Water features

One of the rooms in the house that hasn’t been mentioned often—yet gets daily use—is the bathroom. With the bathroom being the top water user in the house, the water features installed here are helping conserve water in several ways.

The New Norris House was built with a rainwater cistern and purification system which delivers harvested and treated rainwater to the toilet tank (and to the clothes washer and outside hose bibs as well). Systems like this aren’t common in the U.S., and the system here is being used under a special permit. According to the EPA, one toilet can use 27% of a household’s daily water, and older toilets use between 3.5 to 7 gallons of water per flush. It makes sense to use rainwater instead of fresh water for flushing given those numbers, since fresh water is a finite resource and harvested rainwater, a naturally replenished resource, works just as well.

rainwater cistern (gray container) and purification system (blue cylinders)

The toilet also has the water saving feature of a low flow/dual flush system (Kohler Persuade model). Either .8 or 1.6 gallons are used per flush depending on which button is pressed. This means the rainwater isn’t used up quite as quickly, but if we lived in a house with standard plumbing, this toilet would be using less pure drinking water for flushing as well. Because I’m living in a house where the rainwater is harvested, treated, and reused, I’ve become more aware of water usage and potential ways to adjust no matter where we live next.

Another bathroom water feature that’s probably more common is low flow fixtures. The shower head and sink faucet are both low flow. “Low flow? I don’t like the sound of that.” Admittedly, neither of us are huge fans of the lack of water pressure with the low flow shower head, but because it can cut water consumption by half, it also makes sense to have it installed in the bathroom. And, to save energy on heating costs, the water is heated with a solar water heating and tankless system.

Besides the water features, the design of the bathroom is worth noting. The same design principles used in the house were applied to the bathroom as well; it’s small but makes efficient use of the space. The room is almost 10’ long, with the stall shower at one end, the sink in the middle, and the toilet at the other end. At its widest on the shower end, the room is 3.5’ wide and at its narrowest on the toilet end is 2.5’ wide. Like the bedroom, it has a pocket door to maximize space. For storage, there is a medicine cabinet, a cabinet under the sink, small shelves on the side of the sink, and a shelving unit above the toilet.

Although it’s a small room, I’ve learned quite a bit about conserving water and energy from living in the house. You can also learn more about our project at www.thenewnorrishouse.com.

Electricity for all

Last week, an afternoon thunderstorm knocked the power out at the house. I was working at the time, and although my laptop could run on battery for a short time, I depend on an Internet connection to connect to a remote work computer. The outage was short—only an hour—but it’s obvious how electricity is a necessity nowadays, and how easy it is to take for granted something that we depend on daily. I did some reading on the history of electricity in our area and discovered that less than 100 years ago, east Tennessee had no electricity.

The lack of electricity changed with the advent of the Tennessee Valley Authority (TVA), which is the nation’s largest public power provider. It was created as part of the New Deal in 1933 under President Franklin Roosevelt; it was one of the programs designed to bring the country out of the Great Depression, and aimed to address environmental, economic, and technological issues.

11/21/1934, Jersey City Journal; cartoon of President Roosevelt (source)

In the early 1900s, the Tennessee Valley was suffering: land was being farmed too hard and soil was eroding/depleting, crop yields were falling, farm incomes were shrinking, and 30% of the population was affected by malaria. Enter the TVA. Dams were built to generate energy from the region’s rivers, and with the introduction of electric lights, appliances, fertilizers, and new farming techniques, east Tennessee was modernized. Electricity made life easier and farms became more productive.

rural electrification:  before and after (source)

However, the TVA and Norris Dam were not without controversy. Around 15,000 families were displaced from their land and homes in the Norris Lake area. Racial discrimination persisted; many African Americans living in the region were available for work, but were not hired by the TVA. Local power companies felt the federal government should not be involved in private development and escalated a lawsuit to the Supreme Court. Despite the controversies, TVA dams were completed, and 75 years later in Norris, we’re using even more gadgets dependent upon electricity via the power of nature.

TVA dams in red (source)

For additional information, see the TVA website and the New Deal Network.

Rainwater System

Our rainwater harvesting, treatment, and distribution system was put together by the BRAE rainwater group out of North Carolina. As part of our ongoing partnership, BRAE released this promotional video a few days ago describing the rainwater system as installed in the house.

Enjoy!

BRAE Rainwater Harvesting
www.thenewnorrishouse.com

Phase IV Water Monitoring

Now that our water systems are up and running, it's time to begin the monitoring and analysis process. My task as a graduate assistant is to formalize a sampling and analysis protocol for testing water quality on both the supply side and the waste water side.

A little about me: My name is Valerie Friedmann and I am in my third year of studies as a graduate student in landscape architecture at UTK. My role in the New Norris House project began as a landscape architecture student consultant in the spring of 2010. I began by refining the conceptual landscape design, and continued working on the project to see it through the construction and installation phases. Last summer, I worked with a group of UTK students to finalize construction documents, order materials, and construct the landscape elements. Now that our landscape system is online with the home's rainwater overflow and greywater discharge systems, I am very excited to determine the efficacy of the landscape systems in mediating the quality of the greywater and the flow, velocity, and erosion potential of the rainwater.

Back to the monitoring process:

On the water supply side, our design includes a rainwater harvesting system that collects rainwater from the roof of the home and stores it in a 400 gallon cistern. The water is filtered and treated with UV and used for non-potable sources in the home. We have a temporary permit to allow rainwater to be used in the home, and we are testing to compare the rainwater composition pre- and post-treatment to the City of Norris municipal water supply.

Our goal is 01) to learn if the rainwater quality we are collecting and treating would produce water that is safe for use as a potable source and 02) how the water quality compares to the city's water quality. The City of Norris revised its ordinances to allow the systems to work and be plumbed as such in the New Norris Home while UTK owns the home. Results may allow extension of the permit to a future owner, and perhaps other town residents. A second test we are interested in concerns the greywater. We have designed and installed a greywater treatment garden, and we would like to sample the greywater as it leaves the house and at various distances from where it enters the greywater treatment bed. The goal here is to see if pollutants from the greywater are successfully being mediated in the bed. We currently have a temporary State Operation Permit from the Tennessee Department of Environment and Conservation (TDEC) that allows us to collect, treat and release greywater in the beds; this will expire after three years or when UTK sells the property. TDEC has been very supportive and is interested in the results of the study and its potential to effect future state policies.

Image Credit: Ken McCown

We are currently working with TDEC officials and UTK professors from the Department of Biosystems Engineering to develop our testing protocol for both rainwater and greywater analysis. I will be posting updates on our process and results throughout the semester, so stay tuned!

Mini-Term, week 1 Recap

The New Norris mini-term course (5 days a week intensive course for 3 weeks) is under way and made considerable progress this past week.

On the bio-retention bed front, the five beds have now been planted full of native water loving goodness! The greywater bed is piped in, but can't be turned on until city ordinances allowing it have passed in June. The rainwater beds (beds 2-5) have all been planted, but won't be piped in until next week. Currently our rainwater is being diverted into a pile of gravel in the yard, but once the system is all put together all excess rainwater will eventually make it's way to through these beds!

The vegetable beds have also begun, though are progressing slower than expected. Thanks to Blake French for doing the primary excavating last weekend and to Mark Whitson (neighbor) for helping with manual excavation. We have dug quite a hole in the ground (to say the least) and the 200-gallon garden cistern fits perfectly. We are excited to see it put to use soon!

Many thanks to all parties involved! We solider on!