Congresbury Yeo downstream of Wemberham Lane
EA name: CONGRESBURY YEO D/S WEMBERHAM LANE (also listed as “RSN0563 CONGRESBURY YEO DOWNSTREAM WEMBERHAM LANE”)
Environment Agency sampling point SW-RSN0563 · 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 Aug 2026, 13:3149 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 20 since 16 Jan 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 340514, 165004As published, to the nearest 1 m. Open in a map
- River, by its own name
- Congresbury Yeo
- River, by the map
- Congresbury YeoPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Congresbury On the Congresbury Yeo · 4.2 km along the river
- Why it was sampled
- Monitoring (national agency policy) (20 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.9%
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 97.9 | 97.9% |
| 2 Jul 2026, 11:47 | 87.6 | 87.6% |
| 14 May 2026, 15:49 | 107.4 | 107.4% |
| 10 Apr 2026, 12:00 | 109.3 | 109.3% |
| 18 Mar 2026, 11:04 | 102.7 | 102.7% |
| 18 Feb 2026, 11:45 | 100 | 100% |
| 8 Jan 2026, 13:12 | 97 | 97% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.42 mg/l
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 8.42 | 8.42 mg/l |
| 2 Jul 2026, 11:47 | 7.88 | 7.88 mg/l |
| 14 May 2026, 15:49 | 11.4 | 11.4 mg/l |
| 10 Apr 2026, 12:00 | 11.7 | 11.7 mg/l |
| 18 Mar 2026, 11:04 | 11.3 | 11.3 mg/l |
| 18 Feb 2026, 11:45 | 12 | 12 mg/l |
| 8 Jan 2026, 13:12 | 11.7 | 11.7 mg/l |
Water temperature
code 0076 · °C
22.7 °C
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 22.7 | 22.7 °C |
| 2 Jul 2026, 11:47 | 20.4 | 20.4 °C |
| 14 May 2026, 15:49 | 12.4 | 12.4 °C |
| 10 Apr 2026, 12:00 | 12.2 | 12.2 °C |
| 18 Mar 2026, 11:04 | 11.1 | 11.1 °C |
| 18 Feb 2026, 11:45 | 7.3 | 7.3 °C |
| 8 Jan 2026, 13:12 | 7.3 | 7.3 °C |
pH
code 0061
8.02
Sampled 13 Aug 2026, 49 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 8.02 | 8.02 |
| 2 Jul 2026, 11:47 | 7.87 | 7.87 |
| 14 May 2026, 15:49 | 8.39 | 8.39 |
| 10 Apr 2026, 12:00 | 8.32 | 8.32 |
| 18 Mar 2026, 11:04 | 8.06 | 8.06 |
| 18 Feb 2026, 11:45 | 8.12 | 8.12 |
| 8 Jan 2026, 13:12 | 8.16 | 8.16 |
| 28 Apr 2025, 13:59 | 8.4 | 8.4 |
| 13 Mar 2025, 10:19 | 8.2 | 8.2 |
| 24 Feb 2025, 13:44 | 7.9 | 7.9 |
| 31 Jan 2025, 13:16 | 8.2 | 8.2 |
| 11 Dec 2024, 10:58 | 8.2 | 8.2 |
| 7 Oct 2024, 13:27 | 8.1 | 8.1 |
| 12 Jul 2024, 10:47 | 8.1 | 8.1 |
| 6 Jun 2024, 14:35 | 8.5 | 8.5 |
| 22 May 2024, 10:54 | 8.3 | 8.3 |
| 9 Apr 2024, 11:04 | 8.3 | 8.3 |
| 15 Mar 2024, 12:31 | 8.2 | 8.2 |
| 7 Feb 2024, 11:29 | 7.93 | 7.93 |
| 16 Jan 2024, 14:32 | 8.27 | 8.27 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.058 mg/l
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 0.058 | 0.058 mg/l |
| 2 Jul 2026, 11:47 | 0.049 | 0.049 mg/l |
| 14 May 2026, 15:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Apr 2026, 12:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2026, 11:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Feb 2026, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 13:12 | 0.073 | 0.073 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.67 mg/l
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 1.67 | 1.67 mg/l |
| 2 Jul 2026, 11:47 | 2.55 | 2.55 mg/l |
| 14 May 2026, 15:49 | 2.96 | 2.96 mg/l |
| 10 Apr 2026, 12:00 | 3.38 | 3.38 mg/l |
| 18 Mar 2026, 11:04 | 2.78 | 2.78 mg/l |
| 18 Feb 2026, 11:45 | 2.69 | 2.69 mg/l |
| 8 Jan 2026, 13:12 | 4.17 | 4.17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.24 mg/l
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 0.24 | 0.24 mg/l |
| 2 Jul 2026, 11:47 | 0.27 | 0.27 mg/l |
| 14 May 2026, 15:49 | 0.14 | 0.14 mg/l |
| 10 Apr 2026, 12:00 | 0.083 | 0.083 mg/l |
