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Sewage Systems

Facility Design and Approval

Preliminary Effluent Limit (PEL)  Application and Guidance pdf file

LIST OF PERMITTED FACILITIES   -  ECHO  - EPA Data Record Site
TO SUBMIT EFFLUENT DATA FOR ALL PERMIT TYPES REQUIRING DATA SUBMITTAL
               Effluent data submittal form excel spreadsheet
Individual Permits                                                          Info Regarding Domestic Treatment Works Decommissioning pdf file
Domestic Surface Water Discharge Application pdf file Application word document Termination pdf file
Domestic Ground Water Discharge Application pdf file Application word document Termination pdf file
General Permits  Discharge to Surface Water        Info Regarding Domestic Treatment Works Decommissioning pdf file

Domestic Waste Water Treatment Plant with
Chronic Low Flow Design Ration 100:1
             COG588000

Application pdf file Application word document Termination pdf file
Permit pdf file                       Original Fact Sheet pdf file     
Mod 1 Fact Sheet pdf file   Mod 2 Fact Sheet pdf file
Domestic Waste Water Treatment Facilities   
             COG589000
Application pdf file Application word document Termination pdf file
  Permit pdf file                    Fact Sheet pdf file  
  Mod1 Fact Sheet pdf file    Mod 2 Fact Sheet pdf file
 
General Permits Discharge to Ground Water Guidance and Overview for Following GW Applications 
                                     Overview pdf file  
Info Regarding Domestic Treatment Works Decommissioning pdf file
Domestic Waste Water Treatment Systems 
with Land Disposal of Effluent     
             COX631000
Application pdf file Instructions pdf file Termination pdf file
Permit pdf file Fact Sheet pdf file Amendment pdf file
Domestic Water Water Treatment Systems
with Land Treatment of Effluent
              COX632000
Application pdf file Instructions pdf file Termination pdf file
Permit pdf file Fact Sheet pdf file Amendment pdf file
Domestic Waste Water Treatment Systems 
with Land Treatment of Effluent at 
Agronomic Rates  COX633000
Application pdf file Instructions pdf file Termination pdf file
Permit pdf file Fact Sheet pdf file Amendment pdf file
Domestic Waste Water Treatment On-Site Systems 
with Avg Design Cap >/= 2,000 Gallons/day
             COX621000
Application pdf file Instructions pdf file Termination pdf file
Permit pdf file Fact Sheet pdf file Amendment pdf file
Domestic Waste Water Treatment Works with 
No Ground Water Monitoring Requirements
             COX622000
Application pdf file Instructions pdf file Termination pdf file
Permit pdf file Fact Sheet pdf file Amendment pdf file
Stormwater Discharge Permits
Non-Extractive Industrial Activity Discharges
            COR900000
Application pdf file   
Termination pdf file   
Questions and Answers pdf file
Permit pdf file   
Fact Sheet pdf file    
Mod 1 Fact Sheet pdf file    
Response to Comments pdf file
No Exposure Exclusion from
CDPS Stormwater Permitting
Application pdf file Termination pdf file
Other Permitting Forms   
Modification Request Request pdf file
Notice of Transfer 
       to Transfer an entire Permit to another party
Request pdf file
Withdrawl Request - withdraw a request for a 
      new permit or a modification request
Request pdf file   
Application Supplement form - used when providing the
       Division with additional information after submitting
       the initial application.
Supplement Form pdf file

 

 

  

Operator Training and Certification

Compliance Forms
Form Title Description Link
Annual Reports COX622000 Self Reporting Form Reporting Form pdf file
  COX633000 Self Reporting Form Reporting Form pdf file
  Biosolids Form word document
  Reclaimed Water Form pdf file
Change of Contact To change contact information for legal, local, DMR, Operator, etc., Contacts Form pdf file
Significant Change in Discharges    Request pdf file
Compliance Schedule    Form pdf file
 DMR information Routine Reporting of Data DMR Guidance pdf file
  Electronic Submission of DMR Data Net DMRs Overview pdf file
  DMR Training Training Information pdf file
Notice of Non-Compliance   
  • Spill Reporting Information    Spills
Complaints

Water Quality Control Commission Regulations      

Compliance Assistance
 
      Wells  

         Water Well Construction Rules 
                    (Section 14 for minimum construction standards
                     for monitoring wells - State Engineer's Office). 

