Pontypridd - Live Sewage

Polluted by sewage 4,433 hours in 2026 so far..

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

Which Year?

Select Another Constituency

Select the constituency from the drop-down
✔ means we have live data (𝑥 if not)

View Annual Sewage Data

You're looking at the totals that we have calculated for sewage in Pontypridd 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

Take Action

Your local MP is Alex Davies-Jones (Labour) - Find out more about their interests, donors, and voting at They Work For You

Share this page, post a message, and tell others about the huge problem of sewage pollution across the UK
Post
Post

Constituencies near Pontypridd

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Pontypridd, 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.
We need your support!

We managed to raise £150 in 2024. That's not enough to keep the site running. Please consider a one-off or small recurring donation.

Donate Now

Totals so far

Company CSO ID Overflow Days Total Duration (hours) Total Duration (days)
Dwr Cymru Welsh Water 5bab3d108044a43451ab73b6035d18516daad91543a5d799c19e4e82cbd9b37f 39 794 h 45m 33.08
Dwr Cymru Welsh Water a62ff99d51fee46842c7e22cbbfd8eaa925f7a1cae192d3d37c0a87490953c6e 37 778 h 12m 32.42
Dwr Cymru Welsh Water 0a262c95f662b1f1b9766b232ff629bb88626efa56c41ff4c13b6a4a1cbb2bad 28 433 h 18.04
Dwr Cymru Welsh Water bc6912301e3013eb23df7fbb8f84ff8ba26287885cf0af6004d8eb38a5b5659f 30 418 h 37m 17.42
Dwr Cymru Welsh Water 43c90e4cb894bf2f18cdbe9687dc71b355d63cd85a0c123559e7c58f0ea4ea5a 31 393 h 55m 16.38
Dwr Cymru Welsh Water 4d37d9c0ecf8d894826d31c91ab185be22b6060360ba9c359b39f676c10d5858 27 361 h 15m 15.04
Dwr Cymru Welsh Water 602fec6875fa74efa2f83636cd192ac43f25651b05dffe1c5fe72bd8a34ad5d4 28 265 h 22m 11.04
Dwr Cymru Welsh Water edfb38e75745ce8506af7cb8afddfe8285ea7efeb6d6f30568669ae9169d7312 22 157 h 38m 6.54
Dwr Cymru Welsh Water 10468b7f5e079892ec4a1484ab950e2e410a25f9872b80c38ce6fcdf7f6376ea 22 148 h 6.17
Dwr Cymru Welsh Water 2640676b62564d1460799f3af437db8006a47659c72669ce79d86bf8db15c04e 21 100 h 22m 4.17
Dwr Cymru Welsh Water d701c8e963f67f6b864ac3ca4a7a991f99ce0bead838236138a5dfd7718acea7 19 90 h 4m 3.75
Dwr Cymru Welsh Water 5af78f685dcc05d361332b7d022448929a43233126fce1ad772234368997ed26 7 75 h 13m 3.12
Dwr Cymru Welsh Water 315ca4f238929377819078a17b09032c4a9b3109b57541a2e560597fa829c034 21 67 h 23m 2.79
Dwr Cymru Welsh Water 1c32e117ef83ce3a83a6bc6789cbac7cc7e03b0bc512d87d0eb676aa840ca299 17 61 h 2.54
Dwr Cymru Welsh Water 5ca1a8ed40068959e370603c514753885c0d2abbb153f17dd9e35521df48c0ff 15 48 h 33m 2
Dwr Cymru Welsh Water 909d3234ad1e5fa5e0caea6103f8b952606e068d730fa44e6a6111c838f556f3 20 47 h 1.96
