Dry wells and other sub-surface stormwater infiltration practices/technologies serving uses other than single-family homes are considered Class V wells, subject to US Environmental Protection Agency (US EPA) regulations. Typically, Class V wells are shallow wells used to place a variety of fluids directly below the land surface. By definition, a well is “any bored, drilled, driven shaft, or dug hole that is deeper than its widest surface dimension, or an improved sinkhole, or a subsurface fluid distribution system” and an “injection well” is a “well” into which “fluids” are being injected (40 CFR §144.3). A guide can be found here: Class V Well Guide.
Stormwater dry wells and other sub-surface stormwater infiltration practices/technologies may be authorized to operate as long as they are registered with the US EPA, and only inject uncontaminated stormwater. The County of San Luis Obispo currently requires Class V Well registration as part of permitting new development.
Anyone who has applied for a County construction permit or grading permit can use this service.
This service is provided free of charge.
This service is available throughout the year during regular business hours except during scheduled holidays.