Rhondda and Ogmore - Live Sewage

Polluted by sewage 7,226 hours in 2026 so far..

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

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View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Rhondda and Ogmore so far for 2026. It is an estimate, based on very poor quality live data from the Water Companies. The water companies report their sewage to the Environment Agency every year in April. You can see the last reported year in the other page

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Constituencies near Rhondda and Ogmore

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Rhondda and Ogmore, here you can see overflows in red, the darker the red, the more the CSO overflowed that day.

Each CSO has a row, the most recent data is on the right hand side.

Monitoring Online
Monitoring Offline
Polluting
Potentially Polluting
Unknown
Daily data is experimental and data is not guaranteed to be accurate. Please inform us of any issue, we will fix.
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Totals so far

Company CSO ID Overflow Days Total Duration (hours) Total Duration (days)
Dwr Cymru Welsh Water c97b3b39c48f90412c87ce8d0e2de17effa37ba1d365486b0981e8501e934b21 39 753 h 30m 31.38
Dwr Cymru Welsh Water 614e54eda7d8f699c288604c6f4a0ec304ef4eb7014f0d7211d27ae570ba337c 37 703 h 43m 29.29
Dwr Cymru Welsh Water 2f2f158351ed3f46c5da15fcf44b29d2a3147ba4c243f805b5a526870519ff67 31 648 h 47m 27
Dwr Cymru Welsh Water 281ae14100fb58bc2a93fc7dbb5644dddd7e1191d3eea488e8ecdd6265cbfac4 38 642 h 15m 26.75
Dwr Cymru Welsh Water 1cc9617f08461ecef42a6e564799f0796b1bb34b80a6ea52914c4adb4e20c3ab 27 385 h 21m 16.04
Dwr Cymru Welsh Water 1802e40bbac012ed7fce826c73cf5380940b9ae9f2c2aa1a6c028dd5022c6cde 39 358 h 39m 14.92
Dwr Cymru Welsh Water cb9f82a0364fd5be91cc2de26b87d0fbff029aab0f9bc2628050a99feb7ad203 31 326 h 49m 13.58
Dwr Cymru Welsh Water 31dba5f19ec84eeba9f6c65e4f739e9b69ab6685401c10f9c366bc326bfec4a7 24 300 h 53m 12.5
Dwr Cymru Welsh Water f96c02e14114ffe41b2cf0f225ef0a9d75dd5413e350d5299406cfb8f8bb4e82 25 283 h 30m 11.79
Dwr Cymru Welsh Water 8de8bcb015c7f484b0da7770274e0d7736267fb6d3e686e73927e97a8b234288 29 221 h 13m 9.21
Dwr Cymru Welsh Water c320d122734a69be12d97d521dbac0be054a712202bcc49c9e14a0b92ab21b7a 17 219 h 17m 9.12
Dwr Cymru Welsh Water e784d9853dc7021910cfa6cc8ca68bdd99454ff6e13c5970a32758d3e5e7d722 33 196 h 59m 8.17
Dwr Cymru Welsh Water 2be2f69b24327645d08ada7646a2d72741a347d9ffca671cd1874743f2045c66 30 191 h 41m 7.96