Dwr Cymru Welsh Water c1511c4bddb8c9495d12029bbdff64025ff4fa07f851d32c46b01df97c682a45 12 37 h 2m 1.54
Dwr Cymru Welsh Water e25c03b46ece5ec35ea04504c36224d557d46024d9e28d2cbea939f14c659afc 30 28 h 57m 1.17
Dwr Cymru Welsh Water beffd2c8ecb91eda729117afdb1a7ba6f2ea234d11876c5c0a2badefd433d4b8 13 28 h 22m 1.17
Dwr Cymru Welsh Water 1303faf264fe5011b59359e02e8b9367fb8f73d1eba55797aaf306031b129e19 6 17 h 19m 0.71
Dwr Cymru Welsh Water 7fedef99fc5684d0fd2f88aa93b17a61fb58fcfd0bf3feea154995e2cc5217df 19 15 h 40m 0.62
Dwr Cymru Welsh Water 48b3a3eb716520f342d443417eff4d97c04bacf6483698f3697a5c04c2c88a8a 19 12 h 54m 0.5
Dwr Cymru Welsh Water bd5744394732b36315ea2ad927518488c5742f7b8a448b6a2ccfda642f79c215 5 11 h 0.46
Dwr Cymru Welsh Water 1d56864c6a4eb73a5a8924017508d1b5bc14020fb2c33cc8b79d3044b547f65b 12 7 h 30m 0.29
Dwr Cymru Welsh Water 90b903d4fd0ce0e244221035824424bc2e2182cd354c0972ce441c45d4c37e0a 2 5 h 43m 0.21
Dwr Cymru Welsh Water c6eaffc1f7c3101328d9c74885af33d035bb009afbe1528b6eef7e8da8349d7e 6 5 h 42m 0.21
Dwr Cymru Welsh Water 4662089932e5685b7b1751a66a52cc9257280d16b1749fc346a5de1a5505febb 3 4 h 45m 0.17
Dwr Cymru Welsh Water 9039adb0b647ab2fe3fa622ab441ce680c006213a75936254acadd304cab396d 2 4 h 15m 0.17
Dwr Cymru Welsh Water 8a2cfeae2d79eb833e3b565113df10ac15a3e00655202778736283fd8b37405a 3 3 h 28m 0.12
Dwr Cymru Welsh Water 16f163f1e603e55e2c5fb32d9306a2f78e4124f926f3bf7cf50ee2d1cb617cf7 2 2 h 58m 0.08
Dwr Cymru Welsh Water 115c35f80146d93a9f1448d24c683f5d99907aa2c5081a233f466ba223130892 3 2 h 0.08
Dwr Cymru Welsh Water 4382c98c3120ffaf857b03e2b81f6a30f1497859463b11872362070483dcced3 3 1 h 28m 0.04
Dwr Cymru Welsh Water 45ef388a0b160338344aadb74a1abe7d149ed9c8cf27b5e1a2037e5af92bc562 3 1 h 0.04
Dwr Cymru Welsh Water 236c664b08fcfafcfc6a96c2ea114c75f23cc657bfe779d99e3cb81b0cafa28f 2 0 h 58m 0
Dwr Cymru Welsh Water 39fa2e02d767bbe365a7dc3636de5b610c030e49a7896a95efedfd57f805013a 3 0 h 46m 0
Dwr Cymru Welsh Water c1a9f9ee942cfe90cb4a55bee35a80ffcb218d529e6f53f0645af7e1095eca14 1 0 h 23m 0
Dwr Cymru Welsh Water 19e87273a9e65c0f57fc1853e9439bcbea10b000cc06af348afc79c4bff9ef23 1 0 h 15m 0
Dwr Cymru Welsh Water 52140bbbf7f99f050a228f7c6b54fb103b8e85007ee8e57c784bea0e47d1b639 1 0 h 14m 0
Dwr Cymru Welsh Water ba939edcea513c7271305c642962f525f3d291cc33eaf362ce441935850528fe 1 0 h 14m 0
Dwr Cymru Welsh Water de19e9ded90ff9a103db096b329dc820aa7ae5c9755af8733d9a811c1c3b4e66 1 0 h 13m 0
Dwr Cymru Welsh Water 1eb4db969b357e4c358eecba7249552754ee98d5c3d98c3f277e126cffc44883 0 0 h 0
Dwr Cymru Welsh Water 16f5184e73ad3089596b8925f394e3126ebb7c20a0e8b7944bd3554de48095bb 0 0 h 0
Dwr Cymru Welsh Water 68db7c22f2645274ca139fcd69df0318fcd49b7a47e4bd3e6ff8118963709843 0 0 h 0
