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Sampling Instructions


WAL provides analysis of storm water.  Standard turn around time is 10 working days after receipt by the lab. Samples can be rushed up to 24 hour turn around for a nominal surcharge. 

WAL can provide sample bottles with preservative in advance to better enable our customers to be prepared when a significant rain event occurs. WAL offers sample pick-up in a limited Southern California (Orange, Los Angeles, and San Bernardino Counties) region.



Typical required analysis are:


Oil & Grease

Total Dissolved Solids


Additional analysis may be required. See our Industrial Waste Water page for more analysis performed by WAL.