Swaton Eau
EA name: SWATON EAU
Environment Agency sampling point AN-SWATONEA · 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
- 7 Sep 2026, 11:1324 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 11 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 516223, 336018As published, to the nearest 1 m. Open in a map
- River, by its own name
- Swaton Eau
- River, by the map
- Swaton EauPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Swaton On the South Forty Foot Drain · 3.7 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
87.1%
Sampled 7 Sep 2026, 24 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 87.1 | 87.1% |
| 4 Aug 2026, 12:52 | 73.7 | 73.7% |
| 3 Jul 2026, 12:40 | 34.3 | 34.3% |
| 9 Jun 2026, 11:49 | 101.4 | 101.4% |
| 18 May 2026, 12:33 | 137.3 | 137.3% |
| 17 Apr 2026, 13:29 | 147.4 | 147.4% |
| 12 Mar 2026, 11:56 | 125.3 | 125.3% |
| 6 Feb 2026, 13:03 | 91 | 91% |
| 6 Jan 2026, 10:38 | 92.2 | 92.2% |
| 1 Dec 2025, 11:20 | 88.1 | 88.1% |
| 7 Nov 2025, 11:08 | 65.4 | 65.4% |
| 14 Oct 2025, 12:12 | 48.1 | 48.1% |
| 4 Apr 2025, 10:43 | 123.4 | 123.4% |
| 21 Mar 2025, 14:23 | 188.9 | 188.9% |
| 4 Feb 2025, 11:49 | 103.2 | 103.2% |
| 7 Jan 2025, 12:43 | 88.6 | 88.6% |
| 5 Dec 2024, 13:19 | 99.1 | 99.1% |
| 15 Nov 2024, 10:50 | 106.7 | 106.7% |
| 24 Oct 2024, 12:47 | 104.9 | 104.9% |
| 13 Sep 2024, 09:36 | 82 | 82% |
| 2 Aug 2024, 09:36 | 68.2 | 68.2% |
| 2 Jul 2024, 12:52 | 58.7 | 58.7% |
| 11 Jun 2024, 10:58 | 114 | 114% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.38 mg/l
Sampled 7 Sep 2026, 24 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 8.38 | 8.38 mg/l |
| 4 Aug 2026, 12:52 | 6.62 | 6.62 mg/l |
| 3 Jul 2026, 12:40 | 3.29 | 3.29 mg/l |
| 9 Jun 2026, 11:49 | 10.3 | 10.3 mg/l |
| 18 May 2026, 12:33 | 14.1 | 14.1 mg/l |
| 17 Apr 2026, 13:29 | 15.4 | 15.4 mg/l |
| 12 Mar 2026, 11:56 | 14.4 | 14.4 mg/l |
| 6 Feb 2026, 13:03 | 11.4 | 11.4 mg/l |
| 6 Jan 2026, 10:38 | 13.4 | 13.4 mg/l |
| 1 Dec 2025, 11:20 | 10.7 | 10.7 mg/l |
| 7 Nov 2025, 11:08 | 7.15 | 7.15 mg/l |
| 14 Oct 2025, 12:12 | 5.22 | 5.22 mg/l |
| 4 Apr 2025, 10:43 | 13.9 | 13.9 mg/l |
| 21 Mar 2025, 14:23 | 20.5 | 20.5 mg/l |
| 4 Feb 2025, 11:49 | 13.2 | 13.2 mg/l |
| 7 Jan 2025, 12:43 | 11.7 | 11.7 mg/l |
| 5 Dec 2024, 13:19 | 11.3 | 11.3 mg/l |
| 15 Nov 2024, 10:50 | 12.7 | 12.7 mg/l |
| 24 Oct 2024, 12:47 | 11.6 | 11.6 mg/l |
| 13 Sep 2024, 09:36 | 9.74 | 9.74 mg/l |
| 2 Aug 2024, 09:36 | 6.63 | 6.63 mg/l |
| 2 Jul 2024, 12:52 | 5.82 | 5.82 mg/l |
| 11 Jun 2024, 10:58 | 11.9 | 11.9 mg/l |
Water temperature
code 0076 · °C
17.1 °C
Sampled 7 Sep 2026, 24 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 17.1 | 17.1 °C |
| 4 Aug 2026, 12:52 | 20.5 | 20.5 °C |
| 3 Jul 2026, 12:40 | 17.3 | 17.3 °C |
| 9 Jun 2026, 11:49 | 14.5 | 14.5 °C |
| 18 May 2026, 12:33 | 13.9 | 13.9 °C |
| 17 Apr 2026, 13:29 | 13.4 | 13.4 °C |
| 12 Mar 2026, 11:56 | 9.2 | 9.2 °C |
| 6 Feb 2026, 13:03 | 5.8 | 5.8 °C |
| 6 Jan 2026, 10:38 | 0.2 | 0.2 °C |
| 1 Dec 2025, 11:20 | 7.1 | 7.1 °C |
| 7 Nov 2025, 11:08 | 11.3 | 11.3 °C |
| 14 Oct 2025, 12:12 | 11.6 | 11.6 °C |
| 4 Apr 2025, 10:43 | 9.9 | 9.9 °C |
| 21 Mar 2025, 14:23 | 11.7 | 11.7 °C |
| 4 Feb 2025, 11:49 | 4.9 | 4.9 °C |
