Llanelli - Live Sewage

Polluted by sewage 6,366 hours in 2026 so far..

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View Annual Sewage Data

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

Daily Data

We get information about overflowing CSOs since January 2025. Here is a chart of the last three months of data for Llanelli, 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	1567f9fbf331ef377488c7dba70524c4aba4127af0672f318530753b3c5091c8	42	905 h 30m	37.71
Dwr Cymru Welsh Water	beea9014226f454ffd29b328ddd541ee46405e9e40f9982862e4e30e4c43cedf	42	868 h 15m	36.17
Dwr Cymru Welsh Water	6e86c6eaab231fd2fd382f13135aaba6f0fc093dab5c915dda9bcf933761e65c	41	746 h 30m	31.08
Dwr Cymru Welsh Water	5d85f7127f5abd013392f773b8b0c7c3f4909973525cf61ca009bbc07b0e990a	32	615 h 45m	25.62
Dwr Cymru Welsh Water	a3c6161ad7c27793f3d400c8e8cbf7093dc8d647617b6773c748d6725f289749	37	551 h 45m	22.96
Dwr Cymru Welsh Water	f92a3820d626f926b7dcf3b38c7d21dba81818970530c9fe36ccded2bd4ec7a8	31	450 h 5m	18.75
Dwr Cymru Welsh Water	ec4e6d5a9c493094ae479881199705a319a7c16e1308548be594d39818e53774	26	396 h 29m	16.5
Dwr Cymru Welsh Water	5dfd2588fe51137cb05fbf0fe3c1b4b2bb7c9f83d2de243f88d6fbdcc9903f99	20	314 h 3m	13.08
Dwr Cymru Welsh Water	8546b8399d2a8e6b22f8305ceaa138dc13a6482f90647adc065cf18921c5157c	31	230 h 47m	9.58
Dwr Cymru Welsh Water	ca47e856c5476bc7d01b9b62e14c6e2b73d2542163f056bd865819c5d6f26693	22	180 h 48m	7.5
Dwr Cymru Welsh Water	bc1cc11952b7616b3bf9a8d849dc14ac0b1cf2265605bf9a568e3c34f3752ca1	13	105 h 36m	4.38
Dwr Cymru Welsh Water	b98592f1043d67db4cde94a599ce80e5d83ac2f1e4a6af898f6b9505d3259ff9	17	92 h 21m	3.83
Dwr Cymru Welsh Water	73dfa60731213314c77db1dd9c4c1a1608ab8d48cd1c6eaaf0ce7267e9b6362a	19	86 h 51m	3.58
Dwr Cymru Welsh Water	b70c22672280e2a9266dda4d8a401a450cced9e2f882368821d911948a2dad15	7	79 h 30m	3.29
Dwr Cymru Welsh Water	18d70055d52a0b69e668a19644f3879f04a265ed54f63d6b35a0ac56884c4009	17	73 h 47m	3.04
Dwr Cymru Welsh Water	e7379b038d6dc825fbf574e77670abcfd6cc7dfe54d2f66573142ea63b1b5092	17	72 h 53m	3
Dwr Cymru Welsh Water	62ffe61adbaf88926925a475624d1995ab18b1b8967aab41c0dd907c318826e7	10	64 h	2.67
Dwr Cymru Welsh Water	2bebfca1bcaf744939a374c43f7cb795f4d62f5ddc4b9bf901e0b2b2ee42d7c4	19	60 h 30m	2.5
Dwr Cymru Welsh Water	2088ff727e09c8735a7c7b64eed2603b0aee804804fd12743f3bf24f303c2984	16	45 h 30m	1.88
Dwr Cymru Welsh Water	f7b9342a6c05468ebf39b29fb43a5a0ed0c9e2bdff20670dd88f5eca70dfcf95	16	36 h 38m	1.5
