Auckland- Air Rite LtdClevedon
- Water Control LtdEdmonton
- Wedeco AG Water TechnologyMangere
Bay of Plenty- Contamination Control TechnologiesGreerton
Canterbury- Water Systems Treatment Specialists LtdSydenham
- Bailey Tanks LtdAvondale
Hawke's Bay- Eco Waste Water RecyclingClive
Northland- Earth-LabKensington
Southland- Agricultural Consulting ServicesMakarewa
- Bailey Tanks LtdAvondale
- Kleenvac ServicesNewfield
Taranaki- C & O PumpingBell Block
- Innovative Water SolutionsBell Block
Wellington- Acewater Treatment LtdRaumati South
- AquapureTawa
- Dwr Engineering LtdIsland Bay
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