North Water District Laboratory Services

NWDLS provides field collection services for the many different needs of our clients. We provide many types of sampling services, including automatic composite sampling. We can provide a range of field services for our clients who may need scheduled permitted testing, individualized location special samples, and industrial baseline monitoring. NWDLS is a full service laboratory capable of analyzing a wide range of environmental parameters. We follow methods set forth in SW846, EPA Methods for Water & Wastewater, and Standard Methods for the examination of Water & Wastewater. We also incorporate methods provided by our clients for specific in-process utilization and quality control. Microbiological analyses include Total Coliform (SM9222B), e.Coli (EPA 1603, SM 9223B), Fecal Coliform (SM 9222D), HPC, IRB (B.A.R.T.),and Enterococci. Sludge analyses include % Solids (SM 2540G), B.L.F., Class B Analysis, P.C.B. (SW-846 8082), Paint Filter (SW846 7.3.3), S.O.U.R. (SM 2710B), Sludge Volume Index (SM 2710 D), T.C.L.P. (SW-846 1311), and Volatile Solids (EPA 160.4). Organic analyses include Carbamates (EPA 632), Herbicides (SM 6640B), Haloacetic acids (EPA 552.2), O-Chlorine pesticides (EPA 608), O-Phosphorus pesticides (EPA 1657), Phenols (EPA 420.1), Semi-Volatile Organics (EPA 625), SUVA, Total trihalomethanes (524.2), TOC and DOC (415.1), TPH (TCEQ 1005), UV254 (5910B), and Volatile Organic Compounds by GCMS and GC (EPA 524.2 and 624).