| 18 Mar 2026, 11:04 | 0.071 | 0.071 mg/l |
| 18 Feb 2026, 11:45 | 0.081 | 0.081 mg/l |
| 8 Jan 2026, 13:12 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
755 µS/cm
Sampled 13 Aug 2026, 49 days ago · 7 results banked
Every result (7)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Aug 2026, 13:31 | 755 | 755 µS/cm |
| 2 Jul 2026, 11:47 | 709 | 709 µS/cm |
| 14 May 2026, 15:49 | 712 | 712 µS/cm |
| 10 Apr 2026, 12:00 | 726 | 726 µS/cm |
| 18 Mar 2026, 11:04 | 641 | 641 µS/cm |
| 18 Feb 2026, 11:45 | 598 | 598 µS/cm |
| 8 Jan 2026, 13:12 | 752 | 752 µS/cm |
Everything measured here
119 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 119 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 7 | Jan 2026 – Aug 2026 | 97.9% 13 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 7 | Jan 2026 – Aug 2026 | 8.42 mg/l 13 Aug 2026 |
| Temperature of Water 0076 | River water | 7 | Jan 2026 – Aug 2026 | 22.7 °C 13 Aug 2026 |
| pH 0061 | River water | 20 | Jan 2024 – Aug 2026 | 8.02 13 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 7 | Jan 2026 – Aug 2026 | 0.058 mg/l 13 Aug 2026 |
| Nitrate as N 0117 | River water | 7 | Jan 2026 – Aug 2026 | 1.67 mg/l 13 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 7 | Jan 2026 – Aug 2026 | 0.24 mg/l 13 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 7 | Jan 2026 – Aug 2026 | 755 µS/cm 13 Aug 2026 |
| 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 | River water | 13 | Jan 2024 – Apr 2025 | below 0.02 µg/l 28 Apr 2025 |
| 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| 2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 | River water | 13 | Jan 2024 – Apr 2025 | 0.025 µg/l 28 Apr 2025 |
| 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| 2-Phenoxypropionic acid :- {PPA} 6673 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 13 | Jan 2024 – Apr 2025 | below 0.05 µg/l 28 Apr 2025 |
| 4-Chlorophenoxyacetic acid 3547 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| 4-Nonylphenol Branched 9190 | River water | 12 | Feb 2024 – Apr 2025 | below 0.04 µg/l 28 Apr 2025 |
| 4-Phenoxybutyric acid :- {PBA} 6672 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| 4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 | River water | 12 | Feb 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Aldicarb 9344 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Aldicarb sulfoxide 8806 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 11 | Feb 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 7 | Jan 2026 – Aug 2026 | 240 mg/l 13 Aug 2026 |
| Aluminium, Dissolved 6037 | River water | 13 | Jan 2024 – Apr 2025 | below 20 µg/l 28 Apr 2025 |
| Aminomethylphosphonic acid 7125 | River water | 10 | Apr 2024 – Apr 2025 | 13 µg/l 28 Apr 2025 |
| Ammonia un-ionised as N 0119 | River water | 7 | Jan 2026 – Aug 2026 | 0.00265 mg/l 13 Aug 2026 |
| Asulam 3004 | River water | 12 | Jan 2024 – Apr 2025 | below 0.02 µg/l 28 Apr 2025 |
| Azoxystrobin 5050 | River water | 12 | Jan 2024 – Apr 2025 | below 0.02 µg/l 28 Apr 2025 |
| Barium, Dissolved 9446 | River water | 13 | Jan 2024 – Apr 2025 | 210 µg/l 28 Apr 2025 |
| Benazolin 3792 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Bentazone 4065 | River water | 13 | Jan 2024 – Apr 2025 | below 0.003 µg/l 28 Apr 2025 |
| Benzo(a)Pyrene 6399 | River water | 13 | Jan 2024 – Apr 2025 | 0.0012 µg/l 28 Apr 2025 |
| Benzo(b)Fluoranthene 0731 | River water | 13 | Jan 2024 – Apr 2025 | 0.0014 µg/l 28 Apr 2025 |
| Benzo(g,h,i)Perylene 0714 | River water | 13 | Jan 2024 – Apr 2025 | 0.0021 µg/l 28 Apr 2025 |
| Benzo(k)Fluoranthene 0733 | River water | 13 | Jan 2024 – Apr 2025 | 0.00061 µg/l 28 Apr 2025 |
