ID S1370

Requires subdivisions with 10 or more lots smaller than 5 acres to be supplied by a shared well or public water system, with integration into municipal providers' systems when located within or near a municipal service area.

Clarifies that subdivisions located within irrigation entity boundaries must either transfer water rights and assessment obligations away from the subdivision lands or provide an approved underground water delivery system to individual lots.

Limits liability for non-compliance with water delivery requirements to actual costs required to bring each subdivision lot into compliance, not to exceed $1,500 per lot, with purchasers able to elect exclusion or system installation.

Requires local governing boards to consider the effect on source, quantity, and quality of ground water when amending, repealing, or adopting comprehensive plans.

Declares an emergency and makes the act effective July 1, 2024.