River Mease - downstream of Snarestone sewage treatment works
EA name: RIVER MEASE - DS SNARESTONE STW
Environment Agency sampling point MD-58473850 · 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
- 15 Sep 2026, 13:4716 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 31 since 16 Oct 2023 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 433817, 309964As published, to the nearest 1 m. Open in a map
- River, by its own name
- Mease
- River, by the map
- River MeasePlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Clifton Hall On the River Mease · 14 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (17 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Monitoring (national agency policy) (2 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
166.2%
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 166.2 | 166.2% |
| 2 Jul 2026, 12:32 | 111.2 | 111.2% |
| 2 Jun 2026, 12:33 | 73.2 | 73.2% |
| 21 May 2026, 12:52 | 83.7 | 83.7% |
| 22 Apr 2026, 12:19 | 91.6 | 91.6% |
| 3 Mar 2026, 12:20 | 88.9 | 88.9% |
| 11 Feb 2026, 11:31 | 93.6 | 93.6% |
| 17 Dec 2025, 13:58 | 84.6 | 84.6% |
| 11 Nov 2025, 10:30 | 57.6 | 57.6% |
| 9 Oct 2025, 11:53 | 81.8 | 81.8% |
| 4 Sep 2025, 11:02 | 91.6 | 91.6% |
| 15 Aug 2025, 11:27 | 70.1 | 70.1% |
| 7 Jul 2025, 11:38 | 61.2 | 61.2% |
| 12 Jun 2025, 10:01 | 52.2 | 52.2% |
| 9 May 2025, 13:46 | 87 | 87% |
| 23 Apr 2025, 09:49 | 90.7 | 90.7% |
| 17 Feb 2025, 12:25 | 93.6 | 93.6% |
| 29 Jan 2025, 11:10 | 96.5 | 96.5% |
| 24 Oct 2024, 10:08 | 93.6 | 93.6% |
| 23 Aug 2024, 10:07 | 75.1 | 75.1% |
| 22 Jul 2024, 11:10 | 86 | 86% |
| 28 Jun 2024, 10:47 | 81.5 | 81.5% |
| 22 May 2024, 10:14 | 91 | 91% |
| 22 Apr 2024, 09:03 | 95.1 | 95.1% |
| 19 Mar 2024, 09:54 | 93.8 | 93.8% |
| 28 Feb 2024, 14:22 | 91.2 | 91.2% |
| 25 Jan 2024, 09:40 | 90.2 | 90.2% |
| 1 Dec 2023, 11:27 | 90.1 | 90.1% |
| 21 Nov 2023, 12:32 | 86.4 | 86.4% |
| 16 Oct 2023, 10:51 | 88 | 88% |
Dissolved oxygen
as O2 · code 9924 · mg/l
15.8 mg/l
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 15.8 | 15.8 mg/l |
| 2 Jul 2026, 12:32 | 9.74 | 9.74 mg/l |
| 2 Jun 2026, 12:33 | 7.13 | 7.13 mg/l |
| 21 May 2026, 12:52 | 8.88 | 8.88 mg/l |
| 22 Apr 2026, 12:19 | 10.3 | 10.3 mg/l |
| 3 Mar 2026, 12:20 | 10.4 | 10.4 mg/l |
| 11 Feb 2026, 11:31 | 11 | 11 mg/l |
| 17 Dec 2025, 13:58 | 10.2 | 10.2 mg/l |
| 11 Nov 2025, 10:30 | 6.43 | 6.43 mg/l |
| 9 Oct 2025, 11:53 | 8.72 | 8.72 mg/l |
| 4 Sep 2025, 11:02 | 9.23 | 9.23 mg/l |
