10/3/12 Module 3 Quiz

1. Fill in the blanks:
Zooplankton is a(n) ______________, and phytoplankton is a(n) ______________

A. Autotroph
B. Heterotroph

2. True or false: The account in Scripture about the Nile becoming blood when God struck Egypt with plagues could have been due to red tide—a red algal bloom of Gymnodinium brevis which can sometimes occur in nutrient-rich water.

3. (Select all that apply) Which of the following is an example of symbiosis?

A. A bird eats a grasshopper
B. A caterpillar chows down on a leaf
C. A protozoa in a termite’s gut digests cellulose for a termite
D. A bird cleans a hippo’s teeth
E. A Venus fly trap digests a fly

4. (Select all that apply) Which of the following is true about malaria?

A. When a mosquito bites a human, they transmit mosquito larvae into the host, which can cause malaria in that human
B. Malaria is passed when a mosquito transfers Plasmodium spores in its salivary glands into a human host
C. If an uninfected mosquito bites an infected human, that mosquito can become infected
D. Plasmodium causes red blood cells to burst
E. Some of the symptoms of malaria are fever, chills, and shaking

5. (Select all that apply) The cilia of a paramecium allow it to move from one place to another; what else does it allow the paramecium to move?

A. Dust out of its eyes
B. Food into its mouth
C. RNA out of its nucleus
D. A food vacuole through its cytoplasm
E. Protein from its Golgi bodies

Answers:

  1. B, A (see p. 85-86)
  2. False: Scripture clearly states that the water in the Nile turned to blood. Even though Red Tide would also be red, algae is certainly not blood! (see pp. 89-90 & On Your Own Question 3.15)
  3. C, D (see p. 78)
  4. B, C, D, and E (see pp. 81-83)
  5. B (see p. 79)

Wells: To Have and To Hold

On November 6, 2010 Criterion Water Labs, LLC attended the Indiana Ground Water Association Conference on Understanding Well Problems.

Mr. Stuart Smith, a Ground Water Science Consultant, presented very important information about wells. Mr. Smith is a hydrogeologist and applied microbiologist. He has over 30 years professional experience in ground water and wells. Two area well drillers that I know attended were:

  • Armstrong Drilling, Inc., (765) 566-3362
  • Ortman Drilling & Water Services, (765) 459-4125

Criterion Water Labs, LLC highly recommend these companies to assist you with your well water needs.

One statement that Mr. Smith made that really stood out was that widespread understanding of the need to care for your teeth was not in practice in America until World War II. Soldiers were issued toothbrushes and information about the health needs of their teeth. Mr. Smith sees a similar awakening of understanding well needs. Your teeth are a blessing not to be taken for granted. So is your well. In general we probably do not think much about the water coming from the tap until it turns colors, starts smelling or stops coming out. There is preventative maintenance that can be done to avoid some major problems and since our ground water supply is connected to ground water of others around us we must take in to account what we dump on the surface and its effect on soil and water underneath. Likewise, we must understand the best that we can what materials we are putting down into a well.

About 80% of the wells in our county are documented, i.e., they have been listed in a directory when they were dug and how deep. Our home well is not, therefore, any work done on it cannot be guaranteed. Sure, it was probably dug when the home was put in but that was before our time in the home and nothing was recorded about it. We are fortunate that we have not had major problems but when the pump went out we became aware very quickly the need for good information.

Freedom to manage your well and therefore your personal water supply may be dependent upon your understanding of your well and your family’s water needs. This is not an overstatement. It is a truth. Ignorance is not bliss. Water is a very, very, very precious commodity. Many countries do not have the access to direct water supplies – clean water supplies in particular – that nearly everyone in America has. I would like to share with you some of the great information I learned at this Indiana Ground Water conference and also what we are seeing in the lab as we test area waters.

