Oxidation State Changes: From Source to Tap in Riverton
Chromium appears in multiple chemical forms, but hexavalent chromium (also called chromium-6 or Cr(VI)) is a particular oxidation state known for its mobility in water. In the Riverton public water system, which draws from surface water sources, Cr(VI) can undergo chemical changes as water moves through treatment plants and distribution pipes. Processes such as oxidation and reduction in these stages alter chromium's form but typically do not eliminate it entirely. Household water is delivered downstream after these transformations, making the water's chromium-6 state subject to this chemical progression.
How Chromium-6 Enters Fremont County’s Water Supply
In Riverton, chromium-6 detected in the municipal water system stems mainly from natural geological sources leaching into surface waters, as well as potential industrial or urban runoff. The EPA’s monitoring from 2013 to 2015 detected chromium-6 in surface water supplied to the city, with some measurements above the reporting threshold but well below regulatory total chromium limits. This indicates that chromium-6 is present in trace amounts common in many surface water bodies rather than from a single contamination event.
Maintenance Rhythm of the Pentair Chromium-6 Filter
The Pentair Chromium-6 Filter, designed for residential use, ships ready to configure with household plumbing setups. Once put into operation, it typically requires periodic cartridge replacements or media refreshes recommended by the manufacturer. This routine maintenance happens on a schedule based on usage and water quality indicators but does not necessitate specialized service visits. Keeping up with this schedule ensures sustained performance in reducing chromium-6 concentrations at the point of use.
Measured Chromium-6 Levels Versus Federal Standards
The highest chromium-6 concentration reported in the City of Riverton’s EPA public water system record was 0.079 micrograms per liter (µg/L or ppb), detected in a limited number of samples. Notably, there is no federal Maximum Contaminant Level (MCL) set specifically for hexavalent chromium. The total chromium MCL applicable is 100 µg/L, a far higher threshold. Therefore, these chromium-6 results do not signify any regulatory violations or safety exceedances. They provide data reflecting presence, not unsafe levels.
Purpose and Limits of the 2013-2015 UCMR3 Nationwide Survey
The Unregulated Contaminant Monitoring Rule 3 (UCMR3) collected extensive data from public water systems, including Riverton, to understand emerging contaminants like chromium-6. It was designed to gather occurrence statistics across the country rather than to evaluate compliance or individual household risk. Individual homes may have different chromium-6 levels due to plumbing materials or private well conditions, which this survey does not address. Testing a home's water directly is necessary to determine its specific chromium-6 status.
Additional Considerations for Commercial and Industrial Users
Unlike residential consumers, commercial and industrial operators typically must account for regulatory reporting requirements, potential process impacts, and higher water volumes. Their concerns might include the effect of chromium-6 on equipment corrosion, product quality, or wastewater discharge standards. While household treatment focuses on user safety and taste, larger users often need more detailed water chemistry analysis and compliance strategies tailored to operations.
Summary: This overview explains what chromium-6 data from the Riverton public water system reveals and clarifies its significance against regulatory standards. Households uncertain about their water quality can consider direct testing and may look to technologies like the Pentair Chromium-6 Filter to address detected chromium-6 at the tap.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2013-08-05. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for City of Riverton (WY5600047), WY: 66 results across 2 listed contaminants, 4 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.