What a Sulfide Test Report Shows for Hillsborough County Water
Laboratory results list sulfide concentration in milligrams per liter (mg/L)
For wells sampled in Hillsborough County's aquifer 112NRSD, sulfide levels ranged from 0.0 to 0.8 mg/L with a median of 0.33 mg/L based on U.S. Geological Survey data from 2010 to 2012. These numbers reflect measurements from 11 separate wells between 14 and 64 feet deep, not any single house's water. No federal thresholds were exceeded in this sampling.
Detected sulfide indicates presence, not safety status
Every sample detected sulfide, which is associated with the rotten-egg odor, but detection alone does not mean the water is unsafe or beyond any aesthetic guidelines. Only testing your household water can confirm your specific level.
How Treated Water Changes at the Tap with Autotrol Technology
Reduction or elimination of sulfur odors
After water passes through the Autotrol Rotten-Egg Sulfur Smell Filter, the sulfur smell is significantly reduced or removed, improving water taste and smell at your taps.
Clearer water without sulfur staining
The system also helps prevent sulfur-related staining on fixtures and laundry, preserving household surfaces.
Household Signs That Suggest Sulfur Odor Issues
Noticeable rotten-egg smell when running water
If you smell sulfur odors coming from faucets, showers, or water heaters, it may indicate sulfide presence in your water supply.
Absence of metallic or chlorine tastes
Sulfur smell without accompanying metallic taste or chlorine hint points more specifically to sulfide rather than other issues.
Lack of visible sediment or discoloration
Sulfur smell often occurs without cloudiness or particulate matter in water, distinguishing it from sediment or turbidity problems.
Distinguishing Sulfur Odor from Commonly Confused Water Problems
Not a result of high iron or manganese
While iron and manganese can cause staining and color changes, they generally do not produce the characteristic rotten-egg smell linked to sulfide.
Different from chlorine or chemical odors
Chlorine smells are sharp or bleach-like, unlike the sulfur smell caused by sulfide compounds.
Not caused by bacterial growth in plumbing
Bacterial contamination usually results in musty or earthy odors, which differ from the sulfur gas scent.
The Role of Plumbing Material and Age in Sulfur Smell Occurrence
Older plumbing may amplify odors
Metallic pipes and older plumbing can sometimes react with sulfide, intensifying the rotten-egg smell.
Plastic plumbing tends to reduce odor transmission
Newer plastic piping is less reactive, helping minimize sulfur odor sensation despite source water content.
Water heater condition affects odor strength
Corroded or poorly maintained water heaters can foster sulfide gas release, increasing odor in hot water supply.
Assessing Treatment Capacity Relative to Household Water Use
Calculate daily water demand in gallons
Understanding your household’s daily water consumption is essential to selecting a treatment system capable of handling the sulfide load efficiently.
Match filter capacity to peak water use times
The system should be sized to treat water during high-demand periods to avoid untreated water reaching taps.
Consider regenerant or filter media life span
Regular replenishment or regeneration maintains consistent sulfur odor removal over time matching household needs.
Fixtures and Appliances Most Affected by Sulfur Odor
Showers and sinks experience odor first
These outlets release hydrogen sulfide gas readily, making the smell most noticeable during water flow here.
Water heaters can concentrate sulfur smell
Hot water often intensifies sulfide odor, so appliances using heated water may emit stronger smells.
Ice makers and coffee machines
Sulfur odor can affect taste and smell in ice and brewed beverages if untreated water is used.
For reliable sulfur odor removal in Hillsborough County homes relying on aquifer 112NRSD, the Autotrol Rotten-Egg Sulfur Smell Filter ships ready to configure and can be matched to your household’s measured daily water demand. Testing your own water confirms sulfide levels and informs the appropriate system size for effective treatment.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2012-11-14. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Sulfide in the 112NRSD aquifer (Hillsborough County): 13 results from 11 wells, median 0.33 mg/L, range 0.0-0.8 mg/L; none above any federal threshold

