Septic Tank cleaning for Chatham-Kent and surrounding areas. Sanitation services for Chatham-Kent, Essex County and beyond At Dover Sanitation, we have spent over 30 years serving customers throughout Chatham-Kent and Essex County with professional sanitation services. We offer a wide range of sanitation services including septic tank cleaning and the land application of biosolids/NASM, and we accomplish these tasks through the use of our trucks and professional sanitation equipment. more... See more text