Environment & Conservation in Mason County
From Hood Canal's oxygen crisis to record salmon returns, Mason County's environment demands careful stewardship that balances conservation with the needs of a growing community.
Our Natural Heritage
Mason County's identity is inseparable from its natural environment.
Mason County's natural environment is among its greatest assets. From the waters of Hood Canal and the Puget Sound to the forests of the Olympic foothills, our landscape defines who we are as a community. It supports fishing, shellfish harvesting, timber, recreation, tourism, and the quality of life that draws people to live here. Protecting this environment is not just an ecological priority — it's an economic and cultural imperative.
But Mason County's environment faces serious challenges. Hood Canal suffers from chronic low dissolved oxygen, a condition that has worsened dramatically over decades. Dissolved oxygen levels have plummeted from 5-6 mg/L in the 1950s to less than 0.2 mg/L in some areas — levels far too low to support marine life. This decline threatens shellfish beds, fish populations, and the marine ecosystem that communities along Hood Canal depend on.
There are also reasons for hope. The Union River saw record salmon returns of 12,021 summer chum — evidence that sustained investment in habitat restoration works. Mason County has secured $8.2 million in salmon recovery grants, funding critical projects that restore fish passage, improve water quality, and protect habitat. The Department of Natural Resources manages over 56,000 acres of trust land in the county, providing both timber revenue and essential ecological services.
<0.2
mg/L dissolved O₂ in Hood Canal
12,021
Record chum salmon returns
$8.2M
Salmon recovery grants
56,000+
Acres of DNR trust land
Environmental Challenges Facing Mason County
Hood Canal Dissolved Oxygen Crisis
Hood Canal's dissolved oxygen levels have dropped catastrophically, from 5-6 mg/L in the 1950s to less than 0.2 mg/L in the most severely affected areas. At these levels, fish, shellfish, and other marine organisms cannot survive. The causes are complex: Hood Canal's natural fjord-like geography limits water circulation, while human contributions including failing septic systems, stormwater runoff, and nutrient pollution from development worsen the problem. Climate change and warming waters further reduce dissolved oxygen levels, creating a compounding crisis that threatens the entire marine ecosystem.
Septic System Pollution
With over 26,000 onsite septic systems in Mason County, many of them aging and failing, septic pollution is one of the largest human-caused contributors to water quality degradation. Failing systems release nitrogen, bacteria, and other contaminants into groundwater and surface waters, contributing to the dissolved oxygen problem in Hood Canal, contaminating shellfish growing areas, and threatening drinking water supplies. Addressing this challenge requires both helping homeowners maintain and replace systems and expanding centralized sewer service where feasible.
Salmon Recovery and Habitat Protection
While record returns of 12,021 summer chum to the Union River are encouraging, many salmon populations remain threatened or endangered. Habitat loss from development, degraded water quality, fish passage barriers, and climate change all challenge recovery efforts. The $8.2 million in salmon recovery grants represents significant investment, but sustaining these gains requires ongoing commitment to habitat protection, restoration, and monitoring. Salmon are not just an environmental indicator — they are central to the cultural and economic life of Mason County and its tribal communities.
Balancing Timber Revenue and Conservation
DNR manages over 56,000 acres of trust land in Mason County, generating approximately $4.3 million annually in timber revenue that supports schools, roads, and essential services. Evolving state environmental policies — including carbon sequestration goals and habitat protections — may reduce timber harvests. Finding the right balance between sustainable harvest that funds local services and conservation that protects ecological values is one of the most consequential decisions facing Mason County governance.
Karen's Approach to Environmental Stewardship
Protecting our natural resources while supporting our community's needs.
Karen believes environmental stewardship and economic prosperity are not opposing forces — they are complementary priorities that require thoughtful, balanced leadership. Our environment supports our economy, our health, and our way of life. Degrading it undermines all three. At the same time, environmental policies must be practical and responsive to the real needs of families and communities in Mason County.
Address Hood Canal Water Quality
Karen will work to prioritize actions that reduce human contributions to Hood Canal's dissolved oxygen crisis. This includes addressing failing septic systems, improving stormwater management, and partnering with state agencies, tribal nations, and regional organizations working on Hood Canal restoration. She supports science-based solutions that target the most impactful sources of pollution.
Continue Salmon Recovery Investment
Karen supports continued aggressive pursuit of salmon recovery funding and implementation of projects that restore habitat, remove fish passage barriers, and improve water quality. The $8.2 million in grants already secured demonstrates what is possible, and Karen will work to ensure Mason County remains a leader in salmon recovery efforts.
Tackle the Septic Challenge
Karen will work to develop comprehensive strategies for addressing the county's 26,000+ onsite septic systems, including financial assistance programs for homeowners who need to repair or replace failing systems, expanded sewer service in high-priority areas, and improved monitoring and enforcement. This is both an environmental and infrastructure priority that demands coordinated action.
Advocate for Balanced Trust Land Management
Karen will work to ensure Mason County has a strong voice in state-level decisions about DNR trust land management. She supports sustainable forestry practices that maintain revenue for local services while protecting ecological values, and she will advocate for the county to be fairly compensated if state policy changes reduce timber harvests.
Strengthen Tribal Partnerships
Karen recognizes that tribal nations are essential partners in environmental stewardship. She will work to strengthen government-to-government relationships with tribal nations on issues from salmon recovery to water quality to forest management, leveraging shared goals and traditional ecological knowledge to achieve better outcomes for the entire community.
Frequently Asked Questions
Common questions about environmental issues in Mason County.
Related Issues
Environmental health connects to infrastructure, growth, and quality of life.
Protect Mason County's Natural Heritage
Karen Sullivan is committed to responsible environmental stewardship that protects the waterways, forests, and wildlife that make Mason County special. Join the campaign for balanced conservation.