The general thought about underground water was that it was “sterile.” Not true!!! Very few water supplies are “sterile.” Maybe the Dead Sea water – maybe. Even the heavily chlorinated water coming in on public water supplies is not sterile. I can show you plates of bacterial growth from public water supply water. Is this bad? Of course not. It just means there is life in the water. Microbiologists are diligently studying what is growing in water and how to better monitor and identify the organisms. Criterion Water Labs, LLC, are certified by the Indiana State Department of Health to test for total coliforms and specifically E. coli in your water. We are also certified to give you a plate number. We can tell you how many heterotrophic bacteria (general bacteria present in water) are in your water supply. Total Coliforms is a general name for a group of bacteria that show up in soils and/or digestive tracts of warmblooded animals. Some of them can make you very sick but most are completely harmless and in fact necessary for normal active breakdown of solids in the soil and the intestines. The HPC count is a quantitative observation of how “clean” a system is – that includes your pipes. Criterion Water Labs, LLC, is looking forward to studying and understanding a wider variety of bacteria groups that are found in area water as another great IUK intern comes on board in January. We have been blessed to have several great interns from IUK already.

At the conference Mr. Smith said that bacteria have been found 3000 ft. below the earth. Glacial sands have abundant biomass and nitrogen. Upheavals over the centuries have introduced organic material deep underground and these materials introduce bacteria to water supplies. There is not much keeping bacteria from moving through the earth. Now, however, it is true that the soils and sands act as fantastic filtering sieves for water as it moves downward but note that cracks exist above and below ground that open up “roadways” for transport. Microbes traveling through these cracks are like “ships in a canal.” The only thing holding them back is that they like to stick to things. They also like to join together and create colonies. The outer surface bacteria in these colonies can take on different shapes and forms as they adjust to different jobs within the colony. It is amazing stuff!!! Just think of it – a million little bacteria working together to survive in a water supply source deep underground or in an up take pipe. They are capable of transferring information and food resources to one another!!!! Don’t let it creep you out. Rejoice and stand amazed at the incredible intricacy of the world God has given us.

Please appreciate your area well drillers and let them help you understand what can be done to insure that your well will stay in great shape for many years to come.

9/19/12 Module 2 Quiz

1. What is the scientific term for “spherical bacteria”?

2. Most bacteria thrive in all but one the following conditions. What is that condition?

A. high nutrient concentrations
B. moderate temperatures
C. darkness
D. dryness
E. community

3. (Select all that apply) When a bacterium divides, its daughter cells have:

A. DNA different from their parent cell, and different from one another
B. DNA different from their parent cell, but the same as one another
C. DNA the same as that of their parent cell, and the same as one another
D. DNA the same as that of their parent cell, but different from one another
E. equal claim to the family inheritance

4. (Select all that apply) When a bacterium is referred to as “aerobic,” this means it requires:

A. sweatpants
B. phosphorous
C. oxygen
D. dihydrogen oxide
E. nitrogen

5. Ship:rudder as cell:_______

A. plasma membrane
B. flagellum
C. capsule
D. pilus
E. cytoplasm

Answers

1. coccus
2. D
3. C, E
4. A, C
5. B

Swimming Pool Opening? We Can Help!

Let us help you with your total coliform and E.coli testing needs. We also do the county-required Heterotrophic Plate Count. This is a tried and true test for monitoring cleanliness of a water system. Heterotrophic bacteria live in water and many of them can be counted after a 48 hour incubation on agar. Pools in our county have to have a count below 200 colony forming units per ml of water. The total coliform and E. coli test indicate the presence or absence of just one viable bacteria in that group per 100 ml sample.

Some mortgage companies are requiring bacteria, nitrate/nitrite, and/or lead testing of well systems. We can help you get all three of these tests for $100. Do it early in your mortgage process so you have the results ready for closing. We will also let you know the action levels that the EPA has set so you can treat for any problems that you might find by comparing your data to the Maximum Contaminant Levels.

