1) Develop a Protocol. Every site presents distinct challenges, with varying levels of risk and complexity. Developing tailored protocols to ensure successful cross-connection testing within the constraints of each location is crucial. For instance, several sites are medical facilities where the potable water supply cannot be interrupted under any circumstances, necessitating specialized protocols for these locations. Protocols must include: • Proposed testing methods for each facility • Detailed data collection methods • Proposed equipment needed for tests • Anticipated shutdown durations for facilities requiring temporary potable water cessation • Specific requirements to ensure accurate cross connection testing where potable water cannot be shut off. 2) Test. Carry out cross connection tests at each customer’s site. Depending on the sites potable water shut-off eligibility, this can be a: • Shutdown-test • Partial shut-down test • Pressure test • Dye test • Other approved method. 3) CSI or WUS. Many sites consist of multiple buildings, and it is the consultant’s responsibility to ensure that the potable water supply within each building is adequately protected from any potential sources of contamination. This will be achieved through either a Customer Service Inspection or a Water Use Survey, depending on the assessed likelihood of contaminants being present. For CSIs: • Must understand and follow the procedures of 30 TAC § 290.44(h)/290.46(j). • Inspector must have the required credentials to perform a CSI, as stated in 30 TAC 290.46(j).
