River Irt downstream of Holmrook
EA name: RIVER IRT D/S HOLMROOK (also listed as “RSN0331 RIVER IRT D/S HOLMROOK”)
Environment Agency sampling point NW-RSN0331 · 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 Dec 2025, 12:449 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
- 20 since 25 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 308095, 499109As published, to the nearest 1 m. Open in a map
- River, by its own name
- Irt
- River, by the map
- River IrtPlaced on the river its name gives, 8 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Galesyke On the River Irt · 15 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 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 97.9 | 97.9% |
| 6 Nov 2025, 12:43 | 99.5 | 99.5% |
| 17 Oct 2025, 10:43 | 98.4 | 98.4% |
| 23 Sep 2025, 10:57 | 100.2 | 100.2% |
| 26 Aug 2025, 12:58 | 107.2 | 107.2% |
| 29 Jul 2025, 10:12 | 101.4 | 101.4% |
| 24 Jun 2025, 13:12 | 103.2 | 103.2% |
| 14 May 2025, 14:47 | 115.5 | 115.5% |
| 9 Dec 2024, 09:40 | 100.2 | 100.2% |
| 11 Nov 2024, 12:48 | 101.1 | 101.1% |
| 8 Oct 2024, 14:05 | 97.3 | 97.3% |
| 12 Sep 2024, 13:11 | 101.9 | 101.9% |
| 27 Aug 2024, 11:55 | 99.2 | 99.2% |
| 9 Jul 2024, 12:14 | 99.6 | 99.6% |
| 18 Jun 2024, 10:35 | 102.3 | 102.3% |
| 1 May 2024, 11:12 | 104 | 104% |
| 10 Apr 2024, 12:37 | 103.3 | 103.3% |
| 19 Mar 2024, 11:44 | 100.2 | 100.2% |
| 20 Feb 2024, 13:02 | 99.7 | 99.7% |
| 25 Jan 2024, 14:05 | 98.3 | 98.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.6 mg/l
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 11.6 | 11.6 mg/l |
| 6 Nov 2025, 12:43 | 10.7 | 10.7 mg/l |
| 17 Oct 2025, 10:43 | 10.8 | 10.8 mg/l |
| 23 Sep 2025, 10:57 | 10.7 | 10.7 mg/l |
| 26 Aug 2025, 12:58 | 10.2 | 10.2 mg/l |
| 29 Jul 2025, 10:12 | 10 | 10 mg/l |
| 24 Jun 2025, 13:12 | 10.4 | 10.4 mg/l |
| 14 May 2025, 14:47 | 11.2 | 11.2 mg/l |
| 9 Dec 2024, 09:40 | 11.9 | 11.9 mg/l |
| 11 Nov 2024, 12:48 | 11.6 | 11.6 mg/l |
| 8 Oct 2024, 14:05 | 10.1 | 10.1 mg/l |
| 12 Sep 2024, 13:11 | 10.9 | 10.9 mg/l |
| 27 Aug 2024, 11:55 | 10 | 10 mg/l |
| 9 Jul 2024, 12:14 | 10.2 | 10.2 mg/l |
| 18 Jun 2024, 10:35 | 10.8 | 10.8 mg/l |
| 1 May 2024, 11:12 | 11.7 | 11.7 mg/l |
| 10 Apr 2024, 12:37 | 12.3 | 12.3 mg/l |
| 19 Mar 2024, 11:44 | 11.7 | 11.7 mg/l |
| 20 Feb 2024, 13:02 | 11.9 | 11.9 mg/l |
| 25 Jan 2024, 14:05 | 11.9 | 11.9 mg/l |
Water temperature
code 0076 · °C
7.8 °C
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 7.8 | 7.8 °C |
| 6 Nov 2025, 12:43 | 11.9 | 11.9 °C |
| 17 Oct 2025, 10:43 | 11.2 | 11.2 °C |
| 23 Sep 2025, 10:57 | 12.5 | 12.5 °C |
| 26 Aug 2025, 12:58 | 17.6 | 17.6 °C |
| 29 Jul 2025, 10:12 | 15.9 | 15.9 °C |
| 24 Jun 2025, 13:12 | 15.1 | 15.1 °C |
| 14 May 2025, 14:47 | 16.8 | 16.8 °C |
| 9 Dec 2024, 09:40 | 7.8 | 7.8 °C |
| 11 Nov 2024, 12:48 | 9.2 | 9.2 °C |
| 8 Oct 2024, 14:05 | 13.5 | 13.5 °C |
| 12 Sep 2024, 13:11 | 12.1 | 12.1 °C |
| 27 Aug 2024, 11:55 | 14.7 | 14.7 °C |
| 9 Jul 2024, 12:14 | 14.1 | 14.1 °C |
| 18 Jun 2024, 10:35 | 12.8 | 12.8 °C |
| 1 May 2024, 11:12 | 10.2 | 10.2 °C |