Dwr Cymru Welsh Water d410aae88433587a68864230a7262e18f1ad40a343e8a6e00b1d7753fe0b654c 27 189 h 22m 7.88
Dwr Cymru Welsh Water 28fbf32cf3eaba4995fab0aa7aedb970fa00cd57e8dfb155cfe115bcc0b5b59f 27 187 h 45m 7.79
Dwr Cymru Welsh Water 007b477f27470b07f801809d6efc21fd8889d715a8439838e2679bca8ed893f2 28 174 h 40m 7.25
Dwr Cymru Welsh Water d131f13b55858c6a305cb21b93648de784c84d68534df7e2417621d0b3f446ee 26 160 h 16m 6.67
Dwr Cymru Welsh Water 0ac7fa7594319193170b9686d152d64009e1c4bb3f3ea71107943426805f3ceb 20 145 h 6.04
Dwr Cymru Welsh Water 3548fd71aeac9d9ba6fb075a9b4cf27e5d58b995170464e405846a0093838788 18 135 h 11m 5.62
Dwr Cymru Welsh Water 81f117747cf1105b964f0c2782cec67c8b0a70fe59d79d25a6545efe53f5443f 41 128 h 51m 5.33
Dwr Cymru Welsh Water eff5dc9347881496b6913666ead5b1693325a980f68f202d9b9af5db13a05a56 14 126 h 2m 5.25
Dwr Cymru Welsh Water caeebeafb80430d17c761c849da3eae756e3e916ed29e127a94080e629632db4 17 119 h 6m 4.96
Dwr Cymru Welsh Water 541922ccba455d01ede45759606ac5c51b2a01946d1bf17dc441aae029ac917b 20 73 h 28m 3.04
Dwr Cymru Welsh Water c9548a4e63b7de7f824f1a2466c505b2e2aa12965eae146ae16f246bf05650cb 22 64 h 53m 2.67
Dwr Cymru Welsh Water b723de8158203a4699520fd2aacb681dd9d8a144195f1761f8f21bdf585421d2 20 59 h 45m 2.46
Dwr Cymru Welsh Water 3c98660a95e26c58d41b1e8930a90d440f09e5ef16f2f1542e8c7c92bce3afa7 20 59 h 43m 2.46
Dwr Cymru Welsh Water 2855df25c403816711b2d90a85ca1e64f3767b2a695416217f19efe8fc02f22a 11 39 h 2m 1.62
Dwr Cymru Welsh Water 938d3d42db0e2314ebb7372936a2056854eec46338f1beae0ee9dbbc0cccf226 4 35 h 15m 1.46
Dwr Cymru Welsh Water 5bcc101029b2b899c717e686820363f244b63435a44b9b1ebf68b2caceed8e5d 14 33 h 5m 1.38
Dwr Cymru Welsh Water 6bcf4a306853ef6f71767696900c2c8bb4ea87b7cba4713a285623572483c48d 4 31 h 55m 1.29
Dwr Cymru Welsh Water 8671e7ccb7457ebe3a1031ad5eaafe583837992f54422c0b9fb341ad8f4a4497 13 31 h 52m 1.29
Dwr Cymru Welsh Water 48d222678a7ca8bd3a1a1e6d5c63d138c4eef95aa0e924011dcf5f47d14e00f6 23 26 h 45m 1.08
Dwr Cymru Welsh Water 980ca8fedb0f34fdfd63125b324e54e9e2217792f61c18763c2d302e4b651fc5 11 23 h 54m 0.96
Dwr Cymru Welsh Water fa1d133d0805f594fdc95ba83d165aec4c4bb5ebb86550637da8aca6910c4956 15 21 h 3m 0.88
Dwr Cymru Welsh Water 974c35fbd8532b9ef0de6802b01558d58002400aaa1074b4582f72d235838552 14 14 h 53m 0.58
Dwr Cymru Welsh Water c8368a80dac0b8af4dda00fdc7bf5910ad7db509d921cd83f13ec4e57528101d 13 13 h 57m 0.54
Dwr Cymru Welsh Water eb35691f68709ad6aded50e9f83a378715065f9c393a7e04d5a00dbb851f795d 11 10 h 51m 0.42
