ACWD monitoring wells will be pumped so that groundwater samples can be collected and tested for water quality parameters. This work is necessary because groundwater is a critical source of water that makes up 30 to 60 percent of ACWD’s total water supply.
As part of the sampling protocol, a limited amount of groundwater must be removed from the wells and discharged to nearby storm drains. As a result, you may notice water temporarily flowing in the gutters near the sampling sites. ACWD staff has evaluated possible ways of recapturing or reusing the well water removed. Unfortunately, in most cases, it is not cost effective nor technically feasible to do so. Monitoring our groundwater basin is key to protecting our groundwater resources and achieving our mission of providing a reliable supply of high quality water to our customers.