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Best Practices in Water Conservation

Best Practices in Water ConservationA healthcare facility may undertake a water conservation project using internal resources, or may choose to hire an engineering company that specializes in this subject. Outside assistance is especially helpful when it comes to analyzing equipment retrofit and replacement projects, since new technologies are constantly coming into the market and their true effectiveness is difficult to ascertain from product literature. In addition, outsiders may make it easier to get your project funded because they can organize and format your data in a way that sells your program to management. Some consultants are willing to negotiate “performance contracts” that are structured to guarantee reductions in operational costs over time. Others may offer a “no capital” five-year program that allows hospitals to treat the capital cost as an operating expense.

Steps to Establish a Water Conservation Program

  1. Audit current water use
    • Install water meters at strategic locations in the facility
    • Read/record water readings weekly and analyze the data. Look for high water use areas, trends, and unusual occurrencesIdentify water conservation opportunities
  2. Identify water conservation opportunities
    • Fix drips, leaks, and unnecessary flows
    • Implement changes to improve practices in cleaning, laundry and kitchens
    • List opportunities requiring engineering/equipment solutions (toilets, sterilizers, boiler, chillers, etc.)Determine cost of opportunities and potential return on investment
  3. Determine cost of opportunities and potential return on investment
  4. Prioritize water conservation opportunities
  5. Develop a phased plan that fits your budget
  6. Obtain funding (revise plan, if necessary)
  7. Implement plan
  8. Measure and document success

Where to look for Water Conservation Opportunities

Wherever water is used there is often an opportunity for conservation. Here are several ideas for getting started on water conservation projects and programs.

Increase Awareness

  • Increase employee awareness of water conservation (educate staff, seek suggestions, assign responsibility, post signs, etc.)
  • Increase patient and visitor awareness of water conservation (e.g., signs in patient rooms and restrooms, publicize water conservation policy)

Pick the low hanging fruit

  • Locate and correct drips, leaks, and unnecessary flows in bathrooms, laundry, kitchen, labs, etc.
  • Repair/adjust flush mechanisms on toilets so that they work as designed
  • Irrigate grounds and wash vehicles less often

Reduce domestic water use

  • Install toilet tank water displacement devices on older models or replace inefficient toilets and urinals with low-flow models
  • Retrofit flushometer toilets with water-saving diaphragms
  • Before selecting new equipment (e.g., low flush, dual flush), check out third party tests to determine actual effectiveness. Under third party maximum performance (MaP) tests, toilets are tested to see how much waste they will flush away instead of their ability to clear away a minimal amount of media.
  • Install flow reducers (<2.5 gpm) and aerators on sinks and showers
  • Install automatic shutoff valves or motion sensor-activated faucets

Processing Equipment

  • As appliances and equipment wear out, replace with air-cooled or water-saving models
  • Develop a steam trap inspection plan and replace faulty steam traps with effective, low-maintenance units
  • Install steam condensate temping systems on vacuum and gravity sterilizers (retrofit kits are available)
  • Replace water-induced vacuum devices on sterilizers with electric pumps (retrofit kits are available)
  • Replace or retrofit continuous flow-through systems on film processors with flow control equipment
  • Recover condensate from refrigerators, freezers and icemakers for reuse

Water Reuse

  • Water can be taken from the reject side of the radiation therapy linear accelerator (creates high-energy radiation to treat cancers) heat exchangers and pumped to the facility’s cooling towers and reused for evaporative cooling
  • Reject water produced in the reverse osmosis process can be reclaimed for non-miscellaneous potable water use or in the cooling towers

Water Supply/Systems

  • Install pressure-reducing valves where system pressure is higher than 60 psi
  • Reduce excessive blow down of cooling towers; operate cooling towers near manufacturer recommended level of total dissolved solids (TDS)
  • Consider using ozone as a cooling tower treatment to reduce water used for make-up
  • Return steam condensate to boilers for reuse
  • Minimize water use for irrigation (e.g., adjust or repair sprinklers, install wet weather shutoff and/or soil moisture controllers)
  • Investigate sources of used water

Kitchen and Laundry

  • Wash only full loads in the dishwasher
  • Turn off the continuous flow used to clean the drain trays of the coffee/soda beverage island (only clean the trays as needed)
  • Reprogram washing machines to eliminate additional rinse cycles, if possible and not restricted by the health department
  • Wash full loads only or reduce water levels to minimize water required per load of washing

Key Resources for Water Conservation

An abundance of water conservation methods and techniques applicable to healthcare facilities are available. The following are sites Practice Greenhealth found to be particularly useful resources. (Please note that links to commercial sites or commercial product literature are offered as examples of available information and should not be considered an endorsement. If you have information you would like see posted here, contact Practice Greenhealth.)

  • WaterSense is a voluntary public-private partnership sponsored by the EPA to promote water-efficient products and practices. WaterSense will provide businesses with a simple way to make smart choices, with the confidence that the products will perform at least 20 percent more efficiently than their wasteful counterparts.
  • WaterWiser – The Water Efficiency Clearinghouse: This American Water Works Association (AWWA) website provides water conservation, efficiency, and demand management information.
  • Green Guide for Health Care Series – Water Conservation Strategies: H2E teleconference resources pertaining to water conservation, including a downloadable presentation and case studies.
  • Promoting the Efficient and Sustainable Use of Water- This webpage, developed by the Alliance for Water Efficiency, highlights mechanisms to reduce water in Medical and Healthcare Systems. Focuses on steam sterilizers and x-ray film processing.
  • Water Efficiency Practices for Health Care Facilities NH Dept. of Environmental Services provides water conservations tips for
    • Domestic/Sanitary Water Efficiency Practices
    • Sterilizing Equipment Water Efficiency Practices
    • X-Ray Equipment Water Efficiency Practices
    • Kitchen/Cafeteria Water Efficiency Practices
    • Outdoor Water Efficiency Practices.
  • Every drop counts From North Carolina, a 5 page water conservation checklist for hospitals and medical facilities

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