| 7 Jan 2025, 12:43 | 3.8 | 3.8 °C |
| 5 Dec 2024, 13:19 | 9.6 | 9.6 °C |
| 15 Nov 2024, 10:50 | 7.8 | 7.8 °C |
| 24 Oct 2024, 12:47 | 10.7 | 10.7 °C |
| 13 Sep 2024, 09:36 | 7.8 | 7.8 °C |
| 2 Aug 2024, 09:36 | 16.6 | 16.6 °C |
| 2 Jul 2024, 12:52 | 15.7 | 15.7 °C |
| 11 Jun 2024, 10:58 | 13.4 | 13.4 °C |
pH
code 0061
7.46
Sampled 7 Sep 2026, 24 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 7.46 | 7.46 |
| 4 Aug 2026, 12:52 | 7.57 | 7.57 |
| 3 Jul 2026, 12:40 | 7.29 | 7.29 |
| 9 Jun 2026, 11:49 | 7.64 | 7.64 |
| 18 May 2026, 12:33 | 8.22 | 8.22 |
| 17 Apr 2026, 13:29 | 8.34 | 8.34 |
| 12 Mar 2026, 11:56 | 8.33 | 8.33 |
| 6 Feb 2026, 13:03 | 7.92 | 7.92 |
| 6 Jan 2026, 10:38 | 8.6 | 8.6 |
| 1 Dec 2025, 11:20 | 7.86 | 7.86 |
| 7 Nov 2025, 11:08 | 7.59 | 7.59 |
| 14 Oct 2025, 12:12 | 7.32 | 7.32 |
| 4 Apr 2025, 10:43 | 8.29 | 8.29 |
| 21 Mar 2025, 14:23 | 8.79 | 8.79 |
| 4 Feb 2025, 11:49 | 8.2 | 8.2 |
| 7 Jan 2025, 12:43 | 7.71 | 7.71 |
| 5 Dec 2024, 13:19 | 8.15 | 8.15 |
| 15 Nov 2024, 10:50 | 8.16 | 8.16 |
| 24 Oct 2024, 12:47 | 8.15 | 8.15 |
| 13 Sep 2024, 09:36 | 8.19 | 8.19 |
| 2 Aug 2024, 09:36 | 7.6 | 7.6 |
| 2 Jul 2024, 12:52 | 7.72 | 7.72 |
| 11 Jun 2024, 10:58 | 8.07 | 8.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 7 Sep 2026, 24 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Aug 2026, 12:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jul 2026, 12:40 | 0.07 | 0.07 mg/l |
| 9 Jun 2026, 11:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 May 2026, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2026, 13:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 11:56 | 0.16 | 0.16 mg/l |
| 6 Feb 2026, 13:03 | 0.059 | 0.059 mg/l |
| 6 Jan 2026, 10:38 | 0.16 | 0.16 mg/l |
| 1 Dec 2025, 11:20 | 0.11 | 0.11 mg/l |
| 7 Nov 2025, 11:08 | 0.099 | 0.099 mg/l |
| 14 Oct 2025, 12:12 | 0.053 | 0.053 mg/l |
| 21 Mar 2025, 14:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Feb 2025, 11:49 | 0.32 | 0.32 mg/l |
| 7 Jan 2025, 12:43 | 0.045 | 0.045 mg/l |
| 15 Nov 2024, 10:50 | 0.072 | 0.072 mg/l |
| 24 Oct 2024, 12:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Sep 2024, 09:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Aug 2024, 09:36 | 0.045 | 0.045 mg/l |
| 2 Jul 2024, 12:52 | 0.082 | 0.082 mg/l |
| 11 Jun 2024, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.376 mg/l
Sampled 7 Sep 2026, 24 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 0.376 | 0.376 mg/l |
| 4 Aug 2026, 12:52 | 0.505 | 0.505 mg/l |
| 3 Jul 2026, 12:40 | 0.422 | 0.422 mg/l |
| 9 Jun 2026, 11:49 | 1.66 | 1.66 mg/l |
| 18 May 2026, 12:33 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Apr 2026, 13:29 | 4.76 | 4.76 mg/l |
| 12 Mar 2026, 11:56 | 9.6 | 9.6 mg/l |
| 6 Feb 2026, 13:03 | 7.28 | 7.28 mg/l |
| 6 Jan 2026, 10:38 | 15 | 15 mg/l |
| 1 Dec 2025, 11:20 | 29.9 | 29.9 mg/l |
| 7 Nov 2025, 11:08 | 1.75 | 1.75 mg/l |
| 14 Oct 2025, 12:12 | 1.56 | 1.56 mg/l |
| 21 Mar 2025, 14:23 | 6.35 | 6.35 mg/l |
| 4 Feb 2025, 11:49 | 9.96 | 9.96 mg/l |
| 7 Jan 2025, 12:43 | 7.89 | 7.89 mg/l |
| 15 Nov 2024, 10:50 | 5.41 | 5.41 mg/l |
| 24 Oct 2024, 12:47 | 8.37 | 8.37 mg/l |
| 13 Sep 2024, 09:36 | 4.58 | 4.58 mg/l |
| 2 Aug 2024, 09:36 | 0.195 | 0.195 mg/l |