| 10 Apr 2024, 12:37 | 7.8 | 7.8 °C |
| 19 Mar 2024, 11:44 | 8.5 | 8.5 °C |
| 20 Feb 2024, 13:02 | 7.7 | 7.7 °C |
| 25 Jan 2024, 14:05 | 7.2 | 7.2 °C |
pH
code 0061
6.94
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 6.94 | 6.94 |
| 6 Nov 2025, 12:43 | 6.73 | 6.73 |
| 17 Oct 2025, 10:43 | 7.77 | 7.77 |
| 23 Sep 2025, 10:57 | 7.52 | 7.52 |
| 26 Aug 2025, 12:58 | 8 | 8 |
| 29 Jul 2025, 10:12 | 7.56 | 7.56 |
| 24 Jun 2025, 13:12 | 8.75 | 8.75 |
| 14 May 2025, 14:47 | 8.05 | 8.05 |
| 9 Dec 2024, 09:40 | 7.2 | 7.2 |
| 11 Nov 2024, 12:48 | 7.8 | 7.8 |
| 8 Oct 2024, 14:05 | 7.5 | 7.5 |
| 12 Sep 2024, 13:11 | 7.4 | 7.4 |
| 27 Aug 2024, 11:55 | 7.1 | 7.1 |
| 9 Jul 2024, 12:14 | 7.5 | 7.5 |
| 18 Jun 2024, 10:35 | 7.5 | 7.5 |
| 1 May 2024, 11:12 | 7.5 | 7.5 |
| 10 Apr 2024, 12:37 | 7.1 | 7.1 |
| 19 Mar 2024, 11:44 | 7 | 7 |
| 20 Feb 2024, 13:02 | 6.82 | 6.82 |
| 25 Jan 2024, 14:05 | 7.21 | 7.21 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0066 mg/l
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 0.0066 | 0.0066 mg/l |
| 6 Nov 2025, 12:43 | 0.0056 | 0.0056 mg/l |
| 17 Oct 2025, 10:43 | 0.0033 | 0.0033 mg/l |
| 23 Sep 2025, 10:57 | 0.0054 | 0.0054 mg/l |
| 26 Aug 2025, 12:58 | 0.019 | 0.019 mg/l |
| 29 Jul 2025, 10:12 | <0.002 | below 0.002 mg/l (not detected above this) |
| 24 Jun 2025, 13:12 | 0.028 | 0.028 mg/l |
| 14 May 2025, 14:47 | 0.0091 | 0.0091 mg/l |
| 9 Dec 2024, 09:40 | 0.011 | 0.011 mg/l |
| 11 Nov 2024, 12:48 | 0.0053 | 0.0053 mg/l |
| 8 Oct 2024, 14:05 | <0.002 | below 0.002 mg/l (not detected above this) |
| 12 Sep 2024, 13:11 | 0.0052 | 0.0052 mg/l |
| 27 Aug 2024, 11:55 | 0.011 | 0.011 mg/l |
| 9 Jul 2024, 12:14 | 0.01 | 0.01 mg/l |
| 18 Jun 2024, 10:35 | 0.0043 | 0.0043 mg/l |
| 1 May 2024, 11:12 | 0.0075 | 0.0075 mg/l |
| 10 Apr 2024, 12:37 | <0.002 | below 0.002 mg/l (not detected above this) |
| 19 Mar 2024, 11:44 | 0.0075 | 0.0075 mg/l |
| 20 Feb 2024, 13:02 | 0.0046 | 0.0046 mg/l |
| 25 Jan 2024, 14:05 | 0.008 | 0.008 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.369 mg/l
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 0.369 | 0.369 mg/l |
| 6 Nov 2025, 12:43 | 0.359 | 0.359 mg/l |
| 17 Oct 2025, 10:43 | 0.527 | 0.527 mg/l |
| 23 Sep 2025, 10:57 | 0.359 | 0.359 mg/l |
| 26 Aug 2025, 12:58 | 0.687 | 0.687 mg/l |
| 29 Jul 2025, 10:12 | 0.498 | 0.498 mg/l |
| 24 Jun 2025, 13:12 | 0.507 | 0.507 mg/l |
| 14 May 2025, 14:47 | 0.925 | 0.925 mg/l |
| 9 Dec 2024, 09:40 | 0.418 | 0.418 mg/l |
| 11 Nov 2024, 12:48 | 0.538 | 0.538 mg/l |
| 8 Oct 2024, 14:05 | 0.637 | 0.637 mg/l |
| 12 Sep 2024, 13:11 | 0.507 | 0.507 mg/l |
| 27 Aug 2024, 11:55 | 0.249 | 0.249 mg/l |
| 9 Jul 2024, 12:14 | 0.53 | 0.53 mg/l |
| 18 Jun 2024, 10:35 | 0.387 | 0.387 mg/l |
| 1 May 2024, 11:12 | 0.607 | 0.607 mg/l |
| 10 Apr 2024, 12:37 | 0.489 | 0.489 mg/l |
| 19 Mar 2024, 11:44 | 0.399 | 0.399 mg/l |
| 20 Feb 2024, 13:02 | 0.529 | 0.529 mg/l |
| 25 Jan 2024, 14:05 | 0.549 | 0.549 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.0022 mg/l
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 0.0022 | 0.0022 mg/l |
