Yorkshire Water has announced a huge £7.8bn investment into its systems over a five year period.
The plan, which has been submitted for approval by Ofwat, focuses on improving water quality and protecting the environment.
£3.1bn will go towards improving the resilience of the pipes in the network.
A further £4.3bn will be spent on plans intended to help protect river and coastal water to create a "cleaner, safer water environment".
Nicola Shaw, chief executive of Yorkshire Water, said: "My focus since joining Yorkshire Water has been improving our performance and delivering the best value and service for customers.
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"Stakeholders and customers have made it clear they want more from us, and we’ve listened to what they’ve had to say.
"We want to play our part in making sure our wonderful county thrives by focusing our investment in the areas that matter most to our customers.
"This submission marks our largest ever environmental investment and illustrates our commitment to deliver what our customers expect.
"The programme will protect and improve the quality of water in rivers and at coasts, leading to cleaner, safer water environments that support recreation and biodiversity across the region.
"While this is what we hope to do in the next five years in terms of investment, it does not stand alone.
"We are working internally to ensure all our colleagues are engaged and pulling in the right direction to deliver this ambitious plan.
"The next steps in this process are for Ofwat to provide us with draft determinations in the early summer 2024 and then final determinations before the end of 2024 before we start the new period in April 2025."
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Yorkshire Water stated that a balance has been struck between cost to the customer and investment into the system.
The plan also includes investment to meet the Water Industry National Environment Programme priorities, including delivering the Storm Overflow Discharge Reduction Plan.
£1.9bn will be used to reduce the use of storm overflows and to protect the environment.
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