River Chelmer Little Baddow Mill
EA name: R.CHELMER LT.BADDOW MILL
Environment Agency sampling point AN-CH03 · 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
- 26 Mar 2026, 14:556 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 5 Oct 2023 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 575991, 208320As 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, 44 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- SPRINGFIELD FGS AND RAINGAUGE 8.4 km along the riverSpringfield On the River Chelmer · 8.4 km along the riverBEACHES MILL FGS GSM 10 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (18 samples)
Environmental monitoring statutory (EU directives) (7 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
113.6%
Sampled 26 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 113.6 | 113.6% |
| 3 Feb 2026, 12:02 | 101.1 | 101.1% |
| 2 Jan 2026, 11:59 | 96.3 | 96.3% |
| 9 Dec 2025, 14:45 | 97.4 | 97.4% |
| 25 Nov 2025, 09:57 | 96.3 | 96.3% |
| 9 Oct 2025, 14:36 | 86.3 | 86.3% |
| 3 Apr 2025, 09:25 | 97.6 | 97.6% |
| 3 Mar 2025, 12:41 | 103.6 | 103.6% |
| 5 Feb 2025, 09:15 | 99.5 | 99.5% |
| 10 Jan 2025, 12:44 | 99.1 | 99.1% |
| 2 Dec 2024, 11:57 | 96.4 | 96.4% |
| 1 Nov 2024, 13:15 | 82.6 | 82.6% |
| 3 Oct 2024, 11:42 | 96 | 96% |
| 9 Sep 2024, 12:40 | 95.3 | 95.3% |
| 2 Aug 2024, 10:00 | 101.3 | 101.3% |
| 5 Jul 2024, 13:43 | 91.9 | 91.9% |
| 14 Jun 2024, 11:44 | 99.6 | 99.6% |
| 1 Mar 2024, 12:06 | 99.8 | 99.8% |
| 1 Feb 2024, 08:41 | 96.3 | 96.3% |
| 12 Jan 2024, 11:52 | 99.1 | 99.1% |
| 1 Dec 2023, 11:37 | 95.6 | 95.6% |
| 9 Nov 2023, 13:54 | 98 | 98% |
| 5 Oct 2023, 09:38 | 90.1 | 90.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.9 mg/l
Sampled 26 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 12.9 | 12.9 mg/l |
| 3 Feb 2026, 12:02 | 12.3 | 12.3 mg/l |
| 2 Jan 2026, 11:59 | 12.9 | 12.9 mg/l |
| 9 Dec 2025, 14:45 | 11 | 11 mg/l |
| 25 Nov 2025, 09:57 | 12 | 12 mg/l |
| 9 Oct 2025, 14:36 | 8.99 | 8.99 mg/l |
| 3 Apr 2025, 09:25 | 10.8 | 10.8 mg/l |
| 3 Mar 2025, 12:41 | 12.9 | 12.9 mg/l |
| 5 Feb 2025, 09:15 | 12.8 | 12.8 mg/l |
| 10 Jan 2025, 12:44 | 13 | 13 mg/l |
| 2 Dec 2024, 11:57 | 11.2 | 11.2 mg/l |
| 1 Nov 2024, 13:15 | 8.96 | 8.96 mg/l |
| 3 Oct 2024, 11:42 | 10 | 10 mg/l |
| 9 Sep 2024, 12:40 | 9.09 | 9.09 mg/l |
| 2 Aug 2024, 10:00 | 9.08 | 9.08 mg/l |
| 5 Jul 2024, 13:43 | 9.18 | 9.18 mg/l |
| 14 Jun 2024, 11:44 | 10 | 10 mg/l |
| 1 Mar 2024, 12:06 | 11.8 | 11.8 mg/l |
| 1 Feb 2024, 08:41 | 11.6 | 11.6 mg/l |
| 12 Jan 2024, 11:52 | 12.7 | 12.7 mg/l |
| 1 Dec 2023, 11:37 | 12.4 | 12.4 mg/l |
| 9 Nov 2023, 13:54 | 11.1 | 11.1 mg/l |
| 5 Oct 2023, 09:38 | 9.1 | 9.1 mg/l |
Water temperature
code 0076 · °C
9.7 °C
