RCW 54.16.170: Apportionment of cost of improvement.

When an improvement is ordered hereunder, payment for which shall be made in part from assessments against property specially benefited, not more than fifty percent of the cost thereof shall ever be borne by the entire public utility district, nor shall any sum be contributed by it to any improvement acquired or constructed with or by any other body, exceed such amount, unless a majority of the electors of the district consent to or ratify the making of such expenditure.