Town Drain downstream of confluence Boston
EA name: TOWN DRN D/S CONF. BOSTON
Environment Agency sampling point AN-CALD5 · 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
- 4 Aug 2026, 11:5558 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 since 4 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 531166, 342296As published, to the nearest 1 m. Open in a map
- River, by its own name
- Town Drn
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (29 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Main measurements, river water
Water temperature
code 0076 · °C
12.2 °C
Sampled 21 Mar 2025, 18 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 Mar 2025, 13:24 | 12.2 | 12.2 °C |
| 17 Feb 2025, 12:54 | 4.9 | 4.9 °C |
| 27 Jan 2025, 11:46 | 5.6 | 5.6 °C |
| 5 Dec 2024, 11:56 | 9.7 | 9.7 °C |
| 4 Nov 2024, 12:59 | 11.1 | 11.1 °C |
| 2 Oct 2024, 15:16 | 13.8 | 13.8 °C |
| 5 Sep 2024, 14:03 | 15.4 | 15.4 °C |
| 6 Aug 2024, 11:57 | 16.4 | 16.4 °C |
| 4 Jul 2024, 12:53 | 14.1 | 14.1 °C |
| 11 Jun 2024, 14:19 | 12.7 | 12.7 °C |
| 6 Mar 2024, 12:40 | 8.3 | 8.3 °C |
| 6 Feb 2024, 12:35 | 10.2 | 10.2 °C |
| 8 Jan 2024, 12:05 | 5.4 | 5.4 °C |
| 1 Dec 2023, 12:27 | 4.4 | 4.4 °C |
| 1 Nov 2023, 12:00 | 12.3 | 12.3 °C |
| 4 Oct 2023, 11:59 | 13.1 | 13.1 °C |
pH
code 0061
7.62
Sampled 4 Aug 2026, 58 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:55 | 7.62 | 7.62 |
| 3 Jul 2026, 11:10 | 7.52 | 7.52 |
| 15 Jun 2026, 10:46 | 7.48 | 7.48 |
| 11 May 2026, 12:07 | 7.76 | 7.76 |
| 1 Apr 2026, 10:59 | 7.68 | 7.68 |
| 4 Mar 2026, 10:50 | 7.71 | 7.71 |
| 2 Feb 2026, 13:48 | 7.78 | 7.78 |
| 9 Jan 2026, 11:49 | 8.12 | 8.12 |
| 3 Dec 2025, 12:25 | 7.69 | 7.69 |
| 10 Nov 2025, 13:58 | 7.65 | 7.65 |
| 23 Oct 2025, 11:26 | 7.61 | 7.61 |
| 9 Sep 2025, 11:09 | 7.8 | 7.8 |
| 15 Aug 2025, 12:49 | 7.72 | 7.72 |
| 28 Jul 2025, 11:53 | 7.56 | 7.56 |
| 26 Jun 2025, 13:44 | 7.76 | 7.76 |
| 21 May 2025, 10:43 | 7.68 | 7.68 |
| 4 Apr 2025, 11:39 | 7.93 | 7.93 |
| 21 Mar 2025, 13:24 | 8.26 | 8.26 |
| 17 Feb 2025, 12:54 | 7.82 | 7.82 |
| 27 Jan 2025, 11:46 | 7.91 | 7.91 |
| 5 Dec 2024, 11:56 | 7.65 | 7.65 |
| 4 Nov 2024, 12:59 | 7.72 | 7.72 |
| 2 Oct 2024, 15:16 | 7.46 | 7.46 |
| 5 Sep 2024, 14:03 | 7.6 | 7.6 |
| 6 Aug 2024, 11:57 | 7.53 | 7.53 |
| 4 Jul 2024, 12:53 | 7.56 | 7.56 |
| 11 Jun 2024, 14:19 | 7.56 | 7.56 |
| 3 May 2024, 10:44 | 7.64 | 7.64 |
| 2 Apr 2024, 14:26 | 8.23 | 8.23 |
| 6 Mar 2024, 12:40 | 7.74 | 7.74 |
| 6 Feb 2024, 12:35 | 8.02 | 8.02 |
| 8 Jan 2024, 12:05 | 7.61 | 7.61 |
| 1 Dec 2023, 12:27 | 7.72 | 7.72 |
| 1 Nov 2023, 12:00 | 7.56 | 7.56 |
| 4 Oct 2023, 11:59 | 7.49 | 7.49 |
Everything measured here
81 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 81 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Temperature of Water 0076 | River water | 16 | Oct 2023 – Mar 2025 | 12.2 °C 21 Mar 2025 |
| pH 0061 | River water | 35 | Oct 2023 – Aug 2026 | 7.62 4 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 3 May 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Aldrin 0483 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 4 Aug 2026 |
| Arsenic 6046 | River water | 16 | Oct 2023 – Mar 2025 | 2.8 µg/l 21 Mar 2025 |
| Arsenic, Dissolved 6045 | River water | 35 | Oct 2023 – Aug 2026 | 2.8 µg/l 4 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 16 | Oct 2023 – Mar 2025 | 2.8 mg/l 21 Mar 2025 |
| Cadmium 0108 | River water | 16 | Oct 2023 – Mar 2025 | below 0.1 µg/l 21 Mar 2025 |
