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Rainwater Harvesting

Average rainfall in US cities (Countrystudies.us). Precipitation data for 2,000 cities worldwide is available in this historical database.

Introduction video from Tierra Designs, Texas

Rain water system size calculator (Texas Water Development Board)

System manuals: The Texas Manual on Rainwater Harvesting (PDF), Thomas Jefferson Soil and Water Conservation District's Homeowner’s Manual of Ideas for Harvesting Rainwater (PDF)

Rainwater Harvesting - USA
The Original Rainwater Pillow Georgia	The Original Rainwater Pillow is designed to be stored in your crawl space or under a deck. Sizes from 1,000 gallons up to 40,000 gallons. Sold as a easy to install kit.
Oasis Design California	Rainwater system consulting. System example: Huehuecoyotl Rainwater from seasonal waterfall for household use and hydroelectric power, from roofs for drinking.
Forgotten Rain Arizona, Phoenix	Rainwater Harvesting and Stormwater Reuse.
Southern Arizonz Rain Gutters and Cisterns Arizona, Tucson	Serving Tucson, Green Valley, Vail, Sahuarita, Oro Valley, Marana and surrounding areas. We supply the Tucson area with the highest quality seamless rain gutters and rain water harvesting systems. We are a licensed contractor and a member of the Better Business Bureau.
Technicians For Sustainability Arizona	Environmental Benefits, How it Works, How to Proceed, Project Feasibility, Case Studies.
Four Gates Arizona, Scottsdale	Rain barrels.
Wonderwater California, Mount Shasta	Complete Systems For: Gardens, Residential Homes, Integrated Residential Systems, Commercial Use, Agricultural, Parks, Playgrounds & Campgrounds.
Earthcraft Landscape Design California, Soquel	We offer a full range of services from rainwater harvesting and landscape design to site planning and project management.
Wilson Environmental Landscape Design California, Santa Barbara	An award winning, licensed and insured, full-service design and build company. WELDesign designs and installs custom rainwater catchment and storage systems to precisely meet your property and landscape’s needs.
Rainharvest Company Georgia, Snellville	The RainHarvest System is a unique filtration devide which turns rain water into usable household water, both conserving this precious resource and the environment in the process.
SkyJuice New England Maine, New Hampshire	SkyJuice New England offers simple, inexpensive, community driven water saving methods. By disconnecting a small portion of rooftop runoff from stormwater systems our programs connects individuals to their watershed. Saving water can help protect local watersheds, ground water and surface water quality.
James T. Warring Sons Inc. Maryland	Wood barrels to the nursery industry for planters and decorative accessories. Rainbarrels
Resource Conservation Technologies Maryland, Baltimore	Design and installation of systems. Online rainwater design handbook.
Aaron's Rain Barrels Massachusetts, Leominster	Manufacturer, retailer of rain barrels.
Rainwater Recovery Systems Massachusetts, Waltham	Designs and implements rainwater harvesting systems ranging from small-scale, manually operated systems to large-volume storage systems fully integrated into a facility's outdoor or non-potable water use infrastructure.
New England Rain Barrel Company Massachusetts	The product that we sell is made from recycled 55 gallon plastic barrels. We clean them up, install hose fittings and an insect-proof inlet and put them out for distribution. The idea is that the homeowner places their rain barrel under the downspout from their roof to collect an incredible amount of rainwater ...
RainStay Massachusetts	RainStay, locally owned and operated in Massachusetts, provides the following services for the SmartStorm® Rainwater Recovery System: Expert Site Analysis, System Design, Installation and Maintenance
Soilutions New Mexico, Albuquerque	We strive to turn Albuquerque into the model for urban rainwater harvesting. With an average rainfall of 9”, a 1,000 square foot house can harvest ~5,400 gallons of rainwater a year. You can use this water to grow your own organic food, water your landscape, flush your toilets, wash your clothes, drink, etc….
Desert Rain Systems New Mexico, Santa Fe	Focus exclusively on putting together water catchment systems that are efficient and high performing, while remaining simple (and economical) to install, operate and maintain. Licensed
Santa Fe Permaculture New Mexico, Santa Fe	A landscape consultation and design company started in 1992. Using storm run-off from roofs, roads, patios and natural slopes can be easy—and its worth it! Our clients profit from healthier, more beautiful plants, lower water bills, fewer erosion problems and reduced maintenance costs (in short: increased property values!).
Arid Solutions New Mexico, Albuquerque	Online water conservation store headquartered in New Mexico. Sells a patented, stackable rain barrel for rainwater harvesting and other products for water recycling and conservation.
BRAE North Carolina	BRAE markets complete rainwater management solutions like Matrix D-RainTank™ for underground stormwater detention, infiltration and rainwater harvesting applications, CorGal™ and TimberTanks™ water storage cisterns and TurfCell™ permeable paving.
