Rodden upstream of Langton Herring sewage treatment works
EA name: RODDEN U/S LANGTON HERRING STW (also listed as “RODDEN STREAM U/S LANGTON HERRING STW”)
Environment Agency sampling point SW-C0853500 · 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
- 4 Sep 2026, 13:3027 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 13 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 360643, 82793As published, to the nearest 1 m. Open in a map
- River, by its own name
- Rodden
- River, by the map
- An unnamed streamPlaced by position alone (the only river line close by), 10 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Planned investigation (local monitoring) (19 samples)
Monitoring (national agency policy) (8 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
84.6%
Sampled 4 Sep 2026, 27 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 84.6 | 84.6% |
| 10 Aug 2026, 11:03 | 84.6 | 84.6% |
| 22 Jul 2026, 10:45 | 88.5 | 88.5% |
| 29 Jun 2026, 11:40 | 83.4 | 83.4% |
| 6 May 2026, 13:03 | 93 | 93% |
| 16 Apr 2026, 13:58 | 98.9 | 98.9% |
| 24 Mar 2026, 11:58 | 94 | 94% |
| 5 Feb 2026, 11:43 | 93 | 93% |
| 15 Jan 2026, 10:39 | 96.2 | 96.2% |
| 16 Dec 2025, 11:20 | 89.1 | 89.1% |
| 4 Nov 2025, 12:05 | 81.1 | 81.1% |
| 2 Oct 2025, 12:44 | 84.9 | 84.9% |
| 11 Sep 2025, 13:05 | 83.4 | 83.4% |
| 21 Aug 2025, 11:20 | 82.4 | 82.4% |
| 12 Aug 2025, 11:33 | 85.3 | 85.3% |
| 23 Jul 2025, 11:44 | 83.7 | 83.7% |
| 24 Jun 2025, 10:31 | 89.7 | 89.7% |
| 30 May 2025, 09:48 | 81.2 | 81.2% |
| 3 Apr 2025, 10:56 | 100.5 | 100.5% |
| 5 Mar 2025, 13:13 | 99.2 | 99.2% |
| 6 Feb 2025, 13:03 | 95.3 | 95.3% |
| 6 Dec 2024, 11:43 | 93.7 | 93.7% |
| 11 Nov 2024, 10:48 | 90.6 | 90.6% |
| 6 Sep 2024, 12:17 | 92.5 | 92.5% |
| 7 Aug 2024, 12:19 | 80.1 | 80.1% |
| 5 Jul 2024, 13:02 | 87 | 87% |
| 13 Jun 2024, 11:43 | 96.5 | 96.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.84 mg/l
Sampled 4 Sep 2026, 27 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 7.84 | 7.84 mg/l |
| 10 Aug 2026, 11:03 | 8.17 | 8.17 mg/l |
| 22 Jul 2026, 10:45 | 8.68 | 8.68 mg/l |
| 29 Jun 2026, 11:40 | 8.18 | 8.18 mg/l |
| 6 May 2026, 13:03 | 9.91 | 9.91 mg/l |
| 16 Apr 2026, 13:58 | 10.4 | 10.4 mg/l |
| 24 Mar 2026, 11:58 | 10.5 | 10.5 mg/l |
| 5 Feb 2026, 11:43 | 10.7 | 10.7 mg/l |
| 15 Jan 2026, 10:39 | 11.3 | 11.3 mg/l |
| 16 Dec 2025, 11:20 | 10.1 | 10.1 mg/l |
| 4 Nov 2025, 12:05 | 8.37 | 8.37 mg/l |
| 2 Oct 2025, 12:44 | 8.9 | 8.9 mg/l |
| 11 Sep 2025, 13:05 | 8.33 | 8.33 mg/l |
| 12 Aug 2025, 11:33 | 7.96 | 7.96 mg/l |
| 23 Jul 2025, 11:44 | 8.22 | 8.22 mg/l |
| 24 Jun 2025, 10:31 | 8.93 | 8.93 mg/l |
| 30 May 2025, 09:48 | 8.22 | 8.22 mg/l |
| 3 Apr 2025, 10:56 | 11.3 | 11.3 mg/l |
| 5 Mar 2025, 13:13 | 11.8 | 11.8 mg/l |
| 6 Feb 2025, 13:03 | 11.3 | 11.3 mg/l |
| 6 Dec 2024, 11:43 | 10.5 | 10.5 mg/l |
| 11 Nov 2024, 10:48 | 9.83 | 9.83 mg/l |
| 6 Sep 2024, 12:17 | 9.09 | 9.09 mg/l |
| 7 Aug 2024, 12:19 | 7.8 | 7.8 mg/l |
