Worldwide wastewater treatment observatory · 
New Zealand
Aguas SB Observatory · public data to understand water
WWTP Diamond Harbour
The year refers to the inventory or source; it does not establish an individual observation date or current operation. Source note (original text): Supplement S1.10: 317 of 323 records, six lacked coordinates.
New Zealand · official identifier HW:52796
1,167reported population served (people) (2019) · 147th of 317
HydroWASTE v1.0 / New Zealand · official identifier HW:52796 · reported size 1,167 reported population served (people) · reported treatment: Advanced · data year 2019. 147th of 317 records with reported size in the inventory of New Zealand; 0.03 % of the sum of those 317 records in people served (sum of records, not national capacity); nearest inventoried plant at 1.4 km · 2 within 10 km. Reported data with their source; estimates are not measurements of the plant.
Aguas SB does not manage this wastewater treatment plant.
WHAT THE DATA REPORT
Reported data scientific inventory · 2019
| Treatment | Advanced · reported levels |
|---|---|
| Reported coordinates | -43.6200, 172.7200 position validation in the source: medium what it means |
| Source and year | HydroWASTE v1.0 / New Zealand · dataset record |
REGULATORY REFERENCES
Referencia normativa: New Zealand
Regulatory framework of New Zealand. Individual applicability is not determined in this profile.
NEARBY PLANTS
Nearby wastewater treatment plants
| Plant | Distance | reported population served (people) | Treatment |
|---|---|---|---|
| Lyttelton | 1.4 km | 3,500 | Advanced |
| Governors Bay | 5.6 km | 1,050 | Advanced |
| Christchurch | 10.1 km | 349,662 | Advanced |
| Claremont STP Avonie Pl | 21.6 km | 143 | Advanced |
| Duvauchelle | 22.8 km | 322 | Advanced |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Diamond Harbour report?
Reported size: 1,167 reported population served (people). Units are retained without conversion.
What treatment is reported?
Treatment Advanced. Nitrogen, phosphorus and UV are shown only when explicitly reported.
SOURCE AND CORRECTIONS
Source
reported data · HydroWASTE v1.0 / New Zealand · data 2019 · edition 2019 · source licence: CC BY 4.0 · JSON for this plant · suggest a correction · catalogue 2026-11-06. Reported data, not a current inspection; no compliance judgements.