Mill Brook downstream of Hills Farm

EA name: MILL BRK D/S HILLS FM
Environment Agency sampling point SW-E3181450 · 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
18 Sep 2026, 13:0913 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
18 since 2 Apr 2025 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) · results completed 23 Sep 2026
Where
National Grid 345000, 119700As published, to the nearest 100 m (so up to about 70 m out). Open in a map
River, by its own name
Mill Brook
River, by the map
Mill BrookPlaced on the river its name gives, 8 m from the line.
Next gauge downstream
Gaw Bridge On the River Parrett · 0.8 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (18 samples)

Results here were completed a median of 3 days after the sample was taken (2 to 13 days, 13 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

116.2%

Sampled 18 Sep 2026, 13 days ago · 18 results banked

6080100120%2024202520262 Apr 2025, 11:12: 109.6%13 May 2025, 13:22: 108.5%4 Jun 2025, 11:10: 90.6%16 Jul 2025, 10:09: 93.1%6 Aug 2025, 13:44: 111.7%3 Sep 2025, 09:41: 63.1%2 Oct 2025, 13:17: 105.2%5 Nov 2025, 13:10: 92.6%2 Dec 2025, 12:24: 94.1%5 Jan 2026, 11:00: 99.9%11 Feb 2026, 13:09: 95.7%25 Mar 2026, 13:15: 107.8%16 Apr 2026, 13:56: 105.3%7 May 2026, 12:07: 93%4 Jun 2026, 13:18: 78.1%3 Jul 2026, 10:58: 88.1%24 Aug 2026, 12:19: 94.8%18 Sep 2026, 13:09: 116.2%
Every result (18)
SampledResult as publishedReads as
18 Sep 2026, 13:09116.2 116.2%
24 Aug 2026, 12:1994.8 94.8%
3 Jul 2026, 10:5888.1 88.1%
4 Jun 2026, 13:1878.1 78.1%
7 May 2026, 12:0793 93%
16 Apr 2026, 13:56105.3 105.3%
25 Mar 2026, 13:15107.8 107.8%
11 Feb 2026, 13:0995.7 95.7%
5 Jan 2026, 11:0099.9 99.9%
2 Dec 2025, 12:2494.1 94.1%
5 Nov 2025, 13:1092.6 92.6%
2 Oct 2025, 13:17105.2 105.2%
3 Sep 2025, 09:4163.1 63.1%
6 Aug 2025, 13:44111.7 111.7%
16 Jul 2025, 10:0993.1 93.1%
4 Jun 2025, 11:1090.6 90.6%
13 May 2025, 13:22108.5 108.5%
2 Apr 2025, 11:12109.6 109.6%

Dissolved oxygen

as O2 · code 9924 · mg/l

11.5 mg/l

Sampled 18 Sep 2026, 13 days ago · 18 results banked

68101214mg/l2024202520262 Apr 2025, 11:12: 12.3 mg/l13 May 2025, 13:22: 10.5 mg/l4 Jun 2025, 11:10: 9.23 mg/l16 Jul 2025, 10:09: 8.94 mg/l6 Aug 2025, 13:44: 10.6 mg/l3 Sep 2025, 09:41: 6.13 mg/l2 Oct 2025, 13:17: 10.6 mg/l5 Nov 2025, 13:10: 9.39 mg/l2 Dec 2025, 12:24: 10.7 mg/l5 Jan 2026, 11:00: 13.4 mg/l11 Feb 2026, 13:09: 10.8 mg/l25 Mar 2026, 13:15: 12.3 mg/l16 Apr 2026, 13:56: 11 mg/l7 May 2026, 12:07: 9.86 mg/l4 Jun 2026, 13:18: 7.8 mg/l3 Jul 2026, 10:58: 8.53 mg/l24 Aug 2026, 12:19: 9.35 mg/l18 Sep 2026, 13:09: 11.5 mg/l
Every result (18)
SampledResult as publishedReads as
18 Sep 2026, 13:0911.5 11.5 mg/l
24 Aug 2026, 12:199.35 9.35 mg/l
3 Jul 2026, 10:588.53 8.53 mg/l
4 Jun 2026, 13:187.8 7.8 mg/l
7 May 2026, 12:079.86 9.86 mg/l
16 Apr 2026, 13:5611 11 mg/l
25 Mar 2026, 13:1512.3 12.3 mg/l
11 Feb 2026, 13:0910.8 10.8 mg/l
5 Jan 2026, 11:0013.4 13.4 mg/l
2 Dec 2025, 12:2410.7 10.7 mg/l
5 Nov 2025, 13:109.39 9.39 mg/l
2 Oct 2025, 13:1710.6 10.6 mg/l
3 Sep 2025, 09:416.13 6.13 mg/l
6 Aug 2025, 13:4410.6 10.6 mg/l
16 Jul 2025, 10:098.94 8.94 mg/l
4 Jun 2025, 11:109.23 9.23 mg/l
13 May 2025, 13:2210.5 10.5 mg/l
2 Apr 2025, 11:1212.3 12.3 mg/l