| 15 Aug 2025, 11:27 | 6.57 | 6.57 mg/l |
| 7 Jul 2025, 11:38 | 6.02 | 6.02 mg/l |
| 12 Jun 2025, 10:01 | 5.26 | 5.26 mg/l |
| 9 May 2025, 13:46 | 9.29 | 9.29 mg/l |
| 23 Apr 2025, 09:49 | 10.1 | 10.1 mg/l |
| 17 Feb 2025, 12:25 | 12.2 | 12.2 mg/l |
| 29 Jan 2025, 11:10 | 12.1 | 12.1 mg/l |
| 24 Oct 2024, 10:08 | 10.4 | 10.4 mg/l |
| 23 Aug 2024, 10:07 | 7.5 | 7.5 mg/l |
| 22 Jul 2024, 11:10 | 8.34 | 8.34 mg/l |
| 28 Jun 2024, 10:47 | 8.23 | 8.23 mg/l |
| 22 May 2024, 10:14 | 9.29 | 9.29 mg/l |
| 22 Apr 2024, 09:03 | 10.8 | 10.8 mg/l |
| 19 Mar 2024, 09:54 | 10.5 | 10.5 mg/l |
| 28 Feb 2024, 14:22 | 10.9 | 10.9 mg/l |
| 25 Jan 2024, 09:40 | 11 | 11 mg/l |
| 1 Dec 2023, 11:27 | 11.9 | 11.9 mg/l |
| 21 Nov 2023, 12:32 | 9.8 | 9.8 mg/l |
| 16 Oct 2023, 10:51 | 10 | 10 mg/l |
Water temperature
code 0076 · °C
17.7 °C
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 17.7 | 17.7 °C |
| 2 Jul 2026, 12:32 | 21.8 | 21.8 °C |
| 2 Jun 2026, 12:33 | 16.5 | 16.5 °C |
| 21 May 2026, 12:52 | 12.6 | 12.6 °C |
| 22 Apr 2026, 12:19 | 10.2 | 10.2 °C |
| 3 Mar 2026, 12:20 | 8.3 | 8.3 °C |
| 11 Feb 2026, 11:31 | 8.3 | 8.3 °C |
| 17 Dec 2025, 13:58 | 7.3 | 7.3 °C |
| 11 Nov 2025, 10:30 | 10.4 | 10.4 °C |
| 9 Oct 2025, 11:53 | 12.4 | 12.4 °C |
| 4 Sep 2025, 11:02 | 14.9 | 14.9 °C |
| 15 Aug 2025, 11:27 | 18.4 | 18.4 °C |
| 7 Jul 2025, 11:38 | 16 | 16 °C |
| 12 Jun 2025, 10:01 | 14.9 | 14.9 °C |
| 9 May 2025, 13:46 | 12.3 | 12.3 °C |
| 23 Apr 2025, 09:49 | 10.6 | 10.6 °C |
| 17 Feb 2025, 12:25 | 4.2 | 4.2 °C |
| 29 Jan 2025, 11:10 | 5.8 | 5.8 °C |
| 24 Oct 2024, 10:08 | 10.7 | 10.7 °C |
| 23 Aug 2024, 10:07 | 15.3 | 15.3 °C |
| 22 Jul 2024, 11:10 | 16.7 | 16.7 °C |
| 28 Jun 2024, 10:47 | 14.8 | 14.8 °C |
| 22 May 2024, 10:14 | 14.3 | 14.3 °C |
| 22 Apr 2024, 09:03 | 9.8 | 9.8 °C |
| 19 Mar 2024, 09:54 | 10.1 | 10.1 °C |
| 28 Feb 2024, 14:22 | 7.4 | 7.4 °C |
| 25 Jan 2024, 09:40 | 6.7 | 6.7 °C |
| 1 Dec 2023, 11:27 | 3.7 | 3.7 °C |
| 21 Nov 2023, 12:32 | 9.7 | 9.7 °C |
| 16 Oct 2023, 10:51 | 9.6 | 9.6 °C |
pH
code 0061
8.12
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 8.12 | 8.12 |
| 2 Jul 2026, 12:32 | 8.22 | 8.22 |
| 2 Jun 2026, 12:33 | 7.85 | 7.85 |
| 21 May 2026, 12:52 | 7.92 | 7.92 |
| 22 Apr 2026, 12:19 | 7.98 | 7.98 |
| 3 Mar 2026, 12:20 | 7.61 | 7.61 |
| 11 Feb 2026, 11:31 | 7.65 | 7.65 |
| 17 Dec 2025, 13:58 | 7.92 | 7.92 |
| 11 Nov 2025, 10:30 | 7.74 | 7.74 |
| 9 Oct 2025, 11:53 | 8.01 | 8.01 |
| 4 Sep 2025, 11:02 | 7.83 | 7.83 |