| Cadmium, Dissolved 0106 | River water | 35 | Oct 2023 – Aug 2026 | below 0.01 µg/l 4 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 35 | Oct 2023 – Aug 2026 | 130 mg/l 4 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 35 | Oct 2023 – Aug 2026 | 2.6 mg/l 4 Aug 2026 |
| Chromium 3164 | River water | 16 | Oct 2023 – Mar 2025 | 0.66 µg/l 21 Mar 2025 |
| Copper 6452 | River water | 16 | Oct 2023 – Mar 2025 | 2.4 µg/l 21 Mar 2025 |
| Copper : BLM Bioavailable 4821 | River water | 35 | Oct 2023 – Aug 2026 | 0.06 µg/l 4 Aug 2026 |
| Copper, Dissolved 6450 | River water | 35 | Oct 2023 – Aug 2026 | 0.55 µg/l 4 Aug 2026 |
| Dieldrin 0511 | River water | 32 | Oct 2023 – Aug 2026 | 0.0086 µg/l 4 Aug 2026 |
| Endrin 0562 | River water | 32 | Oct 2023 – Aug 2026 | below 0.003 µg/l 4 Aug 2026 |
| Flow : Daily total 6425 | River water | 12 | Oct 2023 – Mar 2025 | 0 cubic metre per day 21 Mar 2025 |
| HCH -alpha 0487 | River water | 25 | Oct 2023 – Aug 2026 | below 0.0001 µg/l 4 Aug 2026 |
| HCH -beta 0491 | River water | 26 | Oct 2023 – Aug 2026 | below 0.0001 µg/l 4 Aug 2026 |
| HCH -delta 0495 | River water | 26 | Oct 2023 – Aug 2026 | below 0.0001 µg/l 4 Aug 2026 |
| HCH -gamma :- {Lindane} 0499 | River water | 32 | Oct 2023 – Aug 2026 | below 0.0001 µg/l 4 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Isodrin 9494 | River water | 33 | Oct 2023 – Aug 2026 | below 0.001 µg/l 4 Aug 2026 |
| Lead 0050 | River water | 16 | Oct 2023 – Mar 2025 | below 2 µg/l 21 Mar 2025 |
| Lead : BLM Bioavailable 3377 | River water | 35 | Oct 2023 – Aug 2026 | 0.02 µg/l 4 Aug 2026 |
| Lead, Dissolved 0052 | River water | 35 | Oct 2023 – Aug 2026 | below 0.1 µg/l 4 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 35 | Oct 2023 – Aug 2026 | 14 mg/l 4 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Nickel 6462 | River water | 16 | Oct 2023 – Mar 2025 | 1.6 µg/l 21 Mar 2025 |
| Nickel : BLM Bioavailable 3878 | River water | 35 | Oct 2023 – Aug 2026 | 0.31 µg/l 4 Aug 2026 |
| Nickel, Dissolved 3410 | River water | 35 | Oct 2023 – Aug 2026 | 0.88 µg/l 4 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | May 2024 – May 2024 | 0.0013 µg/l 3 May 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | May 2024 – May 2024 | 0.0034 µg/l 3 May 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | May 2024 – May 2024 | 0.00091 µg/l 3 May 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | May 2024 – May 2024 | 0.0005 µg/l 3 May 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | May 2024 – May 2024 | 0.00081 µg/l 3 May 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | May 2024 – May 2024 | 0.0022 µg/l 3 May 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | May 2024 – May 2024 | below 0.006 µg/l 3 May 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 3 May 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Phenols : Monohydric as Phenol 0749 | River water | 13 | Feb 2024 – Mar 2025 | below 0.04 mg/l 21 Mar 2025 |
| Solids, Suspended at 105 C 0135 | River water | 18 | Oct 2023 – Mar 2025 | 31 mg/l 21 Mar 2025 |
| Tributyl Tin as Cation 8944 | River water | 31 | Oct 2023 – Aug 2026 | 0.00054 µg/l 4 Aug 2026 |
| Visible oil or grease, significant trace: Present/Not found (1/0) 0664 | River water | 16 | Oct 2023 – Mar 2025 | Not found 21 Mar 2025 |
| Zinc 6455 | River water | 16 | Oct 2023 – Mar 2025 | 6 µg/l 21 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.