Water temperature

code 0076 · °C

15.8 °C

Sampled 18 Sep 2026, 13 days ago · 18 results banked

05101520°C2024202520262 Apr 2025, 11:12: 10 °C13 May 2025, 13:22: 16.7 °C4 Jun 2025, 11:10: 14.4 °C16 Jul 2025, 10:09: 17.2 °C6 Aug 2025, 13:44: 17.6 °C3 Sep 2025, 09:41: 16.6 °C2 Oct 2025, 13:17: 14.9 °C5 Nov 2025, 13:10: 14.6 °C2 Dec 2025, 12:24: 9.6 °C5 Jan 2026, 11:00: 3.1 °C11 Feb 2026, 13:09: 9.8 °C25 Mar 2026, 13:15: 9.6 °C16 Apr 2026, 13:56: 13.3 °C7 May 2026, 12:07: 12.6 °C4 Jun 2026, 13:18: 15.3 °C3 Jul 2026, 10:58: 16.8 °C24 Aug 2026, 12:19: 15.9 °C18 Sep 2026, 13:09: 15.8 °C
Every result (18)
SampledResult as publishedReads as
18 Sep 2026, 13:0915.8 15.8 °C
24 Aug 2026, 12:1915.9 15.9 °C
3 Jul 2026, 10:5816.8 16.8 °C
4 Jun 2026, 13:1815.3 15.3 °C
7 May 2026, 12:0712.6 12.6 °C
16 Apr 2026, 13:5613.3 13.3 °C
25 Mar 2026, 13:159.6 9.6 °C
11 Feb 2026, 13:099.8 9.8 °C
5 Jan 2026, 11:003.1 3.1 °C
2 Dec 2025, 12:249.6 9.6 °C
5 Nov 2025, 13:1014.6 14.6 °C
2 Oct 2025, 13:1714.9 14.9 °C
3 Sep 2025, 09:4116.6 16.6 °C
6 Aug 2025, 13:4417.6 17.6 °C
16 Jul 2025, 10:0917.2 17.2 °C
4 Jun 2025, 11:1014.4 14.4 °C
13 May 2025, 13:2216.7 16.7 °C
2 Apr 2025, 11:1210 10 °C

