Watling Hope - Wastewater Treatment and Pumping Specialists | Watling Hope sewage, treatment, pumping, plant, grease, management, trap, drainage, services, rainwater, harvesting, maintenence Watling Hope are a specialist wastewater engineering company based in Stratford Upon Avon. We provide sewage treatment, sewage pumping, rainwater harvesting and grease management services for customers across the UK. Our clients range from private properties to commercial and industrial applications.