House Bill 12-1126

CPOW worked with key stakeholders and the Colorado Department of Public Health and the Environment (CDPHE) to address the key recommendations of the ISDS Steering Committee which was established in 2002 by CDPHE. In addition to the Steering Committee’s key recommendations, CPOW tried to introduce a bill in 2011 that reflected our understanding of the common ground recommendations of the 2009 CDPHE onsite wastewater stakeholder process and experienced onsite wastewater professionals from across the country. While not successful, CPOW introduced a bill in the 2012 Colorado Legislative Session that was successful.

House Bill 12-1126 to update the State Statute on Onsite Wastewater Treatment Systems

On-site Wastewater Treatment Systems Regulation 43

Regulation 43 was adopted by The Colorado Department of Public Health and Environment (CDPHE) on May 13, 2013 and became effective June 30, 2013. Local boards of health were required to implement new regulations that comply with Regulation 43 for on-site wastewater treatment systems <2,000 gallons per day by June 30, 2014.

Please see the CDPHE website for additional information.

Regulation 43 can be found here.

Non-Pressurized Drip Dispersal System (NDDS)

The NDDS system is recognized as a type of an Evapotranspiration/Absorption system and is therefore accepted as a proper means of effluent dispersal as long as the CPOW design document is followed. Further note that the September 2016 CPOW NDDS document will be referenced in the proposed revisions to Regulation 43 as a type of an Evapotranspiration/Absorption system. Therefore, all future designs which propose an NDDS as a means of effluent dispersal must be designed in accordance with this updated document.

CPOW Guidance Document for NDDS-Final Revised September, 2016


Regulation 43 2017 Update

After an extensive stakeholder process, Regulation 43 On-Site Wastewater Treatment System Regulation were adopted 5/8/17 and became effective 6/30/17. Counties have until 6/30/2018 to adopt their county specific regulations. The new regulation can be found on the CDPHE website here. Septic tank, higher level treatment system, and distribution product acceptance lists and letters along with other clarifications and useful information can be found on the CDPHE website here.

CDPHE CW 9 Soil Type R Long Term Acceptance Rate Policy

This policy clarifies the intent of current requirements within the On-site Wastewater Treatment System Regulation (Regulation 43) relative to the application of long term acceptance rates for the design and sizing of the soil treatment area when type R soils are encountered. This policy clarifies any perceived conflicts between items noted within Table 10-1A (Section 43.10.C) and those noted in the footnotes to that table.

The CDPHE Clean Water website has a list of Regulation 43 policies and clarifications. Policy CW 9 can be found by clicking here.


Grease Waste Regulation

Link to more information: CDPHE Information

Summary of regulation:

A new Section 18 to address waste grease has been added to the Colorado solid waste regulations due to passage of House Bill 10-1125, required the Department to adopt regulations regarding the collection, transportation and disposal of trap grease and yellow grease. The regulations include provisions regarding the registration of individuals, facilities and vehicles that collect, transport, store, process or dispose of grease, personal use of waste grease, use of a manifest to track waste grease transportation, establishment of financial assurance, annual reporting requirements and annual registration fees. The new regulations require transporters of waste grease (yellow grease or trap grease), facilities that collect, store, process, or dispose of waste grease, and individuals who collect or transport waste grease for personal use (other than for use as biofuel) to  register by March 16, 2012 with the Colorado Department of Public Health and Environment (the Department).

EPA considers phosphorus and nitrogen level changes

OSHA publishes crane signal person requirements


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