Drinking Water Program OELA Spring Workshop May 15, 2009

Oregon Public Water Systems

91 Regulated Drinking Water Contaminants (2009) 7 Microbials (bacteria, viruses, parasites) 7 Disinfection by-products (trihalomethanes, haloacetic acids) 16 Inorganic chemicals (arsenic, nitrate, lead) 56 Organic chemicals (solvents, pesticides) 5 Radiologic contaminants (uranium)

102,982

Electronic Reporting Which results? Coliform SOCs, VOCs, IOCs (including Arsenic and Nitrate) How? Terminal server –Rapid data entry screens Computer generated file (ASCII*) –Also known as Comma Separated Value (CSV) files *American Standard Code for Information Interchange

Benefits of Electronic Reporting Improved tracking of samples/batches Faster incorporation of water quality data into SDWIS (Safe Drinking Water Information System) Labs have more control of data Data Integrity (verification processes built in)

ASCII Process (computer generated file) Drinking Water Sample Perform Analysis Submit batch to DWP (text file) DWP “gatekeeper” verifies data DWP imports data Data incorporated into SDWIS Lab’s LIMS outputs DWP Data

Data Requirements for Water System Compliance: VOC/IOC/SOC DWP RequirementsExample PWS ID Collection Date05/01/2009 Sample ID12345 WSF (water system facility)EP-C Sample Point1 ORELAP ID*OR ResultsND Analysis Method4500NO3-D Reporting Limit (LOQ)0.1 Analyte code1040 Unit (mg/L)mg/L MRL or MDLMRL * ORELAP ID of lab performing analysis All NELAC requirements need to be followed

Water System Facility WSF: Designated sampling location for water system compliance –For VOC/IOC/SOC is “Entry Point to Distribution” (ie EP-A) Note: DWP is encouraging water systems to put their WSF on the lab forms Sample Point : number assigned to sampling location in SDWIS (“1”)

Analysis Method Method reported to DWP in text files need to match method in SDWIS

LIMS Output of DWP Data Sunshine Campground Nitrate Well #1 ND SM 4500 NO3D Method Analysis Pairings ASCII Rows 00684,EP-A,1,OR100014,sampleID,04/29/2009,1040,4500NO3-D,MRL,0.1,MG/L,ND SM 4500 NO3D 4500NO3-D LIMS:

00731,EP-A,1,OR100014, ,05/01/2009,1040,4500NO3-D,MRL,0.1,MG/L,ND PWS WSF Sample Point ORELAP ID Sample ID Collection Date Analyte Code Method Reporting Limit Unit Result Example of ASCII (text file)

Login to DWP Contact DWP for username and password

Upload file to DWP

PHP “Gatekeeper” Verifies Data

PHP “Gatekeeper” Found Invalid Data

Fields Verified by PHP “Gatekeeper” PWS exists WSF and sample point (ie EP-B, 2) exists for PWS Duplicate Analysis Method matches SDWIS Unit is allowable (mg/L) Other items (contact John Davis)

Enter data via Terminal Server Close batch Upload batch into SDWIS Obtain proof sheet Terminal Server (TS) Process

Terminal Server: Coliform

Example: Nitrate Report

Terminal Server :Chems

Terminal Server (chems): Edit Screen

Customized Proof Sheet

MCL Exceedences * Positive Coliform samples and MCL exceedences still need to be faxed to DWP on dedicated MCL fax line.

Lab Help Page

Samples Due (beta status) A way to identify what samples are needed for a water system’s monitoring schedule.

Next steps… Contact DWP for username and password DWP will help labs as much as possible to set up electronic reporting

Contact Info Michelle Van Kleeck Data Management Coordinator (971) John A. Davis Application, Maintenance, Support for Oregon DWP (971)