Drinking Water Well Sampling-2022

Who?    This is a NEW requirement by the “Central Valley Regional Water Quality Control Board” (Regional Board or Water Board)

What?   On-Farm or *Domestic* Drinking Water Well Sampling on ENROLLED Parcels for nitrate + nitrite as nitrogen levels

When?  Due by December 31, 2022; must use qualified ELAP for direct submittal.

Why?    Per Regional Board, high levels of nitrate found in drinking water wells impact public health. Excess nitrate (NO3) in soil is often found in rural and agricultural areas. The most common sources of nitrate are fertilizer, livestock waste, and septic systems. Nitrate in soil is highly mobile and can be easily transported to groundwater. The purpose of this monitoring is to identify domestic drinking water wells that have nitrate concentrations exceeding the drinking water standard 10 mg/L and notify well users of the potential for human health risks.

As a Member, you will receive a letter directly from the California Regional Water Quality Control Board, Central Valley detailing your requirements to meet this regulation by December 31, 2022. This is their regulatory program, please read their instructions thoroughly! [mailed February 2022]

This requirement will be for ILRP ENROLLED parcels only that have a domestic drinking water well used for human consumption. If you need assistance taking your sample, please email info@cgsubwatershed.com or call  (530) 934-8036 to schedule an appointment. We have a Technical Outreach Contractor available to assist you.

*If you do not have an On-Farm or Domestic Drinking Water Well, please contact the Regional Board directly to inform them. Use contact information provided in their communications.

Click here for Sample Letter from Regional Board
Click here for Member Information Form to take to Certified Lab
Click here for Notification Form if sample is 10 mg/L+
Click here for List of Certified ELAP Labs (CGSP recommends calling them in advance!)
Click here for Trifold Brochure
Click here for Frequently Asked Questions (FAQs)

Click here for Regional Board Website information