Seminole County Utilities, City of Sanford, City of Lake Mary and other city systems
Water in Seminole County
Seminole County has several separate water providers. The county runs 11 service areas, and cities like Sanford and Lake Mary operate their own plants. Your bill tells you which report to read.
Communities: Sanford · Lake Mary · Altamonte Springs · Longwood · Oviedo · Casselberry
Where your water comes from, per official reports
- Seminole County Utilities publishes one report divided into 11 service areas, with a map to find yours. [1]
- Lake Mary draws from six wells in the Upper Floridan Aquifer. It treats the water with UV advanced oxidation using hydrogen peroxide, granular activated carbon and chlorination. [2]
- Sanford publishes updates on 1,4-dioxane in some of its wells and is planning treatment-plant upgrades for 1,4-dioxane and PFAS. [3]
What a utility report can't tell you about your home
- Utility updates on emerging contaminants describe the whole system. If you're concerned, a certified lab test at your own tap is the only way to know your home's levels.
- Interconnections between systems mean the water source can change during repairs. Taste or odor changes are worth noting.
What we check during your free in-home visit
- Hardness and TDS
- Chlorine taste and odor
- Guidance on certified lab testing if you're concerned about PFAS or 1,4-dioxane
An in-home test is a screening, not a certified laboratory analysis or a statement that water is safe to drink. For urgent concerns, follow your utility's official notices or contact your county health department.
Treatment options to compare after testing
Related reading
Frequently asked questions
Is Sanford's water safe to drink?
The City of Sanford states its water is safe to drink based on state and federal guidelines, and it posts ongoing updates. Follow the city's official notices. Our free test does not replace them.
Can a home system reduce PFAS?
Some reverse osmosis and carbon systems are certified to reduce specific PFAS. Look for certification for the exact compounds, and confirm with lab testing.
Which report applies in Longwood or Oviedo?
It depends on the provider on your bill. It could be a city system or a Seminole County Utilities service area.
Sources
Official sources reviewed October 2026. Reports are updated yearly, so always check the latest edition.