| 5 Jul 2024, 13:02 | 8.4 | 8.4 mg/l |
| 13 Jun 2024, 11:43 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
18.9 °C
Sampled 4 Sep 2026, 27 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 18.9 | 18.9 °C |
| 10 Aug 2026, 11:03 | 16.9 | 16.9 °C |
| 22 Jul 2026, 10:45 | 16.2 | 16.2 °C |
| 29 Jun 2026, 11:40 | 16.2 | 16.2 °C |
| 6 May 2026, 13:03 | 12.4 | 12.4 °C |
| 16 Apr 2026, 13:58 | 13.1 | 13.1 °C |
| 24 Mar 2026, 11:58 | 10.3 | 10.3 °C |
| 5 Feb 2026, 11:43 | 9.2 | 9.2 °C |
| 15 Jan 2026, 10:39 | 8.3 | 8.3 °C |
| 16 Dec 2025, 11:20 | 9.8 | 9.8 °C |
| 4 Nov 2025, 12:05 | 13.8 | 13.8 °C |
| 2 Oct 2025, 12:44 | 13.1 | 13.1 °C |
| 11 Sep 2025, 13:05 | 15.3 | 15.3 °C |
| 21 Aug 2025, 11:20 | 14.8 | 14.8 °C |
| 12 Aug 2025, 11:33 | 18.6 | 18.6 °C |
| 23 Jul 2025, 11:44 | 16.1 | 16.1 °C |
| 24 Jun 2025, 10:31 | 15.5 | 15.5 °C |
| 30 May 2025, 09:48 | 14.7 | 14.7 °C |
| 3 Apr 2025, 10:56 | 10 | 10 °C |
| 5 Mar 2025, 13:13 | 7.7 | 7.7 °C |
| 6 Feb 2025, 13:03 | 7.8 | 7.8 °C |
| 6 Dec 2024, 11:43 | 10.2 | 10.2 °C |
| 11 Nov 2024, 10:48 | 11.6 | 11.6 °C |
| 6 Sep 2024, 12:17 | 16.1 | 16.1 °C |
| 7 Aug 2024, 12:19 | 16.5 | 16.5 °C |
| 5 Jul 2024, 13:02 | 16.9 | 16.9 °C |
| 13 Jun 2024, 11:43 | 12.5 | 12.5 °C |
pH
code 0061
7.95
Sampled 4 Sep 2026, 27 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 7.95 | 7.95 |
| 10 Aug 2026, 11:03 | 8.02 | 8.02 |
| 22 Jul 2026, 10:45 | 8.08 | 8.08 |
| 29 Jun 2026, 11:40 | 8.05 | 8.05 |
| 6 May 2026, 13:03 | 8.19 | 8.19 |
| 16 Apr 2026, 13:58 | 8.18 | 8.18 |
| 24 Mar 2026, 11:58 | 8.13 | 8.13 |
| 5 Feb 2026, 11:43 | 7.93 | 7.93 |
| 15 Jan 2026, 10:39 | 8.11 | 8.11 |
| 16 Dec 2025, 11:20 | 7.63 | 7.63 |
| 4 Nov 2025, 12:05 | 7.99 | 7.99 |
| 2 Oct 2025, 12:44 | 7.99 | 7.99 |
| 11 Sep 2025, 13:05 | 7.93 | 7.93 |
| 21 Aug 2025, 11:20 | 8.1 | 8.1 |
| 12 Aug 2025, 11:33 | 8.11 | 8.11 |
| 23 Jul 2025, 11:44 | 8.07 | 8.07 |
| 24 Jun 2025, 10:31 | 8.21 | 8.21 |
| 30 May 2025, 09:48 | 8.27 | 8.27 |
| 3 Apr 2025, 10:56 | 8.19 | 8.19 |
| 5 Mar 2025, 13:13 | 8.17 | 8.17 |
| 6 Feb 2025, 13:03 | 8.13 | 8.13 |
| 6 Dec 2024, 11:43 | 7.87 | 7.87 |
| 11 Nov 2024, 10:48 | 8.09 | 8.09 |
| 6 Sep 2024, 12:17 | 7.95 | 7.95 |
| 7 Aug 2024, 12:19 | 8.01 | 8.01 |
| 5 Jul 2024, 13:02 | 8.29 | 8.29 |
| 13 Jun 2024, 11:43 | 8.32 | 8.32 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Sep 2026, 27 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Aug 2026, 11:03 | 0.041 | 0.041 mg/l |
| 22 Jul 2026, 10:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jun 2026, 11:40 | 0.1 | 0.1 mg/l |
| 6 May 2026, 13:03 | 0.11 | 0.11 mg/l |
| 16 Apr 2026, 13:58 | 0.048 | 0.048 mg/l |
| 24 Mar 2026, 11:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 11:43 | 0.035 | 0.035 mg/l |
| 15 Jan 2026, 10:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Dec 2025, 11:20 | 0.033 | 0.033 mg/l |
| 4 Nov 2025, 12:05 | 0.097 | 0.097 mg/l |
| 2 Oct 2025, 12:44 | 0.052 | 0.052 mg/l |
