Worldwide wastewater treatment observatory · 
New Zealand
Aguas SB Observatory · public data to understand water
WWTP Ashburton over 2 sites
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:52786
18,750reported population served (people) (2019) · 33rd of 317
HydroWASTE v1.0 / New Zealand · official identifier HW:52786 · reported size 18,750 reported population served (people) · reported treatment: Secondary · data year 2019. 33rd of 317 records with reported size in the inventory of New Zealand; 0.50 % of the sum of those 317 records in people served (sum of records, not national capacity); nearest inventoried plant at 29.6 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 | Secondary · reported levels |
|---|---|
| Reported coordinates | -43.9400, 171.7590 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 |
|---|---|---|---|
| Rakaia | 29.6 km | 1,100 | Secondary |
| Methven | 33.7 km | 2,926 | Secondary |
| Ellesmere STP Leeston | 48.1 km | 3,304 | Secondary |
| ESSS STP Pines | 58.5 km | 30,000 | Advanced |
| Upper Selwyn Huts STP | 59.7 km | 160 | Primary |
Distances are between reported coordinates; proximity does not establish a hydraulic connection.
QUESTIONS
Frequently asked questions about this plant
What capacity does WWTP Ashburton over 2 sites report?
Reported size: 18,750 reported population served (people). Units are retained without conversion.
What treatment is reported?
Treatment Secondary. 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.