Lydd Petty Sewer upstream of Lydd sewage treatment works
EA name: LYDD PETTY SEWER U/S LYDD STW
Environment Agency sampling point SO-E0007266 · 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
- 14 May 2026, 09:275 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
- 25 since 27 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 604113, 121190As published, to the nearest 1 m. Open in a map
- River, by its own name
- Lydd Petty Sewer
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Unplanned reactive monitoring (pollution incidents) (1 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
62.2%
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 62.2 | 62.2% |
| 16 Apr 2026, 09:19 | 71.4 | 71.4% |
| 10 Mar 2026, 08:42 | 56.7 | 56.7% |
| 16 Feb 2026, 15:11 | 75.2 | 75.2% |
| 5 Jan 2026, 12:08 | 48.9 | 48.9% |
| 1 Dec 2025, 08:27 | 17.4 | 17.4% |
| 7 Nov 2025, 13:51 | 19.8 | 19.8% |
| 2 Oct 2025, 13:28 | 21.6 | 21.6% |
| 3 Sep 2025, 09:02 | 42 | 42% |
| 11 Aug 2025, 13:45 | 99.6 | 99.6% |
| 10 Jul 2025, 15:00 | 20.1 | 20.1% |
| 10 Jun 2025, 15:24 | 63.6 | 63.6% |
| 13 May 2025, 10:01 | 57.5 | 57.5% |
| 16 Apr 2025, 14:38 | 86.4 | 86.4% |
| 19 Mar 2025, 12:59 | 81.8 | 81.8% |
| 25 Feb 2025, 11:28 | 51.7 | 51.7% |
| 11 Feb 2025, 11:06 | 41.1 | 41.1% |
| 30 Jan 2025, 14:48 | 41.5 | 41.5% |
| 17 Dec 2024, 11:00 | 32.8 | 32.8% |
| 21 Nov 2024, 09:58 | 31.6 | 31.6% |
| 24 Oct 2024, 13:44 | 16.8 | 16.8% |
| 18 Sep 2024, 09:02 | 33.3 | 33.3% |
| 27 Aug 2024, 13:34 | 12.4 | 12.4% |
| 17 Jul 2024, 09:57 | 36 | 36% |
| 27 Jun 2024, 11:00 | 46.8 | 46.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.86 mg/l
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 6.86 | 6.86 mg/l |
| 16 Apr 2026, 09:19 | 7.64 | 7.64 mg/l |
| 10 Mar 2026, 08:42 | 6.37 | 6.37 mg/l |
| 16 Feb 2026, 15:11 | 8.94 | 8.94 mg/l |
| 5 Jan 2026, 12:08 | 6.63 | 6.63 mg/l |
| 1 Dec 2025, 08:27 | 2.08 | 2.08 mg/l |
| 7 Nov 2025, 13:51 | 2.05 | 2.05 mg/l |
| 2 Oct 2025, 13:28 | 2.28 | 2.28 mg/l |
| 3 Sep 2025, 09:02 | 4.03 | 4.03 mg/l |
| 11 Aug 2025, 13:45 | 8.95 | 8.95 mg/l |
| 10 Jul 2025, 15:00 | 1.85 | 1.85 mg/l |
| 10 Jun 2025, 15:24 | 6.03 | 6.03 mg/l |
| 13 May 2025, 10:01 | 5.53 | 5.53 mg/l |
| 16 Apr 2025, 14:38 | 9.1 | 9.1 mg/l |
| 19 Mar 2025, 12:59 | 9.7 | 9.7 mg/l |
| 25 Feb 2025, 11:28 | 5.94 | 5.94 mg/l |
| 11 Feb 2025, 11:06 | 5.16 | 5.16 mg/l |
| 30 Jan 2025, 14:48 | 5.06 | 5.06 mg/l |
| 17 Dec 2024, 11:00 | 3.79 | 3.79 mg/l |
| 21 Nov 2024, 09:58 | 4.04 | 4.04 mg/l |
| 24 Oct 2024, 13:44 | 1.79 | 1.79 mg/l |
| 18 Sep 2024, 09:02 | 3.39 | 3.39 mg/l |
| 27 Aug 2024, 13:34 | 1.17 | 1.17 mg/l |
| 17 Jul 2024, 09:57 | 3.44 | 3.44 mg/l |
| 27 Jun 2024, 11:00 | 4.38 | 4.38 mg/l |
Water temperature
code 0076 · °C
10.9 °C