Dwr Cymru Welsh Water 84fb31e2f2e0f24f9ffc45246f6ba17d3a07518921fab7f612f7555b220b5df6 0 0 h 0
Dwr Cymru Welsh Water 1eb701320db097ad086d739948b59423bb5e2af2cbf643e5a2534ae5bc943ffb 0 0 h 0
Dwr Cymru Welsh Water 21870beb56575db92a1f26381efc2aa0cfddfa38e9036b6d130647ac9b0525e6 0 0 h 0
Dwr Cymru Welsh Water 02e5134c8a2d57cf0ee5e54860a980c6effcc95441d4f51c32cd39dd06f507fd 0 0 h 0
Dwr Cymru Welsh Water 26f9494f2eafee8889a2c4d31a51b40e7933b05b725728142e017c083bec8252 0 0 h 0
Dwr Cymru Welsh Water c8cda9ef0b9429182772122b0a6f772b4d0bf802593391a576771a5716315aaa 0 0 h 0
Dwr Cymru Welsh Water 6e9d8ae3b5e020cc89a741da162694c4acb96727a1d698af88f637049e0944cd 0 0 h 0
Dwr Cymru Welsh Water 028ce4b6071ac466323ea545fa934659fe62f6f6a58242704680c3ccd0000fa8 0 0 h 0
Dwr Cymru Welsh Water 56cbf33787e7d01b826e83c30d39f61e0427e54f6225ec0160d9ada60668246b 0 0 h 0
Dwr Cymru Welsh Water 09aa458dc547d09cd84814635bc76127c1be1c26272bbedf87d31baf81db84bd 0 0 h 0
Dwr Cymru Welsh Water 60317b6c8d5d0dfe40bc3f3fd727dd153fee5f47f5a289a2718da47ad33e3af8 0 0 h 0
Dwr Cymru Welsh Water bb9871fbed07dff1c77b026a6dfbc8e122345a21f4af26b9e7ad59ae619d3691 0 0 h 0
Dwr Cymru Welsh Water 104c5ba0fd64aeb8fcb07faf96860c634db1cff5af91e598b1dad30739af3a1c 0 0 h 0
Dwr Cymru Welsh Water ef437a469f0c27c94c9c2c3158325782ba0aa6995c794a99cb375e2e54716ab4 0 0 h 0
Dwr Cymru Welsh Water ed58b32ba5f73e74d97e9ad61b557fd78a7e7f97a412a61327d2081230240490 0 0 h 0
Dwr Cymru Welsh Water 79071f228b588d54d073222b5ceb01588b7e41e6d22aca0a5b6d3d9cb7819552 0 0 h 0
Dwr Cymru Welsh Water 7dff1a2f5d7df9d53c4ec19bc757b6a8a482e568809f0716e056f3af2e59ebe6 0 0 h 0
Dwr Cymru Welsh Water 8ac4d30f682f5b9d1442565ad1f390262851c5c0e58e22cf80daca3e0774f1f8 0 0 h 0
Dwr Cymru Welsh Water 4f95c7b5766dac94fd039b04d77e537d89760a5c0f5978c75909d832a8997aba 0 0 h 0
Dwr Cymru Welsh Water 5fb0136fe76a4acde57b5dc8addb3c9d6b05f646ad807bbc3a7a2f2f92e12329 0 0 h 0
Dwr Cymru Welsh Water d00178cc685a3edc104cb1c457a4a73ab64b9143931e022e8eb57a85e27846fc 0 0 h 0
Dwr Cymru Welsh Water 048a2d548368217cd6d4319a71ef79fff77716224a9c7909c64888bac268203f 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.

Top of the Poops

Analysing sewage pollution by the Water Industry

Follow on Instagram

Media Queries

Get in touch if you have queries or want to discuss our data.

press [at] top-of-the-poops.org

Please Support Us

We rely on donations to fund our work. Please support us if you can
Yes! Support TOTP!

© 2020-2025 Top-Of-The-Poops CC-BY-SA 4.0,
© Openstreetmap contributors, Contains OS data © Crown copyright and database right 2021-2025,
Contains Water UK National Storm Overflow Hub Data CC-BY-SA 4.0 and analysis © 2025 Top-Of-The-Poops

Some data reproduced under Open Government Licence

Full Copyright information available at: our GitHub page