Graywater in Austin, Texas Dr. Lauren Ross, Ph.D.,P.E ., Glenrose Engineering, Inc. Austin’s Water Supply: Lakeway Park on Lake Travis. Austin’s Water Supply: Lake Buchannan. Austin’s Water Supply: Lake Buchannan and Lake Travis Combined. - PowerPoint PPT Presentation
PowerPoint Presentation
Graywater in Austin, TexasDr. Lauren Ross, Ph.D.,P.E., Glenrose
Engineering, Inc.
Austins Water Supply: Lakeway Park on Lake Travis
Austins Water Supply: Lake Buchannan
Austins Water Supply: Lake Buchannan and Lake Travis
Combined685,000 acre-feet in storage, enough to fulfill LCRA firm
water contracts for 1.3 years
No more than 400 gallons per day
Only private residences
Alternative wastewater system must be available
Pipe must be purple and labeled
Austin Gray Water Design Requirements
9Austin Gray Water Design RequirementsMust be distributed under
at least 2 inches of soil, mulch, or gravel
A plumbing license for pressure systems or more than 250 gallons
per day
A surge tank
10Austin Gray Water Design ProhibitionsNo kitchen sinks,
toilets, or diaper laundry water
No use for toilet flushing
No discharge to ponds, fountains, waterfalls, or creeks
No use for vegetable gardens with root crops or where edible
portions touch the ground
11Austin Gray Water Design ProhibitionsNo ponding or runoff
Not on slopes exceeding 3:1
No use over outcrop areas of the Edwards or Georgetown
Limestone
12Soil and Plant HealthNo chlorine products
No sodium chloride-softened water
No powered soaps or detergents
13Soil and Plant HealthUse cautiously: whiteners, softeners,
enzymatic products
Acid-loving plants will struggle
14DesignExample
15Lauren Ross, Ph. D., P.E.Glenrose Engineering,
[email protected]
Robert StefaniCity of Austin Water Utility512-974-9302