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 10.9 | 10.9 °C |
| 16 Apr 2026, 09:19 | 12.2 | 12.2 °C |
| 10 Mar 2026, 08:42 | 10.1 | 10.1 °C |
| 16 Feb 2026, 15:11 | 7.8 | 7.8 °C |
| 5 Jan 2026, 12:08 | 2.7 | 2.7 °C |
| 1 Dec 2025, 08:27 | 7.5 | 7.5 °C |
| 7 Nov 2025, 13:51 | 13.6 | 13.6 °C |
| 2 Oct 2025, 13:28 | 12.9 | 12.9 °C |
| 3 Sep 2025, 09:02 | 17.2 | 17.2 °C |
| 11 Aug 2025, 13:45 | 20.5 | 20.5 °C |
| 10 Jul 2025, 15:00 | 19.2 | 19.2 °C |
| 10 Jun 2025, 15:24 | 17.8 | 17.8 °C |
| 13 May 2025, 10:01 | 17.1 | 17.1 °C |
| 16 Apr 2025, 14:38 | 12.9 | 12.9 °C |
| 19 Mar 2025, 12:59 | 7.9 | 7.9 °C |
| 25 Feb 2025, 11:28 | 9.2 | 9.2 °C |
| 11 Feb 2025, 11:06 | 5.5 | 5.5 °C |
| 30 Jan 2025, 14:48 | 6.8 | 6.8 °C |
| 17 Dec 2024, 11:00 | 9 | 9 °C |
| 21 Nov 2024, 09:58 | 4.9 | 4.9 °C |
| 24 Oct 2024, 13:44 | 12.5 | 12.5 °C |
| 18 Sep 2024, 09:02 | 14.4 | 14.4 °C |
| 27 Aug 2024, 13:34 | 18 | 18 °C |
| 17 Jul 2024, 09:57 | 17.4 | 17.4 °C |
| 27 Jun 2024, 11:00 | 18.4 | 18.4 °C |
pH
code 0061
7.77
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 7.77 | 7.77 |
| 16 Apr 2026, 09:19 | 7.88 | 7.88 |
| 10 Mar 2026, 08:42 | 7.39 | 7.39 |
| 16 Feb 2026, 15:11 | 7.58 | 7.58 |
| 5 Jan 2026, 12:08 | 7.26 | 7.26 |
| 1 Dec 2025, 08:27 | 7.28 | 7.28 |
| 7 Nov 2025, 13:51 | 7.09 | 7.09 |
| 2 Oct 2025, 13:28 | 7.32 | 7.32 |
| 3 Sep 2025, 09:02 | 7.87 | 7.87 |
| 11 Aug 2025, 13:45 | 7.75 | 7.75 |
| 10 Jul 2025, 15:00 | 7.55 | 7.55 |
| 10 Jun 2025, 15:24 | 7.67 | 7.67 |
| 13 May 2025, 10:01 | 7.8 | 7.8 |
| 16 Apr 2025, 14:38 | 8.47 | 8.47 |
| 19 Mar 2025, 12:59 | 7.65 | 7.65 |
| 25 Feb 2025, 11:28 | 7.45 | 7.45 |
| 11 Feb 2025, 11:06 | 7.41 | 7.41 |
| 30 Jan 2025, 14:48 | 6.43 | 6.43 |
| 17 Dec 2024, 11:00 | 7.21 | 7.21 |
| 21 Nov 2024, 09:58 | 7.49 | 7.49 |
| 24 Oct 2024, 13:44 | 7.17 | 7.17 |
| 18 Sep 2024, 09:02 | 7.3 | 7.3 |
| 27 Aug 2024, 13:34 | 7.68 | 7.68 |
| 17 Jul 2024, 09:57 | 7.36 | 7.36 |
| 27 Jun 2024, 11:00 | 7.7 | 7.7 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.095 mg/l
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 0.095 | 0.095 mg/l |
| 16 Apr 2026, 09:19 | 0.13 | 0.13 mg/l |
| 10 Mar 2026, 08:42 | 0.22 | 0.22 mg/l |
| 16 Feb 2026, 15:11 | 0.76 | 0.76 mg/l |
| 5 Jan 2026, 12:08 | 0.7 | 0.7 mg/l |
| 1 Dec 2025, 08:27 | 1.4 | 1.4 mg/l |
| 7 Nov 2025, 13:51 | 1.1 | 1.1 mg/l |
| 2 Oct 2025, 13:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2025, 09:02 | 0.05 | 0.05 mg/l |
| 11 Aug 2025, 13:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jul 2025, 15:00 | 0.12 | 0.12 mg/l |
| 10 Jun 2025, 15:24 | 0.3 | 0.3 mg/l |
| 13 May 2025, 10:01 | 0.034 | 0.034 mg/l |
| 16 Apr 2025, 14:38 | 0.047 | 0.047 mg/l |
| 19 Mar 2025, 12:59 | 0.09 | 0.09 mg/l |
| 25 Feb 2025, 11:28 | 0.26 | 0.26 mg/l |
| 11 Feb 2025, 11:06 | 0.66 | 0.66 mg/l |
