Boulder County
Public Health
3450 Broadway
Boulder, CO 80304
(303) 441-1564

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If properly designed, constructed, and maintained, your OWS can provide long-term, effective treatment of household wastewater.

If your OWS system isn’t maintained, you might need to replace it, costing you thousands of dollars. A malfunctioning system can contaminate groundwater that might be a source of drinking water. To sell your home, your septic system should be in good working order.

Evaluating Your System

Boulder County Public Health provides residential wastewater system evaluations. Please complete and submit the following form for an evaluation:

• Residential Water/Wastewater Evaluation Application
  (PDF 150 KB)

General OWS Resources

• A Homeowner's Guide to Septic Systems, EPA
  (PDF 1524 KB)
• Maintaining Home Aerobic Units (PDF 450 KB)
• Septic Maintenance: Extending Life of Drainfield with Alternating Fields (PDF 543 KB)
• Small Systems Operation & Maintenance (PDF 1092 KB)
• Additives (PDF 80 KB)

Well-Related OWS

• Well-A-Syst - Managing Your Septic System to Protect Your Water Supply (PDF 125 KB)

Case Study: OWS Maintenance

• Septic System Maintenance: Helps Keep Vision of Nags Head Alive (PDF 1045 KB)

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Please Note: This information is intended to provide a better understanding of the functions of onsite wastewater treatment and the need for proper design, installation, and maintenance. Always consult a licensed professional or public health official with questions regarding engineering, installation, and servicing of onsite wastewater systems.