Rules
         Monitoring Well Completion Report Report pdf file
         Monitoring Well Sampling Protocol (Suggested) Guide pdf file
     Sampling
         Lysimeter Sampling Protocol (Suggested) Guiide pdf file
         Groundwater Sampling Guidelines for Superfund
         and RCRA Project  managers - Groundwater and Engineering Forums
Guide pdf file
         Compendium or ERT Ground Water Sampling Procedures (US EPA) Manual pdf file
         Practical Guide for Groundwater Sampling 
                   (Illinois State Water Survey)
Guide pdf file
         Ground Water Monitoring Guidance Manual 
                    (Pennsylvania Dept of Env Protection)
Guide
    Guidance
         Ammonia Toxicity Model (AMMTOX) Background Manual Manual pdf file
         Ammonia Toxicity Model (AMMTOX) Operating Instructions Manual pdf file  
         Ammonia Toxicity Model (AMMTOX)  Reach Model Reach Model excel spreadsheet  
         Ammonia Toxicity Model (AMMTOX)  Recur Model Recur Model excel spreadsheet
         Guidance for General Groundwater Permit COX622000 
                 Risk-Based Analysis
Guidance Document pdf file
                         Cumulative Nitrate Loading Analysis Worksheet Worksheet excel spreadsheet
         Lagoon/Pond System Guidance Guide pdf file
         Overview of Groundwater Discharge Overview pdf file
         Septic Systems Guidance Guide pdf file
         Guidelines for estimating leakage from existing sewage lagoons 
          (These guidelines were developed and implemented by the 
          State of Oregon Dept of Env Quality and provide just one example 
          of the Colorado Water Quality Control Division's expectation
          for the contents and  approach of a lagoon seepage rate study.)
Guidelines pdf file
A Homeowner's Guide to Mountain Ground Water             Water Smarts pdf file
Underground Injection Control (UIC) Program   Underground injection wells are primarily used to 
         dispose of wastes into the subsurface and have the potential to adversely affect underground
         sources of drinking water. THe UIC Program in Colorado is administered by the USEPA Reg 8

 

The Biosolids Program established requirements for the beneficial use of domestic wastewater treatment plant sludge.  Biosolids are a byproduct of wastewater treatment plants. They contain both valuable nutrients for crop growth and soil conditioning materials. Beneficial use requires proper treatments and managemetn to protect public health and the environment.

Applications and Forms

        Letter of Intent for the use and distribution of biosolids for applications 
        to agricultural land or reclamation of land.

Application pdf file
        Letter of Intent for unrestricted use of biosolids on lawns and gardens; 
        Or bagged (containerized) biosolids for restricted use.
Application pdf file
        Notice of Transfer Request pdf file
        Notice of Change of Contacts Form pdf file
        Termination of use of Biosolids Termination pdf file
         Biosolids Annual Report Form Form word document
         Biosolids Plant Available Nitrogen (PAN) and Agronomic Rate
         Calculation
Worksheet excel spreadsheet
Inspection Forms
        Biosolids Site Inspection Form pdf file
        Biosolids Facility Inspection Form pdf file
        Biosolids Facility Audit Form pdf file

Regulations and Policies

        Regulation 64 Biosolds Program

        Water Quality Permits Policy 26 Methodology for Determining Agronomic Rates for the          
          Beneficial Use of Biosolids WQP26 pdf file

        Water Quality Permits Policy 28 Blending of Setage from an Individual Sewage Disposal   
           System (ISDS) with Biosolids WQP28 pdf file
Related Web Links

        EPA Biosolids
        EPA Region 8 Biosolids
       State of Biosolids Use in Colorado pdf file

For more information, please contact the Water Quality Control Division at 303-692-3517.
During hours of 8am-5pm, press 0 to get assistance

 

 

 

 

 

 

The Pretreatment Program is designed to prevent pass through of hazardous materials and interference at Publically Owned Treatment Works (POTW's), protect the quality of POTW sludge, and to protect POTW workers from fires, explosions, and other safety hazards related to industrial discharges.
 
Types of Permittees

1. Industrial User - indirect dischargers

Application pdf file

2. Publically Owned Treatment Works  that receive discharges of non-domestic
                  wastes from industrial users.

