By State › Delaware

Delaware: Laws & Legal Considerations

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Delaware treats rainwater harvesting as a genuine stormwater management tool, not just a permitted hobby.

RuleDelaware
Source water Rooftop or other catchment
Permit required No water rights permit needed
Governing standards Delaware Administrative Code Title 7 §5101-11.0 (Post Construction BMP Standards) and the 2018 State Plumbing Code (referencing 2015 IPC §1303)
State posture Sponsors incentive programs encouraging rainwater harvesting as sustainable stormwater management

Where to find it: the Delaware Department of Natural Resources and Environmental Control (dnrec.delaware.gov).

Water rights: riparian rights blended with natural-flow doctrine

Delaware’s water law combines ordinary riparian rights with the natural-flow doctrine, shaped by centuries of accumulated water law plus more recent coastal-protection legislation and a federal interstate program managing the Delaware River.

ConceptHow it works in Delaware
Basic rule Riparian use must be reasonable, judged by comparing the proposed use against other riparian landowners' uses and any interference with downstream users
Interstate layer The Delaware River is separately managed under a federal interstate compact given the river's shared multi-state significance

Where to find it: the Delaware Department of Natural Resources and Environmental Control administers state water regulation.

Concealed carry: a court-issued, may-issue license

Delaware requires a Concealed Deadly Weapon License (CDWL), issued by the Superior Court on a may-issue basis, though in practice most qualified applicants are approved.

RequirementDetail
Standard May-issue CDWL, issued by the Superior Court
Public notice requirement Applicants must publish intent to apply in a local newspaper at least 10 days before filing
Other requirements Firearm training course, five references, and a background check
License validity 3 years initial, 5 years on renewal
2026 status No permitless-carry legislation has been enacted

A public-notice step unlike any other state covered here

Delaware’s requirement to publish intent to apply for a carry license in a local newspaper before filing is a genuinely distinctive procedural step, not seen on any other state’s page on this site. It doesn’t change the underlying approval odds for qualified applicants, but it is a real, publicly visible part of the process.

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