CDC well-siting guidance
Supports: Dakiv’s 50-ft private-well screen from septic tanks and leach fields.
Does not support: a claim that 50 ft is the permit minimum everywhere.
Primary evidence
Sources, scope and freshness.
We prefer primary public agencies and make the limitation of each source visible. Last source review: 22 September 2026.
CDC · current health guidance
Well Water Safety
Used for: the 50-ft screening distance from private wells to septic tanks and septic leach fields.
Limit: a health-oriented siting baseline is not the local permit code.
Open CDC source ↗EPA · regulatory structure
Frequent Questions on Septic Systems
Used for: the statement that individual onsite systems are regulated by states, tribes and local governments and that local programs establish setbacks from buildings, driveways, property lines and surface waters.
Open EPA source ↗EPA · water protection
Septic Systems and Drinking Water
Used for: explaining contamination pathways between onsite wastewater and nearby drinking-water wells.
Open EPA source ↗EPA · surface water
Septic Systems and Surface Water
Used for: explaining that state/local programs set horizontal separation to waterbodies and that site conditions such as porous soils can justify more separation.
Open EPA source ↗EPA · official contacts
State Septic System Program Contacts
Used for: the 50-state regulator starting point linked from Dakiv’s state finder.
Open EPA directory ↗EPA · maintenance
How to Care for Your Septic System
Used for: maintenance-record and inspection/pumping context.
Open EPA source ↗EPA · historical design reference
Onsite Wastewater Treatment and Disposal Systems design manual (1980)
Used for: explaining why bedroom-based design-flow methods appear in onsite wastewater regulation.
Important: this is historical design material, not a current nationwide residential code and not used to output a legal tank or drainfield size.
Open historical EPA manual ↗Correction policy
If an agency changes a source or a Dakiv statement no longer matches the cited source, email [email protected]. We correct source-backed factual errors without waiting for the next content cycle.
What these sources support — and what they do not
EPA septic FAQs
Supports: the state/tribal/local regulatory structure and the need to use the responsible permitting authority.
Does not support: one national table for every component setback.
EPA water-protection pages
Supports: why drinking-water and surface-water context matters around onsite systems.
Does not support: parcel-specific approval without local site evaluation.
Historical EPA design manual
Supports: design-history context such as why bedroom-based methods appear in onsite wastewater practice.
Does not support: a current nationwide tank-size or drainfield-size rule.
Freshness and source-replacement policy
Agency pages are reviewed when calculator logic is changed and during substantive content audits. If an official URL moves, Dakiv prefers the replacement primary-agency source rather than silently falling back to a contractor or secondary summary. State and local rules are intentionally not copied into a frozen “50-state setback table” unless they can be maintained with jurisdiction, effective-date and scope context.
For a parcel-level decision, the source chain should end with the current state/local program responsible for that property. Use the regulator finder to get that verification step into your workflow.