World wastewater treatment plant observatory · data as reported by each inventory

Wastewater treatment plants in New Zealand

317 inventory records · HydroWASTE v1.0 / New Zealand

Data years: 2019. The inventory date does not establish current operation.

317 results

Name	Native size	Year
Mangere Island RoadHW:52983	997,242 population served	2019
ChristchurchHW:52800	349,662 population served	2019
Pukekohe Friedlander RoadHW:52971	250,000 population served	2019
Moa PointHW:52832	158,047 population served	2019
Seaview WWTPHW:52837	147,404 population served	2019
Pukete Wastewater Treatment PlantHW:52952	141,401 population served	2019
TahunaHW:52747	87,708 population served	2019
Totara Road WWTPHW:52859	82,817 population served	2019
Porirua Wastewater Treatment PlantHW:52842	74,250 population served	2019
Chapel StreetHW:52955	67,200 population served	2019
East CliveHW:52891	65,994 population served	2019
Rotorua Wastewater Treatment PlantHW:52931	60,000 population served	2019
Clifton Wastewater Treatment PlantHW:52721	53,814 population served	2019
New Plymouth Wastewater Treatment PlantHW:52905	52,312 population served	2019
Bells IslandHW:52834	49,393 population served	2019
WhangareiHW:53012	46,515 population served	2019
OtakiHW:52848	39,500 population served	2019
Whanganui UrbanHW:52881	39,055 population served	2019
Te MaungaHW:52953	36,500 population served	2019
WhatuwhiwhiHW:53031	31,660 population served	2019
WesternHW:52833	31,048 population served	2019
Eastern DistrictsHW:52804	30,802 population served	2019
ESSS STP PinesHW:52797	30,000 population served	2019
Nelson Wastewater Treatment PlantHW:52839	29,893 population served	2019
BlenheimHW:52828	29,590 population served	2019
DomesticHW:52779	29,000 population served	2019
Bunnythorpe Oxidation PondHW:52866	27,173 population served	2019
OmoriHW:52908	23,010 population served	2019
Wellsford 18km south of WellsfordHW:53001	20,896 population served	2019
Levin WWTP DataHW:52851	20,278 population served	2019
Cambridge WWTPHW:52944	20,100 population served	2019
Homebush Wastewater Treatment PlantHW:52715	19,233 population served	2019
Ashburton over 2 sitesHW:52786	18,750 population served	2019
Te Awamutu WWTPHW:52941	17,250 population served	2019
TokoroaHW:52928	16,397 population served	2019
Cheltenham EDSHW:52871	16,067 population served	2019
WhakatAneHW:52942	15,812 population served	2019
ShotoverHW:52768	15,175 population served	2019
OamaruHW:52769	14,856 population served	2019
Green IslandHW:52746	11,675 population served	2019
MosgielHW:52750	11,434 population served	2019
Army Bay Whangaparaoa PeninsulaHW:52996	11,090 population served	2019
HaweraHW:52892	9,970 population served	2019
ThamesHW:52979	8,819 population served	2019
Gore WWTPHW:52737	8,563 population served	2019
MotuekaHW:52843	8,301 population served	2019
Huntly WWTPHW:52960	7,696 population served	2019
Te PukeHW:52946	7,676 population served	2019
ParaparaumuHW:52846	7,304 population served	2019
WhangamataHW:52975	7,055 population served	2019
Waihi BeachHW:52963	6,766 population served	2019
Ngaruawahia WWTPHW:52957	6,636 population served	2019
PauanuiHW:52982	6,614 population served	2019
WhitiangaHW:52988	6,614 population served	2019
MorrinsvilleHW:52956	6,485 population served	2019
MatamataHW:52945	6,375 population served	2019
KaikoheHW:53017	6,150 population served	2019
HikumutuHW:52910	5,862 population served	2019
DannevirkeHW:52868	5,697 population served	2019
Stratford Wastewater Treatment PlantHW:52902	5,697 population served	2019
MartonHW:52873	5,255 population served	2019
Turua WWTPHW:52972	5,180 population served	2019
Beachlands Okaroro RoadHW:52985	5,142 population served	2019
CartertonHW:52844	5,063 population served	2019
AlexandraHW:52762	5,056 population served	2019
Dargaville WWTPHW:53009	4,995 population served	2019
KatikatiHW:52959	4,928 population served	2019
Te KuitiHW:52925	4,910 population served	2019
KawakawaHW:53021	4,832 population served	2019
PictonHW:52835	4,798 population served	2019
HokitikaHW:52813	4,771 population served	2019
WestportHW:52826	4,620 population served	2019
Ngatea WWTPHW:52970	4,518 population served	2019
KaeoHW:53027	4,503 population served	2019
Te ArohaHW:52961	4,287 population served	2019
OpononiHW:53016	4,283 population served	2019
TaupoHW:52916	4,273 population served	2019
WanakaHW:52773	4,272 population served	2019
WaipukurauHW:52879	4,269 population served	2019
OpotikiHW:52937	4,182 population served	2019
Helensville Mount Rex HelensvilleHW:52995	4,139 population served	2019
WairoaHW:52904	4,107 population served	2019
PutAruruHW:52938	4,099 population served	2019
Greymouth Preston Rd and Johnson StHW:52818	4,071 population served	2019
Rosedale Albany North ShoreHW:52993	4,032 population served	2019
Waimate WWTPHW:52775	3,697 population served	2019
Waiwera Weranui RdHW:52997	3,632 population served	2019
LytteltonHW:52798	3,500 population served	2019
CromwellHW:52766	3,398 population served	2019
The Oxidation PondsHW:52822	3,372 population served	2019
Ellesmere STP LeestonHW:52791	3,304 population served	2019
Raglan WWTPHW:52947	3,258 population served	2019
Te AnauHW:52759	2,938 population served	2019
MethvenHW:52794	2,926 population served	2019
Otorohanga Wastewater Treatment PlantHW:52930	2,886 population served	2019
OhopeHW:52939	2,850 population served	2019
Foxton Beach WWTPHW:52858	2,837 population served	2019
PahiatuaHW:52857	2,797 population served	2019
RuakakaHW:53010	2,780 population served	2019
MatarangiHW:52992	2,756 population served	2019

Regulatory context

Partial review. This is not an exhaustive review of applicable law.

New Zealand: standards and resource consent

Partial documentary review; human legal review pending. The first national standards took effect on 19 December 2025, with corrections from 17 August 2026. They cover public networks through regional consent conditions. Overflows and bypasses have a deferred timetable. Second-tranche odour and metals proposals are not treated as enacted law.

Confirm public-network status, receiving environment, consent and each standard's transition rules.
Outside the standards' scope, the Resource Management Act consenting regime still needs review.

Taumata Arowai · wastewater standards y modificacionesOfficial guidance · Redes públicas; implementación por condiciones de resource consent regional

References reviewed: 2026-11-06. Individual applicability: undetermined. This profile does not establish authorization or compliance.