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By the USA Water Company team
Orlando Utilities Commission has drawn from the Lower Floridan Aquifer since 1957, about a quarter of a mile below the surface. Depth protects that supply from the surface pollution that affects rivers and lakes, but it also means the water sits in limestone for a long time and comes up hard. OUC treats with ozone rather than relying on chlorine alone, which strips out the hydrogen sulfide responsible for the rotten egg smell Central Florida is known for.
Water utilityOrlando Utilities Commission (OUC), plus separate county and city systems across Orange, Seminole, Osceola and Brevard
SourceThe Lower Floridan Aquifer, used by OUC since 1957, drawn from roughly a quarter mile below the surface
DisinfectantOzone, introduced under OUC’s Water Project 2000. It reduces chlorine use and removes hydrogen sulfide, the compound behind that rotten egg smell.
HardnessNot published for individual addresses. Our free in-home test measures it at your tap.
Ozone handles the smell, not the hardness. OUC’s ozone treatment is why Orlando city water does not smell of sulfur. It does nothing about dissolved calcium, which is what leaves scale on your fixtures.
Outside OUC the water changes. Toho Water, Orange County Utilities and the Seminole and Brevard systems each draw and treat their own supply. Your zip decides who serves you.
Wells are a different problem. Private wells across Central Florida regularly show iron and sulfur. Those are the orange stains in a toilet tank and the rotten egg smell at the tap.
Checked against the utility’s own published reports, October 2026.
Dots are towns our Orlando technicians cover. Map is approximate.
Our Orlando, Florida technicians cover Kissimmee, Winter Park, Winter Garden, Apopka, Lake Nona, Sanford, Altamonte Springs, Oviedo, Clermont, St. Cloud, Celebration, Dr. Phillips, Maitland and the Space Coast.
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