New Drinking Water COC for Coliform Bacteria Available

by | Apr 2, 2021 | Drinking Water, Resources, Water Analyses

We’ve updated our Drinking Water COC/Submittal Form for Coliform Bacteria. You can download it off of our  Resources page.

 

 

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What does Cation/Anion Balance Mean?

Introduction to Cation/Anion Balance (CA Balance) Water that is potable (drinkable) should be electrically neutral.  This is determined by taking into account results from the following analytical testing: pH, conductivity, total dissolved solids, and other analytical...

What’s the difference between accuracy and precision?

Have you ever wondered what the difference between accuracy and precision is? The classic example is this: I shoot five arrows from a hundred yards and they land either in or just outside of the bullseye.  The consensus from the gallery will be that I am a very...

Understanding Control Charts

What are control charts? Control charts are a visual depiction of ongoing data points that various statistics are applied to.  The EPA used to require a laboratory to adjust its spike acceptance recovery percentage based upon how spikes were recovered over time...

How Low Can You Go – Well No Lower Than The MDL

There is always confusion on how low a lab can go when it comes to what their instruments can detect.  The EPA and TNI came together and changed how Method Detection Limits (MDL) are established for an instrument or group of instruments. They wanted to account for the...

Significant Figures Use by Laboratories

What determines the amount of numbers you see on your report? Each test that we do has a level of sensitivity associated with it.  Tests that you can do by visual inspection have the lowest sensitivity and are usually reported in whole numbers in a range of say 1 to...

The Argument on “Total” Metals

Why is there still an argument about which digestion method should be reported as “total” metals? When you’re looking at an old QAPP, permit or analytical report, you might have noticed that there were different listings for how the metals were to be identified and...

Exciting changes: a new location

After 16 years in our current location, we a relocating our Coeur d'Alene laboratory service to our Kellogg location and establishing a new sample drop-off location in Hayden. Here are some important dates to keep in mind: March 18, 2021: The last day to drop samples...

What to Do With a Result Above Your Permit Limit

When people come to SVL Analytical, they’re often looking for data to show that they’re in compliance with the applicable regulations or permits. What happens when the data you get back isn’t in compliance?  That can be a stressful situation and we want to help...

Reading your Report

If you’re not familiar with the format and terminology, your sample’s analytical report may be confusing. Here are some explanations to get you started.

My water tastes funny, what should I test for?

There are many reasons for household water to have an unusual odor or taste.