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Drinking Water

E.S. Babcock & Sons, Inc.ESB has been certified for drinking water testing by the State of California since 1928. Today we offer a full range of inorganic, organic and microbiological testing for potable waters including all UCMR 3 List 1 and List 2 testing methods. Many of our drinking water clients include local water purveyors, municipalities, and state and federal agencies.

Bacteriological Testing

ESB provides testing for the coliform group of bacteria, HPC, iron bacteria, streptococci, and yeast and mold. We offer the 24 hour presence/absence Colilert® test method as well as multiple tube fermentation and membrane filtration techniques. Enumeration of coliforms, including E. coli, is also available for the Colilert® procedure. When requested in advance, speciation can be provided for positive samples. Complete bacteriological sampling instructions are available on our sampling instructions page.

California Title 22 Drinking Water Requirements

In addition to bacteriological monitoring, the most common requirements for drinking water supplies are contained in California Title 22. Our laboratories provide testing and reporting for primary, secondary, and unregulated chemicals. We were one of the first laboratories in California to analyze for Perchlorate, which is routinely included in our inorganic analysis packages and can be determined by IC/MS/MS (EPA Method 332.0), if requested.

With our extensive drinking water testing expertise we offer:

  • Bacteriological Analyses.
  • Inorganic & Mineral Analyses, such as nitrate, cyanide, and alkalinity.
  • Trace Metal Analysis, such as arsenic, chromium, mercury, copper and lead.
  • Volatile Organic Compounds (VOCs), such as PCE, TCE, and MTBE.
  • Semi-Volatile & Synthetic Organic Compounds (SOC), such as DBCP, Atrazine, Endrin, Benzo(a)Pyrene and Endothall.
  • Radiological Analyses, such as Gross Alpha, Beta and Radon are offered in conjunction with our laboratory partners.

(A complete list of accredited and certified analyses which also includes sample containers, preservatives and holding times can be found on our Qualifications page.)

For a listing of the established maximum contaminant levels, (MCLs) set by the State of California click here.

ESB conducts drinking water analyses daily and can provide you with hard copy and electronic reporting to the State of California in a timely and reliable fashion.

Stage 2 Disinfection Byproducts & Lead and Copper Rule

Additional laboratory services include monitoring for Total Trihalomethanes (TTHMs) and Haloacetic Acids (HAA5) for compliance with maximum residual disinfectant residuals to meet federal requirements. Bromate and Chlorite, along with bromide, chlorate and other inorganic disinfection byproducts and precursor analyses are also available.

To meet the requirements of the Lead and Copper Rule, ESB’s trace metals section provides ICP/MS EPA 200.8 series analysis of distribution system samples.

UCMR 3 Analyses

The third Unregulated Contaminant Monitoring Rule, or UCMR3, is the latest version of the monitoring rule concerning public water systems.

Public water systems serving more than10,000 customers must sample for List 1, Assessment Monitoring. Larger systems serving over 100,000 customers must also sample for List 2, Screening Survey, which monitors for additional chemicals. List 1 monitors for 21 unregulated contaminants, including volatile organic compounds, metals, and perfluorinated compounds, and List 2 monitors for seven hormones. Groundwater systems’ monitoring began January 1, 2013 and must be completed by December 31, 2015.

Babcock Laboratories has won a USEPA small systems contract for UCMR3 Testing. Babcock Labs is EPA-approved for both List 1 and List 2 UCMR3 methods. UCMR3 marks the third time Babcock Laboratories has successfully completed the rigorous process necessary to be approved by the USEPA for water quality testing under the Unregulated Contaminant Monitoring Program.

For more information on UCMR 3, visit the EPA website on UCMR3 or call the Safe Drinking Water Hotline at 800-426-4791.

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