Drinking Water Supply Well Monitoring Information for Rice Growers
This portal contains several documents to help you in meeting the regulatory requirement of monitoring drinking water supply wells.
Nitrate monitoring in Drinking Water Wells on rice parcels began in 2022. Growers arrange for or collect sample from well head and submit to laboratory. The laboratory reports results to Grower and Central Valley Board. Do not sample irrigation only wells. For sampling frequency: If N < 8 mg/L for 3 consecutive years, then reduce sampling to every 5 years; If 8 < N < 10 mg/L, continue annual sampling; If N > 10 mg/L, notify users and Water Board, stop sampling
Drinking Water Well Supply Survey
Please respond to the survey by reporting the number of wells you have per county. We must report the number of wells by county and not specific details. The survey helps us avoid paying for a study to estimate the number of wells by county.
Take the SurveyThe list below provides documents from which you select relevant to your situation.
- Drinking Water Well Member Information FormForm to submit with your sample(s) to the lab
- List of Certified ELAP LabsList of labs certified to send data to the State’s GeoTracker database, compiled by the Central Valley Water Board staff
- Drinking Water Well Sample Collection: Grower Quick GuideOne-pager of tips for collecting samples
- Nitrate Test Result Notification and Fact Sheet – EnglishNotification template to provide tenants if nitrate results meet or exceed 10mg/L
- Nitrate Test Result Notification and Fact Sheet – EspañolNotification template to provide tenants if nitrate results meet or exceed 10mg/L
- Nitrate Test Result Notification and Fact Sheet – PunjabiNotification template to provide tenants if nitrate results meet or exceed 10mg/L
- Nitrate Test Result Notification and Fact Sheet – HmongNotification template to provide tenants if nitrate results meet or exceed 10mg/L
- CA Water Boards Outreach LetterProvided by the Central Valley Water Board in 2020
- Drinking Water Well Monitoring FAQLarger document with details and diagrams (if you need it)