Happy New Year!

The year 2011 is drawing to a close, and a short reflection back on our first few months in the New Norris House reveals what we learned and what happened during that time. Similar to any new residence, there was a period of familiarizing ourselves to the house and the systems inside it. Some things in the house were brand new to us (the heating and cooling units, the rainwater cisterns, the solar hot water, and the small refrigerator and freezer), while others were familiar but required an adjustment (low flow faucets and shower, cabinet and storage configurations, and the furniture).

rainwater cistern in backyard (on flickr)

The house was ready for occupancy on July 1, and the finishing touches were completed throughout July and August. We set up our post office box and internet service, and enjoyed meeting people who came by for house tours over the 4th of July weekend. Students wrapped up their work on the yard and rainwater garden, and seeded the lawn. Kinks with fluctuating water temperature in the shower were worked out, and the solar hot water heater was installed. Railings on the deck and entry were leveled and secured. Temperature and humidity sensors were installed throughout the house. We became familiar with the air conditioning unit manual as we figured out the ideal way to run the systems in the summer heat.

the house in december (on flickr)

The official ribbon cutting ceremony for the house was in August, and hundreds of people attended and toured the house. Also that month, there were multiple media events to promote the finished project within the Norris and Knoxville areas, and at the University of Tennessee as well. Professors Tricia Stuth and Bob French, along with the student researchers and other student participants, have been a pleasure to work with during this experience. We've appreciated their patience with us while we went through learning about the house.

In the next six months, we’re looking forward to some new activities, including starting a garden in the raised beds in the backyard and exploring more of the Norris area. Until then, we wish you a Happy New Year!

It's raining, it's pouring

The past few weeks have been busy with end of the semester activities—final papers, tests, and presentations. The fall semester is over and now it’s time to enjoy the break and the holidays before classes begin again in January. There’s no snow on the ground yet, and with a forecast of rain and temperatures in the low 50s for the next five days, no chance for a snowy Christmas this year.

Speaking of rain, this fall was especially rainy. Not only did we observe many days with rain, but I recorded rainfall in a rain gauge for my fall semester Bionformatics class (bioinformatics, also known as environmental informatics, includes the collecting, linking, storage, organization, analysis, delivery, and application of biological data and information). One of our projects required us to record rainfall at our residence on a daily basis, and at the end of the semester, prepare a report with rainfall data, analysis, metadata, a data management plan, and conclusions.

my rain gauge, holding 3" of rain; the student research self emptying bucket on pole 

I installed my rain gauge on the side of the electrical/garbage wooden enclosure. It’s a wedge shaped plastic gauge, and is easy to remove for readings. The student researchers are also monitoring rainfall, but they are using a self emptying bucket with a sensor that sends measurements electronically. Their white bucket is installed on the utility pole, and can be seen in the background.

The total number of days in my study was 85, and 28% of the days monitored received rainfall. September 5th, the first day of recorded rainfall, happened to be during Tropical Storm Lee, and 6.10” of rain fell that day. September topped out at 9.86”. October’s total was lower at 4.92”, but November had much more rain than usual at 9.06”. The chart below compares the rainfall I recorded to the monthly normals (30 year averages based on the period of 1971-2000).

In the course of the project, I discovered the Tennessee Valley Authority (TVA) Region Precipitation website. The TVA has rain gauges throughout the region and uses the data to make water management decisions. I compared my data taken at the house with the measurements taken at the Norris Dam, and the rainfall amounts were very close.

In light of all the fall rain, the rainwater cistern for the house (it provides water for the clothes washer and toilet tank) was most likely never empty. It’s great to be living in a house where the rainwater is being reused and also in constant supply.

Phase IV Water Supply Sampling

After several months of research and continued efforts from TDEC and the college of Biosystems engineering we finally collected our first set of water supply samples! We have been working to create a custom list of contaminants to test for based on our source, rainwater, and our goal of providing results to TDEC that may lead to revised regulations concerning the potability of rainwater in Tennessee. On December 6 we met with Tony Wilkerson from the Norris Water Commission, and he guided us on the proper methods for collecting the samples. We were instructed to wear gloves when collecting the samples that will be used to test for bacteria. Furthermore, Tony showed us how to remove the fixtures from the faucets we were collecting water from. Bacteria and other contaminants may collect inside fixtures like faucet aerators and the vacuum breakers found on hose bibs. These fixtures must be removed and the water must be allowed to run for several minutes before the sample can be taken.

We removed the vacuum breaker from the hose bib before sampling.

We are testing water from 4 locations. The first location is untreated rainwater from the roof. Fortunately our first day of collecting coincided with a rain event, and we were able to collect roof water as it streamed out of the downspout.

Collecting a stream of rainwater from the roof.

The second location is the untreated rainwater that is stored in the cistern. We installed a valve to sample the water from this location.

Preparing to sample untreated rainwater from the cistern.

The third location we sampled is the treated rainwater from the hose bib. Finally, we sampled the municipal water supply from the bathroom sink.

The samples were clearly labeled and delivered to the UT Water Quality Lab.

The samples were taken to the UT lab for this first round of monthly testing. However, we will also have analysis performed by a state certified drinking water lab on a seasonal basis. By the end of 2012 we will have a detailed report to submit to TDEC on our pre- and post-treatment rainwater quality findings. Hopefully this could lead to a new, sustainable water source for Tennesseans.