Households in Anne Arundel County, MD face the decision of how to address chromium-6—also known as hexavalent chromium or chromium(VI)—in their water supply. This decision involves understanding the local water conditions, the chemistry of chromium-6, and matching treatment capacity to household demand. This page guides you through factors influencing this decision using EPA monitoring data for the Glen Burnie-Broadneck public water system and explains how to approach choosing treatment options.
If Chromium-6 in Anne Arundel County Water Is From Geogenic Sources
Chromium-6 can naturally occur in groundwater, especially in aquifers with certain geologic and chemical conditions, including arid or alkaline environments. Anne Arundel County water is supplied from groundwater sources, with EPA records showing chromium-6 detections in the Glen Burnie-Broadneck system at levels from 0.03 to 0.14 micrograms per liter (µg/L), or parts per billion (ppb). These detections reflect naturally occurring background presence rather than industrial contamination. Understanding the source helps set realistic expectations for treatment complexity and potential changes over time.
If You Consider the Changes in Chromium Oxidation State From Well to Tap
Chromium changes oxidation states between the groundwater source, the distribution main, and your household tap. Chromium-6 is the oxidized form and can convert to chromium(III), which is less mobile and less bioavailable. This transformation depends on water chemistry factors such as pH, oxygen levels, and organic matter. Since sampling reflects points in the system, your actual home's chromium-6 concentration can differ due to in-home plumbing conditions. Testing your own water is essential to understand what chromium forms you are exposed to.
If You Need to Match Treatment Capacity to Your Household’s Daily Water Demand
Choosing the right treatment involves assessing how much water your household uses each day. Treatment equipment must handle your peak and average flow rates without compromising performance. For chromium-6, technologies vary in their capacity, so matching equipment scale to your usage prevents inadequate treatment or unnecessary expense. Large families, frequent entertaining, or high water use for gardening or pools increase demand to consider.
If You Want to Rule Out Other Factors Before Testing
Before ordering laboratory analyses, start with simple checks such as reviewing your water provider’s most recent water quality reports and any published EPA data. Glen Burnie-Broadneck’s report shows no health-based violations for chromium or chromium-6. If you notice staining, metallic taste, or discoloration, these may signal other issues that overlap with chromium but require different remedies. Confirming basic water chemistry parameters—like pH and total dissolved solids—helps narrow potential causes prior to expensive testing.
If You Know How Public Water System Records Differ From Private Well Testing
EPA data for the Glen Burnie-Broadneck system represents the supply to over 83,000 connections serving nearly 291,000 people. This system-wide data provides a general profile of chromium-6 occurrence but cannot substitute for testing the water at your particular tap. Private wells are subject to different influences such as nearby industrial activity or groundwater chemistry variations and require individual sampling. Public system records do not assess home plumbing effects on chromium speciation or concentration.
If Your Household Is Large, a Second Home, or a Seasonal Property
Larger households or seasonal properties have different water use patterns affecting treatment sizing and maintenance schedules. Infrequent use can lead to stagnant water, potentially altering chromium forms or concentration at the tap. Extra capacity and attention to system flushing may be needed for vacation homes. For large families, equipment designed for higher volume flows ensures chromium-6 contact time and treatment effectiveness. Adjusting treatment capacity to actual household usage prevents underperformance.
Given these considerations, the single best next step is to have your household’s water tested specifically for chromium-6 concentration and total chromium levels at the tap. This laboratory result will confirm local exposure and inform the scale and type of water-treatment technology to select. When a treatment device is appropriate, the Pentair Chromium-6 Filter ships ready to configure and addresses chromium(VI) through proven ion exchange methods suited to household demands and local water chemistry.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2014-08-06. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR3 monitoring (2013-2015) for Glen Burnie-Broadneck (MD0020017), MD: 48 results across 2 listed contaminants, 18 detections above the reporting level; no federal MCL for hexavalent chromium; total chromium MCL 100 ug/L