Firefighters stopped a pool resurfacing company from dumping wastewater down a storm drain Saturday near Punahou.

The incident occurred about 10 a.m. near Central Union Church at the intersection of Beretania and Punahou streets, said Honolulu Fire Department Capt. David Jenkins.

He said a concerned citizen called the Fire Department about the pool resurfacing company cleaning their equipment and dumping a 55-gallon garbage can filled with blue-colored water and debris into the storm drain.

Firefighters arrived and stopped the company’s actions, then checked the area for hazards to people or property. None were found, but the department notified the Coast Guard about the possible environmental impact.

Jenkins said firefighters also checked nearby storm drains for any blockages caused by the illegal dumping.

He said the pool company was doing work at one of the nearby high rises and the garbage can contained wastewater from washing out their equipment. He did not release the name of the company.

It is against the law to dump anything into a storm drain because the water flows out to streams and the ocean.

“The only thing that goes down a storm drain is rainwater,” Jenkins said. “You shouldn’t be washing your equipment down a storm drain.”