Rainwater Solutions North Carolina, Raleigh	Provides rainwater harvesting systems for residential and commercial applications. 100% recycled content rain barrels.
Stark Environmental Pennsylvania, Columbia	A full service consultancy specializing in Rainwater Harvesting and Stormwater Management. Self-cleaning filters, from 50 gallon rain barrels to 50,000 gallon tanks, Stark Environmental can provide the technology and knowledge to assemble nearly maintenance-free rainwater harvesting systems.
Spruce Creek Rainsaver Pennsylvania, Warriors Mark	Specializing in rain barrel - gardening water supplies - garden water tools and rain water barrel accessories. Our products range from rain barrels to ph measurement tools. Give your garden and plants the best care possible by purchasing the most attractive and reliable rain barrel on the market today.
Lakota Water Co Texas	We install and service rainwater collection systems for Central Texas communities including Austin, Dripping Springs, Bee Cave, Wimberly, Cedar Park, New Braunfels, Marble Falls, San Marcos, and many others. Call us today to discuss your rainwater needs.
Rainfilters of Texas Texas, Austin	A Factory Authorized Distributor for WISY products. This site will provide information to help you develop your rainwater collection system as well as providing the opportunity to specify and purchase WISY products.
Golden Eagle Landscape Co Texas, Ingram	Passive and active rainwater collection systems.
Texas Rain Texas, Austin	Complete rainwater collection systems.
The Rain Well Texas, Arlington	Rainwater Harvesting & Water Conservation Systems. Now available at The Rain Well: galvanized metal cisterns, poly cisterns, modular cisterns, agricultural tanks, rainwater harvesting tanks, rain barrels, and water storage tanks. Delivery available Nationwide.
Rain Man Waterworks Texas, Dripping Springs	Supplies, Design and Information for Rainwater Harvesting Systems.
Tierra Designs Texas, Denton	Rainwater Harvesting Catchment Installation
Rainwater Collection Texas, Dripping Springs	Here you can find answers to the most frequently asked questions like "How much does a system cost?" ... You can view or download our catalog, a comprehensive list of the stuff it takes to make rainwater collection flow smoothly from tanks, to pumps, to ultraviolet lights.
Innovative Water Solutions Texas, Austin	Innovative Water Solutions is a full-service water conservation planning, design, and system installation company for commercial and residential projects. We specialize in rainwater harvesting and graywater recovery systems. We strive to provide solutions that integrate water conservation with innovative technologies.
Dubberley Landscape Design Texas	Rain gardens for native landscapes.
Barly & Pfeiffer Texas, Austin	Architectural firm integrating rainwater harvesting systems.
SpecAll Products Texas, Austin	Rainwater storage tanks- cisterns, level indicators and downspout filters.
Rainwater Management Solutions Virginia	Rainwater Management Systems in Salem, Virginia, deals with Rainwater harvesting and water management solutions.
NW Dreamscapes	"Cut-in-half" rain barrels, easy to place against a wall! Rain Ready rain water barrels conserve and store rain water.
Seattle Rain Barrels Washington, Seattle	Local supplier of quality, affordable rain barrels in the Seattle area. Downspout extenders etc.
Flotation Services Washington, Seattle	Recycled barrels for rainwater harvesting.
Earth & Water Works Wisconsin, Madison	With a mission to conserve water resources through rain garden development, Earth and Water Works specializes in rain garden and shoreline buffer design, installation and maintenance.
Rainbarrel Rebates - USA
City of Austin Texas	City of Austin water customers (and customers of eligible MUDs) may purchase rainbarrels from Austin Water Conservation at a discounted price of $60 per barrel.
City of Olympia Washington	We have information on where you can get a rain barrel, information on how to retrofit a rain barrel (for do-it-yourselfers), and our most frequently asked questions.
Rainwater Harvesting - Demonstration Sites & Case Studies
Acker Park Arizona	Learn about water conservation options through the application of our newly installed rainwater catchment system.
ZonaGardens Arizona	Landscape design service and B&B. ZonaGardens advocates complete rainwater harvesting design solutions that incorporate desert-adapted plants into designs that store rainwater in the ground and/or in above-ground storage tanks.
Van Asperdt & Goesjes Home Oregon	A rainwater collection and storage system is investigated, focusing on water quality at various points: from roof runoff to an underground concrete cistern. A prototype sand filtration system (designed to improve water quality) is built and then tested. The result is complete removal of suspended solids.
Zilker Park Texas, Austin	The rainwater harvesting system at Zilker Botanical Gardens will benefit not only garden plants, but will help homeowners understand whether or not a rainwater harvesting system is right for them, and which features and types of materials they prefer.
Rainwater Harvesting @ YouTube
Rainwater Commercial	Pro-rainwater harvesting commercial from CSE India
Solutions for Development	Dr. Kent Butler explains the benefits of rainwater harvesting.
