If you live in Sacramento County and notice something unusual about your tap water, you may be trying to understand if chromium-6, also known as hexavalent chromium or chromium(VI), is a factor. Residents served by the Sacramento Suburban Water District get water sourced from surface supplies, which has been monitored for chromium-6 by federal surveys though not specifically for their home’s water.
Understanding California’s 10 µg/L Chromium-6 Guideline and Its Regional Meaning
California’s public health goal for chromium-6 is set at 10 micrograms per liter (µg/L), equal to 10 parts per billion (ppb)
This limit is a guideline aiming to balance water quality with technical feasibility of treatment across the state
Since federal regulations have not established an MCL (maximum contaminant level) for chromium-6, this state guideline offers a basis for concern but not a legal limit
How Chromium-6 Chemistry May Change from Water Source to Tap
Chromium-6 exists in water mostly as a dissolved ion, which can transform depending on local water chemistry
Oxidation states can shift during treatment or distribution; chromium-6 may convert to other chromium forms, affecting detectability
Public water system measurements reflect source water samples rather than household tap water directly
What You Should Record Before Seeking Treatment Advice
Obtain a certified laboratory analysis of your own household water for chromium-6 levels; local system data cannot substitute for this
Note the date and location of the sample, as chromium-6 levels may vary over time and within distribution zones
Consider water source type and any recent changes in local water quality reports from the Sacramento Suburban Water District
How Chromium-6 Enters Water Systems in Sacramento County
Surface water sources supplying the Sacramento Suburban Water District can contain chromium-6 at varying levels detected in federal monitoring
Industrial activity, natural geologic formations, and historic inputs all influence chromium-6 presence; concentrations vary regionally
Routine water treatment and environmental factors affect chromium-6 concentrations before water reaches the distribution network
Additional Considerations for Commercial or Industrial Water Users
Higher volumes and specific processes may require more detailed chromium-6 monitoring beyond residential needs
Commercial operators often manage water procurement differently and may need tailored treatment approaches
For any Sacramento County household concerned about chromium-6, the essential step is to order a laboratory test of your own tap water, specifically for hexavalent chromium. Receiving a precise value in micrograms per liter or parts per billion will clarify whether further action is warranted. When treatment is desired, the Autotrol Chromium-6 Filter ships ready to configure as a documented method for addressing chromium(VI) in residential water.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2015-08-19. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Sacramento Suburban Water District (CA3410001), CA: 244 results across 2 listed contaminants, 239 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L
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