Useful Links, References and Related Studies:
- US EPA Class V Injection Well Information
Provides information on minimum requirements for Class V injection wells.
- US EPA California Injection Well Guidelines and Requirements
When are stormwater discharges regulated as class V wells?
Provides guidelines and regulation requirement on Class V injection wells.
- Maximum Contaminant Levels (MCL)
MCL are regulatory levels reflecting the maximum concentration of a contaminant permissible in drinking water.
- Public Health Goals (PHGs)
PHGs are advisory, health-based standards. They are used by the Department of Public Health to develop MCLs.
- California Environmental Data Exchange (CEDEN)
The CEDEN Network is a clearinghouse for all types of environmental data. Data from this project will be posted on this website.
- The Los Angeles and San Gabriel Rivers Watershed Council – Los Angeles Basin Water Augmentation Study Phase II Final Report
This study examined the effectiveness and suitability of various Low Impact Development (LID) systems (including dry wells) at several sites with different land uses in the Los Angeles area over a period of 5 years.
- USGS – Hydrogeology, Water Chemistry, and Factors Affecting the Transport of Contaminants in the Zone of Contribution of a Public-Supply Well in Modesto, Eastern San Joaquin Valley, California
Over the past 50 years, the City of Modesto has relied heavily on dry wells for stormwater management. While this study did not examine dry wells directly, the risk of groundwater contamination from dry wells can be inferred from the groundwater analysis performed by the USGS and reported in this study.
- Underground Injection Control (UIC), Environmental Services, Portland, Oregon
Provides details and reports on the program, regulations and monitoring results. Below is a diagram of Portland’s UIC.
- Urban Watershed Management, Arizona Department of Environmental Health
Need to Register a Dry Well?
Dry wells are considered by the US EPA as Class V injection wells, defined as a conduit for non-hazardous fluids that is deeper than it is wide. Dry wells serving properties other than single-family homes are subject to the US EPA Underground Injection Control (UIC) regulations. Dry well registration will help maintain groundwater quality by ensuring dry wells are installed in a suitable location and are properly closed when they are no longer in use.
Questions regarding Region 9 Injection Well registration email: firstname.lastname@example.org