pH

code 0061

8.17

Sampled 18 Sep 2026, 13 days ago · 18 results banked

7.47.67.888.28.42024202520262 Apr 2025, 11:12: 8.3613 May 2025, 13:22: 8.314 Jun 2025, 11:10: 8.1116 Jul 2025, 10:09: 8.116 Aug 2025, 13:44: 8.273 Sep 2025, 09:41: 7.572 Oct 2025, 13:17: 8.165 Nov 2025, 13:10: 8.062 Dec 2025, 12:24: 7.795 Jan 2026, 11:00: 8.2111 Feb 2026, 13:09: 7.7825 Mar 2026, 13:15: 8.2716 Apr 2026, 13:56: 8.257 May 2026, 12:07: 8.164 Jun 2026, 13:18: 7.953 Jul 2026, 10:58: 8.1224 Aug 2026, 12:19: 7.9818 Sep 2026, 13:09: 8.17
Every result (18)
SampledResult as publishedReads as
18 Sep 2026, 13:098.17 8.17
24 Aug 2026, 12:197.98 7.98
3 Jul 2026, 10:588.12 8.12
4 Jun 2026, 13:187.95 7.95
7 May 2026, 12:078.16 8.16
16 Apr 2026, 13:568.25 8.25
25 Mar 2026, 13:158.27 8.27
11 Feb 2026, 13:097.78 7.78
5 Jan 2026, 11:008.21 8.21
2 Dec 2025, 12:247.79 7.79
5 Nov 2025, 13:108.06 8.06
2 Oct 2025, 13:178.16 8.16
3 Sep 2025, 09:417.57 7.57
6 Aug 2025, 13:448.27 8.27
16 Jul 2025, 10:098.11 8.11
4 Jun 2025, 11:108.11 8.11
13 May 2025, 13:228.31 8.31
2 Apr 2025, 11:128.36 8.36

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 18 Sep 2026, 13 days ago · 17 results banked

0.020.040.060.080.1mg/l20242025202613 May 2025, 13:22: 0.086 mg/l4 Jun 2025, 11:10: 0.058 mg/l16 Jul 2025, 10:09: below 0.03 mg/l (not detected above this)6 Aug 2025, 13:44: below 0.03 mg/l (not detected above this)3 Sep 2025, 09:41: below 0.03 mg/l (not detected above this)2 Oct 2025, 13:17: below 0.03 mg/l (not detected above this)5 Nov 2025, 13:10: below 0.03 mg/l (not detected above this)2 Dec 2025, 12:24: below 0.03 mg/l (not detected above this)5 Jan 2026, 11:00: below 0.03 mg/l (not detected above this)11 Feb 2026, 13:09: 0.045 mg/l25 Mar 2026, 13:15: below 0.03 mg/l (not detected above this)16 Apr 2026, 13:56: 0.054 mg/l7 May 2026, 12:07: 0.04 mg/l4 Jun 2026, 13:18: 0.061 mg/l3 Jul 2026, 10:58: 0.034 mg/l24 Aug 2026, 12:19: below 0.03 mg/l (not detected above this)18 Sep 2026, 13:09: below 0.03 mg/l (not detected above this)
Every result (17)
SampledResult as publishedReads as
18 Sep 2026, 13:09<0.03 below 0.03 mg/l (not detected above this)
24 Aug 2026, 12:19<0.03 below 0.03 mg/l (not detected above this)
3 Jul 2026, 10:580.034 0.034 mg/l
4 Jun 2026, 13:180.061 0.061 mg/l
7 May 2026, 12:070.04 0.04 mg/l
16 Apr 2026, 13:560.054 0.054 mg/l
25 Mar 2026, 13:15<0.03 below 0.03 mg/l (not detected above this)
11 Feb 2026, 13:090.045 0.045 mg/l
5 Jan 2026, 11:00<0.03 below 0.03 mg/l (not detected above this)
2 Dec 2025, 12:24<0.03 below 0.03 mg/l (not detected above this)
5 Nov 2025, 13:10<0.03 below 0.03 mg/l (not detected above this)
2 Oct 2025, 13:17<0.03 below 0.03 mg/l (not detected above this)
3 Sep 2025, 09:41<0.03 below 0.03 mg/l (not detected above this)
6 Aug 2025, 13:44<0.03 below 0.03 mg/l (not detected above this)
16 Jul 2025, 10:09<0.03 below 0.03 mg/l (not detected above this)
4 Jun 2025, 11:100.058 0.058 mg/l
13 May 2025, 13:220.086 0.086 mg/l

Nitrate

as nitrogen (N) · code 0117 · mg/l

below 0.196 mg/l (not detected above this)

