What’s in Hillsborough County’s water?
Tampa and county water systems, explained separately.
Hillsborough County has more than one water supplier. City of Tampa, Northwest and South-Central results are shown separately below. Choose the system on your bill before using a report to guide a purchase. Source
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Choose the report for your utility
Hillsborough County operates 11 community water systems. The county report locator can identify the appropriate system by address. City of Tampa is a separate utility and also serves parts of unincorporated Hillsborough.
Match the utility and system on your water bill. A ZIP code or mailing address does not establish service boundaries.
What the reports measured
Browse the selected results by utility. These are substances and indicators—not a count of hazards in your home. Open the linked reports for the complete utility records.
ppm = mg/L; ppb = µg/L; ppt = ng/L. ND means below detection, not zero. MCL and MRDL are regulatory benchmarks reported in the source; action levels trigger system action. Annual averages, individual samples and household-tap percentiles are different measures. Compare like with like.
Sample years stay attached to each result. These historical reports do not replace current utility notices or a test of your tap.
41 report entries
No entries match. Try another search or source.
01City of TampaReported results, sample dates and source links16
| Substance / indicator | Reported result | Benchmark in source | Sample year / source |
|---|---|---|---|
| Chlorine and chloraminesIndividual samples and annual compliance averages are different measures. | 3.6 ppmHighest running annual averageIndividual range: 0.4–5.3 ppm | MRDL 4 ppm | 2025 Source |
| Total trihalomethanes (TTHM) | 19.00 ppbReported running annual averageIndividual range: 5.06–30.53 ppb | MCL 80 ppb | 2025 Source |
| Haloacetic acids (HAA5)Annual averages can include prior-year quarters. | 21.44 ppbReported running annual averageIndividual range: 3.26–18.45 ppb | MCL 60 ppb | 2025 Source |
| Bromate | 3.979 ppbHighest running annual averageIndividual range: 0.530–7.740 ppb | MCL 10 ppb | 2025 Source |
| Lead · household taps · Jan–JunNo sampled sites exceeded the action level in this period. | 0.736 ppb90th percentileIndividual range: ND–6.32 ppb | Action level 15 ppb | 2025 Source |
| Lead · household taps · Jul–DecOne sampled site exceeded the action level; the report marks no system action-level exceedance. | 1.5 ppb90th percentileIndividual range: ND–47.8 ppb | Action level 15 ppb | 2025 Source |
| Copper · household taps · Jan–Jun | 0.287 ppm90th percentileIndividual range: 0.005–0.838 ppm | Action level 1.3 ppm | 2025 Source |
| Copper · household taps · Jul–Dec | 0.253 ppm90th percentileIndividual range: ND–1.12 ppm | Action level 1.3 ppm | 2025 Source |
| Barium | 0.011 ppmHighest detected level | MCL 2 ppm | 2025 Source |
| FluorideHistorical sample; not a claim about current fluoridation. | 0.56 ppmMay sample | MCL 4 ppm | 2025 Source |
| Nitrate · as nitrogen | 0.29 ppmMay sample | MCL 10 ppm | 2025 Source |
| Sodium | 51 ppmMay sample | Source standard 160 ppm | 2025 Source |
| Alpha emitters · including uranium | 1.6 pCi/LApril sample | MCL 15 pCi/L | 2023 Source |
| Combined radium-226 + radium-228 | 0.6 pCi/LApril sample | MCL 5 pCi/L | 2023 Source |
| PFBS · Morris Bridge FacilityPurchased-water sample; not a citywide concentration. MRL is a reporting level, not a safety limit. | 0.0030 ppbSeptember result | MRL 0.003 ppb | 2025 Source |
| PFPeA · Morris Bridge FacilityPurchased-water sample; not a citywide concentration. | 0.0037 ppbSeptember result | MRL 0.003 ppb | 2025 Source |
02Hillsborough NorthwestReported results, sample dates and source links12
