Requires certain group A public water systems and certain other water systems to develop and submit to the department of health a hazard mitigation plan.

Authorizes the department of health to share pertinent information about water systems' natural and human-caused disaster preparedness with the capital budget committee and other appropriate committees of the legislature in order to allow the state to make wise allocation and prioritization decisions about investments in water system preparedness and infrastructure improvements.

Exempts from disclosure under the public records act, hazard mitigation plans and related reports filed with the department of health by a public water system.