Dwr Cymru Welsh Water 5fdd7701f3408de0e2ccc1f43bd95e49ff6a0b55c8a6cac355a9fb104f1b608e 10 9 h 24m 0.38
Dwr Cymru Welsh Water 9117198d72bee7c19f9ea3ca99e7fee8eaf0f447735138f314e522297e9547e6 5 7 h 40m 0.29
Dwr Cymru Welsh Water 9bf8041fcddc03a1c2f7ca1937236342b7b77e4e202aef630a3d8b99fb3167eb 5 7 h 13m 0.29
Dwr Cymru Welsh Water 9d941c762370a3055fd6c6f99d463ae0ea25fb53cbcdbd37b5a0ce38a92e8690 7 6 h 41m 0.25
Dwr Cymru Welsh Water a9825f761caa20effb637ff0fb59e783e9fe0557666611f744704a900bccc77b 5 6 h 31m 0.25
Dwr Cymru Welsh Water 03b3205b7019d6999ec65f674587c3577d688cd06349242e22687f947dd90031 3 6 h 30m 0.25
Dwr Cymru Welsh Water ce70a2f61862bb35d1368294bb759da2b005502e5991a9fbcf3221e798e08267 3 5 h 58m 0.21
Dwr Cymru Welsh Water fe8c49d4ceb935435a8f5295d3c1933ef2bfe229b6cea273090ef30cb07ea7e9 6 4 h 0.17
Dwr Cymru Welsh Water f2699ebd889c2627059ed1e6e81c611b411f68f765a375122a4e27eb13c242cd 9 4 h 0.17
Dwr Cymru Welsh Water 8cb7960745b57391d7c46235f57f293577c1bd90da8513ea92f0cfb3fcda6f2e 2 4 h 0.17
Dwr Cymru Welsh Water 9d589cf2c786bee6d47a9a60019830eb26462552101694759b96d9015de391c6 2 3 h 29m 0.12
Dwr Cymru Welsh Water 6ba3a3bddf3f163752e3f473fbb4ff203ba93da81c718eb37aa6bf2632c3938b 6 3 h 13m 0.12
Dwr Cymru Welsh Water ebcf604b0bfb0c6ff102168ec5592310dc2acacace9c26e1930fa2a1401a1c07 6 2 h 43m 0.08
Dwr Cymru Welsh Water 16936002442cad85afcc88698bdb67db4a663f9982421874c500aa5c9f96fcae 5 2 h 15m 0.08
Dwr Cymru Welsh Water 2ab832dfa2d9c2288441901f002f48676191eafde67146260b41fe82ccfb8273 5 2 h 11m 0.08
Dwr Cymru Welsh Water 156ec84dd632e1ee4388d620bf337b621de36bb12b82cb8e53a1144c0d1b11cc 3 1 h 59m 0.04
Dwr Cymru Welsh Water 3abb6f2aeb1df4ca8b875d6b3c66dfda5206ff955e18ffd877f0fd2d04df89c7 1 1 h 44m 0.04
Dwr Cymru Welsh Water 4a8b0ca90d49385c3a889695385f47c33d64660ce48eb6325ef9d4a5ac5d5755 3 1 h 43m 0.04
Dwr Cymru Welsh Water a4a636af9a6d03ad17be826eedc3417b5e1f8a5e79656f2847a75dae9a28cca9 4 1 h 0.04
Dwr Cymru Welsh Water 6e74f38c26fcf63dd6565c1e85d6bd0f007c692467afba854ec1ba9c28319372 3 0 h 45m 0
Dwr Cymru Welsh Water aa3ba2be7a7c78718e019e0cb4e94689d1cabb90bf07caf3a7b83eabbb539b4d 2 0 h 45m 0
Dwr Cymru Welsh Water a02b911b96a27ca829772b1a565d5d4578a2efaa429915923ce97b04a90dd3b2 2 0 h 30m 0
Dwr Cymru Welsh Water dae068aa2f915f80afe005ed7013c7d42a42d879afa8decc7addfc668a1bfc26 1 0 h 30m 0
Dwr Cymru Welsh Water 06bcd525011d4ac884c586f6df9778580dc52b753ae5cd80805b0c961eb11f4b 2 0 h 29m 0
Dwr Cymru Welsh Water 3cb65ee6e6733cba84a57688ae7d857856dd62ace94eff74b7910d0f8a6296cd 1 0 h 29m 0
