Haw. Rev. Stat. § 340E-4.5: Tampering with public water systems, penalties.

(a) Any person who tampers with a public water system, attempts to tamper with a public water system, or threatens to tamper with a public water system shall be imprisoned for not more than five years and fined an amount not exceeding $500,000. If the person is an individual, the fine shall not exceed $250,000.

(b) Any person who tampers, attempts to tamper, or threatens to tamper with a public water system shall be civilly penalized not more than $50,000.

(c) For the purposes of this section, the term "tamper" shall mean:

(1) To introduce a contaminant into a public water system with the intention of harming persons; or

(2) To otherwise interfere with the operation of a public water system with the intention of harming persons.