| 6 Nov 2025, 12:43 | 0.002 | 0.002 mg/l |
| 17 Oct 2025, 10:43 | 0.0036 | 0.0036 mg/l |
| 23 Sep 2025, 10:57 | 0.0017 | 0.0017 mg/l |
| 26 Aug 2025, 12:58 | 0.0035 | 0.0035 mg/l |
| 29 Jul 2025, 10:12 | 0.0049 | 0.0049 mg/l |
| 24 Jun 2025, 13:12 | 0.0087 | 0.0087 mg/l |
| 14 May 2025, 14:47 | 0.0077 | 0.0077 mg/l |
| 9 Dec 2024, 09:40 | 0.0034 | 0.0034 mg/l |
| 11 Nov 2024, 12:48 | 0.0081 | 0.0081 mg/l |
| 8 Oct 2024, 14:05 | 0.006 | 0.006 mg/l |
| 12 Sep 2024, 13:11 | 0.0052 | 0.0052 mg/l |
| 27 Aug 2024, 11:55 | 0.0091 | 0.0091 mg/l |
| 9 Jul 2024, 12:14 | 0.0043 | 0.0043 mg/l |
| 18 Jun 2024, 10:35 | 0.0019 | 0.0019 mg/l |
| 1 May 2024, 11:12 | 0.0044 | 0.0044 mg/l |
| 10 Apr 2024, 12:37 | 0.0042 | 0.0042 mg/l |
| 19 Mar 2024, 11:44 | 0.0012 | 0.0012 mg/l |
| 20 Feb 2024, 13:02 | 0.0023 | 0.0023 mg/l |
| 25 Jan 2024, 14:05 | 0.0034 | 0.0034 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
45 µS/cm
Sampled 16 Dec 2025, 9 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 12:44 | 45 | 45 µS/cm |
| 6 Nov 2025, 12:43 | 50 | 50 µS/cm |
| 17 Oct 2025, 10:43 | 81 | 81 µS/cm |
| 23 Sep 2025, 10:57 | 71 | 71 µS/cm |
| 26 Aug 2025, 12:58 | 112 | 112 µS/cm |
| 29 Jul 2025, 10:12 | 124 | 124 µS/cm |
| 24 Jun 2025, 13:12 | 125 | 125 µS/cm |
| 14 May 2025, 14:47 | 135 | 135 µS/cm |
| 9 Dec 2024, 09:40 | 50 | 50 µS/cm |
| 11 Nov 2024, 12:48 | 79 | 79 µS/cm |
| 8 Oct 2024, 14:05 | 99 | 99 µS/cm |
| 12 Sep 2024, 13:11 | 75 | 75 µS/cm |
| 27 Aug 2024, 11:55 | 51 | 51 µS/cm |
| 9 Jul 2024, 12:14 | 76 | 76 µS/cm |
| 18 Jun 2024, 10:35 | 62 | 62 µS/cm |
| 1 May 2024, 11:12 | 80 | 80 µS/cm |
| 10 Apr 2024, 12:37 | 57 | 57 µS/cm |
| 19 Mar 2024, 11:44 | 50 | 50 µS/cm |
| 20 Feb 2024, 13:02 | 59 | 59 µS/cm |
| 25 Jan 2024, 14:05 | 58 | 58 µS/cm |
Everything measured here
118 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 118 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 20 | Jan 2024 – Dec 2025 | 97.9% 16 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Jan 2024 – Dec 2025 | 11.6 mg/l 16 Dec 2025 |
| Temperature of Water 0076 | River water | 20 | Jan 2024 – Dec 2025 | 7.8 °C 16 Dec 2025 |
| pH 0061 | River water | 20 | Jan 2024 – Dec 2025 | 6.94 16 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Jan 2024 – Dec 2025 | 0.0066 mg/l 16 Dec 2025 |
| Nitrate as N 0117 | River water | 20 | Jan 2024 – Dec 2025 | 0.369 mg/l 16 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Jan 2024 – Dec 2025 | 0.0022 mg/l 16 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 20 | Jan 2024 – Dec 2025 | 45 µS/cm 16 Dec 2025 |
| 2,3,6-TBA :- {2,3,6-Trichlorobenzoic acid} 7726 | River water | 12 | Jan 2024 – Dec 2024 | below 0.02 µg/l 9 Dec 2024 |
| 2,4,5-T :- {2,4,5-Trichlorophenoxyacetic acid} 3546 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 2,4-D :- {2,4-Dichlorophenoxyacetic acid} 3545 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 2,4-DB :- {4-(2,4-dichlorophenoxy)butyric acid} 3791 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 2-Phenoxypropionic acid :- {PPA} 6673 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 4-Chloro-2-methylphenol :- {p-Chloro-o-cresol} 3341 | River water | 12 | Jan 2024 – Dec 2024 | below 0.05 µg/l 9 Dec 2024 |
