For information and reference only – not to be submitted as your own work. This is a model extract showing how a postgraduate sustainability report and poster plan can be argued; use it to understand structure and depth, then build your own analysis from your own sources.

This extract responds to a Level 9 Managing for Sustainability assessment at Otago Polytechnic that pairs a short report (organisation, two sustainability models, two Māori values) with an academic poster (primary stakeholders). The organisation used here is Watercare Services Limited, Auckland’s water and wastewater provider. The report covers the nested model and the triple bottom line, with kaitiakitanga and whanaungatanga as the Māori values. The poster is shown as a content plan table, not a finished design.

Facts about Watercare come from its 2025 annual report and its Māori outcomes plan. Where a point is our reading of those documents rather than something Watercare states, the text says so. Related reading: the Otago Polytechnic question hub (the question page for this brief will be linked here once live) and our guide on how to write the Managing for Sustainability report and poster.

Part 1 – Report extract

1. Introduction

Watercare Services Limited is a council-controlled organisation wholly owned by Auckland Council. It describes itself as New Zealand’s largest provider of water and wastewater services and serves about 1.7 million people (Watercare Services Limited, 2025). Its 2025 report records 19 water treatment plants, 18 wastewater treatment plants, and a planned infrastructure investment of $13.8 billion over ten years.

That scale makes Watercare a useful case for a sustainability evaluation. It sits inside a natural system (rivers, aquifers, harbours), serves a community with strong cultural ties to water, and must still earn revenue and meet regulation. This report evaluates those tensions using the nested model and the triple bottom line, then tests Watercare’s practice against two Māori values.

2. Sustainability models

2.1 Nested model

The nested model places the economy inside society and society inside the environment, so economic activity depends on social arrangements and on ecological limits (Giddings et al., 2002). It was chosen because a water utility cannot be understood as a business alone: its raw material, its discharge and its licence to operate all sit in the environment and in community trust. The model also corrects the tendency to treat the three pillars as equal and separate (Purvis et al., 2019).

2.2 Triple bottom line

The triple bottom line asks organisations to account for economic, social and environmental performance together (Elkington, 1997). It was chosen as a contrast: it is measurable, widely used in reporting, and maps neatly onto Watercare’s performance measures. Its weakness, discussed below, is that it can imply trade-offs between pillars that the nested model rejects.

Used together, the models answer different questions. The nested model asks whether Watercare operates within limits; the triple bottom line asks whether it can show balanced results.

3. Critical evaluation of Watercare’s sustainable practices

3.1 Through the nested model

Alignment. Watercare’s guiding whakataukī, “Ki te ora te wai, ka ora te whenua, ka ora te tangata” (when the water is healthy, the land and the people are healthy), is close to nested logic: the health of people depends on the health of water and land (Watercare Services Limited, 2025). Its demand target is also a limits-based measure.

Challenges. Performance against ecological limits is mixed. Residential water use was 257 litres per person per day against a target of 253, and leakage was 12.8%, inside a target of under 13% (Watercare Services Limited, 2025). Scope 1 and 2 emissions were 80,000 tonnes CO₂e, below the 89,900 tonne target when Puketutu Island is excluded, but the report itself says the pathway to a 50% operational emissions cut by 2030 “remains challenging”. A critical reader should note that targets which are met only after exclusions say little about whether the outer environmental ring is being respected.

Opportunities. Aligning demand measurement with the Auckland Water Strategy 2022–2050 from FY26 (Watercare Services Limited, 2025) offers a stronger link between what is measured and the regional limit the strategy sets.

3.2 Through the triple bottom line

Alignment. Each pillar has visible measures. Economically, total revenue was $1,158.3 million with a net surplus of $83.0 million and a Moody’s Aa3 rating. Socially, Customer Net Satisfaction was +55 against a target of +45, and the average household spent 0.89% of income on water services against a 1.5% ceiling. Environmentally, treatment plant compliance with Taumata Arowai’s drinking water rules was reported as 100% (Watercare Services Limited, 2025).

Challenges. The social pillar contains a warning sign. The community trust score fell from 60 to 52, below a target of 55 (Watercare Services Limited, 2025). High satisfaction among customers who contact Watercare and falling trust in the wider community can sit together, and the pillar-by-pillar format does not show why. This is an interpretation, not a finding the report makes.

Opportunities. Because the model rewards measurement, Watercare could report ecological indicators with the same prominence as financial ones. With financial separation from Auckland Council taking effect on 1 July 2025, and a regulatory Charter overseen by the Commerce Commission, economic reporting will stay prominent; the risk is that environmental and cultural indicators receive less attention.

Model comparison. The triple bottom line shows Watercare doing well on measurable economic and service outcomes. The nested model asks harder questions about limits and dependence. The comparison suggests Watercare is stronger on reporting than on demonstrating that it operates within ecological limits.

