Arch Brook Prior to Teign

EA name: ARCH BROOK PRIOR TO TEIGN
Environment Agency sampling point SW-70610805 · 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: 21 Sep 2026, 10:4710 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked: 40 since 6 May 2025 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) · results completed 25 Sep 2026
Where: National Grid 290942, 72045As published, to the nearest 1 m. Open in a map
River, by its own name: Arch Brook
River, by the map: Arch BrookPlaced on the river its name gives, 2 m from the line.
Next gauge downstream: None tracedIts water reaches the sea without passing a gauge.
Why it was sampled: Planned investigation (local monitoring) (40 samples)

Results here were completed a median of 4 days after the sample was taken (4 to 10 days, 25 samples).

Main measurements, river water

E. coli

confirmed, membrane filtration · code 2348 · per 100 ml

670 per 100 ml

Sampled 21 Sep 2026, 10 days ago · 39 results banked

Every result (39)

Sampled	Result as published	Reads as
21 Sep 2026, 10:47	670	670 per 100 ml
10 Sep 2026, 11:30	1100	1100 per 100 ml
3 Sep 2026, 11:05	3100	3100 per 100 ml
24 Aug 2026, 11:30	1200	1200 per 100 ml
14 Aug 2026, 11:12	1500	1500 per 100 ml
10 Aug 2026, 13:04	1400	1400 per 100 ml
3 Aug 2026, 14:20	2100	2100 per 100 ml
28 Jul 2026, 11:18	2600	2600 per 100 ml
23 Jul 2026, 10:35	600	600 per 100 ml
15 Jul 2026, 12:25	1200	1200 per 100 ml
11 Jul 2026, 14:59	2000	2000 per 100 ml
6 Jul 2026, 11:19	350	350 per 100 ml
1 Jul 2026, 12:41	430	430 per 100 ml
24 Jun 2026, 11:42	220	220 per 100 ml
18 Jun 2026, 11:44	370	370 per 100 ml
10 Jun 2026, 10:54	110	110 per 100 ml
7 Jun 2026, 10:18	290	290 per 100 ml
1 Jun 2026, 10:53	700	700 per 100 ml
26 May 2026, 11:04	550	550 per 100 ml
19 May 2026, 11:15	600	600 per 100 ml
22 Sep 2025, 12:43	320	320 per 100 ml
16 Sep 2025, 13:50	490	490 per 100 ml
7 Sep 2025, 15:27	1200	1200 per 100 ml
2 Sep 2025, 14:07	5100	5100 per 100 ml
28 Aug 2025, 10:00	520	520 per 100 ml
20 Aug 2025, 12:07	1500	1500 per 100 ml
13 Aug 2025, 11:20	12000	12000 per 100 ml
5 Aug 2025, 15:42	7300	7300 per 100 ml
31 Jul 2025, 14:34	87000	87000 per 100 ml
22 Jul 2025, 11:14	850	850 per 100 ml
9 Jul 2025, 11:41	1000	1000 per 100 ml
2 Jul 2025, 11:07	780	780 per 100 ml
23 Jun 2025, 11:20	1300	1300 per 100 ml
17 Jun 2025, 13:25	1100	1100 per 100 ml
9 Jun 2025, 11:43	1500	1500 per 100 ml
4 Jun 2025, 11:41	470	470 per 100 ml
31 May 2025, 11:23	510	510 per 100 ml
15 May 2025, 12:01	6300	6300 per 100 ml
6 May 2025, 15:30	220	220 per 100 ml

Everything measured here

5 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 5 rows

Determinand	Material	Results	First – last	Latest result
Escherichia coli : Confirmed : MF 2348	River water	39	May 2025 – Sep 2026	670 per 100 ml 21 Sep 2026
Enterococci: Intestinal: Presumptive: MF 3722	River water	38	May 2025 – Sep 2026	440 colony forming units / 100ml 21 Sep 2026
MST Filtration 4926	River water	40	May 2025 – Sep 2026	DNA Stored 21 Sep 2026
Salinity : In Situ 7608	River water	40	May 2025 – Sep 2026	0.29 parts per thousand 21 Sep 2026
Volume of Sample Filtered 4865	River water	40	May 2025 – Sep 2026	910 millilitre 21 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.