Ensuring practical, safe working water pressure: Municipal and private water companies use pumps & pumping stations to boost water pressure in the supply mains. This enables adequate water supply for fire fighting and for high-rise buildings to overcome the loss of pressure as elevation increases. These pumps & pumping stations also maintain water supply to water towers and supply tanks. Pressure in water supply mains can exceed 200psi. Most plumbing codes require water pressure reducing valves on domestic systems where the municipal water main’s pressure exceeds 80psi.
Higher pressures could rupture pipes, damage fixtures and injure the people using them.