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74434fa3aa - 2025 Sewage

Ton-Mawr Road Storm Overflow

Polluted by sewage 450 hours in 2025

Currently not overflowing

© OpenStreetMap contributors
Contains OS Data © Crown copyright & database right 2021-2024
© Top of the Poops 2021-2024

Which Year?

Water Company

Dwr Cymru Welsh Water

Waterway

Afon Pelenna

Due to inconsistencies in the data from the water company, sometimes the link to the river might not work, sorry

Overflow summary

In 2025, polluted by sewage 450 hours on 59 days

Constituency

Take Action

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Sewage pollution map of Aberafan Maesteg, the constituency containing the Ton-Mawr Road Storm Overflow storm overflow
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Daily Data

Jan - 0 hours
Feb - 62 hours
Mar - 0 hours
Apr - 37 hours
May - 2 hours
Jun - 62 hours
Jul - 0 hours
Aug - 2 hours
Sept - 42 hours
Oct - 2 hours
Nov - 62 hours
Dec - 174 hours
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
Please note: We don't have rainfall data for Wales. If you know where to source it please let us know!
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Events for 74434fa3aa in 2025

Here you can see the data reported by the Water Industry 'API' - It's not very 'clean'! One particular trick that you can see is where the 'Start' date is regularly incremented, which means that unless you keep an eye on the entire history, which we do, you could be lead to believe that the overflow started much later than it did.
Note also that when the overflow is reported to 'Stop', often the start and end dates of the previous event doesn't line up with the data. This does vary in reliability between water company.