Sampled 26 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 9.7 | 9.7 °C |
| 3 Feb 2026, 12:02 | 6.8 | 6.8 °C |
| 2 Jan 2026, 11:59 | 3.2 | 3.2 °C |
| 9 Dec 2025, 14:45 | 9.9 | 9.9 °C |
| 25 Nov 2025, 09:57 | 6 | 6 °C |
| 9 Oct 2025, 14:36 | 13.4 | 13.4 °C |
| 3 Apr 2025, 09:25 | 10.9 | 10.9 °C |
| 3 Mar 2025, 12:41 | 6 | 6 °C |
| 5 Feb 2025, 09:15 | 4.8 | 4.8 °C |
| 10 Jan 2025, 12:44 | 3.8 | 3.8 °C |
| 2 Dec 2024, 11:57 | 8.7 | 8.7 °C |
| 1 Nov 2024, 13:15 | 11.6 | 11.6 °C |
| 3 Oct 2024, 11:42 | 13.2 | 13.2 °C |
| 9 Sep 2024, 12:40 | 17.5 | 17.5 °C |
| 2 Aug 2024, 10:00 | 20.6 | 20.6 °C |
| 5 Jul 2024, 13:43 | 15.3 | 15.3 °C |
| 14 Jun 2024, 11:44 | 15 | 15 °C |
| 1 Mar 2024, 12:06 | 8.1 | 8.1 °C |
| 1 Feb 2024, 08:41 | 7.2 | 7.2 °C |
| 12 Jan 2024, 11:52 | 4.9 | 4.9 °C |
| 1 Dec 2023, 11:37 | 4.4 | 4.4 °C |
| 9 Nov 2023, 13:54 | 9.9 | 9.9 °C |
| 5 Oct 2023, 09:38 | 14.8 | 14.8 °C |
pH
code 0061
8.45
Sampled 26 Mar 2026, 6 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 8.45 | 8.45 |
| 3 Feb 2026, 12:02 | 8.21 | 8.21 |
| 2 Jan 2026, 11:59 | 8.22 | 8.22 |
| 9 Dec 2025, 14:45 | 8.25 | 8.25 |
| 25 Nov 2025, 09:57 | 7.95 | 7.95 |
| 9 Oct 2025, 14:36 | 7.88 | 7.88 |
| 3 Mar 2025, 12:41 | 8.17 | 8.17 |
| 5 Feb 2025, 09:15 | 8.3 | 8.3 |
| 10 Jan 2025, 12:44 | 8.09 | 8.09 |
| 2 Dec 2024, 11:57 | 8 | 8 |
| 1 Nov 2024, 13:15 | 7.75 | 7.75 |
| 3 Oct 2024, 11:42 | 8.09 | 8.09 |
| 9 Sep 2024, 12:40 | 8.08 | 8.08 |
| 2 Aug 2024, 10:00 | 7.34 | 7.34 |
| 5 Jul 2024, 13:43 | 7.91 | 7.91 |
| 14 Jun 2024, 11:44 | 8.28 | 8.28 |
| 1 Mar 2024, 12:06 | 8.18 | 8.18 |
| 1 Feb 2024, 08:41 | 8.31 | 8.31 |
| 12 Jan 2024, 11:52 | 8.15 | 8.15 |
| 1 Dec 2023, 11:37 | 8.05 | 8.05 |
| 9 Nov 2023, 13:54 | 7.99 | 7.99 |
| 5 Oct 2023, 09:38 | 7.99 | 7.99 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 26 Mar 2026, 6 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Feb 2026, 12:02 | 0.046 | 0.046 mg/l |
| 2 Jan 2026, 11:59 | 0.098 | 0.098 mg/l |
| 9 Dec 2025, 14:45 | 0.04 | 0.04 mg/l |
| 25 Nov 2025, 09:57 | 0.053 | 0.053 mg/l |
| 9 Oct 2025, 14:36 | 0.072 | 0.072 mg/l |
| 3 Mar 2025, 12:41 | 0.03 | 0.03 mg/l |
| 5 Feb 2025, 09:15 | 0.057 | 0.057 mg/l |
| 10 Jan 2025, 12:44 | 0.071 | 0.071 mg/l |
| 2 Dec 2024, 11:57 | 0.053 | 0.053 mg/l |
| 1 Nov 2024, 13:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Oct 2024, 11:42 | 0.051 | 0.051 mg/l |
| 9 Sep 2024, 12:40 | 0.035 | 0.035 mg/l |
| 2 Aug 2024, 10:00 | 0.031 | 0.031 mg/l |
| 5 Jul 2024, 13:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jun 2024, 11:44 | 0.04 | 0.04 mg/l |
| 1 Mar 2024, 12:06 | 0.078 | 0.078 mg/l |
| 1 Feb 2024, 08:41 | 0.051 | 0.051 mg/l |
| 12 Jan 2024, 11:52 | 0.088 | 0.088 mg/l |
| 1 Dec 2023, 11:37 | 0.037 | 0.037 mg/l |