| 4-Chlorophenoxyacetic acid 3547 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 4-Nonylphenol Branched 9190 | River water | 11 | Feb 2024 – Dec 2024 | below 0.04 µg/l 9 Dec 2024 |
| 4-Phenoxybutyric acid :- {PBA} 6672 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| 4-tert-Octylphenol :- {p-tert-Octylphenol} 9267 | River water | 11 | Feb 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Aldicarb 9344 | River water | 11 | Jan 2024 – Nov 2024 | below 0.005 µg/l 11 Nov 2024 |
| Aldicarb sulfoxide 8806 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Aldoxycarb :- {Aldicarb Sulfone} 8807 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Jan 2024 – Dec 2025 | below 8 mg/l 16 Dec 2025 |
| Aluminium, Dissolved 6037 | River water | 12 | Jan 2024 – Dec 2024 | 26 µg/l 9 Dec 2024 |
| Aminomethylphosphonic acid 7125 | River water | 9 | Apr 2024 – Dec 2024 | below 0.1 µg/l 9 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 20 | Jan 2024 – Dec 2025 | below 0.00001 mg/l 16 Dec 2025 |
| Asulam 3004 | River water | 12 | Jan 2024 – Dec 2024 | below 0.02 µg/l 9 Dec 2024 |
| Azoxystrobin 5050 | River water | 12 | Jan 2024 – Dec 2024 | below 0.02 µg/l 9 Dec 2024 |
| Barium, Dissolved 9446 | River water | 12 | Jan 2024 – Dec 2024 | below 10 µg/l 9 Dec 2024 |
| Benazolin 3792 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Bentazone 4065 | River water | 12 | Jan 2024 – Dec 2024 | below 0.003 µg/l 9 Dec 2024 |
| Benzo(a)Pyrene 6399 | River water | 11 | Jan 2024 – Nov 2024 | 0.00056 µg/l 11 Nov 2024 |
| Benzo(b)Fluoranthene 0731 | River water | 11 | Jan 2024 – Nov 2024 | 0.00055 µg/l 11 Nov 2024 |
| Benzo(g,h,i)Perylene 0714 | River water | 12 | Jan 2024 – Dec 2024 | 0.0074 µg/l 9 Dec 2024 |
| Benzo(k)Fluoranthene 0733 | River water | 10 | Jan 2024 – Nov 2024 | 0.0003 µg/l 11 Nov 2024 |
| Boron, Dissolved 9447 | River water | 12 | Jan 2024 – Dec 2024 | below 100 µg/l 9 Dec 2024 |
| Bromoxynil 6449 | River water | 11 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Cadmium, Dissolved 0106 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Calcium, Dissolved 0239 | River water | 12 | Jan 2024 – Dec 2024 | 3.7 mg/l 9 Dec 2024 |
| Carbaryl 9343 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Carbendazim 3475 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Carbetamide 9073 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Carbofuran 3086 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 20 | Jan 2024 – Dec 2025 | 1.2 mg/l 16 Dec 2025 |
| Chloridazon 6760 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Chloride 0172 | River water | 20 | Jan 2024 – Dec 2025 | 6.9 mg/l 16 Dec 2025 |
| Chlorotoluron 9348 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Chloroxuron 3399 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Chromium, Dissolved 3409 | River water | 12 | Jan 2024 – Dec 2024 | below 0.5 µg/l 9 Dec 2024 |
