River Frome at Notton
EA name: RIVER FROME AT NOTTON
Environment Agency sampling point SW-50530138 · 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
- 9 Dec 2024, 10:5523 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 25 Oct 2026 and had nothing newer.
- Samples banked
- 13 since 11 Oct 2023 Imported periods: 1 Oct 2023 – 25 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 360931, 95991As published, to the nearest 1 m. Open in a map
- River, by its own name
- Frome
- River, by the map
- River FromePlaced on the river its name gives, 10 m from the line.
- Next gauge downstream
- Louds Mill On the River Frome · 14 km along the river
- Nearest gauge upstream
- Maiden Newton On the River Frome · 3.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (13 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
96.5%
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 96.5 | 96.5% |
| 3 Dec 2024, 11:08 | 94.9 | 94.9% |
| 12 Nov 2024, 12:09 | 101.6 | 101.6% |
| 4 Oct 2024, 10:55 | 98 | 98% |
| 27 Sep 2024, 12:15 | 97.8 | 97.8% |
| 4 Jul 2024, 11:16 | 113.7 | 113.7% |
| 4 Jun 2024, 09:45 | 95.8 | 95.8% |
| 4 Mar 2024, 14:08 | 97.3 | 97.3% |
| 2 Feb 2024, 12:00 | 105 | 105% |
| 8 Jan 2024, 10:27 | 97.2 | 97.2% |
| 7 Dec 2023, 11:49 | 91.4 | 91.4% |
| 1 Nov 2023, 10:09 | 93.5 | 93.5% |
| 11 Oct 2023, 11:16 | 95.8 | 95.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.3 mg/l
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 11.3 | 11.3 mg/l |
| 3 Dec 2024, 11:08 | 11.1 | 11.1 mg/l |
| 12 Nov 2024, 12:09 | 11.6 | 11.6 mg/l |
| 4 Oct 2024, 10:55 | 11 | 11 mg/l |
| 27 Sep 2024, 12:15 | 10.4 | 10.4 mg/l |
| 4 Jul 2024, 11:16 | 11.8 | 11.8 mg/l |
| 4 Jun 2024, 09:45 | 10.2 | 10.2 mg/l |
| 4 Mar 2024, 14:08 | 11.4 | 11.4 mg/l |
| 2 Feb 2024, 12:00 | 12.1 | 12.1 mg/l |
| 8 Jan 2024, 10:27 | 11.9 | 11.9 mg/l |
| 7 Dec 2023, 11:49 | 10.8 | 10.8 mg/l |
| 1 Nov 2023, 10:09 | 10.1 | 10.1 mg/l |
| 11 Oct 2023, 11:16 | 9.8 | 9.8 mg/l |
Water temperature
code 0076 · °C
8.5 °C
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 8.5 | 8.5 °C |
| 3 Dec 2024, 11:08 | 8.4 | 8.4 °C |
| 12 Nov 2024, 12:09 | 9.5 | 9.5 °C |
| 4 Oct 2024, 10:55 | 10.3 | 10.3 °C |
| 27 Sep 2024, 12:15 | 12.5 | 12.5 °C |
| 4 Jul 2024, 11:16 | 13.7 | 13.7 °C |
| 4 Jun 2024, 09:45 | 12.6 | 12.6 °C |
| 4 Mar 2024, 14:08 | 8.3 | 8.3 °C |
| 2 Feb 2024, 12:00 | 9.1 | 9.1 °C |
| 8 Jan 2024, 10:27 | 6.7 | 6.7 °C |
| 7 Dec 2023, 11:49 | 8 | 8 °C |
| 1 Nov 2023, 10:09 | 12 | 12 °C |
| 11 Oct 2023, 11:16 | 14.2 | 14.2 °C |
pH
code 0061
8.41
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 8.41 | 8.41 |
| 3 Dec 2024, 11:08 | 8.28 | 8.28 |
| 12 Nov 2024, 12:09 | 8.25 | 8.25 |
| 4 Oct 2024, 10:55 | 8.12 | 8.12 |
| 27 Sep 2024, 12:15 | 8.1 | 8.1 |
| 4 Jul 2024, 11:16 | 8.66 | 8.66 |
| 4 Jun 2024, 09:45 | 7.96 | 7.96 |
| 4 Mar 2024, 14:08 | 8.09 | 8.09 |
| 2 Feb 2024, 12:00 | 8.32 | 8.32 |
| 8 Jan 2024, 10:27 | 8.15 | 8.15 |
| 7 Dec 2023, 11:49 | 7.73 | 7.73 |
| 1 Nov 2023, 10:09 | 7.8 | 7.8 |
| 11 Oct 2023, 11:16 | 8.13 | 8.13 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Dec 2024, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Nov 2024, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Oct 2024, 10:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Sep 2024, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jul 2024, 11:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jun 2024, 09:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2024, 14:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2024, 12:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2024, 10:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Dec 2023, 11:49 | 0.06 | 0.06 mg/l |