| 9 Nov 2023, 13:54 | 0.037 | 0.037 mg/l |
| 5 Oct 2023, 09:38 | 0.036 | 0.036 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.28 mg/l
Sampled 26 Mar 2026, 6 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 9.28 | 9.28 mg/l |
| 3 Feb 2026, 12:02 | 14 | 14 mg/l |
| 2 Jan 2026, 11:59 | 10.9 | 10.9 mg/l |
| 9 Dec 2025, 14:45 | 13 | 13 mg/l |
| 25 Nov 2025, 09:57 | 8.67 | 8.67 mg/l |
| 9 Oct 2025, 14:36 | 9.14 | 9.14 mg/l |
| 3 Mar 2025, 12:41 | 11 | 11 mg/l |
| 5 Feb 2025, 09:15 | 11 | 11 mg/l |
| 10 Jan 2025, 12:44 | 12 | 12 mg/l |
| 2 Dec 2024, 11:57 | 12 | 12 mg/l |
| 1 Nov 2024, 13:15 | 2.9 | 2.9 mg/l |
| 3 Oct 2024, 11:42 | 8.84 | 8.84 mg/l |
| 9 Sep 2024, 12:40 | 6.46 | 6.46 mg/l |
| 2 Aug 2024, 10:00 | 5.07 | 5.07 mg/l |
| 5 Jul 2024, 13:43 | 2.89 | 2.89 mg/l |
| 14 Jun 2024, 11:44 | 7.17 | 7.17 mg/l |
| 1 Mar 2024, 12:06 | 5.76 | 5.76 mg/l |
| 1 Feb 2024, 08:41 | 8.75 | 8.75 mg/l |
| 12 Jan 2024, 11:52 | 9.07 | 9.07 mg/l |
| 1 Dec 2023, 11:37 | 11 | 11 mg/l |
| 9 Nov 2023, 13:54 | 9.96 | 9.96 mg/l |
| 5 Oct 2023, 09:38 | 4.87 | 4.87 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 26 Mar 2026, 6 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 0.15 | 0.15 mg/l |
| 3 Feb 2026, 12:02 | 0.17 | 0.17 mg/l |
| 2 Jan 2026, 11:59 | 0.31 | 0.31 mg/l |
| 9 Dec 2025, 14:45 | 0.27 | 0.27 mg/l |
| 25 Nov 2025, 09:57 | 0.53 | 0.53 mg/l |
| 9 Oct 2025, 14:36 | 0.57 | 0.57 mg/l |
| 3 Mar 2025, 12:41 | 0.12 | 0.12 mg/l |
| 5 Feb 2025, 09:15 | 0.18 | 0.18 mg/l |
| 10 Jan 2025, 12:44 | 0.16 | 0.16 mg/l |
| 2 Dec 2024, 11:57 | 0.17 | 0.17 mg/l |
| 1 Nov 2024, 13:15 | 0.23 | 0.23 mg/l |
| 3 Oct 2024, 11:42 | 0.36 | 0.36 mg/l |
| 9 Sep 2024, 12:40 | 0.48 | 0.48 mg/l |
| 2 Aug 2024, 10:00 | 0.34 | 0.34 mg/l |
| 5 Jul 2024, 13:43 | 0.2 | 0.2 mg/l |
| 14 Jun 2024, 11:44 | 0.3 | 0.3 mg/l |
| 1 Mar 2024, 12:06 | 0.15 | 0.15 mg/l |
| 1 Feb 2024, 08:41 | 0.2 | 0.2 mg/l |
| 12 Jan 2024, 11:52 | 0.17 | 0.17 mg/l |
| 1 Dec 2023, 11:37 | 0.16 | 0.16 mg/l |
| 9 Nov 2023, 13:54 | 0.17 | 0.17 mg/l |
| 5 Oct 2023, 09:38 | 0.44 | 0.44 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
861 µS/cm
Sampled 26 Mar 2026, 6 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 26 Mar 2026, 14:55 | 861 | 861 µS/cm |
| 3 Feb 2026, 12:02 | 756 | 756 µS/cm |
| 2 Jan 2026, 11:59 | 900 | 900 µS/cm |
| 9 Dec 2025, 14:45 | 836 | 836 µS/cm |
| 25 Nov 2025, 09:57 | 870 | 870 µS/cm |
| 9 Oct 2025, 14:36 | 879 | 879 µS/cm |
| 3 Apr 2025, 09:25 | 896 | 896 µS/cm |
| 3 Mar 2025, 12:41 | 814 | 814 µS/cm |
| 5 Feb 2025, 09:15 | 789 | 789 µS/cm |
| 10 Jan 2025, 12:44 | 769 | 769 µS/cm |
| 2 Dec 2024, 11:57 | 806 | 806 µS/cm |
| 1 Nov 2024, 13:15 | 704 | 704 µS/cm |
| 3 Oct 2024, 11:42 | 673 | 673 µS/cm |
