City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Thonotosassa, Florida.
Median indexed hardness
331PPM
2 indexed ZIPs
Range 301–360 PPM
City summary
Thonotosassa has 2 published ZIP profiles across Hillsborough County. The indexed median is 331 PPM, compared with 280 PPM across Florida.
Among the 290 Floridacities with an indexed median, Thonotosassa ranks #87from highest to lowest. Across all 603 state ZIP profiles, available estimates run from 20to 374.5 PPM.
The 301–360 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jan 13, 2016 to May 26, 2026.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID FL6294612
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6291684
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6290157
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6290728
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6294856
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6290227
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6295183
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6290279
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6291988
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID FL6291481
The system names this served city; Census place overlap links the city to this ZCTA.
Compliance history
No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.
| Record | System | Period | Status |
|---|---|---|---|
| Revised Total Coliform Rule | FL6291104 | Mar 1, 2026 | Archived |
| E. COLI | FL6291104 | Mar 1, 2026 | Archived |
| Revised Total Coliform Rule | FL6291104 | Feb 1, 2026 | Archived |
| E. COLI | FL6291104 | Feb 1, 2026 | Archived |
| Public Notice | FL6291104 | Dec 4, 2025 | Resolved |
| E. COLI | FL6291104 | Sep 1, 2025 | Resolved |
| Revised Total Coliform Rule | FL6291104 | Sep 1, 2025 | Resolved |
| Lead and Copper Rule | FL6291988 | Jul 1, 2025 | Resolved |
| E. COLI | FL6291104 | Jul 1, 2025 | Resolved |
| Revised Total Coliform Rule | FL6291104 | Jul 1, 2025 | Resolved |
Practical next steps
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Questions people ask
The indexed city median is 331 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.
Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.
Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.