Poll Date Status Start Status Latest Event Start Latest Event End Last Updated
21/12/2025, 04:05 21/12/2025, 01:30 Stop 21/12/2025, 01:30 21/12/2025, 01:30 21/12/2025, 03:37
19/12/2025, 04:35 19/12/2025, 02:15 Stop 19/12/2025, 02:15 19/12/2025, 02:15 19/12/2025, 04:22
19/12/2025, 02:35 19/12/2025, 01:48 Start 19/12/2025, 02:22
18/12/2025, 11:35 18/12/2025, 10:44 Start 18/12/2025, 11:31
17/12/2025, 13:05 17/12/2025, 12:08 Stop 17/12/2025, 12:08 17/12/2025, 12:08 17/12/2025, 13:01
16/12/2025, 21:35 16/12/2025, 19:45 Stop 16/12/2025, 19:45 16/12/2025, 19:45 16/12/2025, 21:19
14/12/2025, 21:35 14/12/2025, 19:45 Start 14/12/2025, 21:22
14/12/2025, 19:05 14/12/2025, 17:45 Start 14/12/2025, 19:04
13/12/2025, 02:50 12/12/2025, 13:00 Stop 12/12/2025, 13:00 12/12/2025, 13:00 13/12/2025, 02:46
12/12/2025, 13:50 12/12/2025, 12:40 Start 12/12/2025, 13:25
12/12/2025, 06:50 12/12/2025, 04:04 Start 12/12/2025, 06:25
10/12/2025, 04:35 10/12/2025, 03:47 Stop 10/12/2025, 03:47 10/12/2025, 03:47 10/12/2025, 04:34
10/12/2025, 04:05 10/12/2025, 03:15 Start 10/12/2025, 04:01
10/12/2025, 03:05 10/12/2025, 02:30 Start 10/12/2025, 02:58
09/12/2025, 02:35 09/12/2025, 01:48 Start 09/12/2025, 02:19
08/12/2025, 04:35 07/12/2025, 23:45 Stop 07/12/2025, 23:45 07/12/2025, 23:45 08/12/2025, 04:31
08/12/2025, 00:05 07/12/2025, 23:17 Start 07/12/2025, 23:55
07/12/2025, 14:05 07/12/2025, 12:59 Stop 07/12/2025, 12:59 07/12/2025, 12:59 07/12/2025, 13:52
06/12/2025, 20:35 06/12/2025, 17:45 Stop 06/12/2025, 17:45 06/12/2025, 17:45 06/12/2025, 20:12
06/12/2025, 02:35 06/12/2025, 01:48 Stop 06/12/2025, 01:48 06/12/2025, 01:48 06/12/2025, 02:27
06/12/2025, 02:05 06/12/2025, 01:17 Start 06/12/2025, 01:42
05/12/2025, 16:35 05/12/2025, 13:45 Start 05/12/2025, 16:28
05/12/2025, 02:35 04/12/2025, 11:45 Stop 04/12/2025, 11:45 04/12/2025, 11:45 05/12/2025, 02:25
04/12/2025, 12:20 04/12/2025, 11:26 Start 04/12/2025, 12:01
04/12/2025, 03:50 04/12/2025, 02:47 Start 04/12/2025, 03:49
03/12/2025, 10:49 03/12/2025, 08:45 Stop 03/12/2025, 08:45 03/12/2025, 08:45 03/12/2025, 10:31
03/12/2025, 09:19 03/12/2025, 08:20 Start 03/12/2025, 09:16
03/12/2025, 06:49 Stop 03/12/2025, 06:43
02/12/2025, 06:49 01/12/2025, 02:45 Start 02/12/2025, 06:40
01/12/2025, 03:04 01/12/2025, 02:28 Stop 01/12/2025, 02:28 01/12/2025, 02:28 01/12/2025, 02:58
29/11/2025, 23:04 29/11/2025, 15:00 Stop 29/11/2025, 15:00 29/11/2025, 15:00 29/11/2025, 22:58
29/11/2025, 15:34 29/11/2025, 14:36 Start 29/11/2025, 15:22
28/11/2025, 22:33 28/11/2025, 21:18 Start 28/11/2025, 22:25
28/11/2025, 02:34 28/11/2025, 00:00 Stop 28/11/2025, 00:00 28/11/2025, 00:00 28/11/2025, 02:19
28/11/2025, 00:33 27/11/2025, 23:32 Start 28/11/2025, 00:31
27/11/2025, 17:33 27/11/2025, 16:17 Stop 27/11/2025, 16:17 27/11/2025, 16:17 27/11/2025, 17:07
27/11/2025, 11:03 27/11/2025, 10:00 Stop 27/11/2025, 10:00 27/11/2025, 10:00 27/11/2025, 10:55
27/11/2025, 10:32 27/11/2025, 09:33 Start 27/11/2025, 10:10