| 11 Sep 2025, 13:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2025, 11:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Aug 2025, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2025, 11:44 | 0.053 | 0.053 mg/l |
| 24 Jun 2025, 10:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 May 2025, 09:48 | 0.14 | 0.14 mg/l |
| 5 Mar 2025, 13:13 | 0.063 | 0.063 mg/l |
| 6 Feb 2025, 13:03 | 0.052 | 0.052 mg/l |
| 11 Nov 2024, 10:48 | 0.1 | 0.1 mg/l |
| 6 Sep 2024, 12:17 | 0.12 | 0.12 mg/l |
| 7 Aug 2024, 12:19 | 0.053 | 0.053 mg/l |
| 5 Jul 2024, 13:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jun 2024, 11:43 | 0.037 | 0.037 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.19 mg/l
Sampled 4 Sep 2026, 27 days ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 1.19 | 1.19 mg/l |
| 10 Aug 2026, 11:03 | 2.09 | 2.09 mg/l |
| 22 Jul 2026, 10:45 | 2.19 | 2.19 mg/l |
| 29 Jun 2026, 11:40 | 2.27 | 2.27 mg/l |
| 6 May 2026, 13:03 | 3.87 | 3.87 mg/l |
| 16 Apr 2026, 13:58 | 3.97 | 3.97 mg/l |
| 24 Mar 2026, 11:58 | 0.996 | 0.996 mg/l |
| 5 Feb 2026, 11:43 | 2.29 | 2.29 mg/l |
| 15 Jan 2026, 10:39 | 0.836 | 0.836 mg/l |
| 16 Dec 2025, 11:20 | 3.69 | 3.69 mg/l |
| 4 Nov 2025, 12:05 | 1.58 | 1.58 mg/l |
| 2 Oct 2025, 12:44 | 1.69 | 1.69 mg/l |
| 11 Sep 2025, 13:05 | 1.79 | 1.79 mg/l |
| 12 Aug 2025, 11:33 | 2.39 | 2.39 mg/l |
| 23 Jul 2025, 11:44 | 2.19 | 2.19 mg/l |
| 24 Jun 2025, 10:31 | 2.78 | 2.78 mg/l |
| 30 May 2025, 09:48 | 3.13 | 3.13 mg/l |
| 5 Mar 2025, 13:13 | 4.38 | 4.38 mg/l |
| 6 Feb 2025, 13:03 | 4.39 | 4.39 mg/l |
| 11 Nov 2024, 10:48 | 4.39 | 4.39 mg/l |
| 6 Sep 2024, 12:17 | 14.9 | 14.9 mg/l |
| 7 Aug 2024, 12:19 | 3.35 | 3.35 mg/l |
| 5 Jul 2024, 13:02 | 3.89 | 3.89 mg/l |
| 13 Jun 2024, 11:43 | 5.48 | 5.48 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.13 mg/l
Sampled 4 Sep 2026, 27 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 0.13 | 0.13 mg/l |
| 10 Aug 2026, 11:03 | 0.12 | 0.12 mg/l |
| 22 Jul 2026, 10:45 | 0.13 | 0.13 mg/l |
| 29 Jun 2026, 11:40 | 0.12 | 0.12 mg/l |
| 6 May 2026, 13:03 | 0.09 | 0.09 mg/l |
| 16 Apr 2026, 13:58 | 0.089 | 0.089 mg/l |
| 24 Mar 2026, 11:58 | 0.021 | 0.021 mg/l |
| 5 Feb 2026, 11:43 | 0.097 | 0.097 mg/l |
| 15 Jan 2026, 10:39 | 0.091 | 0.091 mg/l |
| 16 Dec 2025, 11:20 | 0.15 | 0.15 mg/l |
| 4 Nov 2025, 12:05 | 0.11 | 0.11 mg/l |
| 2 Oct 2025, 12:44 | 0.1 | 0.1 mg/l |
| 11 Sep 2025, 13:05 | 0.15 | 0.15 mg/l |
| 21 Aug 2025, 11:20 | 0.1 | 0.1 mg/l |
| 12 Aug 2025, 11:33 | 0.11 | 0.11 mg/l |
| 23 Jul 2025, 11:44 | 0.13 | 0.13 mg/l |
| 24 Jun 2025, 10:31 | 0.11 | 0.11 mg/l |
| 30 May 2025, 09:48 | 0.14 | 0.14 mg/l |
| 5 Mar 2025, 13:13 | 0.036 | 0.036 mg/l |
| 6 Feb 2025, 13:03 | 0.046 | 0.046 mg/l |
| 11 Nov 2024, 10:48 | 0.061 | 0.061 mg/l |
| 6 Sep 2024, 12:17 | 0.16 | 0.16 mg/l |
| 7 Aug 2024, 12:19 | 0.17 | 0.17 mg/l |
| 5 Jul 2024, 13:02 | 0.073 | 0.073 mg/l |
| 13 Jun 2024, 11:43 | 0.065 | 0.065 mg/l |