| Boron, Dissolved 9447 | River water | 13 | Jan 2024 – Apr 2025 | below 100 µg/l 28 Apr 2025 |
| Bromoxynil 6449 | River water | 12 | Feb 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Cadmium, Dissolved 0106 | River water | 13 | Jan 2024 – Apr 2025 | 0.046 µg/l 28 Apr 2025 |
| Calcium, Dissolved 0239 | River water | 13 | Jan 2024 – Apr 2025 | 91 mg/l 28 Apr 2025 |
| Carbaryl 9343 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Carbendazim 3475 | River water | 11 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Carbetamide 9073 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Carbofuran 3086 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 20 | Jan 2024 – Aug 2026 | 3.8 mg/l 13 Aug 2026 |
| Chloridazon 6760 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Chloride 0172 | River water | 7 | Jan 2026 – Aug 2026 | 55 mg/l 13 Aug 2026 |
| Chlorotoluron 9348 | River water | 11 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Chloroxuron 3399 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Chromium, Dissolved 3409 | River water | 13 | Jan 2024 – Apr 2025 | below 0.5 µg/l 28 Apr 2025 |
| cis-Permethrin 9341 | River water | 11 | Jan 2024 – Apr 2025 | below 0.0001 µg/l 28 Apr 2025 |
| Clopyralid 6620 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Copper : BLM Bioavailable 4821 | River water | 13 | Jan 2024 – Apr 2025 | 0.38 µg/l 28 Apr 2025 |
| Copper, Dissolved 6450 | River water | 13 | Jan 2024 – Apr 2025 | 1.2 µg/l 28 Apr 2025 |
| Cypermethrin 0073 | River water | 12 | Jan 2024 – Apr 2025 | below 0.00002 µg/l 28 Apr 2025 |
| Cypermethrin Identification 5446 | River water | 12 | Jan 2024 – Apr 2025 | 1 text result 28 Apr 2025 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 10 | Apr 2024 – Apr 2025 | below 0.2 µg/l 28 Apr 2025 |
| Dicamba 3550 | River water | 13 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Dichlorprop :- {2,4-DP} 3551 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Diflurobenzuron 9345 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Diuron 3811 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Ethiofencarb 6955 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Ethirimol 5047 | River water | 12 | Jan 2024 – Apr 2025 | below 0.05 µg/l 28 Apr 2025 |
| Fenoprop 3552 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Fenuron 9339 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Flow Type 2896 | River water | 6 | Jan 2026 – Aug 2026 | Moderate Flow 13 Aug 2026 |
| Fluoranthene 0736 | River water | 13 | Jan 2024 – Apr 2025 | 0.0035 µg/l 28 Apr 2025 |
| Fluroxypyr 4064 | River water | 13 | Jan 2024 – Apr 2025 | 0.012 µg/l 28 Apr 2025 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 13 | Jan 2024 – Apr 2025 | 1 text result 28 Apr 2025 |
| Glyphosate 3007 | River water | 10 | Apr 2024 – Apr 2025 | below 0.1 µg/l 28 Apr 2025 |
| Hardness, Calcium 0163 | River water | 13 | Jan 2024 – Apr 2025 | 227 mg/l 28 Apr 2025 |
| Hardness, Total as CaCO3 0158 | River water | 13 | Jan 2024 – Apr 2025 | 301 mg/l 28 Apr 2025 |
| Imazapyr 7025 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 13 | Jan 2024 – Apr 2025 | 0.0021 µg/l 28 Apr 2025 |
| Ioxynil 9068 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Iron, Dissolved 6460 | River water | 13 | Jan 2024 – Apr 2025 | below 30 µg/l 28 Apr 2025 |
| Isoproturon 3117 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Lead : BLM Bioavailable 3377 | River water | 13 | Jan 2024 – Apr 2025 | 0.18 µg/l 28 Apr 2025 |
| Lead, Dissolved 0052 | River water | 13 | Jan 2024 – Apr 2025 | 0.44 µg/l 28 Apr 2025 |
