THE BURNED OVER DISTRICT

After enduring 3 million gallons of mine shit being spilled into it, The San Juan River is still showing pollution levels beyond what is safe. It appears that it did not all flush down stream, some still remains in detectable levels probably on the rocks and river bottom.

In August, an accident at the defunct Gold King Mine in southern Colorado released nearly 3 million gallons of wastewater that quickly made its way downstream to the Navajo Nation. Earlier this month, the Environmental Protection Agency published testing data from the San Juan River showing that metal concentrations in the water and sediment had returned to pre-spill levels.

Now independent testing of the San Juan has concluded that claim may be untrue.

A new report provided to Al Jazeera by the nonprofit organization Water Defense shows that chromium, lead, beryllium, nickel and nearly a dozen other metals and chemicals have been detected in the river. The results come at a time when other institutions, such as Texas Tech University and New Mexico State University released similar claims.

“I would say at this point the water is unsafe to use until we have more testing completed,” said Scott Smith, the Chief Technology Officer and Investigator for Water Defense. “We are dealing with known chemicals that are toxic and cancer causing, and we don’t know what’s happening to those chemicals and what’s going on in the crops.”

The EPA declined a request for an interview but stated that it stood by its testing results. The agency also said that it would continue to share data.

Water Defense’s analysis showed two things: Metal levels remain elevated in the San Juan’s riverbed, compared with baseline tests, and water in the San Juan was likely contaminated before the Gold King Mine spill.

“The sediment showed levels of contamination before, but now it’s a hell of a lot worse after this spill,” said Smith.

For instance, testing showed chromium at 4.7 parts per million (ppm) in sediments affected by the spill. In baseline sediments, chromium was measured at 3.7 ppm. The maximum level set by the EPA for chromium in drinking water is 0.01 ppm.

Investigators found the lead concentration in the San Juan jumped from 7.8 to 9.9 ppm. The EPA says any lead contamination in drinking water is unsafe.

What appeared in sediments after the spill, according to Water Defense, were beryllium and nickel, which have been linked to increased risk of cancer and other health problems.

“The baseline sediment readings are cause for worry even before this spill,” said Smith. “With the impacted sediment, it has just raised this to a whole new level of concern that requires immediate action.”

So the new spill was just like the old days, adding more to an already troubled stream bottom. And any solution is going to be long term.