Application pdf file

3. Pretreatment Non-Significant Industrial User  - this application applies to sources of discharge to a POTW in which the user NEVER discharges more that 100 gallons per day (gpd) of total categorical wastewater (exluding sanitary, non-contact cooling and boiler blowdown wastewater, unless specifically included in the Pretreatment Standard).
       The Following conditions MUST BE MET:
        a. The Industrial User has consistently complied with all applicable categorical Pretreatment Standards and Requirements.
        b. The Industrial User annually submits the certification required in 40 CFR 403.12(q) together with any additional information necessary to support the certificaiton statement.
        c.  The Industrial User never discharges any untreated concentrated wastewater.

  Application pdf file
Other Information:  

Notice of change of Contacts

Form pdf file  

Spill Reporting Information       

Spills  

Complaints

 

Discharge Monitoring Reports

Net DMRs Overview pdf file   Training Information pdf file
  Guidance pdf file  

 

   

            

      
           
 

 

 

 

 

 

 

         

 

  

 

The Reclaimed Water Program is designed to promote the use of reclaimed water in Colorado.
The program includes requirements for reclaimed water to meet minimal standards, and for treaters
and users of reclaimed water to employ best management practices and oversee its use. 

         Letter of Intent to Treat and Supply Reclaimed Water       Application pdf file         
         User Plans to Comply for the Use of Reclaimed Water      
          User Plan to Comply Irrigation pdf file  
          User Plan to Comply Industrial pdf file  
          User Plan to Comply Commercial pdf file  
          User Plan to Comply Fire Protection pdf file

Policies and Guidelines
         WQP21 pdf file Guidelines for Determination of Agronomic Rate for Application of 
                                           Reclaimed Water under Colorado Regulation 84   
         WQP 25 pdf file  Monitoring and Reporting Requirements for Reclaimed Water
                                           Treatment Facilities                                                        
Other Permitting Forms and Documents
          Request pdf file Notice of Transfer
          Form pdf file Notice of Change of Contacts
          Form pdf file Annual Report for Use of Reclaimed Water
          Termination pdf file Notice of Terminating Treatment, Supply and Use of Reclaimed Water 

Related Web Links:

 

 

 

 

 

 

 

Regulation 84 - Reclaimed Water Control Regulation

Applications
 

 

 

 
Issued Enforcement Actions for 30-day public comment
 
 
 
Issued Enforcement Actions (January 1, 2009 through Present)
For enforcment actions older than 2009, please contact the records center   
 

Clean Water Compliance and Enforcement Unit

 

The Clean Water Compliance and Enforcement Unit monitors self reported data from facilities that have discharge permits. The Enforcement Specialists are in charge of working with these facilities to make sure that the State of Colorado's wastewater is meeting the guidelines set by the Clean Water Act.

 


 

DMR Guidance Button   ECHO website
If you have received a compliance advisory regarding your discharge monitoring reports, please review the DMR Guidance Document to ensure that you are filling your DMRs out with the proper parameters and reporting units.
 
If you believe you have identified an error in the data reported to the Division and/or published through EPA's Enforcement & Compliance History Online (ECHO), please click on the link to report the error directly through the ECHO Website.
     
Swim Beach Button  
Clean Water Policies
If you are looking for information on Colorado's Swim Beaches, Natural Swimming areas, Swim Beach Monitoring, or Swim Beach Closures, please visit our Swim Beach page.
 
For copies of Clean Water Enforcement Policies, please visit the policies page.
 
 

 
 

On-site Wastewater Treatment Systems: On-site Wastewater Treatment Systems (OWTS), more commonly known as septic systems, have traditionally been called Individual Sewage Disposal Systems (ISDS) in Colorado.  For OWTS information, click here

Graywater: "Graywater" means that portion of wastewater that, before being treated or combined with other wastewater, is collected from fixtures within residential, commercial, or industrial buildings or institutional facilities.  Sources of graywater may include discharges from bathroom and laundry room sinks, bathtubs, showers, laundry machines, and other sources authorized by rule.  Graywater does not include the wastewater from toilets, urinals, kitchen sinks, dishwashers, or non-laundry utility sinks.  For graywater information click here.