Dwr Cymru Welsh Water	6218874e865aab4efa4e38c8d9d8f75d1fc9b4c0c980c5a735fe0f1bf3eba130	5	35 h 58m	1.46
Dwr Cymru Welsh Water	437e08bfac3c12a09210ea295fdb7688d2f90139c7fa98b3213e1ef7221e0198	12	32 h 15m	1.33
Dwr Cymru Welsh Water	ac810f5613efe499bfd5a9417e025640c0f55af8f2cf077e223b730bba140ac1	3	29 h 30m	1.21
Dwr Cymru Welsh Water	8d6328f2a63aba365b85f660087519e650e9c2e4dd7c5baed1a8cf484d181199	11	28 h 15m	1.17
Dwr Cymru Welsh Water	07ffd34fbb307a22fce483f6327173799768da472ed93f14d8b41e80380ed4e8	2	25 h	1.04
Dwr Cymru Welsh Water	3f610b4a544775a41d706d83fc22c5d4e7b6393fb9b8164b7b571afb5d659994	3	23 h 14m	0.96
Dwr Cymru Welsh Water	5ee731e3492db82e5fca9539277edc96c2ec27160071995714dfc14167f0f9bc	5	19 h 30m	0.79
Dwr Cymru Welsh Water	32ac0760013d9db249447ac658027e737e19f3b8956f781af66769e5075ec5f7	7	19 h 28m	0.79
Dwr Cymru Welsh Water	8342a4d3328581a4b8db9a9b9cae21e5ec016145be61860254bf121deb18d191	10	18 h 30m	0.75
Dwr Cymru Welsh Water	f7139190b349bb37530a2da4c514a82ca96be8ddfef869902925047d84c71301	6	18 h 28m	0.75
Dwr Cymru Welsh Water	f76a84d13074009dd0f617a9e86b6ddcbe6d18d45742bc927fe750f1d9760d6e	6	15 h 30m	0.62
Dwr Cymru Welsh Water	03ca21c6c894f786be3303b050e1f0dcbe1cda47c43d0872427bb117b33f7b54	2	15 h	0.62
Dwr Cymru Welsh Water	89214d7348913ad1af735ba6ceb9b782dc76d4125777bd4dfb74fd12e0cafdf1	10	11 h 15m	0.46
Dwr Cymru Welsh Water	b5349e71d3b653b4f4a8fda66a6dc31e65fd4863d78ed41eabb3e0888cd7e782	5	11 h	0.46
Dwr Cymru Welsh Water	6a2a4e97c6b517be7c4905fe7a7ff43d516e3a9c1d32bcb8e2872edb2d2c6f07	11	10 h 45m	0.42
Dwr Cymru Welsh Water	cc1f329dc37792e5c1795cda011b425493af320a79c22bf8a83ee80715203fee	5	9 h 41m	0.38
Dwr Cymru Welsh Water	0bb777db5f44d7a8451c7c7de1470ac9f32dab00a3346ddba76bbfec7f7e026c	1	9 h	0.38
Dwr Cymru Welsh Water	0c729bdf09648a65263795a7b75d64b4522574dccd85d02cc3c283f6c8bc0fa0	5	7 h	0.29
Dwr Cymru Welsh Water	98ec34a690184335d08e373701f2f247f5d243f89bc701f52a8564cf0f87bcf1	3	6 h 51m	0.25
Dwr Cymru Welsh Water	97330eca4a0449beb2cd0104e9f2c0feac5ce5ca477a8f3c2393e493f1f674ca	3	6 h 44m	0.25
Dwr Cymru Welsh Water	5aba75fd23710efce25a59684fe02400693a57aa56128e0474bbbe5d17b86762	2	5 h 30m	0.21
Dwr Cymru Welsh Water	9118833dd82d5ba0cc9d6f2fe777e56d8b27cc7a650e93955e1ac2b8c67fb32d	2	5 h 15m	0.21
Dwr Cymru Welsh Water	f82ff05f76beb3315ee73f3b6855f1a49d76e5abb7745b5a2ad19852d8d0312e	3	4 h 45m	0.17
Dwr Cymru Welsh Water	a8f2d727445033a520d1fef61615803c537d9fbeb99c95898d61dab6dc73667d	6	3 h 16m	0.12