4. Māori values and beliefs

4.1 Kaitiakitanga

Kaitiakitanga is commonly understood as guardianship or stewardship of the natural world, grounded in relationships between people, land and water. It draws on mātauranga Māori, the body of knowledge that Hikuroa (2017) describes as the foundation of knowledge in Aotearoa New Zealand. For an organisation, the test is whether guardianship duties shape decisions rather than decorate reports.

Watercare’s 2025 report recognises mana whenua as kaitiaki of the taiao, and its Māori outcomes plan names Te Taiao Ora (environmental wellbeing) as a focus, including support for mana whenua and mataawaka to exercise kaitiakitanga (Watercare Services Limited, 2025, 2026). That is a real commitment. The critical question is whether kaitiakitanga shapes decisions or sits beside them. The 2025 annual report uses “kaitiaki” but, in the text reviewed, does not use “kaitiakitanga” as a principle for its own operating decisions; the plan does. That difference between a supporting document and the main report is worth noting. Reported spend with Māori-owned businesses of $38.6 million (3.23% of supplier spend, against a 5% target) shows progress but also a gap.

4.2 Whanaungatanga

Whanaungatanga refers to kinship and the relationships that bind people to each other and to place. Writing on Māori perspectives on conscious capitalism links this relational thinking to a wider view of stakeholders that includes the environment and future generations (Dell et al., 2022).

Watercare reports “chief to chief” engagement with leaders of the 19 iwi connected to Tāmaki Makaurau and with iwi along the Waikato Awa (Watercare Services Limited, 2025), and says it has moved away from the former Kaitiaki Forum model (Watercare Services Limited, 2026). Direct relationships of this kind fit whanaungatanga better than formal consultation. The limitation is that the evidence is about relationships Watercare reports, not how mana whenua themselves assess them; a stronger evaluation would draw on iwi statements or independent review.

5. Conclusion

Watercare shows credible alignment with both models and with both Māori values, with clear targets and a stated cultural framework. The nested model exposes where the evidence is thinner: ecological limits, emissions pathways and falling community trust. Kaitiakitanga and whanaungatanga give a way to judge relationships and responsibilities that the triple bottom line does not capture. The most defensible recommendation is to report environmental and cultural indicators alongside financial ones and to test them with mana whenua.

Part 2 – Poster content plan (four stakeholder groups)

The poster must stay within 500 words. The plan below shows what each panel should contain. Entries marked “assessment” are analytical judgements, not Watercare statements.

Why these four. Together they cover ownership, cultural authority, social licence and legal limits. Mana whenua and customers are where the largest engagement gaps appear, so the poster should give them the most space and end on one recommendation per group.

About the expert

Dr. Ethan Caldwell is a Strategic Management and Business Analysis Specialist at the University of Auckland, New Zealand, whose profile lists strategic case analyses and corporate strategy assignments, using frameworks such as SWOT, PESTLE and Porter’s Five Forces, aligned with postgraduate marking criteria.

Need help with your own report?

Your organisation, models and sources will differ from this extract. For a management brief like this, see our management assignment help and report writing help pages, or browse more NZ assignment samples. Students in the South Island can also see our Dunedin assignment help page.

References

Dell, K., Houkamau, C., Mika, J., & Newth, J. (2022). Māori perspectives on conscious capitalism. In M. Dion & M. Pava (Eds.), The spirit of conscious capitalism (Ethical Economy, Vol. 63). Springer. https://doi.org/10.1007/978-3-031-10204-2_20

Elkington, J. (1997). Cannibals with forks: The triple bottom line of 21st century business. Capstone.

Giddings, B., Hopwood, B., & O’Brien, G. (2002). Environment, economy and society: Fitting them together into sustainable development. Sustainable Development, 10(4), 187–196. https://doi.org/10.1002/sd.199

Hikuroa, D. (2017). Mātauranga Māori – the ūkaipō of knowledge in New Zealand. Journal of the Royal Society of New Zealand, 47(1), 5–10. https://doi.org/10.1080/03036758.2016.1252407

Purvis, B., Mao, Y., & Robinson, D. (2019). Three pillars of sustainability: In search of conceptual origins. Sustainability Science, 14(3), 681–695. https://doi.org/10.1007/s11625-018-0627-5

Watercare Services Limited. (2025). Annual report 2025. Auckland Council. https://www.aucklandcouncil.govt.nz/content/dam/ac/docs/reports/ccos/watercare-annual-report-2025.pdf

Watercare Services Limited. (2026). Watercare’s Tāmaki Ora: Achieving Māori outcomes (revised April 2026). https://assets.watercare.co.nz/media/Watercare_s_Tamaki_Ora_Achieving_Maori_Outcomes_02ca858f3e.pdf