27/11/2025, 05:02 27/11/2025, 04:06 Stop 27/11/2025, 04:06 27/11/2025, 04:06 27/11/2025, 04:49
27/11/2025, 00:03 26/11/2025, 23:02 Start 26/11/2025, 23:55
26/11/2025, 17:33 26/11/2025, 16:47 Stop 26/11/2025, 16:47 26/11/2025, 16:47 26/11/2025, 17:28
23/11/2025, 13:02 23/11/2025, 05:15 Stop 23/11/2025, 05:15 23/11/2025, 05:15 23/11/2025, 12:58
23/11/2025, 05:32 23/11/2025, 04:47 Start 23/11/2025, 05:31
23/11/2025, 03:47 23/11/2025, 03:02 Stop 23/11/2025, 03:02 23/11/2025, 03:02 23/11/2025, 03:37
22/11/2025, 11:47 22/11/2025, 08:15 Stop 22/11/2025, 08:15 22/11/2025, 08:15 22/11/2025, 11:22
22/11/2025, 08:47 22/11/2025, 07:47 Start 22/11/2025, 08:31
22/11/2025, 06:47 22/11/2025, 06:00 Start 22/11/2025, 06:46
14/11/2025, 21:47 14/11/2025, 18:00 Stop 14/11/2025, 18:00 14/11/2025, 18:00 14/11/2025, 21:37
14/11/2025, 18:17 14/11/2025, 17:32 Start 14/11/2025, 18:10
14/11/2025, 15:32 14/11/2025, 14:47 Start 14/11/2025, 15:19
13/11/2025, 02:02 13/11/2025, 00:45 Stop 13/11/2025, 00:45 13/11/2025, 00:45 13/11/2025, 01:55
12/11/2025, 20:32 12/11/2025, 20:00 Stop 12/11/2025, 20:00 12/11/2025, 20:00 12/11/2025, 20:31
12/11/2025, 18:32 12/11/2025, 16:45 Stop 12/11/2025, 16:45 12/11/2025, 16:45 12/11/2025, 18:25
12/11/2025, 11:02 12/11/2025, 10:29 Stop 12/11/2025, 10:29 12/11/2025, 10:29 12/11/2025, 11:01
12/11/2025, 04:02 12/11/2025, 02:56 Start 12/11/2025, 03:49
09/11/2025, 22:47 09/11/2025, 22:02 Stop 09/11/2025, 22:02 09/11/2025, 22:02 09/11/2025, 22:40
07/11/2025, 16:31 06/11/2025, 00:15 Stop 06/11/2025, 00:15 06/11/2025, 00:15 07/11/2025, 16:19
04/11/2025, 14:16 Stop 04/11/2025, 14:13
03/11/2025, 13:46 03/11/2025, 12:49 Start 03/11/2025, 13:37
02/11/2025, 15:16 01/11/2025, 18:45 Stop 01/11/2025, 18:45 01/11/2025, 18:45 02/11/2025, 15:10
24/10/2025, 23:04 24/10/2025, 19:45 Stop 24/10/2025, 19:45 24/10/2025, 19:45 24/10/2025, 22:58
23/10/2025, 01:49 22/10/2025, 22:45 Stop 22/10/2025, 22:45 22/10/2025, 22:45 23/10/2025, 01:46
20/10/2025, 06:04 19/10/2025, 23:00 Stop 19/10/2025, 23:00 19/10/2025, 23:00 20/10/2025, 05:49
19/10/2025, 22:19 19/10/2025, 22:30 Start 19/10/2025, 22:07
05/10/2025, 03:17 04/10/2025, 12:15 Stop 04/10/2025, 12:15 04/10/2025, 12:15 05/10/2025, 03:13
04/10/2025, 11:17 04/10/2025, 11:48 Start 04/10/2025, 11:13
03/10/2025, 11:48 03/10/2025, 12:01 Stop 03/10/2025, 12:01 03/10/2025, 12:01 03/10/2025, 11:40
03/10/2025, 10:47 03/10/2025, 10:51 Start 03/10/2025, 10:46
29/09/2025, 03:47 28/09/2025, 05:45 Stop 28/09/2025, 05:45 28/09/2025, 05:45 29/09/2025, 03:34
28/09/2025, 05:32 28/09/2025, 05:36 Start 28/09/2025, 05:25
27/09/2025, 22:17 27/09/2025, 22:46 Start 27/09/2025, 22:13
20/09/2025, 21:32 20/09/2025, 22:00 Stop 20/09/2025, 22:00 20/09/2025, 22:00 20/09/2025, 21:25
20/09/2025, 14:17 20/09/2025, 14:00 Stop 20/09/2025, 14:00 20/09/2025, 14:00 20/09/2025, 14:16
19/09/2025, 09:32 19/09/2025, 08:45 Stop 19/09/2025, 08:45 19/09/2025, 08:45 19/09/2025, 09:22
