Ohio EPA Update Division of Drinking and Ground Waters Jeff Davidson, SWDO 6/26/2015 DDAGW Historical Events 1974 Safe Drinking Water Act established 1978 State Drinking Water Primacy Granted 1978 Cincinnati installs GAC because of VOC/DDBP concerns 1982 Disinfection required at all community systems 1985 Sherwin Williams Fire occurred in Daytons wellfield DDAGW Historical Events 1986 Non transients Non Communities regulated 1987 Division of Ground Water created 1988 Drought effects water systems 1991 Surface Water Treatment Rule 1992 Wellhead Protection Program developed 1993 Milwaukee Crypto Outbreak DDAGW Historical Events 1994 Transient Non Community systems regulated 1996 Drinking Water State Revolving Loan Fund created 1997 Drinking Water Plants affected by Flood 2000 Y2K 2000 Walkerton, Ontario Ecoli. O157 Outbreak /11/2001 Terrorist attack on Twin Towers 2001 LT1 SWTR 2003 Northeast Blackout 2004 South Bass Island Waterborne Disease Outbreak 2006 Avian Flu preparedness begins based on outbreak in Hong Kong 2006 Arsenic MCL established DDAGW Historical Events 2008 Drinking Water responses to Wind Storm damage 2009 HABs become contaminates of concern at Grand Lake St. Marys 2010 Road Salt contaminates Camdens wellfield 2010 Groundwater Rule 2010 LT2 SWTR 2014 Toledo HAB Do Not Drink advisory 2016 Revised Total Coliform Rule Harmful Algal Blooms PWS HAB Testing Grants $20,000/Public Water System Eligible Items: Equipment for ELISA testing: Microtiter plate reader spectrophotometer, single and Multi (8) channel pipettes, pipette tips, plate covers, reagent basins, vials and glassware, test kit for Microcystin (ADDA) and other cyanotoxins. Datasonde with any or all of the following sensors: Phycocyanin, Chlorophyll, Conductivity, Temperature, and pH. Additional equipment associated with datasonde use: wiper system for sensors, handheld device for data viewing, and connector cables. Datasonde installation and telemetry. Buoy costs are also eligible. Sampling equipment: integrated depth sampler, Van Dorn sampler, Wisconsin-sampler/phytoplankton nets. Microscope Training HAB Health Advisory Levels Microcystin 0.3 ug/l for infants to school age children 1.6 ug/l for school age and adults Cylindrospermopsin 0.7 ug/l for infants to school age children 3.0 ug/l for school age and adults Anatoxin 20 ug/l Saxitoxin 0.2 ug/l Revised Total Coliform Rule Effective Date - April 1, 2016 MCL for Monthly Total Coliform Eliminated Uses a Find and Fix Approach New MCL for E. coli Treatment Technique - Level 1 or Level 2 Assessments Historical View E. coli was identified as the preferred fecal indicator as early as the 1890s; Most E. coli are not pathogenic, and do not grow in natural water environments criteria of a good indicator. No quick test was available for E. coli, but a media based TC test was available; Thus, TC was used it was the available, practical fecal indicator. Subsets of Coliform in the Microbial World Doug Owen, 9/2007 Presentation Treatment Technique Triggers > 5.0% TC+ for PWS taking 40 or more samples/mo 2 or more TC+ for PWS taking