Water Use Rules in Idaho (2026)
9 rules on the books across Idaho, 7 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Turf Replacement Rebates
Rebate programs paying residents to replace turf with drought-tolerant landscaping, including per-square-foot incentives and approved plant lists.
Boise
Some RestrictionsNew Boise developments must cap water-hungry lawn grass like Kentucky Bluegrass at 33% of landscaped area and ban…
Read full rule →Meridian
Some RestrictionsMeridian's elective water-conserving landscape design option caps lawn and turf at 50% of total landscaped area, using…
Read full rule →Recycled Water Rules
Where purple-pipe recycled water is required for irrigation, dual-plumbing requirements for new construction, and cross-connection-control rules.
Ada County
Some RestrictionsPlanned community developments in unincorporated Ada County must provide centralized wastewater treatment with reuse…
Read full rule →Boise
Some RestrictionsBoise requires any reclaimed or reuse water system to be designed, permitted, and inspected under state rules, with…
Read full rule →Meridian
Some RestrictionsMeridian's landscaping code requires new development to irrigate with nonpotable or reuse water instead of potable…
Read full rule →Leak Reporting Duty
Property owner's duty to report and repair water leaks within a set window once notified, plus how utilities issue leak-adjustment credits and impose penalties.
Caldwell
Some RestrictionsCaldwell makes property owners responsible for maintaining and repairing service pipes and fixtures on their property…
Read full rule →Nampa
Some RestrictionsNampa water users must fix leaky pipes or valves within 60 days of a city notice, or face responsibility for all…
Read full rule →Pocatello
Some RestrictionsPocatello water customers who discover an underground pipe or fixture leak can get a bill credit only if they act fast…
Read full rule →Twin Falls
Light RestrictionsIn the City of Twin Falls, Idaho, section 7-8-5(C) makes it unlawful for any person to waste water through imperfect…
Read full rule →