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What is Graywater?

According to the CDPHE, graywater is a portion of the water used in a residential, commercial or industrial building that may be collected after the first use and put to a second beneficial use.  Regulation 86 outlines requirements, prohibitions, and standards for graywater use for nondrinking purposes.  Graywater sources may include water discharged from bathroom and laundry-room sinks, bathtubs, showers, and laundry machines. 

Colorado Law

The Colorado Department of Public Health and Environment (CDPHE) adopted Regulation No. 86 – Graywater Control Regulation, May 11, 2015, making graywater management an opt-in program, thus not mandatory, for local jurisdictions. To allow graywater use, local jurisdictions (e.g., a city or county) would have to adopt an ordinance or resolution to allow graywater use within their jurisdiction by developing a graywater control program that meets the requirements of Regulation 86.

Graywater use in Unincorporated Douglas County

After serious consideration of the regulatory requirements and potential public health and safety implications, environmental impacts and compliance issues, as well as associated costs, Douglas County has determined the organization will not adopt a Graywater Disposal Resolution.  General reasons for this decision include:

  • The primary focus is on protection of public health, safety and welfare.
  • The cost and resources necessary for putting such a program together, including program implementation (environmental permits and regulatory responsibility and liability).
  • The difficulty of properly enforcing such a program.

Graywater disposal may cause other issues.