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The week in brief · Week 42 · 12–18 October
The wastewater sector spent the week answering a practical question: who is responsible for the network, and how is that responsibility priced? Delhi approved a decade-long, performance-based model for its sewers, Ofwat settled another enforcement case in Wales, and a Danish utility signed up for micropollutant removal despite unresolved arguments over who should pay. Meanwhile, a large Chinese study put numbers on the limits of centralised treatment, and the United States widened what its wastewater surveillance can see.
The Delhi Jal Board gave in-principle approval to a "One Zone, One Operator" model worth about US$1.9 billion over 10 years. The city is split into eight zones, each run by a single operator responsible for sewer lines, manholes, pumping stations and complaint handling, with payments linked to performance. The scope is large: 11,212 km of sewers, roughly 668,000 manholes and 145 pumping stations. The stated aim is to move from complaint-led repairs to preventive maintenance, using geo-tagged inspections, a central command centre and mechanical and robotic cleaning. Delhi's water minister, Parvesh Sahib Singh, described the reform as "fixing responsibility".
In Wales, Ofwat announced that Hafren Dyfrdwy, the Severn Trent subsidiary serving about 109,000 customers in north-east and mid-Wales, will deliver a £280,000 package of measures by 2030 after the regulator found it had failed to provide adequate drainage and lacked the processes to deal effectively with wastewater. The package includes two storm water balancing tanks and a wetland habitat, and it cannot be recovered through customer bills. It is the ninth case in Ofwat's sector-wide sewage investigation, which the regulator says has secured more than £300 million in enforcement packages and fines.
