City of Dallas EEI Water Conservation study

City of Dallas EEI Water Conservation StudyGwendolyn MatthewsDavid PecinaSarah ValeroBrandon Turner

Ways to Conserve WaterTake shorter showersTurn off the water while brushing your teethWater your yard before 10 AM and after 6 PMWater twice a week according to your addressDo not water during any form of precipitationMaintain sprinkler systems

GlossaryDISD - Dallas Independent School District

EEI(Environmental Education Initiative) - a K-12th grade school and community outreach program funded by the City of Dallas and administered by the Science Education Research Laboratory (SERL) at the University of North Texas.

G.I.S. (Geographic Information Systems) a tool used to visualize, question, analyze, interpret, and understand data to reveal relationships, patterns, and trends.

ZCTA(Zip Code Tabulation Area) an area established by the Census in order to collect and report data. ZCTAs are similar to Zip Codes.

Research BoundariesZip Code MapZCTA MapEstablished by the post office in 1970s to make addressing easier.Established by the census to help collect data.

Census collects data in blocks, so ZCTA captures data in individual blocks. Zips do not follow those blocks. 4City of Dallas Outline: ZCTA

OverviewSummary of previous year2012 Research planResultsNext stepsIn the FieldTrainingG.I.S. Learning ExperiencesWastewater/water treatment plants

Summary of Previous Year (2011)Reevaluated research areas based on three years of water usage dataBuilt maps using G.I.S. software representing the research areasPresented results of water data comparisons

Research PurposeOverall Goal:Through this study, we aim to measure the effects of education on public behavior in relation to water consumption.Steps to Reach Our Goal:Attempt to define a research area.Which areas to conduct the intervention and why?Through our analyses this summer, we attempt to define two research areas establishing a control and an area to permeate with education.

VariablesIrrigation OrdinanceMarketing Price of WaterPrecipitationTemperatureIncomeNumber of housing unitsPopulationGeographic LocationEducation

Price of Water2008 - .0014 per gallon2009 - .0015 per gallon2010 - .0015 per gallon2011 - .0016 per gallon2012 - .0017 per gallon

Irrigation OrdinanceMarketing

Precipitation

Website: water.weather.gov/precip/download.php

Obtained from: National Weather ServiceTarget Research Areas

Precipitation & Target Research Area

TemperatureTemperature is held as a constant due to its geographic location similarities.

http://www.cpc.ncep.noaa.gov/products/tanal/temp_analyses.php15Variables ConstantsIrrigation OrdinanceMarketing Price of WaterPrecipitationTemperatureIncomeNumber of housing unitsPopulationGeographic LocationEducation

Irrigation ordinance & marketing are constant due to its availability to all of Dallas.16Development of ZCTA GroupsCriteria used for selectionPresence of a public elementary school Number of K-5 students served by EEI from 2006-2012Population in each ZCTA

Three groups based on percent of population servedGroup A 0% Group B 0% < x < 2% Group C 2%

We are interested in comparing areas in which we have taught the most and the leastStatistics for Groups A, B, & CPopulation (Kruskal-Wallis One Way ANOVA on Ranks)

p= 0.004Pairwise Multiple Comparison: Dunns MethodB vs A - p0.05).

Area 1Area 2n33mean sd$39,831 $8,741.04$35,475 $1,707.63Variables ConstantsIncomeGeographic LocationEducationMarketing Irrigation OrdinancePrice of WaterTemperatureRainfallNumber of housing unitsPopulation

Irrigation ordinance & marketing are constant due to its availability to all of Dallas.26ZCTA Quadrants

Plotted Research Areas

Research Area 1 Percentage of entire areas population served:< 2%Research Areas with ZCTAs of Interests

Population(t-test)

p= 0.291

Statistics for Research Areas 1 and 2Housing Units (t-test)

p= 0.335

Area 1Area 2n44Mean SD20,281 9,254.4835,980 25,485.97Income(t-test)

p= 0.330Area 1Area 2n44Mean SD6,835 2,491.5610,520 6,568.27Area 1Area 2n44Mean SD$32,402 $4,438.56$28,096 $6,799.81Research Areas 1 and 2 are not statistically different in regards to population, housing units, or income (p>0.05, t-test). Variables ConstantsGeographic LocationEducation

Marketing Irrigation OrdinancePrice of WaterTemperaturePrecipitationNumber of housing unitsPopulationIncome

Irrigation ordinance & marketing are constant due to its availability to all of Dallas.32City of Dallas Outline: ZCTA

Research Area with Schools

Research Area with Water Data

Research Area 1

Research Area 2

OverlappingResearch Area 2> 2% of population served

Results: Water UsageResearch Area 1< 2% of population served

Area 2n359,040Mean SD(gallons per month)7,115 8,783.10Area 1n163,156Mean SD(gallons per month)7,204 8,005.57Average monthly water usage in research Areas 1 and 2 are statistically different (p