrione 5042 | River water | 7 | Jun 2024 – Dec 2024 | below 0.1 µg/l 13 Dec 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 7 | Jun 2024 – Dec 2024 | 32 mg/l 13 Dec 2024 |
| trans-Permethrin 9342 | River water | 6 | Jun 2024 – Dec 2024 | below 0.0001 µg/l 13 Dec 2024 |
| Tributyl Tin as Cation 8944 | River water | 6 | Jun 2024 – Dec 2024 | below 0.0002 µg/l 13 Dec 2024 |
| Triclopyr 3555 | River water | 7 | Jun 2024 – Dec 2024 | below 0.005 µg/l 13 Dec 2024 |
| Triclosan 5889 | River water | 7 | Jun 2024 – Dec 2024 | below 0.01 µg/l 13 Dec 2024 |
| Triphenyl Tin as Cation 5732 | River water | 6 | Jun 2024 – Dec 2024 | below 0.0002 µg/l 13 Dec 2024 |
| Zinc : BLM Bioavailable 4822 | River water | 7 | Jun 2024 – Dec 2024 | 0.41 µg/l 13 Dec 2024 |
| Zinc, Dissolved 3408 | River water | 7 | Jun 2024 – Dec 2024 | 0.84 µg/l 13 Dec 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.