Sampled 18 Sep 2026, 13 days ago · 17 results banked

02468mg/l20242025202613 May 2025, 13:22: 1.48 mg/l4 Jun 2025, 11:10: 1.18 mg/l16 Jul 2025, 10:09: 0.646 mg/l6 Aug 2025, 13:44: 0.466 mg/l3 Sep 2025, 09:41: 0.883 mg/l2 Oct 2025, 13:17: 0.846 mg/l5 Nov 2025, 13:10: 1.39 mg/l2 Dec 2025, 12:24: 6.48 mg/l5 Jan 2026, 11:00: 3.29 mg/l11 Feb 2026, 13:09: 3.29 mg/l25 Mar 2026, 13:15: 2.28 mg/l16 Apr 2026, 13:56: 1.98 mg/l7 May 2026, 12:07: 1.49 mg/l4 Jun 2026, 13:18: 1.37 mg/l3 Jul 2026, 10:58: 0.591 mg/l24 Aug 2026, 12:19: below 0.196 mg/l (not detected above this)18 Sep 2026, 13:09: below 0.196 mg/l (not detected above this)
Every result (17)
SampledResult as publishedReads as
18 Sep 2026, 13:09<0.196 below 0.196 mg/l (not detected above this)
24 Aug 2026, 12:19<0.196 below 0.196 mg/l (not detected above this)
3 Jul 2026, 10:580.591 0.591 mg/l
4 Jun 2026, 13:181.37 1.37 mg/l
7 May 2026, 12:071.49 1.49 mg/l
16 Apr 2026, 13:561.98 1.98 mg/l
25 Mar 2026, 13:152.28 2.28 mg/l
11 Feb 2026, 13:093.29 3.29 mg/l
5 Jan 2026, 11:003.29 3.29 mg/l
2 Dec 2025, 12:246.48 6.48 mg/l
5 Nov 2025, 13:101.39 1.39 mg/l
2 Oct 2025, 13:170.846 0.846 mg/l
3 Sep 2025, 09:410.883 0.883 mg/l
6 Aug 2025, 13:440.466 0.466 mg/l
16 Jul 2025, 10:090.646 0.646 mg/l
4 Jun 2025, 11:101.18 1.18 mg/l
13 May 2025, 13:221.48 1.48 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.12 mg/l

Sampled 18 Sep 2026, 13 days ago · 17 results banked

0.050.10.150.2mg/l20242025202613 May 2025, 13:22: 0.076 mg/l4 Jun 2025, 11:10: 0.12 mg/l16 Jul 2025, 10:09: 0.16 mg/l6 Aug 2025, 13:44: 0.14 mg/l3 Sep 2025, 09:41: 0.14 mg/l2 Oct 2025, 13:17: 0.087 mg/l5 Nov 2025, 13:10: 0.11 mg/l2 Dec 2025, 12:24: 0.1 mg/l5 Jan 2026, 11:00: 0.057 mg/l11 Feb 2026, 13:09: 0.094 mg/l25 Mar 2026, 13:15: 0.07 mg/l16 Apr 2026, 13:56: 0.084 mg/l7 May 2026, 12:07: 0.074 mg/l4 Jun 2026, 13:18: 0.13 mg/l3 Jul 2026, 10:58: 0.18 mg/l24 Aug 2026, 12:19: 0.15 mg/l18 Sep 2026, 13:09: 0.12 mg/l
Every result (17)
SampledResult as publishedReads as
18 Sep 2026, 13:090.12 0.12 mg/l
24 Aug 2026, 12:190.15 0.15 mg/l
3 Jul 2026, 10:580.18 0.18 mg/l
4 Jun 2026, 13:180.13 0.13 mg/l
7 May 2026, 12:070.074 0.074 mg/l
16 Apr 2026, 13:560.084 0.084 mg/l
25 Mar 2026, 13:150.07 0.07 mg/l
11 Feb 2026, 13:090.094 0.094 mg/l
5 Jan 2026, 11:000.057 0.057 mg/l
2 Dec 2025, 12:240.1 0.1 mg/l
5 Nov 2025, 13:100.11 0.11 mg/l
2 Oct 2025, 13:170.087 0.087 mg/l
3 Sep 2025, 09:410.14 0.14 mg/l
6 Aug 2025, 13:440.14 0.14 mg/l
16 Jul 2025, 10:090.16 0.16 mg/l
4 Jun 2025, 11:100.12 0.12 mg/l
13 May 2025, 13:220.076 0.076 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

