Frequently Asked Questions

Why should i test my water ?

There are many reasons why you might want to test your water. You may have a specific concern, such as a change in taste or odor, or there may have been a recent environmental incident. Whatever the reason, we at AAVANIRA BIOTECH can administer the appropriate test for your specific needs.

How often should I test my water ?

We suggest regular analysis of your water to keep informed of your water condition. Most experts on well water suggest annual testing to ensure it hasn’t changed. And while public water is usually safe at its source, old water distribution systems and plumbing systems can contaminate your water. Regular testing ensures top quality water.

How do I know which test to choose ?

Our test packages detect commonly found contaminants, and is usually sufficient when there are no concerns, but depending on your particular concerns, you may want to administer another test. Visit our Environmental Tests, or our Other Tests page for a full description. If you have any questions, please contact us to speak with one of our lab experts.

Where should I take my water sample ?

We at AAVANIRA BIOTECH collect your water sample by our sampling team if you need it. If you do sampling of water on your own: Samples are best taken from the area from which people drink the most water-usually the kitchen. Remove any mixers or purifiers from the tap you plan to use, leave the aerator if that’s all there is and let cold water run for about 5 minutes to flush standing water in the pipes. WATER SAMPLING

What kind of container should I use for my water sample ?

Use a clean – glass or plastic bottle for chemical tests & sterile bottle for microbiological testing. Please contact our lab experts for this if you have any doubt. Fill the container slowly to eliminate air bubbles (air bubbles that occur after the container is closed do not affect sample), and use caution not to contaminate the inside of the container or the lid. Secure the lid tightly, and deliver by hand, or by overnight or second-day mail. We advise that you contact us for sterile sample bottles, we will have them shipped to you immediately an order is placed.

How much water do I need for testing ?

About 2 L of water is adequate for most chemical tests whereas 100 ml is sufficient for microbiological testing.

How do I get my sample to AAVANIRA BIOTECH ?

You can hand deliver your sample to our lab, or send it to us via overnight or second day delivery. In special cases, overnight or same day delivery may be required. You will have to fill up RFT (Request for testing) form & submit it along with sample.WATER SAMPLING

Do I need to keep my water sample cold during shipment ?

Only in special cases is cold shipping advisable. Check with the lab if you have a concern in this area.

How long does it take to get my results ?

In most cases, we will have your report prepared in seven business days. Reports for samples arriving after 12 PM will be considered for reporting on eighth business day. Depending on the specific requirements, we will let you know when to expect results when you deliver the samples.

How do I view my report ?

We can e-mail you scanned copy of your report, the original is mailed normally after getting full payment.

When will my report be mailed ?

Your report will be mailed on the business day following the day it is prepared.

Why does my water smell like rotten eggs (sulfur) ?

This complaint is most often caused by microorganisms growing in your hot water tank. That can happen when the temperature of your hot water is low or the organisms are coming from the incoming water.

Why does my water smell swampy ?

We find that microorganisms are typically the cause for odours.

Why do I have orange or red/brown stains on my washing machine, dishwasher, toilet and other plumbing fixtures ?

The reason(s) could be various naturally occurring elements such as Iron.

Why do I have blue green stains on my tub, toilet and other plumbing fixtures ?

The reason(s) could be various naturally occurring elements such as Copper.

Why do I have a white powdery substance on my ice cubes and/or ice maker ?

The reason(s) could be various naturally occurring elements such as Calcium & magnesium.

Why does my laundry have black or gray stains ?

The reason(s) could be various naturally occurring elements such as manganese.

I'm concerned about septic leaking into my well. What analysis do I need to do ?

We will test for Total Coliform, Fecal / E. coli, Nitrate, Nitrite, Ammonia.

What is Hardness or Hard water and how does it affect my drinking water?

Hardness is a term used to measure the presence of calcium and/or magnesium in water along with other elements. Hard water is not dangerous, but can cause white spots on glasses washed in your dishwasher, poor soap foaming and plumbing deposits, which will eventually restrict water flow.

How to interpret the results of coliforms by multiple tube technique ?

From MPN table

What levels are considered safe to drink ?

The Indian Drinking Water Guidelines has been formulated in order to provide advice on the acceptable limits for drinking water. For more details, please refer to this fact sheet. is.10500.2012 (IS10500: 2012) published by the BIS

What is relation between Hardness & Alkalinity ?

In real sense there is no relation as such.

When limestone dissolves in water, carbonate and bicarbonate ions are released.

Alkalinity (the concentration of carbonates and bicarbonates in water along with other salts) is a measure of the buffering capacity of water to resist change in pH.

Hardness comes from the other part of the calcium carbonate molecule…the calcium. Some rocks have magnesium carbonate, and the magnesium and calcium ions that are released when these rocks dissolve which contribute to hardness of the water. Hardness also counts for other dibasic cations.

It’s easy to get confused about the difference between alkalinity and hardness however, there are some salts dissolved in water such as; o Sodium carbonates that result in soft, yet alkaline water o Calcium sulfate that result in hard, yet poorly buffered water

It all goes back to the geology of the area that strongly influences natural water quality.

What is relation between pH & Alkalinity ?

Total alkalinity consists of all the alkaline chemicals in the water, specially carbonates, bicarbonates and hydroxides.

At a pH of 7.2-7.6, most of the carbonate ions are in the bicarbonate form to provide buffering.

At high pH conditions, too much carbonate forms, calcium ions precipitate causing cloudy water or scale.

At low pH conditions, all of the carbonate ions are converted to bicarbonates. No calcium carbonate is formed and water becomes aggressive.

What are thermotolernet coliforms ? Fecal coliforms & Thermotolerant coliforms are same or not ?

Parameter wise Fecal coliforms & Thermotolerant coliforms are same.

Are you using controls for clean room monitoring ?

Aavanira is using controls for monitoring i.e. Positive control Negative control & Transport control.

Can < 2 /100 ml be considered as absent ?

Yes, we can’t mention absence of microbes in any sample.

What should be the Frequency of Monitoring ?

Yearly or Half yearly as per requirement.

What are the limits for sound level monitoring ?

Area Category of Area Day Time Limits dB(A)Leq Night Time Limits dB(A)Leq
A Industrial Area <75 <70
B Commercial Area <65 <55
C Residential Area <55 <45
D Silence Zone <50 <40