19/09/2025, 08:02 19/09/2025, 08:30 Start 19/09/2025, 07:55
15/09/2025, 12:47 15/09/2025, 07:00 Stop 15/09/2025, 07:00 15/09/2025, 07:00 15/09/2025, 12:43
15/09/2025, 01:02 15/09/2025, 01:06 Start 15/09/2025, 01:01
14/09/2025, 05:31 13/09/2025, 19:15 Stop 13/09/2025, 19:15 13/09/2025, 19:15 14/09/2025, 05:28
13/09/2025, 18:31 13/09/2025, 18:48 Start 13/09/2025, 18:16
12/09/2025, 09:31 12/09/2025, 07:30 Stop 12/09/2025, 07:30 12/09/2025, 07:30 12/09/2025, 09:22
12/09/2025, 04:46 12/09/2025, 04:49 Start 12/09/2025, 04:43
11/09/2025, 14:01 11/09/2025, 13:00 Stop 11/09/2025, 13:00 11/09/2025, 13:00 11/09/2025, 13:55
11/09/2025, 02:01 10/09/2025, 22:00 Stop 10/09/2025, 22:00 10/09/2025, 22:00 11/09/2025, 01:52
10/09/2025, 21:31 10/09/2025, 21:33 Start 10/09/2025, 21:19
10/09/2025, 16:01 10/09/2025, 16:31 Start 10/09/2025, 15:55
10/09/2025, 03:31 10/09/2025, 03:45 Stop 10/09/2025, 03:45 10/09/2025, 03:45 10/09/2025, 03:22
10/09/2025, 03:01 10/09/2025, 03:21 Start 10/09/2025, 02:55
09/09/2025, 04:46 08/09/2025, 21:00 Stop 08/09/2025, 21:00 08/09/2025, 21:00 09/09/2025, 04:37
08/09/2025, 06:01 08/09/2025, 06:03 Start 08/09/2025, 05:46
04/09/2025, 12:01 04/09/2025, 10:45 Stop 04/09/2025, 10:45 04/09/2025, 10:45 04/09/2025, 11:46
04/09/2025, 07:31 04/09/2025, 07:31 Start 04/09/2025, 07:22
03/09/2025, 16:46 03/09/2025, 15:30 Stop 03/09/2025, 15:30 03/09/2025, 15:30 03/09/2025, 16:43
02/09/2025, 08:01 02/09/2025, 03:30 Stop 02/09/2025, 03:30 02/09/2025, 03:30 02/09/2025, 08:01
01/09/2025, 12:16 01/09/2025, 10:30 Stop 01/09/2025, 10:30 01/09/2025, 10:30 01/09/2025, 12:10
01/09/2025, 09:46 01/09/2025, 10:00 Start 01/09/2025, 09:40
30/08/2025, 18:16 30/08/2025, 18:33 Stop 30/08/2025, 18:33 30/08/2025, 18:33 30/08/2025, 18:10
30/08/2025, 17:01 30/08/2025, 16:15 Start 30/08/2025, 16:49
29/08/2025, 10:01 28/08/2025, 13:30 Stop 28/08/2025, 13:30 28/08/2025, 13:30 29/08/2025, 09:46
28/08/2025, 13:16 28/08/2025, 13:13 Start 28/08/2025, 13:01
27/08/2025, 13:31 27/08/2025, 11:45 Stop 27/08/2025, 11:45 27/08/2025, 11:45 27/08/2025, 13:28
04/08/2025, 14:31 04/08/2025, 14:30 Stop 04/08/2025, 14:30 04/08/2025, 14:30 04/08/2025, 14:19
15/07/2025, 12:30 15/07/2025, 12:46 Stop 15/07/2025, 12:46 15/07/2025, 12:46 15/07/2025, 12:16
14/07/2025, 23:31 15/07/2025, 00:00 Stop 15/07/2025, 00:00 15/07/2025, 00:00 14/07/2025, 23:25
09/07/2025, 17:31 26/06/2025, 08:45 Stop 26/06/2025, 08:45 26/06/2025, 08:45 09/07/2025, 17:22
28/06/2025, 03:31 26/06/2025, 07:45 Stop 26/06/2025, 07:45 26/06/2025, 07:45 28/06/2025, 03:25
24/06/2025, 05:01 24/06/2025, 04:15 Stop 24/06/2025, 04:15 24/06/2025, 04:15 24/06/2025, 04:55
15/06/2025, 03:31 14/06/2025, 05:15 Stop 14/06/2025, 05:15 14/06/2025, 05:15 15/06/2025, 03:25
14/06/2025, 06:01 14/06/2025, 04:57 Start 14/06/2025, 05:46
13/06/2025, 20:31 13/06/2025, 19:45 Start 13/06/2025, 20:16
13/06/2025, 20:01 13/06/2025, 19:02 Stop 13/06/2025, 19:02 13/06/2025, 19:02 13/06/2025, 19:55
