Before revision: Examples include pumping stations, gas regulation stations, and other buildings that house infrastructure components and equipment of water purification systems, water distribution networks, sewage treatment systems, electric power distribution, district heating, district heating, telephone exchanges, and public service telecommunication equipment.
After revision: Examples include pumping stations, gas regulation stations, and other buildings that house infrastructure components and equipment of water purification systems, water distribution networks, sewage treatment systems, electric power distribution, district heating, telephone exchanges, and public service telecommunication equipment.