WaterWatch monitors live sewage discharge events for every major water company in England and Scotland. Each company has its own page showing current discharge status and site map.
WaterWatch displays data published by the water companies themselves via their Event Duration Monitoring (EDM) systems. This data has known limitations: sensors can malfunction, go offline, or report inaccurately. A site showing “not discharging” does not guarantee no discharge is occurring — it means the monitor has not reported one. This is especially relevant for companies where live monitoring only started recently. Do not rely solely on WaterWatch to make decisions about water contact activities. Always check official guidance from your local authority and the Environment Agency.
Full history available from 2020.
⚠ Yorkshire Water historical discharge records covering 2020 are imported from time-series monitoring data. Live monitoring is active from April 2026.
⚠ Severn Trent historical discharge records covering 2021 – 2026 are imported.
⚠ Severn Trent Services live monitoring is active. Historical discharge records are not yet imported.
⚠ United Utilities historical discharge records covering 2021 – 2026 are imported and linked to current permit codes.
⚠ Northumbrian Water historical discharge records covering 2020 – 2024 are imported.
⚠ South West Water historical discharge records covering 2020 – 2026 are imported.
⚠ Southern Water has not shared historical discharge records with WaterWatch. Live monitoring is active from April 2026.
⚠ Wessex Water historical discharge records covering 2025 – 2026 are imported.
⚠ Anglian Water historical discharge records covering April 2020 – December 2024 are imported, plus monthly summaries from April 2025 onwards. The 2020-2022 export data has been matched to current permit numbers via site name resolution.
⚠ Scottish Water live monitoring is active from May 2026. Historical data is cached on-platform as API access to past events is not available.
WaterWatch is an independent monitoring service and is not affiliated with any water company. Data is sourced from each company’s public Event Duration Monitoring (EDM) API and updated every 15 minutes. WaterWatch makes no guarantee of data accuracy or completeness. Historical data coverage varies by company — see individual company pages for details. For official information about water quality, contact your water company or visit the Environment Agency.