At the intersection of Sid Snyder Avenue and Water Street sits Washington’s Capitol Campus. Our name reflects our focus on state policy at the center of decision-making.

What We Do

• Government Affairs & Advocacy

• Strategy & Positioning

• Regulatory Navigation

• Expertise in Energy & Climate Policy

As the Principal Lobbyist at Water Street Public Affairs, Isaac Kastama delivers comprehensive government relations, public policy, and strategic communications services to clients with interests in Washington State. With more than a decade of advocacy experience, Isaac is recognized for his command of the legislative process, rigorous policy analysis and ability to align diverse interests toward solutions. Isaac has played a pivotal role in shaping Washington’s landmark clean energy and climate laws, including the Clean Energy Transformation Act, Clean Fuels Standard, and Climate Commitment Act. His record extends to successful outcomes for clients in financial services, technology, natural resources, manufacturing, housing, and medical industries. He has managed and advised both issue campaigns and political races, bringing practical campaign experience to his policy and advocacy work. Water Street assembles and works with high-caliber teams to deliver on the largest campaigns.

When a policy challenge feels too complex, the call is simple: “Call Kastama.”