| Substance / indicator | Reported result | Benchmark in source | Sample year / source |
|---|---|---|---|
| Chloramines | 3.2 ppmReported annual compliance resultIndividual range: 0.2–5.3 ppm | MRDL 4 ppm | 2025 Source |
| TTHM | 45.7 ppbReported annual compliance resultIndividual range: 11.9–41.8 ppb | MCL 80 ppb | 2025 Source |
| HAA5 | 33.1 ppbReported annual compliance resultIndividual range: 8.4–31.7 ppb | MCL 60 ppb | 2025 Source |
| Barium | 0.015 ppmReported levelIndividual range: 0.011–0.015 ppm | MCL 2 ppm | 2025 Source |
| Fluoride | 0.72 ppmMarch sampleIndividual range: 0.60–0.72 ppm | MCL 4 ppm | 2025 Source |
| Nitrate · as nitrogen | 0.17 ppmMarch sampleIndividual range: 0.04–0.17 ppm | MCL 10 ppm | 2025 Source |
| Inorganic mercury | 0.002 ppbReported levelIndividual range: ND–0.002 ppb | MCL 2 ppb | 2025 Source |
| Sodium | 28 ppmReported levelIndividual range: 19–28 ppm | Source standard 160 ppm | 2025 Source |
| Tetrachloroethylene | 0.28 ppbReported levelIndividual range: ND–1.1 ppb | Source MCL 3 ppb | 2025 Source |
| Combined radium | 0.95 pCi/LMarch sampleIndividual range: 0.78–0.95 pCi/L | MCL 5 pCi/L | 2020 Source |
| Lead · household taps | 0.75 ppb90th percentileIndividual range: ND–12 ppb | Action level 15 ppb | 2023 Source |
| Copper · household taps | 0.76 ppm90th percentileIndividual range: 0.01–0.92 ppm | Action level 1.3 ppm | 2023 Source |
03Hillsborough South-CentralReported results, sample dates and source links13
| Substance / indicator | Reported result | Benchmark in source | Sample year / source |
|---|---|---|---|
| Chloramines | 3.8 ppmReported annual compliance resultIndividual range: 0.03–6.8 ppm | MRDL 4 ppm | 2025 Source |
| TTHM | 17.2 ppbReported annual compliance resultIndividual range: 7.1–21.2 ppb | MCL 80 ppb | 2025 Source |
| HAA5 | 12.1 ppbReported annual compliance resultIndividual range: 1.9–6.7 ppb | MCL 60 ppb | 2025 Source |
| Bromate | 2.9 ppbReported annual compliance resultIndividual range: ND–9.9 ppb | MCL 10 ppb | 2025 Source |
| Barium | 0.03 ppmReported levelIndividual range: 0.008–0.03 ppm | MCL 2 ppm | 2025 Source |
| Fluoride | 0.73 ppmMarch sampleIndividual range: 0.61–0.73 ppm | MCL 4 ppm | 2025 Source |
| Nitrate · as nitrogen | 0.28 ppmReported levelIndividual range: 0.20–0.29 ppm | MCL 10 ppm | 2025 Source |
| Sodium | 39 ppmReported levelIndividual range: 23–39 ppm | Source standard 160 ppm | 2025 Source |
| Tetrachloroethylene | 0.15 ppbReported levelIndividual range: ND–0.58 ppb | Source MCL 3 ppb | 2025 Source |
| Combined radium | 0.82 pCi/LMarch sampleIndividual range: ND–0.82 pCi/L | MCL 5 pCi/L | 2020 Source |
| Lead · household taps | 0.66 ppb90th percentileIndividual range: ND–1.3 ppb | Action level 15 ppb | 2023 Source |
| Copper · household taps | 0.43 ppm90th percentileIndividual range: 0.004–0.68 ppm | Action level 1.3 ppm | 2023 Source |
| E. coli · compliance eventA total-coliform-positive repeat followed an E. coli-positive routine sample. The county reports subsequent negative E. coli samples and completion of four corrective actions after a Level 2 assessment. This historical event is not a current boil-water notice. | MCL violation reported August event | See source explanation | 2025 Source |
A closer look at your local water
These results describe City of Tampa Water Department (FL6290327), not every home or water system in Hillsborough County. Match this system to your water bill before using the results.
Source record: CITY OF TAMPA WATER DEPARTMENT · Selected test records: 2014-07-16 – 2025-12-01
Results come from different testing periods. A detection is not, by itself, a finding that water is unsafe. “Not detected” means below the test’s reporting level; it does not mean zero. Missing results mean we have not verified that data here.