| cis-Permethrin 9341 | River water | 11 | Jan 2024 – Dec 2024 | below 0.0001 µg/l 9 Dec 2024 |
| Clopyralid 6620 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Copper : BLM Bioavailable 4821 | River water | 12 | Jan 2024 – Dec 2024 | 0.19 µg/l 9 Dec 2024 |
| Copper, Dissolved 6450 | River water | 12 | Jan 2024 – Dec 2024 | 1.1 µg/l 9 Dec 2024 |
| Cypermethrin 0073 | River water | 10 | Jan 2024 – Dec 2024 | 0.00002 µg/l 9 Dec 2024 |
| Cypermethrin Identification 5446 | River water | 10 | Jan 2024 – Dec 2024 | 1 text result 9 Dec 2024 |
| Di(2-ethylhexyl) phthalate :- {DEHP} 6724 | River water | 9 | Apr 2024 – Dec 2024 | below 0.2 µg/l 9 Dec 2024 |
| Dicamba 3550 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Dichlorprop :- {2,4-DP} 3551 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Diflurobenzuron 9345 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Diuron 3811 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Ethiofencarb 6955 | River water | 11 | Jan 2024 – Nov 2024 | below 0.005 µg/l 11 Nov 2024 |
| Ethirimol 5047 | River water | 12 | Jan 2024 – Dec 2024 | below 0.05 µg/l 9 Dec 2024 |
| Fenoprop 3552 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Fenuron 9339 | River water | 11 | Jan 2024 – Nov 2024 | below 0.01 µg/l 11 Nov 2024 |
| Flow Type 2896 | River water | 9 | Sep 2024 – Dec 2025 | High Flow 16 Dec 2025 |
| Fluoranthene 0736 | River water | 11 | Jan 2024 – Dec 2024 | 0.007 µg/l 9 Dec 2024 |
| Fluroxypyr 4064 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 12 | Jan 2024 – Dec 2024 | 1 text result 9 Dec 2024 |
| Glyphosate 3007 | River water | 9 | Apr 2024 – Dec 2024 | below 0.1 µg/l 9 Dec 2024 |
| Hardness, Calcium 0163 | River water | 12 | Jan 2024 – Dec 2024 | 9.24 mg/l 9 Dec 2024 |
| Hardness, Total as CaCO3 0158 | River water | 12 | Jan 2024 – Dec 2024 | 13.1 mg/l 9 Dec 2024 |
| Imazapyr 7025 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Indeno(1,2,3-cd)pyrene 0746 | River water | 12 | Jan 2024 – Dec 2024 | 0.0069 µg/l 9 Dec 2024 |
| Ioxynil 9068 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Iron, Dissolved 6460 | River water | 12 | Jan 2024 – Dec 2024 | 48 µg/l 9 Dec 2024 |
| Isoproturon 3117 | River water | 11 | Jan 2024 – Nov 2024 | below 0.01 µg/l 11 Nov 2024 |
| Lead : BLM Bioavailable 3377 | River water | 12 | Jan 2024 – Dec 2024 | 0.04 µg/l 9 Dec 2024 |
| Lead, Dissolved 0052 | River water | 12 | Jan 2024 – Dec 2024 | below 0.1 µg/l 9 Dec 2024 |
| Linuron 3118 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Lithium, Dissolved 4201 | River water | 12 | Jan 2024 – Dec 2024 | below 100 µg/l 9 Dec 2024 |
| Magnesium, Dissolved 0235 | River water | 12 | Jan 2024 – Dec 2024 | 0.94 mg/l 9 Dec 2024 |
| Manganese : BLM Bioavailable 4820 | River water | 12 | Jan 2024 – Dec 2024 | 2.2 µg/l 9 Dec 2024 |
| Manganese, Dissolved 6458 | River water | 12 | Jan 2024 – Dec 2024 | below 10 µg/l 9 Dec 2024 |