Flooding can cause the introduction of bacteria into your well if the wellhead is invaded. If this happens please let us test your water for potential indicator bacteria. These indicator bacteria (total coliforms) are often found with water-borne pathogens. You will want to call a good well-driller and well-service provider like Mr. Ortman if these bacteria are detected. Wells can be chlorinated but you need someone to calculate the volume of your well and use the proper amount of chemical treatment.

Water Disinfection

Some interesting news items about water disinfection here in Indiana:

Chloramines versus Chlorine

June 13, 2011 – “Chloramines produce fewer disinfection by-products (DBPs) than chlorine in water disinfection. Chloramines’ advantages include little or no creation of trihalomethanes, simplicity of use, formation of a long-lasting measurable residual, and a proven history of success. This video educates drinking water professionals about the use of chloramines as a secondary disinfectant following primary disinfection. It explains the basic issues of disinfection by-product formation, DBP regulations, the advantages and drawbacks of chloramines to reduce DBP formation, and central issues to consider in planning and implementing a chloramination system in your treatment train.” Indiana American Water just announced this week that they are making the switch. American Water Works Association has a short video clip at: http://apps.awwa.org/EbusMain/Default.aspx?TabID=55&ProductId=7117 (unfortunately the full clip costs $300) We can get videos like this if enough people would be interested in viewing this kind of material. Please let us know what would be a good time of the week for us to offer something like this.

Our concern with the chloroamine technology, however, is that the byproducts have not been fully investigated. Also, there is a known problem of “nitrification.”
Bree A. Carrico, Francis A. DiGiano, Nancy G. Love, Peter Vikesland, Kartik Chandran, Matt Fiss, and Anna Zaklikowski

Effectiveness of Switching Disinfectants for Nitrification Control

One third of respondents in a survey of U.S. water utilities reported using or planning to use chloramines for secondary disinfection, primarily to maintain a disinfectant residual and minimize formation of disinfection by-products (DBPs). However, nitrification is a problem in chloraminated systems. Nitrification has been controlled via breakpoint chlorination—periodic switching from chloramines to free chlorine—but the consequences of this strategy are not well understood. The authors evaluated the effects of a one-month switch from chloramines to free chlorine. They concluded that disinfectant switching alone will terminate nitrification but is unlikely to provide long-term nitrification control. Systems that have used chloramines for a long time are more likely to have nitrification problems. Cast-iron pipe also might increase nitrification potential. Potential negative effects of disinfectant switching include increased DBP concentrations and periods of low disinfectant residual. These results can help utilities decide whether or how to use disinfectant switching as a nitrification control strategy. For more information, see the American Water Works Association.

There is more than one way to disinfect water!

Calgon Carbon Awarded Two Contracts for Sentinel Systems

Two Indiana cities will install systems at drinking water treatment plants

Calgon Carbon Corp. (June 14, 2011) — Calgon Carbon Corp. announced yesterday that it has been selected by the cities of Indianapolis and Fort Wayne, Ind., to supply Sentinel Ultraviolet (UV) Disinfection Systems at drinking water production plants serving those communities. Indianapolis will install 12 Sentinel 12-in. Systems at its Fall Creek plant to increase protection against Cryptosporidium, Giardia and other surface water pathogens. When installed in winter 2011, the Sentinel Systems will treat up to 44 million gal of drinking water per day. Fort Wayne will install three Chevron 48-in. UV reactors at its Three Rivers water filtration plant as part of a retrofitting project. The new UV reactors, capable of treating up to 72 million gal of water per day, were selected because of their low capital and operating costs. Installation is scheduled for June 2012. Both Sentinel Systems have undergone third-party validation in accordance with the U.S. Environmental Protection Agency’s UV Disinfection Guidance Manual. Both systems feature UV intensity sensors to ensure accurate delivery of UV dose, automatic quartz sleeve cleaning systems and fully automated control systems.

“We are pleased to have been selected to supply our Sentinel disinfection systems to the cities of Indianpolis and Fort Wayne,” said Calgon Carbon Vice President James A. Sullivan. “These awards are indicative of Calgon Carbon’s growing leadership position in the UV disinfection market.