| Total coliforms, in general do not present a health concern, rather they are used as an indicator of water quality and their absence is a sign of proper water treatment and the integrity of the distribution system. The TCR became effective 1990, with the RTCR in 2016. Sampling site plans must be approved for when and where samples are collected from the distribution system, and the sample must be representative of the distribution water quality. The number of monthly samples is determined by population size, but can be increased by request of the system. If a system increases their number of monthly samples, they are required to sample that number until they request otherwise. The test is presence/absence, with any present samples being resampled, as a set of three “repeat samples” at the original site, within five connections upstream of the original site, and within five connections downstream of the original site, within 24 hours of learning of a positive sample. The repeat sampling sites must be included in the sampling plan. Level 1 and Level 2 Assessments were instituted under the RTCR and are used as a method to assess the system to locate areas vulnerable to contamination. Level 1 Assessments are completed by the system, whereas Level 2 Assessments are completed by Drinking Water Compliance and Technical Assistance staff. | 0 to 1,000 | 1 | | 1,001 to 2,500 | 2 | | 2,501 to 3,300 | 3 | | 3,301 to 4,100 | 4 | | 4,101 to 4,900 | 5 | | 4,901 to 5,800 | 6 | | 5,801 to 6,700 | 7 | | 6,701 to 7,600 | 8 | | 7,601 to 8,500 | 9 | | 8,501 to 12,900 | 10 | | 12,901 to 17,200 | 15 | | 17,201 to 21,500 | 20 | | 21,501 to 25,000 | 25 | | 25,001 to 33,000 | 30 | | 33,001 to 41,000 | 40 | | 41,001 to 50,000 | 50 | | 50,001 to 59,000 | 60 | | 59,001 to 70,000 | 70 | | 70,001 to 83,000 | 80 | | 83,001 to 96,000 | 90 | | 96,001 to 130,000 | 100 | | 130,001 to 220,000 | 120 |
Seasonal Start-up requirements, for non-community public water systems (PWS), began in 2016 and are required annually. 401 KAR 8:200 and 40 CFR 141 Subpart Y. The Seasonal Public Water System Start-up Requirements and Checklist form is to be completed before opening to the public, submitted to the Kentucky Division of Water once completed, and retained for site inspections and sanitary surveys. The RTCR/TCR materials provided, while not comprehensive, are an excellent starting point for understanding the rule. For some RTCR/TCR resources, please see the documents, at right, and the links, below. For more information contact the RTCR and TCR Rule Manager: Rodney Ripberger (502) 782-7049. |  RTCR Assessment Triggers Quick Reference1.0.pdf[70 KB]
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