The Centennial Water District is asking residents to provide comments and revisions proposals to the district’s rules and regulations response plan, and an industrial pretreatment program.

Revisions will be made to Articles II, VI, Exhibits B, C and D, as well as several areas within the Enforcement Response Plan

“Water and wastewater is an industry that is constantly moving,” said Kari Larese, a spokesperson for the Centennial Water and Sanitation District. “New technology, new regulations, updating infrastructure, etc. and it is best practice to continually review our rules and regulations and adjust accordingly.” 

The updates, which will involve items such as definitions and objectives, are intended to bring the district’s rules and regulations up to industry standards, and to help industrial users maintain compliance. 

The United States Environmental Protection Agency (EPA) established a regulatory requirement for municipalities with a pretreatment program to develop and implement an Enforcement Response Plan that will include procedures when investigating instances of noncompliance by Industrial Users. 

According to the district, the revisions will affect industrial users in the district’s service area that include but are not limited to industrial users with grease interceptor, food service establishment, dental facilities and photographic processing facilities. 

Industrial users are any non-domestic source discharging or with the potential to discharge pollutants, as stated in the Rules and Regulations. 

The most significant revisions are to the rules regarding food service establishments and grease interceptors. 

Grease interceptors are a plumbing device typically located between kitchen drains and the sanitary sewer that are intended to capture fats, oil and grease and prevent those from flowing downstream to the sewer. 

All grease interceptors must be maintained and kept in efficient operating condition at all times by the industrial user, according to the District’s Rules and Regulations.

To ensure this requirement is met by industrial users, the District is proposing the following changes to how grease interceptors are maintained:

  • Grease interceptors are considered full at 25%.
  • Grease interceptors must be pumped/cleaned at a minimum of every three months. 
  • Maintenance and pumping records must be submitted to Centennial Water within 30 days of each pumping/cleaning. This includes grease manifests/receipts. 

The district is seeking public comment on the proposed revisions to the Rules and Regulations  from Sept. 25 through Oct. 30. 

Comments can be submitted in writing to or delivered to 62 Plaza Dr., Highlands Ranch. 

Additionally, public comments will be accepted at regularly scheduled board meetings in October. 

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