PFAS monitoring8 of 29 tested PFAS compounds detected
The table shows each compound’s highest reported result and latest listed test date. Those may come from different samples. Results are in parts per trillion (ppt).
| Substance | Highest reported result | Latest listed test | Detected samples |
|---|---|---|---|
| PFOS | 6.9 ppt | 5 | |
| PFOA | 4.6 ppt | 2 | |
| PFPeA | 8.4 ppt | 8 | |
| PFBS | 6.4 ppt | 8 | |
| PFBA | 6.4 ppt | 4 | |
| PFHxA | 6 ppt | 7 | |
| PFHxS | 4.1 ppt | 3 | |
| PFHpA | 3.9 ppt | 1 |
Lithium monitoringNot detected
MyTapWater reports lithium was tested and not detected. Selected lithium sample dates: 2023-01-09 – 2025-09-11
More tested substances4 selected entries
Selected historical tests, with their original dates. “Detected” means at least one positive result in the listed period. “Below reporting level” means all retrieved samples for that entry were below the reporting level. These older tests do not describe today’s water at your tap.
| Substance | Reported result | Sampling period |
|---|---|---|
| strontium | Detected | – |
| vanadium | Detected | – |
| molybdenum | Below reporting level | – |
| testosterone | Below reporting level | – |
This is a selection of results from MyTapWater, which compiles public water-system records. Open the source for the complete tables, methods and reporting limits. Check your utility’s latest report and current notices for updates. Source
A list of tested substances is not a list of what a filter removes. Choose a system using its verified contaminant-reduction specifications and your water source. A softener addresses hardness and remains optional.
Do you need a water softener?
No. Softening is optional and is a separate decision from filtration. Use a home hardness test and your preferences about scale and water feel; your plumber confirms equipment size and settings.
City of Tampa guidance gives a seasonal hardness range of 140–300 mg/L as CaCO₃ (about 8–17 gpg). This range does not describe every Hillsborough County system. Softening is an optional choice for scale and water feel; measure your incoming water to confirm sizing and settings. Source
Hardness describes dissolved minerals, not an overall water safety score. A filter and a softener do different jobs. Source
Use my water and home detailsCity of Tampa · undated utility FAQ · checked October 2, 2026
Use the source and period shown here. Confirm your supplier and test incoming water before an existing home softener. Source
Softening is an optional choice for scale and water feel.
A filter, a softener, or both?
Choose the job you need done. Size comes next, based on water use and peak flow.
Whole-home filter
For whole-home filtration goals. Match the exact system’s performance claims to the substances you want to address.
A filter alone does not replace a hardness-removing softener.
Whole-home softener
Optional for hard-water scale and water feel. A softener removes hardness minerals; it is not a general contaminant-removal system.
A softener does not replace a filter selected for a specific contaminant.
Filter + softener
Choose both when filtration and hardness are separate priorities. You can start with the filter in the home-matching flow.
Both units require maintenance, space and a suitable installation.
Proposed pricing. Installation, shipping and tax are additional. Purchases are paused during the pilot. You hire and pay your plumber directly.
For drinking water alone, a suitable kitchen-tap filter may be enough. Keep working equipment that already meets your goal. Wells, shared plumbing and unusually high demand need a separate assessment. No Clearhouse system is claimed to remove every substance in this report. Source
Choose equipment using model-specific performance evidence and maintain it as instructed. Removing disinfectant throughout a home also changes microbial protection in the plumbing. Source
Your water report is the start. Your home decides the fit.
A few household details help narrow the size. Your street address is optional, and “I’m not sure” is always an option.
- Confirm the name on your water bill.
- Share bathrooms, household size and existing equipment.
- Choose a system. Hire your own plumber.
Want help choosing?
Send your water goals to Clearhouse for a fit review.
Common questions
Does a Tampa mailing address mean I use City of Tampa water?
No. Check the supplier on your water bill. If it is Hillsborough County Water Resources, use the county report locator to identify your system. The City of Tampa figures should only guide customers supplied by that utility. Source
Is a water softener required?
No. Softening is optional and is a separate decision from filtration. Use a home hardness test and your preferences about scale and water feel; your plumber confirms equipment size and settings.
Does this report test my home?
No. Utility reports describe particular systems and sample periods. Plumbing, service lines and treatment already in a home can change the result at the tap.
Will one whole-home filter remove everything listed?
No. Select equipment by its specific tested or certified reduction claims and rated flow. A long contaminant list is not evidence that a particular system removes every item.
Sources & methodology
We transcribe selected utility results and retain sample dates, units, sampling basis and source links. We separate regional supply samples from local distribution data and flag source inconsistencies. Missing data are not treated as non-detections.
Clearhouse sells water treatment equipment and is not a utility or testing laboratory. Report presence alone does not establish a health risk, a need for treatment or a product’s removal performance.
- City of Tampa · 2025
- Hillsborough Northwest · 2025
- Hillsborough South-Central · 2025
- Other county systems · report locator
- Source · USGS
- Source · CDC
- MyTapWater · City of Tampa Water Department · FL6290327 · Source reviewed October 3, 2026