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Electricity, natural gas, and water flowing into buildings through utility connections, and wastewater and exhaust gases flowing out of buildings, are some of the most tangible links to understanding a building’s environmental impact. Paying more attention to these flows can lead to big reductions in resources consumed and pollutants sent downstream.

Division 33 includes metering and submetering equipment for water and natural gas—electrical metering is covered in Division 26: Electrical. Targeted metering of energy and water consumption is an important first step toward reducing usage.

Also included are rainwater harvesting and storage equipment. Rainwater harvesting systems can offset, and in some cases eliminate, a building’s reliance on conventional sources of potable water. A variety of cisterns and tanks, as well as filtration and first-flush systems, are available for in sizes ranging from tens to thousands of gallons. These systems also reduce rainwater runoff by capturing and storing rainwater onsite.

Other systems that detain, direct, control and treat stormwater are also covered here. These systems protect downstream environments from pollutants carried by stormwater from parking lots and other paved areas to surface water during rain events. They can also help avert downstream flooding and increase aquifer recharge. Infiltration trenches, porous pavement, and bio-filtration systems are lower maintenance options that should be considered whenever possible—those are listed under Exterior Improvements.

Reducing reliance on centralized sewage systems that use water to move waste from buildings to energy-intensive treatment facilities saves both water and energy. GreenSpec lists a number of onsite treatment options suitable for neighborhoods or large facilities. In addition to water and energy savings, these systems allow for innovative onsite reuse of treated water as well as nutrient recovery from the waste stream. Another option to consider for achieving these energy and water savings are composting toilets and graywater systems, listed in Plumbing.

Electricity, natural gas, and water flowing into buildings through utility connections, and wastewater and exhaust gases flowing out of buildings, are some of the most tangible links to understanding a building’s environmental impact. Paying more attention to these flows can lead to big reductions in resources consumed and pollutants sent downstream.

