Waste water and storm water collection and analysis is performed with state-of-the-art testing equipment by qualified professionals. Pat Chem Laboratories (PCL) accepts scheduled samples 24 hours a day, 7 days a week. Storm water and waste water testing will determine if your water adheres to municipal regulations; if you require advanced testing, PCL can provide that as well. For a complete list of our California State Approved tests and methods click here. Ask about bundling all of your testing needs at reduced rates or the benefits of joining our annual testing program.