Dwr Cymru Welsh Water 2997ac5852ebfb758b0625f1bdacc354781c7311900e0c6dabd3f44ddd63f1e8 1 0 h 29m 0
Dwr Cymru Welsh Water 3b38404c5d1529b3fe9a1a3ee9d1979860f9c4561b55d0ba964c4c44c987870c 1 0 h 15m 0
Dwr Cymru Welsh Water 0dfc3027a9be0af3ca743c060bcc3229a9253b1fe2322d0992a3da75dfc42981 1 0 h 15m 0
Dwr Cymru Welsh Water 4cf7cd257a51dacbac77f53d3767db561d333dfa4430dae25e3a062ba90bf380 1 0 h 15m 0
Dwr Cymru Welsh Water f1492db6c654a4f0e346688cad03a541b956fec2e3596fd5a5fcb90ec7678818 1 0 h 14m 0
Dwr Cymru Welsh Water c48d2f736b4650dc9e5a4127ec32a8ee14b7d1eae5d54c22b128fc486f823c00 0 0 h 0
Dwr Cymru Welsh Water 7661747b1aad0ab820cfc9d7fe4990e18a2523b80c0c5b659baf6bfccfd7aad9 0 0 h 0
Dwr Cymru Welsh Water 0d854f0915584a4fa16253ced6b16ee4101541ed597f200ac84aaad2ca697f44 0 0 h 0
Dwr Cymru Welsh Water d96be27ee564aa71f36cffedbfe566195e9a085eea2ac5ce6d1b6a9d13896e3b 0 0 h 0
Dwr Cymru Welsh Water 8ff1cc65def2ab69db74a4501898c7832ad54d02474e7eb3eea24deefa66d232 0 0 h 0
Dwr Cymru Welsh Water 2f59f16747bbe0307f329fb9a4733f0255a843e41ef00a3760b7b6c2ead76f44 0 0 h 0
Dwr Cymru Welsh Water c5e9ed1784a687d5b067032a5773f63129d5bde448e2bf4880f76aab064e39ca 0 0 h 0
Dwr Cymru Welsh Water 3aedb075cde65a2893e652b6ed46f2826a2c78be523da22abf0054a8798969f2 0 0 h 0
Dwr Cymru Welsh Water 0cfabec9b804ed8ce38f107082c86729432efff3a1f86c01d059b4ff92ab4b8c 0 0 h 0
Dwr Cymru Welsh Water 738d9935eade9a527f0ca7d589876dfc8d5afdaf5434ddc92e6a322d6d181b76 0 0 h 0
Dwr Cymru Welsh Water 776b28f1895caf04add58a1e3e506865c7af408038ee4050e3724999ff86d6b2 0 0 h 0
Dwr Cymru Welsh Water 2dffcd5813fd4564f7a63bfe16b7408be4f75fae6745600a92a2d08cd37fd439 0 0 h 0
Dwr Cymru Welsh Water 10373e7f5d4414095665d1b8c4205b31e89b45fc5595b4ad2710619c446bebbd 0 0 h 0
Dwr Cymru Welsh Water 9fb64e75f7a1885a2f6a56e0f6221e1ad0580a3822c9536ce07ca81453694b50 0 0 h 0
Dwr Cymru Welsh Water 4bf1baad5a7ee0a673050f89f5b3ae8826a7acbaca47fb6336d3a5d9c16ec709 0 0 h 0
Dwr Cymru Welsh Water 7a7f0f9be488b90641c00f0e1610170ff8c164c8038d2f08ad663102d976bf0e 0 0 h 0
Dwr Cymru Welsh Water 98bf465d05eb2ca521d000808ede3f40500b0bb30066357841f933b898a73d0e 0 0 h 0
Dwr Cymru Welsh Water 503772a3abab34319fdf6edfe24adaed59cb7bf578dc774c42c61d945cc78418 0 0 h 0
Dwr Cymru Welsh Water 20ee9ec71a1877aa3392837804188107a92d472454e50e7227682b46d3971cbb 0 0 h 0
Dwr Cymru Welsh Water 34a794042874373a481ee646a154a48fc2cfb21e190c439dc529f3a543ec6201 0 0 h 0
Dwr Cymru Welsh Water 86a54bcb9402dd09cb9a982bf16bf4b5ac618384cc9a94e64b4bdad4d8d886a5 0 0 h 0
