River Chelmer Langleys Bridge
EA name: R.CHELMER LANGLEYS BRIDGE
Environment Agency sampling point AN-CH0860 · 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, 12:2624 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 29 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 (national agency policy)
- Where
- National Grid 563732, 220886As published, to the nearest 1 m. Open in a map
- River, by its own name
- Chelmer
- River, by the map
- River ChelmerPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Felsted On the River Chelmer · 5.4 km along the river
- Nearest gauge upstream
- Churchend On the River Chelmer · 3.3 km along the river
- Why it was sampled
- Planned investigation (national agency policy) (22 samples)
Planned investigation (local monitoring) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
51%
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 51 | 51% |
| 12 Aug 2026, 13:06 | 61.7 | 61.7% |
| 9 Jul 2026, 10:32 | 42.4 | 42.4% |
| 9 Jun 2026, 11:25 | 67.5 | 67.5% |
| 11 May 2026, 11:34 | 76.3 | 76.3% |
| 8 Apr 2026, 12:27 | 102.8 | 102.8% |
| 9 Mar 2026, 10:33 | 91.8 | 91.8% |
| 10 Feb 2026, 11:24 | 90 | 90% |
| 7 Jan 2026, 13:40 | 89.5 | 89.5% |
| 17 Dec 2025, 10:11 | 87.5 | 87.5% |
| 18 Nov 2025, 13:06 | 79.6 | 79.6% |
| 9 Oct 2025, 12:53 | 64 | 64% |
| 9 Apr 2025, 10:55 | 91.4 | 91.4% |
| 6 Mar 2025, 11:41 | 99 | 99% |
| 12 Feb 2025, 10:35 | 95.7 | 95.7% |
| 3 Jan 2025, 11:47 | 94.9 | 94.9% |
| 2 Dec 2024, 13:12 | 87.6 | 87.6% |
| 11 Nov 2024, 11:57 | 81.1 | 81.1% |
| 7 Oct 2024, 12:35 | 87 | 87% |
| 13 Sep 2024, 11:26 | 78.6 | 78.6% |
| 5 Aug 2024, 11:35 | 92.6 | 92.6% |
| 3 Jul 2024, 09:51 | 74.1 | 74.1% |
| 11 Jun 2024, 10:00 | 89.8 | 89.8% |
| 8 Mar 2024, 11:07 | 97.6 | 97.6% |
| 1 Feb 2024, 13:57 | 94.1 | 94.1% |
| 11 Jan 2024, 12:15 | 93.2 | 93.2% |
| 1 Dec 2023, 10:57 | 91 | 91% |
| 15 Nov 2023, 10:01 | 90.1 | 90.1% |
| 16 Oct 2023, 14:08 | 83 | 83% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.8 mg/l
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 4.8 | 4.8 mg/l |
| 12 Aug 2026, 13:06 | 5.52 | 5.52 mg/l |
| 9 Jul 2026, 10:32 | 3.8 | 3.8 mg/l |
| 9 Jun 2026, 11:25 | 6.79 | 6.79 mg/l |
| 11 May 2026, 11:34 | 8.5 | 8.5 mg/l |
| 8 Apr 2026, 12:27 | 11.1 | 11.1 mg/l |
| 9 Mar 2026, 10:33 | 10.5 | 10.5 mg/l |
| 10 Feb 2026, 11:24 | 10.6 | 10.6 mg/l |