| 15 Aug 2025, 11:27 | 7.73 | 7.73 |
| 7 Jul 2025, 11:38 | 7.75 | 7.75 |
| 12 Jun 2025, 10:01 | 7.63 | 7.63 |
| 9 May 2025, 13:46 | 7.9 | 7.9 |
| 23 Apr 2025, 09:49 | 7.98 | 7.98 |
| 17 Feb 2025, 12:25 | 7.92 | 7.92 |
| 29 Jan 2025, 11:10 | 7.77 | 7.77 |
| 24 Oct 2024, 10:08 | 7.83 | 7.83 |
| 23 Aug 2024, 10:07 | 7.7 | 7.7 |
| 22 Jul 2024, 11:10 | 7.98 | 7.98 |
| 28 Jun 2024, 10:47 | 7.97 | 7.97 |
| 22 May 2024, 10:14 | 7.62 | 7.62 |
| 22 Apr 2024, 09:03 | 8.07 | 8.07 |
| 19 Mar 2024, 09:54 | 7.91 | 7.91 |
| 28 Feb 2024, 14:22 | 7.88 | 7.88 |
| 25 Jan 2024, 09:40 | 7.9 | 7.9 |
| 1 Dec 2023, 11:27 | 8.1 | 8.1 |
| 21 Nov 2023, 12:32 | 7.8 | 7.8 |
| 16 Oct 2023, 10:51 | 7.97 | 7.97 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2026, 12:32 | 0.11 | 0.11 mg/l |
| 2 Jun 2026, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 May 2026, 12:52 | 0.035 | 0.035 mg/l |
| 22 Apr 2026, 12:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2026, 12:20 | 0.032 | 0.032 mg/l |
| 11 Feb 2026, 11:31 | 0.24 | 0.24 mg/l |
| 17 Dec 2025, 13:58 | 0.17 | 0.17 mg/l |
| 11 Nov 2025, 10:30 | 0.67 | 0.67 mg/l |
| 9 Oct 2025, 11:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 11:02 | 0.038 | 0.038 mg/l |
| 15 Aug 2025, 11:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jul 2025, 11:38 | 0.99 | 0.99 mg/l |
| 12 Jun 2025, 10:01 | 0.093 | 0.093 mg/l |
| 9 May 2025, 13:46 | 0.2 | 0.2 mg/l |
| 23 Apr 2025, 09:49 | 0.1 | 0.1 mg/l |
| 17 Feb 2025, 12:25 | 0.3 | 0.3 mg/l |
| 29 Jan 2025, 11:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Oct 2024, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Aug 2024, 10:07 | 0.039 | 0.039 mg/l |
| 22 Jul 2024, 11:10 | 0.05 | 0.05 mg/l |
| 28 Jun 2024, 10:47 | 0.046 | 0.046 mg/l |
| 22 May 2024, 10:14 | 0.13 | 0.13 mg/l |
| 22 Apr 2024, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Mar 2024, 09:54 | 0.22 | 0.22 mg/l |
| 28 Feb 2024, 14:22 | 0.39 | 0.39 mg/l |
| 1 Dec 2023, 11:27 | 0.22 | 0.22 mg/l |
| 21 Nov 2023, 12:32 | 0.19 | 0.19 mg/l |
| 16 Oct 2023, 10:51 | 0.034 | 0.034 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.99 mg/l
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 1.99 | 1.99 mg/l |
| 2 Jul 2026, 12:32 | 0.343 | 0.343 mg/l |
| 2 Jun 2026, 12:33 | 5.57 | 5.57 mg/l |
| 21 May 2026, 12:52 | 9.37 | 9.37 mg/l |
| 22 Apr 2026, 12:19 | 8.67 | 8.67 mg/l |
| 3 Mar 2026, 12:20 | 6.58 | 6.58 mg/l |
| 11 Feb 2026, 11:31 | 3.08 | 3.08 mg/l |
| 17 Dec 2025, 13:58 | 12 | 12 mg/l |