Cistern Construction	This is one of four 5500 gallon cisterns being constructed by Innovative Water Solutions for a rainwater collection system in Denton, TX. Rainwater is directed from the buildings roof into these cisterns - the water is then used for irrigation.
Rainwater Harvesting - Canada
Garden Water Saver British Columbia, Richmond	The Garden Watersaver is an automatic rainwater collection system has advantages over other rain water collecting systems. For example: any container that can hold water can become a water reservoir, can be deactivated in seconds during winter or when stored water is not needed.
Rainwater Connection British Columbia, Thetis Island	The Rainwater Collections is active on the West Coast of British Columbia designing and implementing rainwater collection/harvesting systems. Rainwater is a sustainable alternative to well water.
Clean Calgary Alberta, Calgary	Various rainwater barrel models for sale.
Islands Trust Fund British Columbia, Salt Spring Island	Online documented case-study.
Rainwater Harvesting - UK
Rainharvesting Systems	Rainharvesting Systems Ltd is a UK company offering a complete solution to harvesting rainwater.
FreeRain	Rainwater harvesting systems for domestic and commercial applications from Freerain.
StormSaver	Specialising solely in rainwater harvesting solutions and supplying a UK designed and manufactured product has made us a preferred choice for public and private clients again and again.
Sirena Environmental Devon	A Devon based company serving the South West, Sirena Environmental is dedicated to supplying environmental solutions for reducing your demands on the environment.
RainStay Kent	Rainwater Harvesting, collection,recycling & storage systems. Rainwater butts and tanks
Rainwater Storage Solutions Kent	Providing supply and installation services for all types of rain harvesting equipment. Our products range from 203L garden water butts to 200,000L bespoke rain harvesting systems and we always stock a full range of accessories including pumps, filters, taps, hoses and much more. We supply throughout the UK.
Parsec Green Energy	We work directly with our clients who include Architects, Developers and Contractors. Design, supply and installation of complete systems including the internal pipe work to the point of use.
Conder Environmental Solutions	The Conder Rainwater Harvesting System is designed to reduce water costs for homeowners by up to 50% A tank is installed underground near the home with downpipes. Rainwater is screened and filtered before entering the storage tank.
AquaTek Shropshire	Water recycling management. Rain water harvesting and grey water recovery systems. Domestic and commercial applications.
Aquality London	We are specialised in water efficiency technologies especially rainwater harvesting, greywater recycling systems. Our systems and products range from small domestic irrigation systems to large commercial and industrial systems such as airports or stadiums.
3P Technik UK	3P Technik’s policy of continuous innovation means that we can offer the widest choice of components covering all 4 steps in the cleaning of rainwater. If you think we haven’t got what you are after, contact us, as our range is vast and constantly being enhanced.
Envireau Buckinghamshire	Envireau is the name of the rainwater harvesting system designed and built by Klargester. Established in 1965 Klargester has spearheaded the development of rainwater harvesting technology and has a wealth of experience in supplying systems for many applications from domestic properties, residential developments to commercial and local authority applications.
PolyPipe Civils	Rainwater harvesting systems for domestic and industrial applications.
Rainwater Harvesting Equipment - Other countries
Wisy Germany	Storage tanks, filters, rainwater collectors, suction and pressure pumps, ...
Full Tank Australia	Illuminated rainwater storage Lumi™ emphasises colour, shape and light in creating an innovative and sculptural solution using superior quality materials - Incorporates lighting to illuminate gardens, courtyards and decks - Offers an extensive range of saturated colours ...
Rainwater Harvesting - Associations
ARCSA (American Rainwater Catchment Systems Association	ARCSA was founded in Austin, Texas in 1994 to promote rainwater catchment systems in the United States. Membership consists of professionals working in city, state, and federal government, academia, manufacturers and suppliers of rainwater harvesting equipment, consultants, and other interested individuals.
International Rainwater Catchment Systems Association	The International Rainwater Catchment Systems Association (IRCSA) aims to promote and advance rainwater catchment systems technology with respect to planning, development, management, science, technology, research and education worldwide; establish an international forum for scientists, engineers, educators,...
UKRHA - UK Rainwater Harvesting Association UK	The UK Rainwater Harvesting Association (UK-RHA) is a company limited by guarantee, having been formed in 2004 to serve as a focal point for organisations with business interests in the rainwater harvesting industry. They also serve as an enquiry centre for the public, industry and governmental bodies.
fbr - Fachvereinigung Betriebs- und Regenwassernutzung Germany	Germany's Rainwater Harvesting Association.