| 7 Jan 2026, 13:40 | 12.1 | 12.1 mg/l |
| 17 Dec 2025, 10:11 | 10.8 | 10.8 mg/l |
| 18 Nov 2025, 13:06 | 9.48 | 9.48 mg/l |
| 9 Oct 2025, 12:53 | 6.59 | 6.59 mg/l |
| 9 Apr 2025, 10:55 | 10.9 | 10.9 mg/l |
| 6 Mar 2025, 11:41 | 12.2 | 12.2 mg/l |
| 12 Feb 2025, 10:35 | 12.1 | 12.1 mg/l |
| 3 Jan 2025, 11:47 | 12.1 | 12.1 mg/l |
| 2 Dec 2024, 13:12 | 9.96 | 9.96 mg/l |
| 11 Nov 2024, 11:57 | 9.05 | 9.05 mg/l |
| 7 Oct 2024, 12:35 | 9.14 | 9.14 mg/l |
| 13 Sep 2024, 11:26 | 8.32 | 8.32 mg/l |
| 5 Aug 2024, 11:35 | 8.78 | 8.78 mg/l |
| 3 Jul 2024, 09:51 | 7.44 | 7.44 mg/l |
| 11 Jun 2024, 10:00 | 9.61 | 9.61 mg/l |
| 8 Mar 2024, 11:07 | 11.6 | 11.6 mg/l |
| 1 Feb 2024, 13:57 | 11.1 | 11.1 mg/l |
| 11 Jan 2024, 12:15 | 12.3 | 12.3 mg/l |
| 1 Dec 2023, 10:57 | 11.6 | 11.6 mg/l |
| 15 Nov 2023, 10:01 | 10.4 | 10.4 mg/l |
| 16 Oct 2023, 14:08 | 9.18 | 9.18 mg/l |
Water temperature
code 0076 · °C
18.2 °C
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 18.2 | 18.2 °C |
| 12 Aug 2026, 13:06 | 20.7 | 20.7 °C |
| 9 Jul 2026, 10:32 | 20.6 | 20.6 °C |
| 9 Jun 2026, 11:25 | 15 | 15 °C |
| 11 May 2026, 11:34 | 10.5 | 10.5 °C |
| 8 Apr 2026, 12:27 | 12 | 12 °C |
| 9 Mar 2026, 10:33 | 9.2 | 9.2 °C |
| 10 Feb 2026, 11:24 | 8 | 8 °C |
| 7 Jan 2026, 13:40 | 2.9 | 2.9 °C |
| 17 Dec 2025, 10:11 | 6.4 | 6.4 °C |
| 18 Nov 2025, 13:06 | 7.7 | 7.7 °C |
| 9 Oct 2025, 12:53 | 13.9 | 13.9 °C |
| 9 Apr 2025, 10:55 | 7.5 | 7.5 °C |
| 6 Mar 2025, 11:41 | 6.4 | 6.4 °C |
| 12 Feb 2025, 10:35 | 5.2 | 5.2 °C |
| 3 Jan 2025, 11:47 | 4.9 | 4.9 °C |
| 2 Dec 2024, 13:12 | 9.6 | 9.6 °C |
| 11 Nov 2024, 11:57 | 10.4 | 10.4 °C |
| 7 Oct 2024, 12:35 | 13 | 13 °C |
| 13 Sep 2024, 11:26 | 12.7 | 12.7 °C |
| 5 Aug 2024, 11:35 | 17.8 | 17.8 °C |
| 3 Jul 2024, 09:51 | 15.1 | 15.1 °C |
| 11 Jun 2024, 10:00 | 12.2 | 12.2 °C |
| 8 Mar 2024, 11:07 | 7.9 | 7.9 °C |
| 1 Feb 2024, 13:57 | 8.1 | 8.1 °C |
| 11 Jan 2024, 12:15 | 3.6 | 3.6 °C |
| 1 Dec 2023, 10:57 | 5.1 | 5.1 °C |
| 15 Nov 2023, 10:01 | 8.9 | 8.9 °C |
| 16 Oct 2023, 14:08 | 10.8 | 10.8 °C |
pH
code 0061
7.61
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 7.61 | 7.61 |
| 12 Aug 2026, 13:06 | 7.65 | 7.65 |
| 9 Jul 2026, 10:32 | 7.89 | 7.89 |
| 9 Jun 2026, 11:25 | 7.77 | 7.77 |
| 11 May 2026, 11:34 | 7.83 | 7.83 |
| 8 Apr 2026, 12:27 | 7.83 | 7.83 |
| 9 Mar 2026, 10:33 | 7.83 | 7.83 |