803 µS/cm

Sampled 18 Sep 2026, 13 days ago · 18 results banked

20040060080010001200µS/cm2024202520262 Apr 2025, 11:12: 704 µS/cm13 May 2025, 13:22: 708 µS/cm4 Jun 2025, 11:10: 722 µS/cm16 Jul 2025, 10:09: 634 µS/cm6 Aug 2025, 13:44: 615 µS/cm3 Sep 2025, 09:41: 377 µS/cm2 Oct 2025, 13:17: 691 µS/cm5 Nov 2025, 13:10: 576 µS/cm2 Dec 2025, 12:24: 532 µS/cm5 Jan 2026, 11:00: 704 µS/cm11 Feb 2026, 13:09: 503 µS/cm25 Mar 2026, 13:15: 666 µS/cm16 Apr 2026, 13:56: 662 µS/cm7 May 2026, 12:07: 674 µS/cm4 Jun 2026, 13:18: 540 µS/cm3 Jul 2026, 10:58: 830 µS/cm24 Aug 2026, 12:19: 1005 µS/cm18 Sep 2026, 13:09: 803 µS/cm
Every result (18)
SampledResult as publishedReads as
18 Sep 2026, 13:09803 803 µS/cm
24 Aug 2026, 12:191005 1005 µS/cm
3 Jul 2026, 10:58830 830 µS/cm
4 Jun 2026, 13:18540 540 µS/cm
7 May 2026, 12:07674 674 µS/cm
16 Apr 2026, 13:56662 662 µS/cm
25 Mar 2026, 13:15666 666 µS/cm
11 Feb 2026, 13:09503 503 µS/cm
5 Jan 2026, 11:00704 704 µS/cm
2 Dec 2025, 12:24532 532 µS/cm
5 Nov 2025, 13:10576 576 µS/cm
2 Oct 2025, 13:17691 691 µS/cm
3 Sep 2025, 09:41377 377 µS/cm
6 Aug 2025, 13:44615 615 µS/cm
16 Jul 2025, 10:09634 634 µS/cm
4 Jun 2025, 11:10722 722 µS/cm
13 May 2025, 13:22708 708 µS/cm
2 Apr 2025, 11:12704 704 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
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 18 Apr 2025 – Sep 2026 116.2% 18 Sep 2026
Oxygen, Dissolved as O2 9924 River water 18 Apr 2025 – Sep 2026 11.5 mg/l 18 Sep 2026
Temperature of Water 0076 River water 18 Apr 2025 – Sep 2026 15.8 °C 18 Sep 2026
pH 0061 River water 18 Apr 2025 – Sep 2026 8.17 18 Sep 2026
Ammoniacal Nitrogen as N 0111 River water 17 May 2025 – Sep 2026 below 0.03 mg/l 18 Sep 2026
Nitrate as N 0117 River water 17 May 2025 – Sep 2026 below 0.196 mg/l 18 Sep 2026
Orthophosphate, reactive as P 0180 River water 17 May 2025 – Sep 2026 0.12 mg/l 18 Sep 2026
Conductivity at 25 C 0077 River water 18 Apr 2025 – Sep 2026 803 µS/cm 18 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 17 May 2025 – Sep 2026 250 mg/l 18 Sep 2026
Ammonia un-ionised as N 0119 River water 17 May 2025 – Sep 2026 below 0.00084 mg/l 18 Sep 2026
Nitrite as N 0118 River water 17 May 2025 – Sep 2026 below 0.004 mg/l 18 Sep 2026
Nitrogen, Total Oxidised as N 0116 River water 17 May 2025 – Sep 2026 below 0.2 mg/l 18 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.