| Linuron 3118 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Lithium, Dissolved 4201 | River water | 13 | Jan 2024 – Apr 2025 | below 100 µg/l 28 Apr 2025 |
| Magnesium, Dissolved 0235 | River water | 13 | Jan 2024 – Apr 2025 | 18 mg/l 28 Apr 2025 |
| Manganese : BLM Bioavailable 4820 | River water | 13 | Jan 2024 – Apr 2025 | 11 µg/l 28 Apr 2025 |
| Manganese, Dissolved 6458 | River water | 13 | Jan 2024 – Apr 2025 | 11 µg/l 28 Apr 2025 |
| MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 | River water | 12 | Jan 2024 – Apr 2025 | 0.02 µg/l 28 Apr 2025 |
| MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Mecoprop 3549 | River water | 13 | Jan 2024 – Apr 2025 | 0.006 µg/l 28 Apr 2025 |
| Methabenzthiazuron 7053 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Methiocarb 6971 | River water | 12 | Jan 2024 – Apr 2025 | below 0.001 µg/l 28 Apr 2025 |
| Methomyl 6972 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Metoxuron 3130 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Metsulfuron-methyl 9861 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Monolinuron 3925 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Monuron 3400 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Neburon 9756 | River water | 12 | Jan 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 13 | Jan 2024 – Apr 2025 | 1.1 µg/l 28 Apr 2025 |
| Nickel, Dissolved 3410 | River water | 13 | Jan 2024 – Apr 2025 | 1.2 µg/l 28 Apr 2025 |
| Nitrite as N 0118 | River water | 7 | Jan 2026 – Aug 2026 | 0.027 mg/l 13 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 7 | Jan 2026 – Aug 2026 | 2.4 mg/l 13 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 7 | Jan 2026 – Aug 2026 | 1.7 mg/l 13 Aug 2026 |
| Oxamyl 6980 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Perfluorooctanoate anion 9274 | River water | 13 | Jan 2024 – Apr 2025 | below 0.0006 µg/l 28 Apr 2025 |
| Perfluorooctylsulphonate anion 9276 | River water | 12 | Jan 2024 – Apr 2025 | 0.00063 µg/l 28 Apr 2025 |
| Phenoxyacetic acid :- {PAA} 6671 | River water | 12 | Jan 2024 – Apr 2025 | 0.018 µg/l 28 Apr 2025 |
| Phosphorus, Total as P 0348 | River water | 7 | Jan 2026 – Aug 2026 | 0.27 mg/l 13 Aug 2026 |
| Picloram 9883 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Potassium, Dissolved 0209 | River water | 13 | Jan 2024 – Apr 2025 | 3.9 mg/l 28 Apr 2025 |
| Propoxur 6987 | River water | 12 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Silica, reactive as SiO2 0182 | River water | 7 | Jan 2026 – Aug 2026 | 5.8 mg/l 13 Aug 2026 |
| Sodium, Dissolved 0205 | River water | 13 | Jan 2024 – Apr 2025 | 28 mg/l 28 Apr 2025 |
| Solids, Suspended at 105 C 0135 | River water | 7 | Jan 2026 – Aug 2026 | 8.3 mg/l 13 Aug 2026 |
| Strontium, Filtered 6693 | River water | 13 | Jan 2024 – Apr 2025 | 850 µg/l 28 Apr 2025 |
| Sulcotrione 5042 | River water | 11 | Jan 2024 – Apr 2025 | below 0.1 µg/l 28 Apr 2025 |
| Sulphate, Dissolved as SO4 7859 | River water | 13 | Jan 2024 – Apr 2025 | 58 mg/l 28 Apr 2025 |
| trans-Permethrin 9342 | River water | 11 | Mar 2024 – Apr 2025 | below 0.0001 µg/l 28 Apr 2025 |
| Tributyl Tin as Cation 8944 | River water | 11 | Jan 2024 – Apr 2025 | below 0.0002 µg/l 28 Apr 2025 |
| Triclopyr 3555 | River water | 13 | Jan 2024 – Apr 2025 | below 0.005 µg/l 28 Apr 2025 |
| Triclosan 5889 | River water | 10 | Apr 2024 – Apr 2025 | below 0.01 µg/l 28 Apr 2025 |
| Triphenyl Tin as Cation 5732 | River water | 11 | Jan 2024 – Apr 2025 | below 0.0002 µg/l 28 Apr 2025 |
| Zinc : BLM Bioavailable 4822 | River water | 13 | Jan 2024 – Apr 2025 | 3.5 µg/l 28 Apr 2025 |
| Zinc, Dissolved 3408 | River water | 13 | Jan 2024 – Apr 2025 | 6.6 µg/l 28 Apr 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.