| 10 Feb 2026, 11:24 | 7.96 | 7.96 |
| 7 Jan 2026, 13:40 | 8.04 | 8.04 |
| 17 Dec 2025, 10:11 | 7.96 | 7.96 |
| 18 Nov 2025, 13:06 | 7.87 | 7.87 |
| 9 Oct 2025, 12:53 | 7.68 | 7.68 |
| 9 Apr 2025, 10:55 | 8.22 | 8.22 |
| 6 Mar 2025, 11:41 | 8.07 | 8.07 |
| 12 Feb 2025, 10:35 | 7.97 | 7.97 |
| 3 Jan 2025, 11:47 | 7.99 | 7.99 |
| 2 Dec 2024, 13:12 | 7.83 | 7.83 |
| 11 Nov 2024, 11:57 | 7.75 | 7.75 |
| 7 Oct 2024, 12:35 | 7.86 | 7.86 |
| 13 Sep 2024, 11:26 | 7.86 | 7.86 |
| 5 Aug 2024, 11:35 | 6.72 | 6.72 |
| 3 Jul 2024, 09:51 | 7.76 | 7.76 |
| 11 Jun 2024, 10:00 | 8.04 | 8.04 |
| 8 Mar 2024, 11:07 | 8.18 | 8.18 |
| 1 Feb 2024, 13:57 | 7.98 | 7.98 |
| 11 Jan 2024, 12:15 | 8.11 | 8.11 |
| 1 Dec 2023, 10:57 | 7.85 | 7.85 |
| 15 Nov 2023, 10:01 | 7.81 | 7.81 |
| 16 Oct 2023, 14:08 | 7.82 | 7.82 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.05 mg/l
Sampled 7 Sep 2026, 24 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 0.05 | 0.05 mg/l |
| 12 Aug 2026, 13:06 | 0.06 | 0.06 mg/l |
| 9 Jul 2026, 10:32 | 0.13 | 0.13 mg/l |
| 9 Jun 2026, 11:25 | 0.077 | 0.077 mg/l |
| 11 May 2026, 11:34 | 0.064 | 0.064 mg/l |
| 8 Apr 2026, 12:27 | 0.038 | 0.038 mg/l |
| 9 Mar 2026, 10:33 | 0.07 | 0.07 mg/l |
| 10 Feb 2026, 11:24 | 0.079 | 0.079 mg/l |
| 7 Jan 2026, 13:40 | 0.41 | 0.41 mg/l |
| 17 Dec 2025, 10:11 | 0.035 | 0.035 mg/l |
| 18 Nov 2025, 13:06 | 0.052 | 0.052 mg/l |
| 9 Oct 2025, 12:53 | 0.051 | 0.051 mg/l |
| 9 Apr 2025, 10:55 | 0.044 | 0.044 mg/l |
| 6 Mar 2025, 11:41 | 0.1 | 0.1 mg/l |
| 12 Feb 2025, 10:35 | 0.038 | 0.038 mg/l |
| 3 Jan 2025, 11:47 | 0.065 | 0.065 mg/l |
| 2 Dec 2024, 13:12 | 0.12 | 0.12 mg/l |
| 11 Nov 2024, 11:57 | 0.049 | 0.049 mg/l |
| 7 Oct 2024, 12:35 | 0.035 | 0.035 mg/l |
| 13 Sep 2024, 11:26 | 0.048 | 0.048 mg/l |
| 5 Aug 2024, 11:35 | 0.091 | 0.091 mg/l |
| 3 Jul 2024, 09:51 | 0.095 | 0.095 mg/l |
| 11 Jun 2024, 10:00 | 0.084 | 0.084 mg/l |
| 8 Mar 2024, 11:07 | 0.11 | 0.11 mg/l |
| 11 Jan 2024, 12:15 | 0.14 | 0.14 mg/l |
| 1 Dec 2023, 10:57 | 0.27 | 0.27 mg/l |
| 15 Nov 2023, 10:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2023, 14:08 | 0.051 | 0.051 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.36 mg/l
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 5.36 | 5.36 mg/l |
| 12 Aug 2026, 13:06 | 4.15 | 4.15 mg/l |
| 9 Jul 2026, 10:32 | 5.41 | 5.41 mg/l |