Turbidity
code 6396 · NTU
6 NTU
Sampled 21 Aug 2025, 13 months ago · 1 result banked
Every result (1)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Aug 2025, 11:20 | 6 | 6 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
897 µS/cm
Sampled 4 Sep 2026, 27 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:30 | 897 | 897 µS/cm |
| 10 Aug 2026, 11:03 | 910 | 910 µS/cm |
| 22 Jul 2026, 10:45 | 902 | 902 µS/cm |
| 29 Jun 2026, 11:40 | 887 | 887 µS/cm |
| 6 May 2026, 13:03 | 863 | 863 µS/cm |
| 16 Apr 2026, 13:58 | 849 | 849 µS/cm |
| 24 Mar 2026, 11:58 | 507 | 507 µS/cm |
| 5 Feb 2026, 11:43 | 510 | 510 µS/cm |
| 15 Jan 2026, 10:39 | 538 | 538 µS/cm |
| 16 Dec 2025, 11:20 | 466 | 466 µS/cm |
| 4 Nov 2025, 12:05 | 901 | 901 µS/cm |
| 2 Oct 2025, 12:44 | 892 | 892 µS/cm |
| 11 Sep 2025, 13:05 | 824 | 824 µS/cm |
| 21 Aug 2025, 11:20 | 885 | 885 µS/cm |
| 12 Aug 2025, 11:33 | 877 | 877 µS/cm |
| 23 Jul 2025, 11:44 | 878 | 878 µS/cm |
| 24 Jun 2025, 10:31 | 845 | 845 µS/cm |
| 30 May 2025, 09:48 | 1080 | 1080 µS/cm |
| 3 Apr 2025, 10:56 | 863 | 863 µS/cm |
| 5 Mar 2025, 13:13 | 843 | 843 µS/cm |
| 6 Feb 2025, 13:03 | 823 | 823 µS/cm |
| 6 Dec 2024, 11:43 | 673 | 673 µS/cm |
| 11 Nov 2024, 10:48 | 856 | 856 µS/cm |
| 6 Sep 2024, 12:17 | 792 | 792 µS/cm |
| 7 Aug 2024, 12:19 | 819 | 819 µS/cm |
| 5 Jul 2024, 13:02 | 867 | 867 µS/cm |
| 13 Jun 2024, 11:43 | 1053 | 1053 µS/cm |
Everything measured here
16 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 16 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Sep 2026 | 84.6% 4 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 26 | Jun 2024 – Sep 2026 | 7.84 mg/l 4 Sep 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Sep 2026 | 18.9 °C 4 Sep 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Sep 2026 | 7.95 4 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 25 | Jun 2024 – Sep 2026 | below 0.03 mg/l 4 Sep 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – Sep 2026 | 1.19 mg/l 4 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 25 | Jun 2024 – Sep 2026 | 0.13 mg/l 4 Sep 2026 |
| Turbidity 6396 | River water | 1 | Aug 2025 – Aug 2025 | 6 NTU 21 Aug 2025 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Sep 2026 | 897 µS/cm 4 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – Sep 2026 | 290 mg/l 4 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 25 | Jun 2024 – Sep 2026 | below 0.00093 mg/l 4 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 1 | Aug 2025 – Aug 2025 | below 2 mg/l 21 Aug 2025 |
| Chloride 0172 | River water | 1 | Aug 2025 – Aug 2025 | 66 mg/l 21 Aug 2025 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – Sep 2026 | 0.011 mg/l 4 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 25 | Jun 2024 – Sep 2026 | 1.2 mg/l 4 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Apr 2026 – Sep 2026 | 24 mg/l 4 Sep 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.