13/06/2025, 19:31 13/06/2025, 18:36 Start 13/06/2025, 19:25
13/06/2025, 17:46 13/06/2025, 17:15 Stop 13/06/2025, 17:15 13/06/2025, 17:15 13/06/2025, 17:43
12/06/2025, 19:16 12/06/2025, 18:30 Stop 12/06/2025, 18:30 12/06/2025, 18:30 12/06/2025, 19:01
12/06/2025, 18:46 12/06/2025, 18:00 Start 12/06/2025, 18:37
12/06/2025, 14:16 12/06/2025, 13:18 Start 12/06/2025, 14:07
12/06/2025, 13:01 12/06/2025, 12:15 Start 12/06/2025, 12:55
12/06/2025, 11:01 12/06/2025, 10:33 Start 12/06/2025, 10:55
12/06/2025, 10:46 12/06/2025, 10:02 Start 12/06/2025, 10:34
07/06/2025, 18:15 07/06/2025, 17:30 Stop 07/06/2025, 17:30 07/06/2025, 17:30 07/06/2025, 18:13
05/06/2025, 11:15 05/06/2025, 09:45 Stop 05/06/2025, 09:45 05/06/2025, 09:45 05/06/2025, 11:07
05/06/2025, 10:31 05/06/2025, 09:19 Start 05/06/2025, 10:28
05/06/2025, 09:31 05/06/2025, 08:37 Start 05/06/2025, 09:26
05/06/2025, 03:31 Stop 05/06/2025, 03:16
04/06/2025, 03:31 04/06/2025, 02:49 Start 04/06/2025, 03:22
03/06/2025, 09:31 03/06/2025, 08:00 Start 03/06/2025, 09:22
28/05/2025, 03:16 27/05/2025, 15:00 Stop 27/05/2025, 15:00 27/05/2025, 15:00 28/05/2025, 03:10
27/05/2025, 15:31 27/05/2025, 14:37 Start 27/05/2025, 15:22
27/05/2025, 13:16 27/05/2025, 12:19 Start 27/05/2025, 13:01
26/05/2025, 22:31 26/05/2025, 21:30 Stop 26/05/2025, 21:30 26/05/2025, 21:30 26/05/2025, 22:16
01/05/2025, 19:47 01/05/2025, 18:45 Stop 01/05/2025, 18:45 01/05/2025, 18:45 01/05/2025, 19:46
25/04/2025, 12:17 24/04/2025, 03:00 Stop 24/04/2025, 03:00 24/04/2025, 03:00 25/04/2025, 12:04
24/04/2025, 14:02 24/04/2025, 12:40 Stop 24/04/2025, 12:40 24/04/2025, 12:40 24/04/2025, 13:52
24/04/2025, 03:17 24/04/2025, 02:46 Start 24/04/2025, 03:16
23/04/2025, 01:47 23/04/2025, 00:51 Stop 23/04/2025, 00:51 23/04/2025, 00:51 23/04/2025, 01:34
23/04/2025, 00:47 23/04/2025, 00:16 Stop 23/04/2025, 00:16 23/04/2025, 00:16 23/04/2025, 00:37
22/04/2025, 23:32 22/04/2025, 22:45 Stop 22/04/2025, 22:45 22/04/2025, 22:45 22/04/2025, 23:22
22/04/2025, 22:02 22/04/2025, 21:15 Start 22/04/2025, 21:49
20/04/2025, 03:21 19/04/2025, 00:30 Stop 19/04/2025, 00:30 19/04/2025, 00:30 20/04/2025, 03:13
20/04/2025, 01:06 19/04/2025, 00:36 Stop 19/04/2025, 00:36 19/04/2025, 00:36 20/04/2025, 00:52
19/04/2025, 00:51 19/04/2025, 00:07 Start 19/04/2025, 00:46
18/04/2025, 21:36 18/04/2025, 20:45 Stop 18/04/2025, 20:45 18/04/2025, 20:45 18/04/2025, 21:28
18/04/2025, 20:51 18/04/2025, 20:18 Start 18/04/2025, 20:49
18/04/2025, 19:06 18/04/2025, 18:15 Start 18/04/2025, 18:55
18/04/2025, 16:21 18/04/2025, 15:21 Stop 18/04/2025, 15:21 18/04/2025, 15:21 18/04/2025, 16:07
18/04/2025, 15:36 18/04/2025, 15:00 Start 18/04/2025, 15:34
18/04/2025, 13:21 18/04/2025, 12:37 Stop 18/04/2025, 12:37 18/04/2025, 12:37 18/04/2025, 13:13
17/04/2025, 03:51 16/04/2025, 16:30 Stop 16/04/2025, 16:30 16/04/2025, 16:30 17/04/2025, 03:49
16/04/2025, 17:06 16/04/2025, 16:19 Start 16/04/2025, 16:52
15/04/2025, 19:21 15/04/2025, 18:21 Start 15/04/2025, 19:07
