Guthries Sunshine Park
What EPA’s and Florida’s records show in this utility’s water: nitrate, arsenic and other regulated chemicals; lead and copper; and violations since 2016, with the certification that handles each result.
- Serves
- 40 people
- Connections
- 20
- Water source
- Groundwater
- Based in
- Thonotosassa, FL
- County
- Hillsborough
- Owner
- Private
The ZIP code it serves
The short answer
1 result is above the health goal. The worst: Uranium, above the health goal. No health-based violations on file since 2016.
What handles itWhat was found
Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), arsenic and fluoride: Florida’s own results, samples taken from Sept. 10, 2020 to Dec. 2, 2024, with EPA’s 2012 to 2019 file for earlier years.
Uranium: EPA’s compliance monitoring file, samples taken from Dec. 9, 2015 to May 10, 2018. Newer results are in the utility’s annual water quality report.
Above the health goal1
Uranium
Comes from the source
0.39ppb
Highest yearly average, 2015 to 2018
Averaged by year, the highest was 0.39 ppb, in 2018: below EPA’s legal limit of 30 ppb, but above its health goal of zero. That was also the latest year on file.
What handles it
- NSF/ANSI 58 look for “Uranium”
Below EPA’s limits4
Nitrate
Comes from the source
8.4ppm
Highest sample; found in 7 of 7
2024 average: 4.4 ppm
The highest sample, in 2021, was 8.4 ppm, below EPA’s legal limit of 10 ppm. In 2024, the latest year on file, its two samples averaged 4.4 ppm. Earlier, from 2012 to 2019, EPA’s file shows a highest sample of 5.3 ppm, in 2018.
What handles it
- NSF/ANSI 58 look for “Nitrate/Nitrite Reduction”
- NSF/ANSI 53 look for “Nitrate/Nitrite (30 ppm challenge)”
Haloacetic acids (HAA5)
Forms or is added in treatment
24.3ppb
Highest yearly average, 2021 to 2024
2024, one sample: 0.85 ppb
Averaged by year, the highest was 24.3 ppb, in 2021, below EPA’s legal limit of 60 ppb. In 2024, the latest year on file, its one sample was 0.85 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 28.6 ppb, in 2012.
What handles it
No certification claim covers this compound yet.
Total trihalomethanes (TTHM)
Forms or is added in treatment
17.1ppb
Highest yearly average, 2021 to 2024
2024, one sample: 1.1 ppb
Averaged by year, the highest was 17.1 ppb, in 2021, below EPA’s legal limit of 80 ppb. In 2024, the latest year on file, its one sample was 1.1 ppb. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 45.6 ppb, in 2012.
What handles it
- NSF/ANSI 53 look for “Trihalomethanes (TTHM) Reduction”
- NSF/ANSI 58 look for “Trihalomethanes (TTHM) Reduction”
Chromium (total)
Comes from the source
1.0ppb
Highest yearly average, 2021 to 2024
2024: not found
Averaged by year, the highest was 1.0 ppb, in 2021, below EPA’s legal limit of 100 ppb. In 2024, the latest year on file, it wasn’t found in its one sample. Earlier, from 2012 to 2019, EPA’s file shows a highest yearly average of 9.5 ppb, in 2015.
What handles it
- NSF/ANSI 58 look for “Chromium (Hexavalent) Reduction”
- NSF/ANSI 53 look for “Chromium Reduction”
3 compounds tested and not foundBelow the reporting level in every sample. Not found is not the same as zero.
- Arsenic
- Fluoride
- Lead
What handles it
A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”
- NSF/ANSI 58
Claim: Uranium
For: Uranium
At the tap, or for the whole house?
These come with the water itself, so a whole-house system certified for the same claims treats every tap and shower. A filter at the tap treats drinking water for much less. How whole-house systems compare.
Filters with those claims on a certifier’s listing
None of the filters TapBuff has checked so far carry these claims. Search the certifier listings for the claim above.
Compare five-year costsViolations since 2016
No health-based violations on file with EPA since 2016.
What this report can’t tell you
Everything else. Nitrate, haloacetic acids (HAA5), total trihalomethanes (TTHM), chromium (total), arsenic and fluoride results here are Florida’s own from 2020 on, with EPA’s national file for 2012 to 2019. Uranium comes from EPA’s file alone, which ends in 2019. Guthries Sunshine Park’s own annual report, which it must send you every year, has newer results for those and the contaminants this page does not show.
Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
What it means for your health. This page reports what the records show and EPA’s limits and goals; it is not medical advice. If you are worried about a health effect, talk to a doctor or your local health department.
Anything after the latest data. SDWIS data is from 2026 Q3; UCMR 5 didn’t sample this utility; Florida’s results run from Sept. 10, 2020 to Dec. 2, 2024; EPA’s compliance samples are from Dec. 9, 2015 to May 10, 2018.
Testing your own tap
The 3 labs Florida certifies closest to the area Guthries Sunshine Park serves, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Advanced Environmental Laboratories, Inc. - Tampa
Tampa, FL · about 13 miles
Certified for bacteria, lead and copper, minerals and other inorganics, organic chemicals, disinfection byproducts
Hillsborough County Environmental Laboratory
Tampa, FL · about 13 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
KNL Environmental Testing
Tampa, FL · about 14 miles
Certified for bacteria, radioactivity
Florida Department of Health Bureau of Public Health Laboratories: Coliform and E. coli testing for private wells at the Jacksonville and Miami labs. Collection kits come from your county health department, and the sample has to reach the lab on ice the same day it is collected. $40 for private testing through the state lab. Well Water Testing, Florida Department of Health.
All 212 certified labs for FloridaSources
- EPA UCMR 5 occurrence data, file of Oct. 15, 2026
- EPA SDWA bulk download (SDWIS federal data), 2026 Q3
- Florida Department of Environmental Protection, Drinking Water Program, results from Jan. 2, 2020 to Dec. 31, 2024, read Oct. 8, 2026
- EPA Six-Year Review 4 compliance monitoring data, 2012 to 2019, file of Feb. 5, 2024
- Certified labs: Florida Department of Health Environmental Laboratory Certification Program, drinking water labs, as listed in TNI LAMS, read Oct. 11, 2026; distances from the Census 2020 ZIP code tabulation area gazetteer
- Limits and goals: each contaminant’s page, with its EPA source.
- How this page is built: methodology.
PWSID FL6291529. Rebuilt from EPA data on Oct. 18, 2026.
What to do next
- Read up on UraniumWhat each one does to health, where it comes from, and the certification claim that addresses it.About Uranium
- Get the utility’s own reportGuthries Sunshine Park must send you a water quality report every year. It covers contaminants this page does not show, and has newer results than EPA’s national file for the ones here that come from it.How to read it
- Test your own tap for leadYour service line, solder and fixtures decide the lead at your faucet, not the utility’s average.Lead in your water: what to do
- Compare certified filtersWhat the filters certified for these results cost over five years, cartridges included.Compare five-year costs