International Rainwater Harvesting Alliance	RHA’s vision is safe freshwater for sustainable livelihoods and ecosystem conservation in all regions of the world.IRHA’s mission is to promote Rainwater Harvesting, within the context of Integrated Water Resources Management (IWRM), linking local social and economic development with the protection of vital ecosystem
Greater Horn of Africa Rainwater Partnership Africa	A regional network of National Rainwater Associations in the Greater Horn of Africa involved in promotion of Rainwater Harvesting and Management systems and complementary technologies for improving water supply & sanitation, health & nutrition, food security, enterprises creation, environmental management and sustainable livelihoods.
Rainwater Harvesting Implementation Network - RAIN Foundation Netherlands	An international network with the aim to increase access to water for vulnerable sections of society in developing countries - women and children in particular - by collecting and storing rainwater in water tanks and wells.
Southern & Eastern Africa Rainwater Network Africa	Technologies, knowledge database, directory, photogallery, domestic demo, ...
Rainwater Harvesting - Resources
HarvestH2O.com	The online Rainwater Harvesting Community: dedicated to the advancement of sustainable water management practices for individuals, families, communities, and businesses. We share knowledge and experiences in the following ways: advancing specific, common-sense recommendations for water conservation developing a best-practices repository in rainwater harvesting sharing stories, practical tips, cautions and notes of interest ...
Rainwater Harvesting for Drylands Book	by Brad Lancaster. Site has a great link list to rainwater harvesting demonstration sites
Harvesting Rainwater for Landscape Use Study	by University of Arizona: Components, simple and complex systems.
Texas Water Development Board	Rainwater harvesting evaluation report, FAQ's, RWH map of Texas, resources...
The Texas Manual on Rainwater Harvesting Study	by Texas Water Development Board. Rainwater Harvesting System Components, Water Quality and Treatment, Water Balance and System Sizing, Rainwater Harvesting Guidelines, Cost Estimation, Financial and Other Incentives, References and Case Studies.
DIY rainbarrel (pdf)	Instructions for Making a Rain Barrel.
Save the Rain UK	Save the Rain™ is campaigning for rainwater harvesting to be compulsory in all new builds and for grants to be available for rainwater harvesting equipment for homes now - just like grants for loft insulation.
Warwick Univ - Rainwater UK	The main internal publications of the DTU are Working Papers, Technical Releases and Research Notes. Most DTU publications are available here for download in a number of formats and hard copies of Working Papers are available free on request to the DTU.
Rainwater Club India	Rain water club has particular interest in rainwater harvesting, eco friendly architecture, water recycling, reuse and waste water treatment for houses, industries, institutions and apartments.
Rainwater Harvesting.org India	India and rainwater harvesting potential. Directory: CSE is compiling a nationwide database of people involved in urban rainwater harvesting.
Lanka Rainwater Harvesting Forum Sri Lanka	Forum aims to identify existing rain water harvesting practices in Sri Lanka. Research and develop further techniques for collection of rain water. Promote the application of rain water for domestic purposes through information, communication, awareness raising
Domestic Roof Water Harvesting Research Programme Univ. of Warwick, UK	Research for application in developing world. Technology, styles, sizing, tank performance calculator, health issues, resources, discussion list.
The Rainwater Harvesting eTool Kit	The course is designed to give a background knowledge of rainwater harvesting to all those interested. It is intended for people working in NGOs and governments who think that rainwater harvesting could be used within their work.
Stormwater
Sustainable Stormwater	This website was developed to provide a central location for articles, websites, projects, images, and anything else we can find related to sustainable storm water.
Filterra	The Filterra Stormwater Bioretention Filtration System harnesses the power of nature to capture, cycle and immobilize pollutants to treat urban runoff. For effective stormwater management, the combination of landscape vegetation and a specially designed filter media allows bacteria, metals, nutrients and total suspended solids (TSS) to be removed naturally.
StormwaterAuthority	StormwaterAuthority is a place where specifying engineers, contractors, developers, site owners and regulators can learn and share information. It’s a place to research best management practices and regulations. A place with the latest news on stormwater management and treatment.


Rainwater Harvesting - USA - Free Listings
Aquabarrel Maryland, Gaithersburg	Simple, superior rain barrel design from refurbished barrels. Aquabarrel’s™ patent pending design features oversized overflow port and hose outlet at the lowest point on barrel. Promotional video on Youtube
High Desert Rain Catchment Arizona, Prescott	High Desert Rain Catchment consults, designs and installs rainwater harvesting and greywater systems.
Rainwater Harvesting Florida, Orlando	Installation & design for rainwater harvesting systems for residential, commercial and agricultural in the state of Florida. Water conservation products.
Gulfstream Irrigation North Carolina, Raleigh	Authorized irrigation installer specializing in rainwater irrigation systems in Raleigh, Cary, Apex, and Wake Forest, NC. Offering new installations and retrofits to existing sprinkler systems.
Two Drips North Carolina, Raleigh	The bigger better rain barrel, 275 gallon rain water harvesting system, better designed rain harvesting that is truly functional.