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

Wastewater treatment plants in New Zealand

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317 inventory records · HydroWASTE v1.0 / New Zealand

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

317 results

CompareNameNative sizeYear
KakanuiHW:52763542 population served2019
KurowHW:52774542 population served2019
TakapauHW:52878534 population served2019
HuntervilleHW:52883513 population served2019
RiversdaleHW:52744505 population served2019
RussellHW:53022500 population served2019
Meremere WWTPHW:52967499 population served2019
TuaiHW:52912485 population served2019
Kaka PointHW:52726473 population served2019
LumsdenHW:52751465 population served2019
ObanHW:52716434 population served2019
Motunau BeachHW:52807434 population served2019
KaiwakaHW:53002429 population served2019
Waitakaruru WWTPHW:52974428 population served2019
OtematataHW:52777427 population served2019
OmaramaHW:52778427 population served2019
WaihouHW:52958426 population served2019
WarringtonHW:52752425 population served2019
TapaweraHW:52831423 population served2019
KapongaHW:52900420 population served2019
MiltonHW:52738382 population served2019
RAtanaHW:52877366 population served2019
Whiritoa WWTPHW:52969362 population served2019
BalcluthaHW:52729337 population served2019
Hanmer SpringsHW:52816326 population served2019
OmakauHW:52765324 population served2019
DuvauchelleHW:52792322 population served2019
East Coast_TaipaHW:53028320 population served2019
MiddlemarchHW:52757318 population served2019
FranzHW:52802318 population served2019
Cooks BeachHW:52986318 population served2019
CollingwoodHW:52849317 population served2019
PorangahauHW:52862317 population served2019
ArapuniHW:52936317 population served2019
NorsewoodHW:52874312 population served2019
OwakaHW:52722309 population served2019
Waiuku Williams RoadHW:52976308 population served2019
OhaiHW:52740307 population served2019
NightcapsHW:52739299 population served2019
Castle Hill STPHW:52805294 population served2019
KaitangataHW:52728293 population served2019
PiopioHW:52921270 population served2019
BennydaleHW:52919265 population served2019
TapanuiHW:52742257 population served2019
National ParkHW:52903250 population served2019
FieldingHW:52867236 population served2019
KerikeriHW:53024230 population served2019
MowhanauHW:52885226 population served2019
Gorge RoadHW:52720218 population served2019
Matangi WWTPHW:52948218 population served2019
TahunaHW:52962216 population served2019
Paeroa WWTPHW:52966214 population served2019
MoerakiHW:52761213 population served2019
TurangiHW:52906213 population served2019
St ArnaudHW:52825211 population served2019
MangawekaHW:52887211 population served2019
Wai inuHW:52886210 population served2019
PongaroaHW:52852208 population served2019
Little WanganuiHW:52830203 population served2019
Himatangi BeachHW:52860193 population served2019
Iveagh Bay Te KingaHW:52815192 population served2019
Glinks GullyHW:53005189 population served2019
MarybankHW:52882183 population served2019
TutukakaHW:53014180 population served2019
Upper Selwyn Huts STPHW:52793160 population served2019
PortlandHW:53011160 population served2019
FoxHW:52801159 population served2019
HalcombeHW:52872155 population served2019
TokanuiHW:52718147 population served2019
BrownsHW:52736145 population served2019
BalfourHW:52748145 population served2019
Claremont STP Avonie PlHW:52799143 population served2019
Lake Ferry WWTPHW:52829135 population served2019
Waihau BayHW:52954135 population served2019
HawardenHW:52811130 population served2019
Lake Coleridge STPHW:52803124 population served2019
Tauwhare WWTPHW:52950116 population served2019
NasebyHW:52770110 population served2019
CheviotHW:52812109 population served2019
LRVHW:52758108 population served2019
Kingseat Buchanan RoadHW:52981108 population served2019
Tikao BayHW:52788107 population served2019
MotuoapaHW:52907107 population served2019
Acacia BayHW:52915107 population served2019
Waihi WWTPHW:52964107 population served2019
OakuraHW:53020107 population served2019
SeacliffHW:52753106 population served2019
HaastHW:52785106 population served2019
Porangahau BeachHW:52863106 population served2019
WhareroaHW:52911106 population served2019
Waitarere WWTPHW:52853105 population served2019
PaihiaHW:53023105 population served2019
Loburn LeaHW:52929103 population served2019
Owhanake Ocean View road Waiheke IslandHW:52989103 population served2019
KoitiataHW:52875100 population served2019
ClintonHW:5273295 population served2019
DuntroonHW:5277281 population served2019
Lake Ohau Alpine VillageHW:5278081 population served2019
Te MahoeHW:5293281 population served2019
Awahuri EDSHW:5286473 population served2019

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.

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