We generally allow connection to the existing septic system, provided the owner notifies Arapahoe County Public Health in advance, and we approve the connection. Can I install a bathroom in a garage, barn, etc., and connect it to my existing on-site wastewater treatment system (OWTS)? Horses or other livestock should not be placed on an STA, because compaction of the soils may occur causing premature failure of your absorption area. Mow any grasses planted on the STA area regularly. You may consider planting buffalo grass or other natural grasses which do not require irrigation. Irrigated landscaping is not recommended, since it has the possibility to saturate an STA causing the septic system to fail prematurely. We recommend that an STA be left largely untouched by homeowners. Will I be able to irrigate or have horses where my Soil Treatment Area (STA) is located? All pumping and evaluation of septic tanks should be done by a licensed cleaner. If your OWTS receives higher than average use, as determined by your licensed cleaner, you may want to consider a more frequent pumping interval. Dosing tanks shall be inspected and pumped if sludge accumulation is observed. We require that septic tanks be inspected every four years and pumped when scum and sludge accumulate to greater than 25% of the effective volume of the tank. How often do I need to pump my septic tank? They typically recommend a minimum of one acre for lots supplied by central water and 2.5 acres for lots with wells. Local planning agencies do have minimum lot sizes in their zoning codes. We do not have a minimum lot size requirement. What is the minimum lot size for an on-site wastewater treatment system (OWTS)? The seller of the property is required to obtain a use permit prior to the sale of the property. I am selling my property and need to get my waste water system certified. The ground slope at the area of the proposed STA is greater than 20%, or (d) the proposed system is a commercial system, (e) the proposed system utilizes pressure distribution.Groundwater, bedrock, or other limiting layer is present within 4 feet below the depth of the proposed STA.The following soil types are identified within 4 feet below the depth of the proposed soil treatment area (STA): 0, 3A, 4, 4A, 5, R-O, R-1, R-2 treatment levels TL2, TL2N, T元, and T元N as specified in tables 10 and 11 of Regulation O-17.Under what conditions must an OWTS be designed by a Colorado Licensed Professional Engineer?Ī Colorado Licensed Professional Engineer must design a system if any of the following occur: Permit applications may be sent to any of our Environmental Health offices or via email. Application for a License to Clean Onsite Wastewater Treatment Systems.Application for a License to Install Onsite Wastewater Treatment Systems.New/Renewal Applications for ProfessionalsĪll Onsite Wastewater Treatment System designers, soil evaluators, installers, inspectors, operation and maintenance providers, and pumpers will be required to obtain the National Association of Wastewater Technicians (NAWT) training course for the discipline they want to work in. Use permit inspections must be conducted by a Certified NAWT Inspector. Agreement to Repair a Septic (if applicable).Agreement to Forego Expansion (if applicable).Use Permit Repair Verification Form (if applicable).To obtain a permit, the following is required: Other reasons deemed necessary by the department.An addition of a separate "modular" home.A change in use of the property (i.e., a residence to a business).A sale or change of ownership of a property.Find a transfer of title/user permit inspector from the National Association of Wastewater Technicians.Permit applications may be sent to the Environmental Health offices or emailed. Application for a Variance for an On-site Wastewater Treatment System.Conventional OWTS Design Worksheet (if applicable).Percolation Test Summary and Data Form (if applicable).Site Evaluation and Design Document Checklist (recommended).Application for an On-site Wastewater Treatment System Permit.Begin by applying for a septic permit and providing all required information below: Arapahoe County Public Health permits the installation, repair, and use of these systems in the County.Ī septic permit is required for new installations, expansions, and repairs. Septic systems are installed on properties that cannot be served by a wastewater utility. An On-Site Wastewater Treatment System (OWTS), commonly known as a septic system, treats the wastewater on an individual’s property.
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