The Billion-dollar Flush by Wayne Erb is an engaging non-fiction text that takes students deep beneath Auckland to explore one of New Zealand’s largest and most ambitious infrastructure projects: the Central Interceptor wastewater tunnel. Through clear explanations, diagrams, and real-world voices from engineers, geologists, and environmental advisors, students learn how science, technology, and engineering work together to solve complex urban and environmental problems.

This text supports students to build strong comprehension of complex informational texts, interpret technical vocabulary, and analyse how authors use structure, diagrams, and real examples to explain sophisticated ideas. The text also encourages critical thinking about sustainability, population growth, and human impact on waterways, helping students connect learning to real issues in Aotearoa New Zealand. This text is ideal for inquiry learning, STEM integration, and discussions about future-focused solutions for growing cities.

 

This pack contains wide range of response activities including:

• A guided reading plan exploring key literacy elements including inference and deduction, language use, making connection and text organisation, along with key questioning to promote emotional intelligence, metacognition and compassionate inquiry. 
• An independent learning contract complete with explainer videos for activity clarity
  
• A wide range of response activities to support developing and embedding key literacy skills including sentence and word work, spelling, and cloze activities. 

Curriculum Phase: Phase 3

Year Level: Year 8

English – Reading: comprehension of complex non-fiction, technical vocabulary, author’s purpose, text structure and features, integrating information from text and diagrams, making connections to real-world issues

Technology – Technological Knowledge: large-scale engineering systems, problem-solving and design, infrastructure development, evaluating technological solutions, future-focused planning

Science: environmental impact, water systems, sustainability, human impact on ecosystems

Text Type: Non-fiction / informational report with diagrams and explanatory text

 

Key words include: Aotearoa New Zealand, Auckland, Central Interceptor, diagrams, engineering, engineers, environmental impact, flooding, geotechnical engineering, geologists, groundwater, infrastructure, informational text, pipes, pollution, population growth, pumps, sewerage, sewerage networks, sewage, sewers, STEM, stormwater, sustainability, technical vocabulary, technology, treatment plants, tunnel-boring machine, tunnels, urban growth, water systems, waterways, wastewater.