Mysterious green foam extruded from the American sewer cap

Bluffdale residents, Utah, in the United States were shocked when they saw a substance like a green soap foam extruded on the manhole on July 21.

According to Live Science, city officials initially suggested that the mysterious substance was linked to the phenomenon of blooming toxic algae affecting the Lake Utah area, and informed the Salt Lake County Health Department - the city. 32 km from Bluffdale, to investigate.

Although the official result has not been announced, according to Nicholas Rupp, the Health Department official, the cause may come from treating moss in an adjacent canal and not related to the phenomenon of algae in Utah lake. .

The mysterious green foam layer extruded from the manhole cover.(Photo: Bluffdale City / Facebook).

Chemicals in the process of moss treatment also have the ability to foam.

"The foam has nothing to do with algae, it is an irrigation cleaning activity, which is basically a moss, " said Donna Spangler, communications director of the Utah Department of Environmental Quality (DEQ).

The canal is connected to the Jordan River, and the Lake Utah is being invaded by algae. The algae grow at the peak of time, covering up to 90% of the lake surface and crept into the surrounding tributaries, according to Spangler.

Utah Lake has been blocked by fears that cyanobacteria can release toxins that affect the brain, nervous system and liver function of the person in contact with it, said Dr. Joseph Miner, executive director. The Utah Department of Health said in a statement on July 15.

The cause of algal blooms is a combination of high temperature, low water level and high phosphorus concentration, which helps algae grow quickly. Nearly 80% of phosphorus in Lake Utah comes from nearby wastewater treatment plants, according to DEQ.

"It comes from our waste, people in the bathroom , " Spangler said.