Stanbridge 40 m upstream of Petersfield sewage treatment works
EA name: STANBRIDGE 40M US PETERSFIELD STW (also listed as “RIVER ROTHER TRIBUTARY STANBRIDGE STREAM 40M UPSTREAM OF PETERSFIELD SEWAGE TREATMENT WORKS OUTFALL”)
Environment Agency sampling point SO-F0003019 · 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
- 12 Nov 2024, 11:1523 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
- 5 since 6 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 477082, 122725As published, to the nearest 1 m. Open in a map
- River, by its own name
- tributary of Stanbridge Stream
- River, by the map
- Stanbridge StreamOn an unmapped tributary: placed where it joins the river its name gives, 0 m from the line.
- Next gauge downstream
- Iping Mill On the River Rother · 12 km along the river
- Nearest gauge upstream
- Borough Grove On the Petersfield Stream · 4.6 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
82.4%
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 82.4 | 82.4% |
| 3 Sep 2024, 09:53 | 65.9 | 65.9% |
| 1 Aug 2024, 09:48 | 68.4 | 68.4% |
| 3 Jul 2024, 09:17 | 76.8 | 76.8% |
| 6 Jun 2024, 10:52 | 81.5 | 81.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.46 mg/l
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 9.46 | 9.46 mg/l |
| 3 Sep 2024, 09:53 | 6.66 | 6.66 mg/l |
| 1 Aug 2024, 09:48 | 6.79 | 6.79 mg/l |
| 3 Jul 2024, 09:17 | 7.98 | 7.98 mg/l |
| 6 Jun 2024, 10:52 | 8.64 | 8.64 mg/l |
Water temperature
code 0076 · °C
9.2 °C
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 9.2 | 9.2 °C |
| 3 Sep 2024, 09:53 | 14.8 | 14.8 °C |
| 1 Aug 2024, 09:48 | 15.6 | 15.6 °C |
| 3 Jul 2024, 09:17 | 13.5 | 13.5 °C |
| 6 Jun 2024, 10:52 | 12.6 | 12.6 °C |
pH
code 0061
7.19
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 7.19 | 7.19 |
| 3 Sep 2024, 09:53 | 6.7 | 6.7 |
| 1 Aug 2024, 09:48 | 7.26 | 7.26 |
| 3 Jul 2024, 09:17 | 7.3 | 7.3 |
| 6 Jun 2024, 10:52 | 7.64 | 7.64 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Sep 2024, 09:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2024, 09:48 | 0.091 | 0.091 mg/l |
| 3 Jul 2024, 09:17 | 0.032 | 0.032 mg/l |
| 6 Jun 2024, 10:52 | 0.065 | 0.065 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.59 mg/l
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 4.59 | 4.59 mg/l |
| 3 Sep 2024, 09:53 | 5.29 | 5.29 mg/l |
| 1 Aug 2024, 09:48 | 5.17 | 5.17 mg/l |
| 3 Jul 2024, 09:17 | 4.49 | 4.49 mg/l |
| 6 Jun 2024, 10:52 | 5.07 | 5.07 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.2 mg/l
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 0.2 | 0.2 mg/l |
| 3 Sep 2024, 09:53 | 0.15 | 0.15 mg/l |
| 1 Aug 2024, 09:48 | 0.18 | 0.18 mg/l |
| 3 Jul 2024, 09:17 | 0.2 | 0.2 mg/l |
| 6 Jun 2024, 10:52 | 0.18 | 0.18 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
495 µS/cm
Sampled 12 Nov 2024, 23 months ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Nov 2024, 11:15 | 495 | 495 µS/cm |
| 3 Sep 2024, 09:53 | 418 | 418 µS/cm |
| 1 Aug 2024, 09:48 | 491 | 491 µS/cm |
| 3 Jul 2024, 09:17 | 788 | 788 µS/cm |
| 6 Jun 2024, 10:52 | 952 | 952 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 | 5 | Jun 2024 – Nov 2024 | 82.4% 12 Nov 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 5 | Jun 2024 – Nov 2024 | 9.46 mg/l 12 Nov 2024 |
| Temperature of Water 0076 | River water | 5 | Jun 2024 – Nov 2024 | 9.2 °C 12 Nov 2024 |
| pH 0061 | River water | 5 | Jun 2024 – Nov 2024 | 7.19 12 Nov 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 5 | Jun 2024 – Nov 2024 | below 0.03 mg/l 12 Nov 2024 |
| Nitrate as N 0117 | River water | 5 | Jun 2024 – Nov 2024 | 4.59 mg/l 12 Nov 2024 |
| Orthophosphate, reactive as P 0180 | River water | 5 | Jun 2024 – Nov 2024 | 0.2 mg/l 12 Nov 2024 |
| Conductivity at 25 C 0077 | River water | 5 | Jun 2024 – Nov 2024 | 495 µS/cm 12 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 5 | Jun 2024 – Nov 2024 | 170 mg/l 12 Nov 2024 |
| Ammonia un-ionised as N 0119 | River water | 5 | Jun 2024 – Nov 2024 | below 0.00008 mg/l 12 Nov 2024 |
| Nitrite as N 0118 | River water | 5 | Jun 2024 – Nov 2024 | 0.0054 mg/l 12 Nov 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 5 | Jun 2024 – Nov 2024 | 4.6 mg/l 12 Nov 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.