India’s urban population is projected to reach 675 million by 2035. Every day, these cities generate approximately 1,49,000 million litres of sewage, yet barely 37,000 MLD of treatment capacity exists (CPCB 2024). Rivers are turning into open sewers, groundwater is getting contaminated, and existing infrastructure is collapsing under overload. Fortunately, decentralized sewage treatment solutions are emerging as the most practical and immediate answer to this crisis. These mo