| MCPA :- {4-Chloro-2-methylphenoxyacetic acid} 3548 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| MCPB :- {4-Chloro-2-methylphenoxybutyric acid} 3790 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Mecoprop 3549 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Methabenzthiazuron 7053 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Methiocarb 6971 | River water | 12 | Jan 2024 – Dec 2024 | below 0.001 µg/l 9 Dec 2024 |
| Methomyl 6972 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Metoxuron 3130 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Metsulfuron-methyl 9861 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Monolinuron 3925 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Monuron 3400 | River water | 11 | Jan 2024 – Nov 2024 | below 0.01 µg/l 11 Nov 2024 |
| Neburon 9756 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 12 | Jan 2024 – Dec 2024 | 0.15 µg/l 9 Dec 2024 |
| Nickel, Dissolved 3410 | River water | 12 | Jan 2024 – Dec 2024 | below 0.5 µg/l 9 Dec 2024 |
| Nitrite as N 0118 | River water | 20 | Jan 2024 – Dec 2025 | below 0.001 mg/l 16 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Jan 2024 – Dec 2025 | 0.37 mg/l 16 Dec 2025 |
| Oxamyl 6980 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Perfluorooctanoate anion 9274 | River water | 12 | Jan 2024 – Dec 2024 | 0.00062 µg/l 9 Dec 2024 |
| Perfluorooctylsulphonate anion 9276 | River water | 12 | Jan 2024 – Dec 2024 | 0.00012 µg/l 9 Dec 2024 |
| Phenoxyacetic acid :- {PAA} 6671 | River water | 12 | Jan 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 20 | Jan 2024 – Dec 2025 | 0.011 mg/l 16 Dec 2025 |
| Picloram 9883 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Potassium, Dissolved 0209 | River water | 12 | Jan 2024 – Dec 2024 | 0.54 mg/l 9 Dec 2024 |
| Propoxur 6987 | River water | 11 | Jan 2024 – Nov 2024 | below 0.005 µg/l 11 Nov 2024 |
| Silica, reactive as SiO2 0182 | River water | 20 | Jan 2024 – Dec 2025 | 2.8 mg/l 16 Dec 2025 |
| Sodium, Dissolved 0205 | River water | 12 | Jan 2024 – Dec 2024 | 4.6 mg/l 9 Dec 2024 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Dec 2025 – Dec 2025 | 12 mg/l 16 Dec 2025 |
| Strontium, Filtered 6693 | River water | 12 | Jan 2024 – Dec 2024 | below 20 µg/l 9 Dec 2024 |
| Sulcotrione 5042 | River water | 12 | Jan 2024 – Dec 2024 | below 0.1 µg/l 9 Dec 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 12 | Jan 2024 – Dec 2024 | below 10 mg/l 9 Dec 2024 |
| trans-Permethrin 9342 | River water | 10 | Jan 2024 – Dec 2024 | below 0.0001 µg/l 9 Dec 2024 |
| Tributyl Tin as Cation 8944 | River water | 11 | Jan 2024 – Dec 2024 | below 0.0002 µg/l 9 Dec 2024 |
| Triclopyr 3555 | River water | 12 | Jan 2024 – Dec 2024 | below 0.005 µg/l 9 Dec 2024 |
| Triclosan 5889 | River water | 9 | Apr 2024 – Dec 2024 | below 0.01 µg/l 9 Dec 2024 |
| Triphenyl Tin as Cation 5732 | River water | 11 | Jan 2024 – Dec 2024 | below 0.0002 µg/l 9 Dec 2024 |
| Zinc : BLM Bioavailable 4822 | River water | 12 | Jan 2024 – Dec 2024 | 4.8 µg/l 9 Dec 2024 |
| Zinc, Dissolved 3408 | River water | 12 | Jan 2024 – Dec 2024 | 4.8 µg/l 9 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.