| 30 Jan 2025, 14:48 | 1.6 | 1.6 mg/l |
| 17 Dec 2024, 11:00 | 0.52 | 0.52 mg/l |
| 21 Nov 2024, 09:58 | 0.67 | 0.67 mg/l |
| 24 Oct 2024, 13:44 | 0.9 | 0.9 mg/l |
| 18 Sep 2024, 09:02 | 0.26 | 0.26 mg/l |
| 27 Aug 2024, 13:34 | 0.039 | 0.039 mg/l |
| 17 Jul 2024, 09:57 | 0.15 | 0.15 mg/l |
| 27 Jun 2024, 11:00 | 0.086 | 0.086 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | <0.196 | below 0.196 mg/l (not detected above this) |
| 16 Apr 2026, 09:19 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Mar 2026, 08:42 | 1.93 | 1.93 mg/l |
| 16 Feb 2026, 15:11 | 2.24 | 2.24 mg/l |
| 5 Jan 2026, 12:08 | 1.25 | 1.25 mg/l |
| 1 Dec 2025, 08:27 | 0.184 | 0.184 mg/l |
| 7 Nov 2025, 13:51 | <0.196 | below 0.196 mg/l (not detected above this) |
| 2 Oct 2025, 13:28 | <0.196 | below 0.196 mg/l (not detected above this) |
| 3 Sep 2025, 09:02 | <0.196 | below 0.196 mg/l (not detected above this) |
| 11 Aug 2025, 13:45 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jul 2025, 15:00 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jun 2025, 15:24 | <0.196 | below 0.196 mg/l (not detected above this) |
| 13 May 2025, 10:01 | <0.196 | below 0.196 mg/l (not detected above this) |
| 16 Apr 2025, 14:38 | <0.196 | below 0.196 mg/l (not detected above this) |
| 19 Mar 2025, 12:59 | 1.99 | 1.99 mg/l |
| 25 Feb 2025, 11:28 | 2.56 | 2.56 mg/l |
| 11 Feb 2025, 11:06 | 2.46 | 2.46 mg/l |
| 30 Jan 2025, 14:48 | 2.24 | 2.24 mg/l |
| 17 Dec 2024, 11:00 | 1.55 | 1.55 mg/l |
| 21 Nov 2024, 09:58 | 0.301 | 0.301 mg/l |
| 24 Oct 2024, 13:44 | 0.166 | 0.166 mg/l |
| 18 Sep 2024, 09:02 | <0.196 | below 0.196 mg/l (not detected above this) |
| 27 Aug 2024, 13:34 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Jul 2024, 09:57 | <0.196 | below 0.196 mg/l (not detected above this) |
| 27 Jun 2024, 11:00 | <0.196 | below 0.196 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.41 mg/l
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 0.41 | 0.41 mg/l |
| 16 Apr 2026, 09:19 | 0.21 | 0.21 mg/l |
| 10 Mar 2026, 08:42 | 0.16 | 0.16 mg/l |
| 16 Feb 2026, 15:11 | 0.19 | 0.19 mg/l |
| 5 Jan 2026, 12:08 | 0.21 | 0.21 mg/l |
| 1 Dec 2025, 08:27 | 0.37 | 0.37 mg/l |
| 7 Nov 2025, 13:51 | 0.71 | 0.71 mg/l |
| 2 Oct 2025, 13:28 | 1.3 | 1.3 mg/l |
| 3 Sep 2025, 09:02 | 1 | 1 mg/l |
| 11 Aug 2025, 13:45 | 0.7 | 0.7 mg/l |
| 10 Jul 2025, 15:00 | 0.81 | 0.81 mg/l |
| 10 Jun 2025, 15:24 | 0.64 | 0.64 mg/l |
| 13 May 2025, 10:01 | 0.29 | 0.29 mg/l |
| 16 Apr 2025, 14:38 | 0.22 | 0.22 mg/l |
| 19 Mar 2025, 12:59 | 0.13 | 0.13 mg/l |
| 25 Feb 2025, 11:28 | 0.15 | 0.15 mg/l |
| 11 Feb 2025, 11:06 | 0.17 | 0.17 mg/l |
| 30 Jan 2025, 14:48 | 0.17 | 0.17 mg/l |
| 17 Dec 2024, 11:00 | 0.21 | 0.21 mg/l |
| 21 Nov 2024, 09:58 | 0.23 | 0.23 mg/l |
