County flags Terrace Heights water limits; Zone 4 development could require $8'10M
County staff said Terrace Heights Zones 1'3 can absorb roughly 130 additional ERUs, but Zone 4 lacks wells and distribution and would need an estimated $8'10 million to serve future subdivisions; officials identified $2 million of intermediate upgrades and recommended pursuing state and federal grants and the CHIP program.
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Yakima County engineers and utilities staff told commissioners that the Terrace Heights water system is divided into four pressure zones and that available capacity is driven by wells, storage, pump capacity, pipe sizes and fire-flow requirements. Public Services Director David Haws and Utilities Manager Sanjay Barik said Zones 1'3 could accommodate roughly 130 additional equivalent residential units (ERUs), allocated on a first-come, first-served basis, while Zone 4 currently lacks the infrastructure to provide service.
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