Dwr Cymru Welsh Water 06f23cb0ea4a3cd3fa766f472776cefa1c40ffe11906f55f62b3a90e461e9224 0 0 h 0
Dwr Cymru Welsh Water 3d516ccf491a48d8e90f5211958d6b6465820ca238c8e33d38a2d5b9382788ce 0 0 h 0
Dwr Cymru Welsh Water 41eb9c472299860cda920a53ed4951d4ea7689d914c0cd3b5e224268a5496021 0 0 h 0
Dwr Cymru Welsh Water 7d5210fd48402b53563b58c873ea6c05a7b40ebddb85bc12e889eda5447d94de 0 0 h 0
Dwr Cymru Welsh Water 5a743b8e7a17e52ec80b8e53a853325b6a8e2027f392b3458fea755af7aa9848 0 0 h 0
Dwr Cymru Welsh Water 65ffa898342c3369126f36d682c810079052ae105b202a30f2ec7a2f185f700d 0 0 h 0
Dwr Cymru Welsh Water 0b8aeee2b8e8c9f024f16ae4316e7e77c70885e55b548fd236f23e83976e0217 0 0 h 0
Dwr Cymru Welsh Water 1f61df243b40ed12a443ca1ec6aa459a8210255cbf154fcfcc65cb42e97ba049 0 0 h 0
Dwr Cymru Welsh Water 50abd05beb549bcd590cac8c963c5a3f93cab66691dcd865f247562937b743a1 0 0 h 0
Dwr Cymru Welsh Water fe1d2976e3ea9c76b8a536a12e07878b3e56c8fbd78892b1303d45bfa6deeef9 0 0 h 0
Dwr Cymru Welsh Water 90e92b13fc9959595c0350a9a625e9c6e2b39d04989533c551d35eeff2e4b830 0 0 h 0
Dwr Cymru Welsh Water 458ce450fef5cc6f4c48061e779e798df9f7dee5338101e30bc8a53b217ecc8a 0 0 h 0
Dwr Cymru Welsh Water d68b160e71d9c6f600c4fc337ea237dd58595f04e482fac52fca298c19ec7fed 0 0 h 0
Dwr Cymru Welsh Water 90d2030bdb57dbeb088fb2086bfed5d161957598d47b5017ae1eb7772263cc30 0 0 h 0
Dwr Cymru Welsh Water d71becd245c70104151ff2a8ccc56eb0fcfe268fea4901a2b986519197d21d7c 0 0 h 0
Dwr Cymru Welsh Water 4d8cc30d3b3adca9495f32afd6b149d565feae8f1cd0a85d7a0565ae830b246e 0 0 h 0
Dwr Cymru Welsh Water 46c9d4661cc5ecd6386b32be4909dcddc9aadf2659ff8d1d7efa15cb24b6b343 0 0 h 0
Dwr Cymru Welsh Water f1e7445bee25374ae8213c177abbdef65a29ff1f3b7fb581f2bcd5b61ca41de7 0 0 h 0
Dwr Cymru Welsh Water aeaa36334a05da276955135d2e4c6d1a06df0a6ba094f55ac8a4349c04acf1e0 0 0 h 0
Dwr Cymru Welsh Water 816c9851b7380a3db649ca6b2a994cc746ad0b931b35b33646c2374d445fe751 0 0 h 0
Dwr Cymru Welsh Water a9e0867f8c8499a13a0828e04696dd66f9a686e8f19451e868fa9ccd61af5f9e 0 0 h 0
Dwr Cymru Welsh Water 38c0b8f67802d0bb124ef44a28b36118c4ba80824701f8977ede02aa91f7de1b 0 0 h 0
Dwr Cymru Welsh Water 133a9b4169c6f7113ec8b5fec10d45f39599ce0397ec30d4d019a2728dc6fecc 0 0 h 0
Dwr Cymru Welsh Water 15e714342de824dc7248aec13f355f135a9370102f0e369b50bb1a5bacd9cb60 0 0 h 0
Dwr Cymru Welsh Water da3795b29c58b1644d6d8b9ba51775d6bd13c7ccde563644e4c053f1310cecc0 0 0 h 0

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

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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