| 1 Nov 2023, 10:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Oct 2023, 11:16 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.49 mg/l
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 3.49 | 3.49 mg/l |
| 3 Dec 2024, 11:08 | 3.89 | 3.89 mg/l |
| 12 Nov 2024, 12:09 | 3.99 | 3.99 mg/l |
| 4 Oct 2024, 10:55 | 3.19 | 3.19 mg/l |
| 27 Sep 2024, 12:15 | 2.09 | 2.09 mg/l |
| 4 Jul 2024, 11:16 | 3.99 | 3.99 mg/l |
| 4 Jun 2024, 09:45 | 3.69 | 3.69 mg/l |
| 4 Mar 2024, 14:08 | 3.99 | 3.99 mg/l |
| 2 Feb 2024, 12:00 | 4.39 | 4.39 mg/l |
| 8 Jan 2024, 10:27 | 6.49 | 6.49 mg/l |
| 7 Dec 2023, 11:49 | 1.59 | 1.59 mg/l |
| 1 Nov 2023, 10:09 | 2.09 | 2.09 mg/l |
| 11 Oct 2023, 11:16 | 3.29 | 3.29 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.069 mg/l
Sampled 3 Dec 2024, 23 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Dec 2024, 11:08 | 0.069 | 0.069 mg/l |
| 12 Nov 2024, 12:09 | 0.061 | 0.061 mg/l |
| 4 Oct 2024, 10:55 | 0.072 | 0.072 mg/l |
| 27 Sep 2024, 12:15 | 0.081 | 0.081 mg/l |
| 4 Jul 2024, 11:16 | 0.061 | 0.061 mg/l |
| 4 Jun 2024, 09:45 | 0.059 | 0.059 mg/l |
| 4 Mar 2024, 14:08 | 0.08 | 0.08 mg/l |
| 2 Feb 2024, 12:00 | 0.068 | 0.068 mg/l |
| 8 Jan 2024, 10:27 | 0.081 | 0.081 mg/l |
| 7 Dec 2023, 11:49 | 0.082 | 0.082 mg/l |
| 1 Nov 2023, 10:09 | 0.085 | 0.085 mg/l |
| 11 Oct 2023, 11:16 | 0.071 | 0.071 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
522 µS/cm
Sampled 9 Dec 2024, 23 months ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Dec 2024, 10:55 | 522 | 522 µS/cm |
| 3 Dec 2024, 11:08 | 477 | 477 µS/cm |
| 12 Nov 2024, 12:09 | 536 | 536 µS/cm |
| 4 Oct 2024, 10:55 | 494 | 494 µS/cm |
| 27 Sep 2024, 12:15 | 363 | 363 µS/cm |
| 4 Jul 2024, 11:16 | 566 | 566 µS/cm |
| 4 Jun 2024, 09:45 | 541 | 541 µS/cm |
| 4 Mar 2024, 14:08 | 500 | 500 µS/cm |
| 2 Feb 2024, 12:00 | 529 | 529 µS/cm |
| 8 Jan 2024, 10:27 | 552 | 552 µS/cm |
| 7 Dec 2023, 11:49 | 263 | 263 µS/cm |
| 1 Nov 2023, 10:09 | 347 | 347 µS/cm |
| 11 Oct 2023, 11:16 | 536 | 536 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
3300 per 100 ml
Sampled 7 Dec 2023, 2.9 years ago · 3 results banked
Every result (3)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Dec 2023, 11:49 | 3300 | 3300 per 100 ml |
| 1 Nov 2023, 10:09 | 2100 | 2100 per 100 ml |
| 11 Oct 2023, 11:16 | 720 | 720 per 100 ml |
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 | 13 | Oct 2023 – Dec 2024 | 96.5% 9 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 13 | Oct 2023 – Dec 2024 | 11.3 mg/l 9 Dec 2024 |
| Temperature of Water 0076 | River water | 13 | Oct 2023 – Dec 2024 | 8.5 °C 9 Dec 2024 |
| pH 0061 | River water | 13 | Oct 2023 – Dec 2024 | 8.41 9 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 13 | Oct 2023 – Dec 2024 | below 0.03 mg/l 9 Dec 2024 |
| Nitrate as N 0117 | River water | 13 | Oct 2023 – Dec 2024 | 3.49 mg/l 9 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Oct 2023 – Dec 2024 | 0.069 mg/l 3 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 13 | Oct 2023 – Dec 2024 | 522 µS/cm 9 Dec 2024 |
| Escherichia coli : Confirmed : MF 2348 | River water | 3 | Oct 2023 – Dec 2023 | 3300 per 100 ml 7 Dec 2023 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 13 | Oct 2023 – Dec 2024 | 220 mg/l 9 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 13 | Oct 2023 – Dec 2024 | below 0.00049 mg/l 9 Dec 2024 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 3 | Oct 2023 – Dec 2023 | 3600 colony forming units / 100ml 7 Dec 2023 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 3 | Oct 2023 – Dec 2023 | 3600 colony forming units / 100ml 7 Dec 2023 |
| Nitrite as N 0118 | River water | 13 | Oct 2023 – Dec 2024 | 0.007 mg/l 9 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 13 | Oct 2023 – Dec 2024 | 3.5 mg/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.