| 11 Nov 2025, 10:30 | 9.67 | 9.67 mg/l |
| 9 Oct 2025, 11:53 | 11 | 11 mg/l |
| 4 Sep 2025, 11:02 | 10.9 | 10.9 mg/l |
| 15 Aug 2025, 11:27 | 17 | 17 mg/l |
| 7 Jul 2025, 11:38 | 14.8 | 14.8 mg/l |
| 12 Jun 2025, 10:01 | 10.8 | 10.8 mg/l |
| 9 May 2025, 13:46 | 15.8 | 15.8 mg/l |
| 23 Apr 2025, 09:49 | 3.86 | 3.86 mg/l |
| 17 Feb 2025, 12:25 | 8.57 | 8.57 mg/l |
| 29 Jan 2025, 11:10 | 3.99 | 3.99 mg/l |
| 24 Oct 2024, 10:08 | 4.29 | 4.29 mg/l |
| 23 Aug 2024, 10:07 | 17 | 17 mg/l |
| 22 Jul 2024, 11:10 | 11 | 11 mg/l |
| 28 Jun 2024, 10:47 | 10.9 | 10.9 mg/l |
| 22 May 2024, 10:14 | 3.76 | 3.76 mg/l |
| 22 Apr 2024, 09:03 | 5.38 | 5.38 mg/l |
| 19 Mar 2024, 09:54 | 7.16 | 7.16 mg/l |
| 28 Feb 2024, 14:22 | 7.66 | 7.66 mg/l |
| 25 Jan 2024, 09:40 | 10.9 | 10.9 mg/l |
| 1 Dec 2023, 11:27 | 10.9 | 10.9 mg/l |
| 21 Nov 2023, 12:32 | 9.94 | 9.94 mg/l |
| 16 Oct 2023, 10:51 | 12 | 12 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 15 Sep 2026, 16 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 0.11 | 0.11 mg/l |
| 2 Jul 2026, 12:32 | 0.25 | 0.25 mg/l |
| 2 Jun 2026, 12:33 | 0.12 | 0.12 mg/l |
| 21 May 2026, 12:52 | 0.1 | 0.1 mg/l |
| 22 Apr 2026, 12:19 | 0.095 | 0.095 mg/l |
| 3 Mar 2026, 12:20 | 0.088 | 0.088 mg/l |
| 11 Feb 2026, 11:31 | 0.16 | 0.16 mg/l |
| 17 Dec 2025, 13:58 | 0.11 | 0.11 mg/l |
| 11 Nov 2025, 10:30 | 0.25 | 0.25 mg/l |
| 9 Oct 2025, 11:53 | 0.2 | 0.2 mg/l |
| 4 Sep 2025, 11:02 | 0.18 | 0.18 mg/l |
| 15 Aug 2025, 11:27 | 0.18 | 0.18 mg/l |
| 7 Jul 2025, 11:38 | 0.35 | 0.35 mg/l |
| 12 Jun 2025, 10:01 | 0.22 | 0.22 mg/l |
| 9 May 2025, 13:46 | 0.11 | 0.11 mg/l |
| 23 Apr 2025, 09:49 | 0.14 | 0.14 mg/l |
| 17 Feb 2025, 12:25 | 0.096 | 0.096 mg/l |
| 29 Jan 2025, 11:10 | 0.12 | 0.12 mg/l |
| 24 Oct 2024, 10:08 | 0.19 | 0.19 mg/l |
| 23 Aug 2024, 10:07 | 0.2 | 0.2 mg/l |
| 22 Jul 2024, 11:10 | 0.17 | 0.17 mg/l |
| 28 Jun 2024, 10:47 | 0.15 | 0.15 mg/l |
| 22 May 2024, 10:14 | 0.13 | 0.13 mg/l |
| 22 Apr 2024, 09:03 | 0.082 | 0.082 mg/l |
| 19 Mar 2024, 09:54 | 0.096 | 0.096 mg/l |
| 28 Feb 2024, 14:22 | 0.13 | 0.13 mg/l |
| 1 Dec 2023, 11:27 | 0.1 | 0.1 mg/l |
| 21 Nov 2023, 12:32 | 0.12 | 0.12 mg/l |
| 16 Oct 2023, 10:51 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
880 µS/cm
Sampled 15 Sep 2026, 16 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 13:47 | 880 | 880 µS/cm |
| 2 Jul 2026, 12:32 | 760 | 760 µS/cm |
| 2 Jun 2026, 12:33 | 722 | 722 µS/cm |
| 21 May 2026, 12:52 | 729 | 729 µS/cm |
