Monthly Archives: April 2012

Water Operator Certification Exams: Top Ten Wrong Answers

May 19 is the date for the next Water Treatment Operator certification exam here in California.  That means you have three weeks left!  How do you get ready? We offer several online courses here at MOST to get you ready …
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Water Supply Update: Yosemite

What a difference a year makes!  Last year we experienced record precipitation in much of California; this year we’ve been praying for rain!  Here at MOST, we like to give you first-hand accounts of the water supply situation in California, …
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Water Main Breaks: May the Force Be With You!

Main breaks always make for a bad day at the water company.  You’re going to get wet and muddy, but that’s part of the job of a Distribution Operator almost every day.  No, it’s more than that.  Main breaks can …
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Ozone and Bromine

Here’s another inquiry from a Subscriber:  “I have a hot tub.  The hot tub has an “ozone generator” which creates a steady stream of small bubbles through the pool.  The recommended treatment system is bromine, which I am maintaining according …
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Tier II Violation

Buried in the “Public Notices” portion of my local newspaper, I found a notice from my local water agency.  Its title was “Important Information About Your Drinking Water.”  The subtitle stated that the “Agency Did Not Meet Treatment Requirement (Turbidity).”  …
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Biochemical Oxygen Demand Questions

I receive e-mails from folks every day, asking about different water quality/water treatment/ environmental issues.  I guess they have learned where they can find MOST definitive answers!  (I suppose there are other explanations, too.)  Here’s the latest: I am an …
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Water Supply Update

It’s been a wacky few years for water supply in California.  After a string of dry years, last year we had record precipitation, coupled with a mild, wet Spring, and the result was a significant increase in water stored in …
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Sludge Pumping, Part Two

Today we will be walking through a sample calculation for sludge pumping, as a followup to yesterday’s post.  We noted that we need at least four items of information to do this calculation: influent and effluent solids levels, sludge pumping …
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Sludge Pumping

Sedimentation is one of the most widely used treatment processes in water and wastewater treatment, as well as in many other industries.  It works because it is so simple: density works!  That is, denser materials will sink in a column …
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