Five years ago this week, I sat glued to the TV watching the horrific aftermath of Hurricane Katrina. Four years ago this week, I left the business I co-founded and headed down the path of sustainability. The first didn’t cause the second, but it certainly played a role.

Within five months of leaving my business, I visited New Orleans twice. The first time to see for myself what Katrina had wrought and the second to help gut flooded homes with a work crew from here in Portland, Ore.

Today, the images of Katrina and the outrage I felt at our country’s shameful response to the suffering in New Orleans and the Gulf Coast are never far away.

For me, Katrina presented the human face of an unsustainable future and put the social in sustainability.

Less than a year after the storm, Al Gore raised my consciousness of climate change with his “An Inconvenient Truth.” As powerful as his message was, I knew when I moved my work into sustainability, Katrina wouldn’t let me forget the inconvenient truth of social inequity.

Climate change threatens to make matters worse by hitting those least able to deal with its consequences. But human-caused global warming wasn’t the issue in New Orleans. It was human-enabled neglect, whether it was the levee system, the evacuation plans, the people left behind as the storm struck or the needs of those trying to reclaim their homes and lives months and years later.

Inextricably linked

Environmental and social responsibility are inextricably linked. We can’t be satisfied with an ecologically pristine world where human inequality and injustice are allowed to flourish. Nor a world where justice applies to humans alone.

This is why the triple bottom line in business is so important. Business is a balancing act among financial, social and environmental responsibilities. Even if I believed the purpose of business is to create profits, which I don’t, I wouldn’t be able to ignore “how” those profits were made. Profits are essential to any business, sustainable or not. But if they’re consistently made while harming the environment or stakeholders (such as employees, customers, local residents, suppliers), then the business deserves any public wrath that comes it way.

Social sustainability lags environmental sustainability in business practice. Deloitte says this is due primarily to the absence of “a highly visible, well-established set of metrics for social sustainability” compared to environmental sustainability.

I also frequently hear comments from businesspeople about their struggles to define what social sustainability means for their organizations. And my non-exhaustive web search for a definition turned up little. Lacking a concrete, generally accepted definition, businesses are apt to give social sustainability more lip service than serious attention.

Beyond lip service

Yes, metrics are useful for holding your business accountable and for gauging and celebrating progress. And it helps to align your social responsibility initiatives with your core business objectives, as Harvard’s Michael Porter and others argue, “to produce profits and social benefits rather than profits or social benefits.”

I also think it’s possible to over-think things. More important is to take action now, even if just small steps, to create positive social impact. Because the opportunities for businesses to make a difference mount by the day. The Great Recession has taken a hurricane-like toll across much of the country. As I write this, fears of a double-dip recession are widespread.

Creating jobs sounds like the best social sustainability strategy for any business today. But ultimately that’s not enough. The US economy was humming when Katrina hit. The storm showed that at its heart social sustainability must be about fairness and compassion, hope and optimism, concern and resolve. In good times or bad, those are qualities that can always be in abundant supply.