Environmental Services

Update Regarding Northwest Service Area Precautionary Boil Water Notice

Seminole County Environmental Services issued a precautionary boil water notice on Saturday, October 3, 2015, due to a temporary reduction of pressure at the Markham Water Treatment Plant. The precautionary boil water notice was lifted on October 7, 2015.

Seminole County Environmental Services followed Florida Department of Environmental Protection and Florida Department of Heath protocol, and took additional measures to ensure the safest water was available to residents and businesses by issuing the voluntary and precautionary boil water notice.

Upon the temporary reduction of pressure, Seminole County Environmental Services quickly began the collection and testing of water samples. Samples were sent to a certified laboratory to demonstrate potable water is free of disease-causing organisms.  A Total Coliform test was performed- which analyzes water quality for sanitation impurities.

Initial results produced a positive presence of Total Coliform, organisms prolific in soil and plant material. A presence of Total Coliform does not necessarily imply contamination or the presence of sanitation-based health risks.

Esherichia Coli (E. Coli), a subset of the coliform group which is an indicator of fecal matter, was tested in addition. Tests for E. Coli produced negative results, signifying no presence of E. Coli, nor any eminent risks in Seminole County’s potable water throughout the entire testing process and duration of the precautionary boil water notice.

In compliance with Department of Environmental Protection regulations, consecutive sampling and testing occurred and a precautionary boil water notice was advised until a complete absence of Total Coliform was achieved.
Seminole County strives to provide the highest quality of services and water quality, as demonstrated through extensive laboratory analysis and precautionary measures. By exceeding minimum standards for notification and testing, Seminole County Environmental Services delivered the highest level of safety to its customers and residents.


The Environmental Services Department provides the services that you rely on every day such as clean, quality drinking water, wastewater collection and treatment, irrigation supply, recycling, and trash .

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