| 9 Jun 2026, 11:25 | 5.96 | 5.96 mg/l |
| 11 May 2026, 11:34 | 7.76 | 7.76 mg/l |
| 8 Apr 2026, 12:27 | 6.66 | 6.66 mg/l |
| 9 Mar 2026, 10:33 | 8.82 | 8.82 mg/l |
| 10 Feb 2026, 11:24 | 12 | 12 mg/l |
| 7 Jan 2026, 13:40 | 8.42 | 8.42 mg/l |
| 17 Dec 2025, 10:11 | 9.47 | 9.47 mg/l |
| 18 Nov 2025, 13:06 | 13 | 13 mg/l |
| 9 Oct 2025, 12:53 | 6.75 | 6.75 mg/l |
| 9 Apr 2025, 10:55 | 9.06 | 9.06 mg/l |
| 6 Mar 2025, 11:41 | 9.75 | 9.75 mg/l |
| 12 Feb 2025, 10:35 | 12 | 12 mg/l |
| 3 Jan 2025, 11:47 | 9.94 | 9.94 mg/l |
| 2 Dec 2024, 13:12 | 9.22 | 9.22 mg/l |
| 11 Nov 2024, 11:57 | 6.96 | 6.96 mg/l |
| 7 Oct 2024, 12:35 | 7.77 | 7.77 mg/l |
| 13 Sep 2024, 11:26 | 6.36 | 6.36 mg/l |
| 5 Aug 2024, 11:35 | 5.53 | 5.53 mg/l |
| 3 Jul 2024, 09:51 | 6.73 | 6.73 mg/l |
| 11 Jun 2024, 10:00 | 8.24 | 8.24 mg/l |
| 8 Mar 2024, 11:07 | 7.56 | 7.56 mg/l |
| 1 Feb 2024, 13:57 | 8.73 | 8.73 mg/l |
| 11 Jan 2024, 12:15 | 8.76 | 8.76 mg/l |
| 1 Dec 2023, 10:57 | 9.12 | 9.12 mg/l |
| 15 Nov 2023, 10:01 | 9.98 | 9.98 mg/l |
| 16 Oct 2023, 14:08 | 9.27 | 9.27 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
2.1 mg/l
Sampled 7 Sep 2026, 24 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 2.1 | 2.1 mg/l |
| 9 Jul 2026, 10:32 | 0.9 | 0.9 mg/l |
| 9 Jun 2026, 11:25 | 0.96 | 0.96 mg/l |
| 11 May 2026, 11:34 | 0.46 | 0.46 mg/l |
| 8 Apr 2026, 12:27 | 0.52 | 0.52 mg/l |
| 9 Mar 2026, 10:33 | 0.15 | 0.15 mg/l |
| 10 Feb 2026, 11:24 | 0.16 | 0.16 mg/l |
| 7 Jan 2026, 13:40 | 0.29 | 0.29 mg/l |
| 17 Dec 2025, 10:11 | 0.25 | 0.25 mg/l |
| 18 Nov 2025, 13:06 | 0.23 | 0.23 mg/l |
| 9 Oct 2025, 12:53 | 0.65 | 0.65 mg/l |
| 9 Apr 2025, 10:55 | 0.27 | 0.27 mg/l |
| 6 Mar 2025, 11:41 | 0.18 | 0.18 mg/l |
| 12 Feb 2025, 10:35 | 0.11 | 0.11 mg/l |
| 3 Jan 2025, 11:47 | 0.14 | 0.14 mg/l |
| 2 Dec 2024, 13:12 | 0.19 | 0.19 mg/l |
| 11 Nov 2024, 11:57 | 0.42 | 0.42 mg/l |
| 7 Oct 2024, 12:35 | 0.21 | 0.21 mg/l |
| 13 Sep 2024, 11:26 | 0.46 | 0.46 mg/l |
| 5 Aug 2024, 11:35 | 0.31 | 0.31 mg/l |
| 3 Jul 2024, 09:51 | 0.56 | 0.56 mg/l |
| 11 Jun 2024, 10:00 | 0.3 | 0.3 mg/l |
| 8 Mar 2024, 11:07 | 0.11 | 0.11 mg/l |
| 1 Feb 2024, 13:57 | 0.42 | 0.42 mg/l |
| 11 Jan 2024, 12:15 | 0.13 | 0.13 mg/l |
| 1 Dec 2023, 10:57 | 0.12 | 0.12 mg/l |
| 15 Nov 2023, 10:01 | 0.11 | 0.11 mg/l |