| 22 Apr 2026, 12:19 | 867 | 867 µS/cm |
| 3 Mar 2026, 12:20 | 591 | 591 µS/cm |
| 11 Feb 2026, 11:31 | 385 | 385 µS/cm |
| 17 Dec 2025, 13:58 | 613 | 613 µS/cm |
| 11 Nov 2025, 10:30 | 810 | 810 µS/cm |
| 9 Oct 2025, 11:53 | 919 | 919 µS/cm |
| 4 Sep 2025, 11:02 | 834 | 834 µS/cm |
| 15 Aug 2025, 11:27 | 983 | 983 µS/cm |
| 7 Jul 2025, 11:38 | 849 | 849 µS/cm |
| 12 Jun 2025, 10:01 | 966 | 966 µS/cm |
| 9 May 2025, 13:46 | 1005 | 1005 µS/cm |
| 23 Apr 2025, 09:49 | 720 | 720 µS/cm |
| 17 Feb 2025, 12:25 | 732 | 732 µS/cm |
| 29 Jan 2025, 11:10 | 525 | 525 µS/cm |
| 24 Oct 2024, 10:08 | 638 | 638 µS/cm |
| 23 Aug 2024, 10:07 | 1004 | 1004 µS/cm |
| 22 Jul 2024, 11:10 | 901 | 901 µS/cm |
| 28 Jun 2024, 10:47 | 974 | 974 µS/cm |
| 22 May 2024, 10:14 | 471 | 471 µS/cm |
| 22 Apr 2024, 09:03 | 757 | 757 µS/cm |
| 19 Mar 2024, 09:54 | 694 | 694 µS/cm |
| 28 Feb 2024, 14:22 | 748 | 748 µS/cm |
| 25 Jan 2024, 09:40 | 844 | 844 µS/cm |
| 1 Dec 2023, 11:27 | 826 | 826 µS/cm |
| 21 Nov 2023, 12:32 | 765 | 765 µS/cm |
| 16 Oct 2023, 10:51 | 842 | 842 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 | 30 | Oct 2023 – Sep 2026 | 166.2% 15 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – Sep 2026 | 15.8 mg/l 15 Sep 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – Sep 2026 | 17.7 °C 15 Sep 2026 |
| pH 0061 | River water | 30 | Oct 2023 – Sep 2026 | 8.12 15 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Sep 2026 | below 0.03 mg/l 15 Sep 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – Sep 2026 | 1.99 mg/l 15 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Oct 2023 – Sep 2026 | 0.11 mg/l 15 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – Sep 2026 | 880 µS/cm 15 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – Sep 2026 | 230 mg/l 15 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Sep 2026 | below 0.00096 mg/l 15 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Oct 2023 – Feb 2025 | 2.3 mg/l 17 Feb 2025 |
| Chemical Oxygen Demand :- {COD} 0092 | River water | 11 | Oct 2023 – Feb 2025 | 19 mg/l 17 Feb 2025 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Sep 2026 | 0.014 mg/l 15 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – Sep 2026 | 2 mg/l 15 Sep 2026 |
| No flow /No sample 7668 | River water | 1 | Aug 2026 – Aug 2026 | No flow/discharge at sampling point 17 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 12 | Oct 2023 – Feb 2025 | 33 mg/l 17 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.