| 24 Oct 2024, 13:44 | 0.35 | 0.35 mg/l |
| 18 Sep 2024, 09:02 | 0.54 | 0.54 mg/l |
| 27 Aug 2024, 13:34 | 1.9 | 1.9 mg/l |
| 17 Jul 2024, 09:57 | 0.64 | 0.64 mg/l |
| 27 Jun 2024, 11:00 | 0.25 | 0.25 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
830 µS/cm
Sampled 14 May 2026, 5 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 May 2026, 09:27 | 830 | 830 µS/cm |
| 16 Apr 2026, 09:19 | 789 | 789 µS/cm |
| 10 Mar 2026, 08:42 | 815 | 815 µS/cm |
| 16 Feb 2026, 15:11 | 756 | 756 µS/cm |
| 5 Jan 2026, 12:08 | 834 | 834 µS/cm |
| 1 Dec 2025, 08:27 | 758 | 758 µS/cm |
| 7 Nov 2025, 13:51 | 704 | 704 µS/cm |
| 2 Oct 2025, 13:28 | 550 | 550 µS/cm |
| 3 Sep 2025, 09:02 | 525 | 525 µS/cm |
| 11 Aug 2025, 13:45 | 556 | 556 µS/cm |
| 10 Jul 2025, 15:00 | 681 | 681 µS/cm |
| 10 Jun 2025, 15:24 | 730 | 730 µS/cm |
| 13 May 2025, 10:01 | 795 | 795 µS/cm |
| 16 Apr 2025, 14:38 | 756 | 756 µS/cm |
| 19 Mar 2025, 12:59 | 829 | 829 µS/cm |
| 25 Feb 2025, 11:28 | 773 | 773 µS/cm |
| 11 Feb 2025, 11:06 | 765 | 765 µS/cm |
| 30 Jan 2025, 14:48 | 820 | 820 µS/cm |
| 17 Dec 2024, 11:00 | 838 | 838 µS/cm |
| 21 Nov 2024, 09:58 | 756 | 756 µS/cm |
| 24 Oct 2024, 13:44 | 746 | 746 µS/cm |
| 18 Sep 2024, 09:02 | 630 | 630 µS/cm |
| 27 Aug 2024, 13:34 | 644 | 644 µS/cm |
| 17 Jul 2024, 09:57 | 722 | 722 µS/cm |
| 27 Jun 2024, 11:00 | 790 | 790 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 25 | Jun 2024 – May 2026 | 62.2% 14 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Jun 2024 – May 2026 | 6.86 mg/l 14 May 2026 |
| Temperature of Water 0076 | River water | 25 | Jun 2024 – May 2026 | 10.9 °C 14 May 2026 |
| pH 0061 | River water | 25 | Jun 2024 – May 2026 | 7.77 14 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 25 | Jun 2024 – May 2026 | 0.095 mg/l 14 May 2026 |
| Nitrate as N 0117 | River water | 25 | Jun 2024 – May 2026 | below 0.196 mg/l 14 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 25 | Jun 2024 – May 2026 | 0.41 mg/l 14 May 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Jun 2024 – May 2026 | 830 µS/cm 14 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 25 | Jun 2024 – May 2026 | 260 mg/l 14 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 25 | Jun 2024 – May 2026 | 0.0011 mg/l 14 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | below 3 mg/l 14 May 2026 |
| Nitrite as N 0118 | River water | 25 | Jun 2024 – May 2026 | below 0.004 mg/l 14 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 25 | Jun 2024 – May 2026 | below 0.2 mg/l 14 May 2026 |
| Salinity : In Situ 7608 | River water | 1 | Feb 2025 – Feb 2025 | 0.37 parts per thousand 11 Feb 2025 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 1 | Feb 2025 – Feb 2025 | Not found 11 Feb 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.