General: 303-692-3500 | 303-782-0390 (fax) | cdphe.commentswqcd@state.co.us Contacts by topic Records center Grants and loans Facility operators Facility design and approval (engineering) Clean water 401 certification Inspections On-site wastewater treatment system Pesticides Permits Temperature monitoring Total maximum daily load (TMDL) Drinking water Compliance assurance Training opportunities and resources for systems Inspection services Source water assessment and protection (SWAP)