Revised Total Coliform Rule
Overview
The California Revised Total Coliform Rule (RTCR) became effective in 2021 with revisions that include the new Coliform Treatment Technique requirement replacing the Total Coliform MCL, and a new E. coli MCL regulatory limit.
Additional information can be found on the State Water Resources Control Board (SWRCB) website and the Environmental Protection Agency (EPA) website.
TCR Sample Results
Sample results are based on the analysis of water samples by laboratories or field equipment. Typically, Total Coliform Rule (TCR) sample results identify the presence of Total Coliform bacteria. Total Coliform is a bacterium used to measure the microbial quality of drinking water. Although Total Coliforms are usually not pathogenic (disease-causing) themselves, their presence in drinking water indicates that fecal pathogens may also be present. Fecal Coliforms are a subset of the Total Coliform group, with Escherichia coli (E. coli) being one of several groups categorized as Fecal Coliform.
The California Public Water Supply Systems Drinking Water Watch website lets you view information about all the TCR sample results (Analyte Code must be 3100, 3013, or 3014) that met the search criteria you specified. You may have specified all TCR sample results in the database, or you may have constrained the list of TCR sample results retrieved by selecting one or more of the following:
- Specific water system
- Water system type, source water type, principal county served, or point of contact type
- Sample Collection Date range values within which the Sample Collection Date must fall
- Only TCR Sample Results where Total Coliform bacteria were present in the sample
Juniper Riviera County Water District has not had a TC+ Violation since 2011.