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By Brigitte Rodriguez, Publishing Associate: Researcher and Writer at Save the Water™ | July 08, 2026
Edited by Nicholas Guay, Publishing Associate: Editor at Save the Water™
In 2025, Yorkshire Water discharged untreated wastewater into the United Kingdom’s water systems for over 250,000 hours, which could have negative impacts on several bodies of water in the United Kingdom. This event put public health and aquatic ecosystems at risk. However, the company is taking responsibility and doing everything possible to reverse the environmental impacts of the discharge.
Sewage pollution occurs when untreated household or industrial wastewater leaks into lakes and rivers. This happens when the sewer system fails or a pipe bursts.
It usually occurs during heavy rains, which overload the wastewater treatment system. When this water is discharged without prior treatment, it carries harmful bacteria and chemicals. These contaminants can cause gastroenteritis, diarrhea, headaches, or fever.
When leaks occur in the water system, they affect the water supply, endangering human health and aquatic wildlife. In 2025, more than 1,200 people fell ill in England after swimming in waters contaminated by sewage discharges. These discharges affected their health, causing gastroenteritis, skin infections, and respiratory infections.
Last year, the number of discharges into rivers and seas decreased—from 88,164 to 51,404 spills—due to lower rainfall. It is important to note that the company holds a legal permit to discharge untreated wastewater to prevent the sewer system from being overloaded. A burst in the sewer system can cause flooding or sewage to enter homes.
The water treatment company is making efforts to prevent wastewater-related incidents. To that end, it will invest 1.5 billion pounds over the next five years in various projects, including:
Despite a decrease in the number of spills and significant investments by Yorkshire Water, there is still work to be done. The Water Minister, Emma Hardy, notes that she is closely monitoring the company and will conduct unannounced visits to build public trust.
Furthermore, improvements are being made to the water storage infrastructure and capacity to prevent leaks and floods. For example, projects are underway to expand reservoirs and storage tunnels.
In conclusion, Yorkshire Water is making efforts to reduce sewage pollution and improve water treatment infrastructure. However, additional measures are needed to address this issue. Effective regulation and public participation are essential to protecting water resources. We can all contribute by staying vigilant, reporting sewage discharges to the appropriate authorities, and supporting initiatives for sustainable water management.
Save the Water™ is a 501 (c)(3) non-profit organization with a mission to conduct research to identify and remove harmful contaminants in water and to raise public awareness about water contamination and its health impacts.