Dwr Cymru Welsh Water	731bcf17dd1ebc3f23490f5ce39ee009a792a66612c4f2104cd863f76de95eaa	6	3 h 16m	0.12
Dwr Cymru Welsh Water	6eba58cef2dac82d3c47ac1882d9c5cdf86c6c48c286ad874e0ca250fa1d2ff9	3	3 h	0.12
Dwr Cymru Welsh Water	6c9e2eb5b381e8583a6e1db4d0c322f18ce7c9cedde95f24cd17f4f49c755780	1	2 h 30m	0.08
Dwr Cymru Welsh Water	2281c119284e84fc99dd1cfe493521c018c3b749968ec943ce97d3aa1f6a8b9d	2	1 h 54m	0.04
Dwr Cymru Welsh Water	f28e68cc7c030da6f18a744719f6c4ca16155f6fc57dc6a53a5794202951474e	1	1 h 45m	0.04
Dwr Cymru Welsh Water	dc918969d3b8d07901c38ac0760ad65a498c4fc720ef7f929566912800d71d22	4	1 h	0.04
Dwr Cymru Welsh Water	6c746254e4ab8953c0205939dc1f889b03102b9e0c0e51ebbab0bee7fd930762	2	0 h 45m	0
Dwr Cymru Welsh Water	143278bb8b26e5d5219279cc630c0ebe539348d580955cc6bfa93d32966ddb17	2	0 h 43m	0
Dwr Cymru Welsh Water	bdd5869da9ce9b5487d90c769b1ad4e17e7ca5262bab404d77d1d222ef3b1b1f	1	0 h 30m	0
Dwr Cymru Welsh Water	0cfdf4d3322c7b6671c6b63e5551867beed790a75bdb6932a43731b593eba809	1	0 h 29m	0
Dwr Cymru Welsh Water	d6f7125ffd99c8d0a486cec02cd9eb66fbbcf5d15e9ca2f95cc609517718ad5f	1	0 h 29m	0
Dwr Cymru Welsh Water	56b5988194128b8b8c11bbcd3cefc46c94e16991ac099283c6748eba59fecf21	1	0 h 15m	0
Dwr Cymru Welsh Water	623359b650d01d1f3cd2b79fab50ca28e9e3b2049a4466735c60fd0e9632e060	0	0 h	0
Dwr Cymru Welsh Water	33eea9d1a54bb2da131f5f7e23c40d6600410412905bf0c3454d55e4094f4d90	0	0 h	0
Dwr Cymru Welsh Water	02d54cd3b4f79658984741679be743c08debbbba3c52e19f61c5cb0769121e49	0	0 h	0
Dwr Cymru Welsh Water	0b8a87abd5c7281f06c2b17f946bacab30ebb644ecc36459052750fe8f878ca7	0	0 h	0
Dwr Cymru Welsh Water	f4e36d0d7211ce668b75fc343b8c2a8bce1efabf5c0443d11f2582a004b21d8e	0	0 h	0
Dwr Cymru Welsh Water	106db3a081c493e023064f04eaeb0447044953abff2bfd46c7ac49164c997db4	0	0 h	0
Dwr Cymru Welsh Water	fbd7415aa362a38d61049c2a3f990e4bed1f9f70318c7c38ba8e591ee9448c8c	0	0 h	0
Dwr Cymru Welsh Water	dc97688438afc581f814a76e022f0d6c0308a3335ff16f8869c0e6b84faaec10	0	0 h	0
Dwr Cymru Welsh Water	8373cc3a2b07967c9d673720e0830ee87d2f49dd23c8723bc3e740ac208e665d	0	0 h	0
Dwr Cymru Welsh Water	5a55c5d2be652acf1e889f985b237c12edb435091a6f497478173b5c9f7fb925	0	0 h	0
Dwr Cymru Welsh Water	d0dd68401228df1e268b42bd16e96c60e0d9b3225afd9aab8b50b938eaf08d82	0	0 h	0
Dwr Cymru Welsh Water	50e701d799f0bac2fbe079fb875bc4fc54d45bc8585145192ccc7a25879c1e96	0	0 h	0
Dwr Cymru Welsh Water	d2078b0d83b85af141cc6390524441fee5d8a96af94609a7ac53e67fe1467d0a	0	0 h	0
Dwr Cymru Welsh Water	2c62294589e2681461b85ca2dbb85b2a56840f935e71c123139bd66ff1d2328c	0	0 h	0