| 16 Oct 2023, 14:08 | 0.3 | 0.3 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
997 µS/cm
Sampled 7 Sep 2026, 24 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 997 | 997 µS/cm |
| 12 Aug 2026, 13:06 | 1059 | 1059 µS/cm |
| 9 Jul 2026, 10:32 | 977 | 977 µS/cm |
| 9 Jun 2026, 11:25 | 880 | 880 µS/cm |
| 11 May 2026, 11:34 | 900 | 900 µS/cm |
| 8 Apr 2026, 12:27 | 944 | 944 µS/cm |
| 9 Mar 2026, 10:33 | 857 | 857 µS/cm |
| 10 Feb 2026, 11:24 | 716 | 716 µS/cm |
| 7 Jan 2026, 13:40 | 1225 | 1225 µS/cm |
| 17 Dec 2025, 10:11 | 864 | 864 µS/cm |
| 18 Nov 2025, 13:06 | 881 | 881 µS/cm |
| 9 Oct 2025, 12:53 | 941 | 941 µS/cm |
| 9 Apr 2025, 10:55 | 824 | 824 µS/cm |
| 6 Mar 2025, 11:41 | 821 | 821 µS/cm |
| 12 Feb 2025, 10:35 | 725 | 725 µS/cm |
| 3 Jan 2025, 11:47 | 785 | 785 µS/cm |
| 2 Dec 2024, 13:12 | 833 | 833 µS/cm |
| 11 Nov 2024, 11:57 | 935 | 935 µS/cm |
| 7 Oct 2024, 12:35 | 782 | 782 µS/cm |
| 13 Sep 2024, 11:26 | 895 | 895 µS/cm |
| 5 Aug 2024, 11:35 | 911 | 911 µS/cm |
| 3 Jul 2024, 09:51 | 844 | 844 µS/cm |
| 11 Jun 2024, 10:00 | 830 | 830 µS/cm |
| 8 Mar 2024, 11:07 | 742 | 742 µS/cm |
| 1 Feb 2024, 13:57 | 886 | 886 µS/cm |
| 11 Jan 2024, 12:15 | 778 | 778 µS/cm |
| 1 Dec 2023, 10:57 | 836 | 836 µS/cm |
| 15 Nov 2023, 10:01 | 632 | 632 µS/cm |
| 16 Oct 2023, 14:08 | 801 | 801 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 | 29 | Oct 2023 – Sep 2026 | 51% 7 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 29 | Oct 2023 – Sep 2026 | 4.8 mg/l 7 Sep 2026 |
| Temperature of Water 0076 | River water | 29 | Oct 2023 – Sep 2026 | 18.2 °C 7 Sep 2026 |
| pH 0061 | River water | 29 | Oct 2023 – Sep 2026 | 7.61 7 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Oct 2023 – Sep 2026 | 0.05 mg/l 7 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Sep 2026 | 5.36 mg/l 7 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Oct 2023 – Sep 2026 | 2.1 mg/l 7 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 29 | Oct 2023 – Sep 2026 | 997 µS/cm 7 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Sep 2026 | 290 mg/l 7 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Oct 2023 – Sep 2026 | 0.00069 mg/l 7 Sep 2026 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Sep 2026 | 0.044 mg/l 7 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Sep 2026 | 5.4 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.