15/04/2025, 18:21 15/04/2025, 17:49 Start 15/04/2025, 18:13
28/02/2025, 02:34 26/02/2025, 08:30 Stop 26/02/2025, 08:30 26/02/2025, 08:30 28/02/2025, 02:22
27/02/2025, 10:04 Stop 27/02/2025, 10:01
26/02/2025, 08:49 26/02/2025, 08:01 Start 26/02/2025, 08:37
26/02/2025, 08:04 26/02/2025, 07:31 Stop 26/02/2025, 07:31 26/02/2025, 07:31 26/02/2025, 07:58
26/02/2025, 06:04 26/02/2025, 05:16 Start 26/02/2025, 05:52
24/02/2025, 04:34 24/02/2025, 03:45 Stop 24/02/2025, 03:45 24/02/2025, 03:45 24/02/2025, 04:28
24/02/2025, 01:35 24/02/2025, 00:31 Start 24/02/2025, 01:28
23/02/2025, 13:34 23/02/2025, 13:00 Stop 23/02/2025, 13:00 23/02/2025, 13:00 23/02/2025, 13:28
23/02/2025, 13:04 23/02/2025, 12:15 Start 23/02/2025, 12:52
23/02/2025, 12:19 23/02/2025, 11:31 Start 23/02/2025, 12:13
23/02/2025, 02:19 21/02/2025, 17:00 Stop 21/02/2025, 17:00 21/02/2025, 17:00 23/02/2025, 02:10
22/02/2025, 17:19 Stop 22/02/2025, 17:16
21/02/2025, 17:34 21/02/2025, 16:36 Start 21/02/2025, 17:19
21/02/2025, 16:49 21/02/2025, 15:49 Start 21/02/2025, 16:34
21/02/2025, 15:49 21/02/2025, 14:52 Stop 21/02/2025, 14:52 21/02/2025, 14:52 21/02/2025, 15:46
21/02/2025, 14:35 21/02/2025, 13:49 Start 21/02/2025, 14:32
21/02/2025, 14:04 21/02/2025, 13:03 Stop 21/02/2025, 13:03 21/02/2025, 13:03 21/02/2025, 13:49
21/02/2025, 13:04 21/02/2025, 12:33 Stop 21/02/2025, 12:33 21/02/2025, 12:33 21/02/2025, 13:01
21/02/2025, 12:49 21/02/2025, 12:00 Start 21/02/2025, 12:43
21/02/2025, 10:34 21/02/2025, 09:45 Start 21/02/2025, 10:22
19/02/2025, 23:19 19/02/2025, 22:36 Stop 19/02/2025, 22:36 19/02/2025, 22:36 19/02/2025, 23:10
19/02/2025, 23:03 19/02/2025, 22:15 Start 19/02/2025, 22:52
09/02/2025, 16:03 01/02/2025, 02:15 Stop 01/02/2025, 02:15 01/02/2025, 02:15 09/02/2025, 02:28
07/02/2025, 22:05 01/02/2025, 02:15 Stop 01/02/2025, 02:15 01/02/2025, 02:15 03/02/2025, 02:37

Data Sources & Accuracy

EDM (Event Duration Monitoring) data and Consented Discharges to Controlled Waters with Conditions from Environment Agency & Data Map Wales, and Scottish Water

Experimental derived data from Thames Water API, Some data may be missing or inaccurate. Live sewage data from Stream Water API

Annual figures up to and including 2025 come from official water company returns. The 2026 figure is our own estimate, derived continuously from the companies' live data feeds.

Uses Environment Agency rainfall data from the real-time data API (Beta) - Rainfall data is delayed by up to two days.

This website is intended to provide an accurate representation of the Environment Agency data. The data is hard to use, and thus some errors may have been made. If you find something that is incorrect, please raise an issue at the GitHub issues page and we'll endeavour to fix it quickly.

This project is not associated, approved or endorsed by any of the companies whose logos you see here.

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