Porthmadog

Polluted by sewage 326 times in 2024 lasting 691 hours

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Totals for Porthmadog in 2024

9 Sites polluted by Dwr Cymru Welsh Water

326 sewage dumps

691 hours duration

That's 28.79 days. 6.3 times a week, on average

Change Over Time

Waterways in Porthmadog

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Pollution Summary 2024

Here are all the reported sewage overflow totals for Porthmadog in 2024. Sometimes sewage can be being dumped for months at a time.

Reporting refers to how much of the time the monitoring was active. In this locality all the declared CSOs appeared to have monitoring enabled for more than 50% of the year

Company	Waterway	Site	Sewage Dumps	Duration (Hours)	Reporting %
Dwr Cymru Welsh Water	Cyt Bach Surface Watercourse	SNOWDON STREET PS	135	530	99.9
Dwr Cymru Welsh Water	River Glaslyn	BORTH Y GES PS	33	60	99.3
Dwr Cymru Welsh Water	Un-Named Stream	PORTHMADOG - LOMBARD STREET SS	84	28	98.6
Dwr Cymru Welsh Water	River Glaslyn	BRITANNIA PS	9	23	99.9
Dwr Cymru Welsh Water	Nant Y Cyt	CHAPEL STREET/MADOG STREET PORTHM	20	18	86.2
Dwr Cymru Welsh Water	Stream Leading To Cyt Stre	TREMADOG SSO	15	17	99.9
Dwr Cymru Welsh Water	River Glaslyn	CSO at Porthmadog Borth-Y-Gest SPS	25	12	99.4
Dwr Cymru Welsh Water	River Glaslyn	AMMANDA TERRACE BORTH Y GEST PORTHM	3	0	54.5
Dwr Cymru Welsh Water	Nant Y Cyt	BAKERS LANE/CHANDLERS PLACE PORTH	2	0	98.7

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

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