A listing of permits for the installation of small (individual structure) and large (multi-structure) septic systems. This dataset includes information such as location (tax parcel), size and capacity, date, and permit number.

A listing of permits for water wells. The dataset includes information such as location (tax parcel), capacity, date and permit number. Specific location data, for some well types, is redacted per state law.

Data on advisories issued for water quality problems in selected recreational water areas.

Counts of waterfowl found in regular aerial surveys of Delaware waterfowl habitat areas.

Provides air quality data from monitoring stations throughout the state. Data available include ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide, particulate matter, temperature, wind direction, humidity and wind speed.

Delaware Bay shore survey data starting with 1999 which denotes peak spawning occurrences by day and lunar period, proportion of spawning in May (coinciding with shorebird stopovers), average water temperature, index values for female and male crabs per square meter by beach and bay-wide, the annual sex ratio, and index of abundance per beach.

A listing of professionals issued Class E licenses authorizing them to build and install on-site wastewater treatment and disposal systems.

A listing of underground storage tanks tracked and/or registered by the DNREC Tanks Compliance Program.

A listing of professionals issued Class C licenses authorizing them to design conventional, alternative and experimental on-site wastewater treatment and disposal systems and all pressure distribution systems.

A listing of completed grant awards to commercial, industrial, non-profit, and local government entities for the purchase and installment of eligible energy efficiency measures.