Dwr Cymru Welsh Water	d38738479764550aaa805771ff347709bf975fb30418c0a64cd68c37fa07bf07	0	0 h	0
Dwr Cymru Welsh Water	bcbb06e59c50913583765a39a105495c6a9d3aa7b0f5f3e8ddfd7459b3f0d871	0	0 h	0
Dwr Cymru Welsh Water	51a06fed1e735c1804c5859fd037b1381096bae634ef688377a37500f5fa486f	0	0 h	0
Dwr Cymru Welsh Water	cc3c809ad2df1f5898ab9cfe98ffcabff66ebf9b106b7d3b89f31dd841743cd1	0	0 h	0
Dwr Cymru Welsh Water	16bfd681588f7f529f48871041575a25e7b48a4443af7c762da2ee2d19c52fe0	0	0 h	0
Dwr Cymru Welsh Water	b989064e487c2d1b93836ccffc144a21ba0048bf934424bee587c4826ada8239	0	0 h	0
Dwr Cymru Welsh Water	e0d3b4ac79a298455b19ea24947d5ead2ac91a0861d5e713dea0a18f2c40ba40	0	0 h	0
Dwr Cymru Welsh Water	d498993ef621e90dfba0a863f7cccf285371b8c8cba2dd0782d4472655665175	0	0 h	0
Dwr Cymru Welsh Water	3bfdb4a1a4fd38c714b90eaf15bb65c5b224ee30cf6537e4cac874045be65973	0	0 h	0
Dwr Cymru Welsh Water	7a857848ce4fa452b5cfdb10e780a9a4024730c2b0cddb394ac0c306d66654fa	0	0 h	0
Dwr Cymru Welsh Water	ba82fa41b75b0a401ee464d31a4f5d4098ea8a78fa41d779fcba090be91d7dd6	0	0 h	0
Dwr Cymru Welsh Water	8f999351a2c69c7041e40a69606dee72ae446bafcdd2e0bb044e3970f739c3f5	0	0 h	0
Dwr Cymru Welsh Water	fa6cb508bd4cafaf7059305c4a1e04e785910ff3f939fe189274fbff257efc26	0	0 h	0
Dwr Cymru Welsh Water	874d917e99d0674ff2118af4c7127243bc8c62ef390d037ce7ece322f442ce65	0	0 h	0
Dwr Cymru Welsh Water	98565d91a502a697a4c1cbf561900be13e3285fff4c6b58da344a172ae66c491	0	0 h	0
Dwr Cymru Welsh Water	31176c83361a34e96ce9d8cab107e535c8dfa4b9436e7d0ee9422a50f09c137e	0	0 h	0
Dwr Cymru Welsh Water	303de6f7281724f340dd3983b86f673c035823c6c2c8a002a18f079358982906	0	0 h	0
Dwr Cymru Welsh Water	be1c6d6ce0ecf8fd0c99fac454413dc2257902107d4ce91295757fff33996b31	0	0 h	0
Dwr Cymru Welsh Water	5e4aef6c287e09461783102d95f1f5d6b906c0150686ee71ecafedcb20df0d1a	0	0 h	0
Dwr Cymru Welsh Water	8208f33d85653d9491b403515f58a44b4cb00699b160a26f7c478453c34d14cd	0	0 h	0
Dwr Cymru Welsh Water	a9d6d0b4ced5ee5a740125ed601f47fcffadb5a0af809692c0d539beb4097327	0	0 h	0
Dwr Cymru Welsh Water	a36ff586a0086531125c322b665b6d11f836e8c74f84cf2c0e3735916539b305	0	0 h	0
Dwr Cymru Welsh Water	3ad1d0595bd897175ef7c5f62e54e324c9ed6d5784808642b762c57a1672134a	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.

Analysing sewage pollution by the Water Industry

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Llanelli - Live Sewage Polluted by sewage 6,366 hours in 2026 so far..

Llanelli - Live Sewage