Harmful Algal Bloom (HAB) Monitoring
Public water systems with a surface water source(s) must comply with HAB monitoring and reporting rule requirements (OAC 3745-90-03). Public water systems may be eligible for reduced monitoring, based on cyanotoxin occurrence and treatment capability. Please click the links, below, to view the HAB monitoring schedule assignments for each public water system and the HAB monitoring requirements by schedule.
Additional information is provided in the 2019 HAB Season Webinar and 2019 PWS Response Strategy.
2019 HAB OFF-SEASON MONITORING: MICROCYSTINS AND CYANOBACTERIA SCREENING (QPCR) SAMPLING WEEK (SCHEDULES 1 & 2)
For PWS collecting Microcystins only, please sample during the off week of your assigned cyanobacteria screening week. For PWS electing to sample for qPCR, please continue sampling during your qPCR week. To find your district office, please visit https://epa.ohio.gov/Contact.
As an example, Public water systems located in Ohio EPA’s Northeast, Southeast, and Central district must collect their first 2019 HAB off-season microcystins sample the week of November 3rd.
Public water systems located in Ohio EPA’s Northwest and Southwest district must collect their first 2019 HAB off-season microcystins sample the week of November 10th.
PWS that do not qualify for reduced monitoring must continue monitoring for microcystins weekly. PWS must have two consecutive weeks with no microcystins detection in raw or finished water to be eligible for monitoring reductions.
Please contact your district HAB coordinator with any questions.
Section Manager (Colin White) – (614) 644-2759
Section Supervisor (Emilie Eskridge) – (614) 644-2765
State HAB Specialist (Ruth Briland) – (614) 369-4045
HAB Compliance (Marissa Ganzfried) – (614) 644-3140
Central District (Bridgette Marchio) – (614) 728-3870
Northeast District (Chris Maslo) – (330) 963-1164
Northwest District (Ben Sloan) – (419) 419-3718
Southeast District (Jessica Dingman) – (740) 380-5236
Southwest District (Brian Chitti) – (937) 204-1199