Southwest
Environmental LimitedSouthwest
Environmental Limited| London |
| 02076 920 670 |
| Exeter |
| 01392 927 961 |
| Manchester |
| 01612 970 026 |
| Bristol |
| 01173 270 092 |
This map shows the location of sewage works that are owned and operated by United Utilities . The data is divided into 2 layers, that can be toggled on and off. Larger Waste Water Treatment Works (WwTW) and Smaller Waste Water Treatment Works (Small WwTW).
You will see that some locations have a description of the type of treatment (decipher using below codes):
Buying a House Near a Sewage Works
Constraints Navigating the planning landscape within the United Utilities service area requires a sophisticated understanding of the North West’s diverse infrastructure. From the industrial legacy of the Greater Manchester and Merseyside conurbations to the sensitive rural catchments of Lancashire and the Lake District, our proprietary mapping of sewage treatment works (STW) provides the "True Data" necessary for site vetting. Identifying the proximity of these wastewater assets is critical for assessing development viability and ensuring that planning applications are robust enough to withstand regulatory scrutiny.
In the North West's major cities, the push for urban regeneration often results in residential developments being proposed on "brownfield" sites near existing wastewater infrastructure. This proximity creates significant risks regarding odour amenity and potential "encroachment" challenges. By utilizing our proprietary United Utilities STW dataset, we perform precision Odour Impact Assessments. We integrate facility-specific source data with local meteorological patterns to ensure that new residential units are positioned outside of high-risk odour contours, protecting the long-term amenity of future occupants.
Nutrient Neutrality has become a pivotal planning hurdle for developments in specific North West catchments, particularly those affecting Special Areas of Conservation (SAC) in Cumbria and parts of the River Eden or River Derwent. Our mapping allows us to identify exactly which United Utilities asset serves a site and determine its specific capability for phosphate or nitrate stripping. This localized geospatial intelligence is essential for drafting Nutrient Neutrality Assessment and Mitigation Strategies (NNAMS) that meet the requirements of Natural England and local planning authorities.
The North West possesses some of the UK’s oldest combined sewer infrastructure, making Foul and Surface Water Drainage Strategies particularly complex. Our maps help developers visualize the relationship between their site and the wider United Utilities network, facilitating better-informed decisions regarding mains connections versus sustainable on-site treatment. By identifying nearby assets and potential capacity issues early, we help our clients avoid the "Section 106" delays often associated with wastewater discharge in aging urban networks.
Whether you are dealing with a basement impact assessment in a high-density urban area or a large-scale residential scheme in a rural catchment, our United Utilities dataset provides the scientific foundation for your Planning Statement. This "True Data" approach moves beyond generic desktop surveys, offering site-specific insights that are vital for discharging planning conditions. This technical capability is a key reason why SWEL has successfully delivered over 900 projects across the UK, providing a level of geospatial detail that generic reports cannot match.