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  • Filterra
  • Filterra
  • Filterra Bioretention Systems
  • Filterra
    Filterra Bioretention Systems
    Filterra Bioretention Systems use a combination of filtration media and landscape vegetation to treat urban stormwater runoff by removing bacteria, metals, nutrients, and suspended solids. The system's standard 7' x 7' footprint, in which a bush or tree is planted, fits into parking lots and curbside landscaping. The inlet accepts surface runoff and the contained water is then treated by the plant's roots, which absorb organic matter, nitrogen, phosphorous, and metals, before it filters into the ground through drainage stone. Filterra Bioretention Systems may be used in new construction or retrofit applications.
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  • Nutrient Separating Baffle Box
  • Nutrient Separating Baffle Box
  • Suntree Technologies Inc.
  • Nutrient Separating Baffle Box
    Suntree Technologies Inc.
    The Nutrient Separating Baffle Box removes leaves and debris from stormwater, sequestering them from water flow to prevent leaching of nitrogen and phosphorus. The unit captures a wide variety of pollutants, including sediment, debris, and hydrocarbons. During the high water flow of a storm, the Baffle Box's turbulence deflectors prevent previously captured sediment from becoming re-suspended in passing water, and hydrocarbons are skimmed off and absorbed by a replaceable floating boom. Existing stormwater systems may be retrofitted with a Baffle Box made of concrete or fiberglass in a range of sizes.
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  • RainPerfect Solar Powered Rain Barrel Pump
  • RainPerfect Solar Powered Rain Barrel Pump
  • Xylem
  • RainPerfect Solar Powered Rain Barrel Pump
    Xylem
    The RainPerfect pump and solar panel can be adapted to most styles of rain barrel. The pump provides enough pressure to run water through a garden hose at 13 PSI, and the 3.5 W solar panel charges a NiMH battery for day or night operation. The RainPerfect system can pump up to 100 gallons of water per 8-hour charge.
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  • Elk M1 Controls
  • Elk M1 Controls
  • Elk Products, Inc
  • Elk M1 Controls
    Elk Products, Inc
    Elk's M1 controls incorporate security and energy management for homes or businesses. The M1Gold includes voice capability for announcement of alarms or changes; the lower-priced M1EZ8 does not have voice capability but may be configured to provide the same remote control features as the M1Gold. Both systems wirelessly control up to 144 zones and keep an event log. M1 controls read temperature sensors and communicate with up to 16 thermostats, which may be programmed to run on individual schedules for energy savings. M1 controls integrate settings for HVAC, water heater, lighting, and security—the "vacation" setting, for example, arms all alarm systems and activates all energy-saving features.
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  • Platon Waterproofing Membrane
  • Platon Waterproofing Membrane
  • CertainTeed Corporation
  • Platon Waterproofing Membrane
    CertainTeed Corporation
    Platon is an HDPE waterproofing membrane for residential foundations that contains up to 92% post-consumer recycled HDPE. The 24 mm thick membrane is dimpled to keep wet soil 1/4" from the foundation and is designed to be installed up to 16' below ground level. Rolls are available in heights ranging from 5'-5" to 10', and are 65'-6" long. A smaller roll that is 44.5" x 50' is available. Platon comes with a 30-year limited warranty.
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  • Delta Footing Barrier
  • Delta Footing Barrier
  • Cosella Dörken Products Inc.
  • Delta Footing Barrier
    Cosella Dörken Products Inc.
    Cosella Dörken manufactures the Delta Footing Barrier, a three-ply sheet good designed to prevent capillary rise of water from the building footing into the basement. The membrane is composed of a polyester base layer, a polyethylene barrier, and an anti-slip surface layer. This dedicated product represents good practice for preventing capillary action from causing mold and other indoor air quality problems.
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  • RW-Series Water Reclamation System
  • RW-Series Water Reclamation System
  • Water Control Corporation
  • RW-Series Water Reclamation System
    Water Control Corporation
    Water Control Corporation produces the RW-Series Water Reclamation System for harvesting and storing stormwater from a commercial building's roof drainage system and using that water for such non-potable applications as landscape irrigation, toilet flushing, and cooling tower and boiler make-up. Packaged systems may include equipment and controls to capture, store, disinfect, filter, repressurize, and deliver reclaimed stormwater to fixtures and equipment. Storage tanks can be polyethylene, fiberglass or lined galvanized steel up to 60,000 gallons in capacity. Disinfection can be provided with ozone, UV, reverse osmosis, or chemical treatment.
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  • RainReserve Rain Barrels
  • RainReserve Rain Barrels
  • RainReserve
  • RainReserve Rain Barrels
    RainReserve
    RainReserve makes kits for diverting rainwater into barrels for simple residential rainwater harvesting systems. The Rainwater Diverter allows rainwater to enter a sealed barrel and overflow through the diverter when the barrel is full. Both the kits and collecting barrels sold by the RainReserve are U.S.-made out of ground polypropylene with UV-inhibitors.
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  • RainXchange System
  • RainXchange System
  • Aquascape Inc.
  • RainXchange System
    Aquascape Inc.
    Aquascape produces the RainXchange system for below-ground storage of harvested rainwater or stormwater with the unusual feature of allowing use of that stored water in landscape features, such as fountains and ponds. Storage capacity is created using AquaBlox modules, which look like milk crates and interlock to create large cisterns, made watertight with large EPDM liners. Aquascape also provides downspout filters, pumps, and other system components.
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  • Original Rainwater Pillow
  • Original Rainwater Pillow
  • Rainwater Collection Solutions, Inc
  • Original Rainwater Pillow
    Rainwater Collection Solutions, Inc
    The Original Rainwater Pillow is a fabric rainwater storage cistern for irrigation, toilet flushing, and other non-potable uses. Made of a polyester scrim coated on both sides with PVC, the pillows are flexible, resistant to freezing to –30°F according to the manufacturer, and highly durable. Standard pillows (1,000–3,000 gallons) are sold with a complete kit including two 9" filters, one 1/2-hp 7-amp pump, a remote control, flexible hose, and fittings; the 1,000-gallon pillow measures 10' x 8' x 2'. The system collects rainwater from a building's gutters, filters it, and channels it into the pillow. Two outlets prevent overfilling; a hose connected to the system's pump will provide 10–12 gpm. The product is available in custom sizes up to 200,000 gallons.
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  • Rain Harvesting Components
  • Rain Harvesting Components
  • Rain Harvesting Pty, Ltd
  • Rain Harvesting Components
    Rain Harvesting Pty, Ltd
    Rain Harvesting Pty Ltd. offers rainwater catchment components including gutter screens, rainheads, first flush diverters, flap valves, filter pits, vermin-proof screens, and overflow valves. It also offers a 144-page introductory handbook describing the processes, materials, and uses of rainwater harvesting. Most components offered are made with stainless steel and PVC. No recycled plastic is used in manufacturing these components due to the potential for lead contamination of potable water; only lead-free virgin resins are used. Orders made at the company's website are shipped from the company's warehouse in Illinois or drop-shipped from Australia. The company provides customer support in North America via the Internet and email.
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  • FloBoy Variable Frequency Drive Hydronic Pumping System
  • FloBoy Variable Frequency Drive Hydronic Pumping System
  • Xylem
  • FloBoy Variable Frequency Drive Hydronic Pumping System
    Xylem
    Flowtronex, a Xylem brand, offers the FloBoy variable frequency drive (VFD) hydronic pumping system. FloBoy can be operated manually or automatically and comes with a diagnostic display for access to operational data. The powder-coated carbon steel case has an integrated fan for ventilation. The FloBoy S can handle flow rates up to 250 gpm and pressures of up to 140 psi, while the FloBoy M can handle flow rates up to 450 gpm and pressues of up to 140 psi.
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  • RainSava Rainwater Harvesting Products
  • RainSava Rainwater Harvesting Products
  • Anua Environmental Products U.S.
  • RainSava Rainwater Harvesting Products
    Anua Environmental Products U.S.
    Bord na Mona's RainSava Rainwater Harvesting System is intended for residential, commercial, and industrial applications. Filtered rainwater from the roof is collected in a storage tank, avoiding potential contaminants on the ground. The size of the tank is calculated based on roof area to ensure overflow at least twice a year to remove floating debris such as pollen, and the floating intake filter extracts the cleanest water for use.
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  • Mega Green Drainage Pipe
  • Mega Green Drainage Pipe
  • Hancor, Inc.
  • Mega Green Drainage Pipe
    Hancor, Inc.
    Mega Green Drainage Pipe, manufactured by Hancor, is a dual-wall, corrugated drainage pipe made from at least 40% post-consumer recycled high-density polyethylene (HDPE). It is suitable for applications such as golf courses, parking lots, playing fields, pond equalization, and culverts. Mega Green comes in a range of diameters from 12" to 60", in lengths of 19' 8". The joints, fittings, and polyisoprene gaskets meet ASTM standards, and the pipe is watertight, meeting ASTM 3212.
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  • SkyHarvester Water Conservation System
  • SkyHarvester Water Conservation System
  • Watertronics Inc.
  • SkyHarvester Water Conservation System
    Watertronics Inc.
    SkyHarvester, a division of Watertronics, designs and engineers turn-key commercial rainwater harvesting systems for new or existing building sites. The systems collect runoff from roofs, parking lots, and other surfaces and store it in composite, metal, or concrete tanks with capacities from 3,000 to 1 million gallons for use in landscaping or irrigation. Other system components include pumps; motors; filtration; oil/water separation; and building automation system integration with Web-based software that controls and monitors the amount of water captured and used.
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