Brazil France Germany India Indonesia Iraq South Africa
 
 
Sign up for our
free e-newsletter.





Case Studies
E-Newsletter
News
Resources
Water Management Associations
 
Years After Accidental Fish Kill, Wapato Lake to Get Algae Treatment Again
Nine years after a botched chemical treatment to get rid of algae at Wapato Lake massacred its fish, Metro Parks is preparing to try it again.

The 34-acre lake, in a pocket of South Tacoma surrounded by homes, highways and businesses, is prone to blooms of toxic blue-green algae. The Tacoma-Pierce County Health Department has raised alerts or closed the lake 10 times since 2013. 

In 2008, with conditions that made Wapato among the state’s most toxic lakes — and a danger to people and pets who splashed in it — Metro Parks tried remedying this by using an alum treatment. The alum binds with the phosphorous and settles on the water, which keeps algae on the surface from using the phosphorous as a nutrieunt.

Unfortunately tens of thousands of gallons of an incorrect mix of chemicals were dumped into the lake from tanker trucks.  The lake got so acidic from the treatment that hundreds of fish died.

A postmortem found that too much alum went in and too little of the buffer chemical to bring down the acidity was added.

 
Click for the full article
 


About Us Categories From The Gallery   News Updates News Updates

Our Company
Case Studies
Products
Site Map

Resources/Tools
Parts/Service
International

Boat Ban to Stop the Spread of Hydrilla - A surface water use restriction which bans the use of boats in Davis Stream is effective immediately and will run through ice formation. Next spring, the departments will jointly consider whether to reissue the restriction. Under the order, no watercraft may enter or travel this reach of Davis Stream except in emergency situations or when the environmental department ad endorsed volunteers are doing survey or removal work related to the hydrilla infestation.


© 2010 Copyright Aquarius Systems. All Rights Reserved. info@aquarius-systems.com   |   (262) 392-2162