What are the sampling locations within systems for unregulated contaminant monitoring?
For chemical monitoring, the sampling location is designated as the entry point to the distribution system (EPTDS). These sites are typically keyed to the Phase II/V sites that the States and systems have already approved and determined are representative. Using the Phase II/V sites should be clear for the systems and should provide data consistent with the compliance program. For sampling locations designated as “Distribution System” in the UCMR, the locations are again keyed to sites the State and systems have previously defined for other sampling (e.g., total coliforms, THMs-DBPs).
Related Questions
- Can a State require submission of unregulated contaminant monitoring data, which has been received by the PWS, before the specified State review period?
- If an unregulated contaminant becomes regulated, would the PWS be allowed to use the data from the UCMR (1999) as the initial monitoring profile?
- What are the sampling locations within systems for unregulated contaminant monitoring?