| 9 Sep 2024, 12:40 | 890 | 890 µS/cm |
| 2 Aug 2024, 10:00 | 858 | 858 µS/cm |
| 5 Jul 2024, 13:43 | 766 | 766 µS/cm |
| 14 Jun 2024, 11:44 | 884 | 884 µS/cm |
| 1 Mar 2024, 12:06 | 677 | 677 µS/cm |
| 1 Feb 2024, 08:41 | 865 | 865 µS/cm |
| 12 Jan 2024, 11:52 | 801 | 801 µS/cm |
| 1 Dec 2023, 11:37 | 772 | 772 µS/cm |
| 9 Nov 2023, 13:54 | 767 | 767 µS/cm |
| 5 Oct 2023, 09:38 | 864 | 864 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
320 per 100 ml
Sampled 3 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Mar 2025, 12:41 | 320 | 320 per 100 ml |
| 5 Feb 2025, 09:15 | 910 | 910 per 100 ml |
| 10 Jan 2025, 12:44 | 2100 | 2100 per 100 ml |
| 2 Dec 2024, 11:57 | 770 | 770 per 100 ml |
| 1 Nov 2024, 13:15 | 370 | 370 per 100 ml |
| 3 Oct 2024, 11:42 | 1400 | 1400 per 100 ml |
| 9 Sep 2024, 12:40 | 170 | 170 per 100 ml |
| 2 Aug 2024, 10:00 | 99 | 99 per 100 ml |
| 5 Jul 2024, 13:43 | 840 | 840 per 100 ml |
| 14 Jun 2024, 11:44 | 240 | 240 per 100 ml |
| 1 May 2024, 12:21 | 830 | 830 per 100 ml |
| 2 Apr 2024, 11:36 | 510 | 510 per 100 ml |
Everything measured here
17 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 17 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Mar 2026 | 113.6% 26 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Mar 2026 | 12.9 mg/l 26 Mar 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Mar 2026 | 9.7 °C 26 Mar 2026 |
| pH 0061 | River water | 22 | Oct 2023 – Mar 2026 | 8.45 26 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – Mar 2026 | below 0.03 mg/l 26 Mar 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Mar 2026 | 9.28 mg/l 26 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Mar 2026 | 0.15 mg/l 26 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Mar 2026 | 861 µS/cm 26 Mar 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 12 | Apr 2024 – Mar 2025 | 320 per 100 ml 3 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Oct 2023 – Mar 2026 | 240 mg/l 26 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Mar 2026 | below 0.00054 mg/l 26 Mar 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 12 | Apr 2024 – Mar 2025 | 72 colony forming units / 100ml 3 Mar 2025 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 12 | Apr 2024 – Mar 2025 | 72 colony forming units / 100ml 3 Mar 2025 |
| MST Filtration 4926 | River water | 10 | Jun 2024 – Mar 2025 | DNA Stored 3 Mar 2025 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Mar 2026 | 0.021 mg/l 26 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – Mar 2026 | 9.3 mg/l 26 Mar 2026 |
| Volume of Sample Filtered 4865 | River water | 10 | Jun 2024 – Mar 2025 | 920 millilitre 3 Mar 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.