Regulated Drinking Water Testing in Napa

In the Napa Valley region, where water quality is critical for municipal systems, vineyards, and commercial operations alike, Caltest Labs offers top-tier regulated drinking water testing services. We support your operations with accredited testing, timely results, and local expertise.

What regulated testing covers

Any water system offering potable supply must comply with California’s drinking water standards. This means testing for inorganic chemicals (e.g., heavy metals, nitrate), organic compounds, microbial contaminants, and disinfection by-product controls. At Caltest Labs, our methods are approved and recognized by state regulators to deliver compliant reporting you can trust.

Why Napa clients trust Caltest

– California-accredited laboratory with NELAP/ELAP certifications ensures your samples meet regulatory expectations.

– Specialized understanding of Napa’s water sources, including wells, surface intakes, and water used in agricultural operations.

– Clear reporting—our results highlight compliance status, exceedances, and provide context so you understand your data.

How it works

Reach out to our team to request a quote and sample kit. We’ll provide all the necessary supplies and documentation. After you collect and ship the samples back, our team initiates the analysis process. Results are processed quickly and delivered securely online. We also provide interpretation and guidance for next steps if you encounter any issues.

Ensure compliance in Napa today

Don’t risk regulatory non-compliance or delays—we’re here to help. For regulated drinking water testing in Napa, choose Caltest Labs. Reach out today to schedule testing and keep your water system performing at the highest standard.