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Porangahau wastewater treatment plant serves the small community of Pōrangahau in Hawke's Bay, New Zealand. It provides secondary treatment and discharges approximately 95 megalitres annually.
Porangahau Beach wastewater treatment plant serves Te Paerahi in Hawke's Bay, New Zealand. It provides secondary treatment for a small population of 106, discharging treated effluent near the coast.