| 2 Jul 2024, 12:52 | 3.28 | 3.28 mg/l |
| 11 Jun 2024, 10:58 | 4.07 | 4.07 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.099 mg/l
Sampled 7 Sep 2026, 24 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 0.099 | 0.099 mg/l |
| 4 Aug 2026, 12:52 | 0.035 | 0.035 mg/l |
| 3 Jul 2026, 12:40 | 0.15 | 0.15 mg/l |
| 9 Jun 2026, 11:49 | 0.091 | 0.091 mg/l |
| 18 May 2026, 12:33 | 0.018 | 0.018 mg/l |
| 17 Apr 2026, 13:29 | 0.088 | 0.088 mg/l |
| 12 Mar 2026, 11:56 | 0.075 | 0.075 mg/l |
| 6 Feb 2026, 13:03 | 0.084 | 0.084 mg/l |
| 6 Jan 2026, 10:38 | 0.13 | 0.13 mg/l |
| 1 Dec 2025, 11:20 | 0.09 | 0.09 mg/l |
| 7 Nov 2025, 11:08 | 0.31 | 0.31 mg/l |
| 14 Oct 2025, 12:12 | 0.23 | 0.23 mg/l |
| 21 Mar 2025, 14:23 | 0.058 | 0.058 mg/l |
| 4 Feb 2025, 11:49 | 0.078 | 0.078 mg/l |
| 7 Jan 2025, 12:43 | 0.14 | 0.14 mg/l |
| 15 Nov 2024, 10:50 | 0.22 | 0.22 mg/l |
| 24 Oct 2024, 12:47 | 0.075 | 0.075 mg/l |
| 13 Sep 2024, 09:36 | 0.19 | 0.19 mg/l |
| 2 Aug 2024, 09:36 | 0.069 | 0.069 mg/l |
| 2 Jul 2024, 12:52 | 0.056 | 0.056 mg/l |
| 11 Jun 2024, 10:58 | 0.064 | 0.064 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
744 µS/cm
Sampled 7 Sep 2026, 24 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:13 | 744 | 744 µS/cm |
| 4 Aug 2026, 12:52 | 773 | 773 µS/cm |
| 3 Jul 2026, 12:40 | 792 | 792 µS/cm |
| 9 Jun 2026, 11:49 | 763 | 763 µS/cm |
| 18 May 2026, 12:33 | 783 | 783 µS/cm |
| 17 Apr 2026, 13:29 | 814 | 814 µS/cm |
| 12 Mar 2026, 11:56 | 869 | 869 µS/cm |
| 6 Feb 2026, 13:03 | 429 | 429 µS/cm |
| 6 Jan 2026, 10:38 | 960 | 960 µS/cm |
| 1 Dec 2025, 11:20 | 897 | 897 µS/cm |
| 7 Nov 2025, 11:08 | 841 | 841 µS/cm |
| 14 Oct 2025, 12:12 | 776 | 776 µS/cm |
| 4 Apr 2025, 10:43 | 856 | 856 µS/cm |
| 21 Mar 2025, 14:23 | 851 | 851 µS/cm |
| 4 Feb 2025, 11:49 | 922 | 922 µS/cm |
| 7 Jan 2025, 12:43 | 491 | 491 µS/cm |
| 5 Dec 2024, 13:19 | 894 | 894 µS/cm |
| 15 Nov 2024, 10:50 | 864 | 864 µS/cm |
| 24 Oct 2024, 12:47 | 943 | 943 µS/cm |
| 13 Sep 2024, 09:36 | 868 | 868 µS/cm |
| 2 Aug 2024, 09:36 | 796 | 796 µS/cm |
| 2 Jul 2024, 12:52 | 791 | 791 µS/cm |
| 11 Jun 2024, 10:58 | 818 | 818 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Jun 2024 – Sep 2026 | 87.1% 7 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jun 2024 – Sep 2026 | 8.38 mg/l 7 Sep 2026 |
| Temperature of Water 0076 | River water | 23 | Jun 2024 – Sep 2026 | 17.1 °C 7 Sep 2026 |
| pH 0061 | River water | 23 | Jun 2024 – Sep 2026 | 7.46 7 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Jun 2024 – Sep 2026 | below 0.03 mg/l 7 Sep 2026 |
| Nitrate as N 0117 | River water | 21 | Jun 2024 – Sep 2026 | 0.376 mg/l 7 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Jun 2024 – Sep 2026 | 0.099 mg/l 7 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Jun 2024 – Sep 2026 | 744 µS/cm 7 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Jun 2024 – Sep 2026 | 190 mg/l 7 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Jun 2024 – Sep 2026 | below 0.00027 mg/l 7 Sep 2026 |
| Nitrite as N 0118 | River water | 21 | Jun 2024 – Sep 2026 | 0.014 mg/l 7 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Jun 2024 – Sep 2026 | 0.39 mg/l 7 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.