Understanding Arsenic in Groundwater
Arsenic is a naturally occurring contaminant found in groundwater throughout many regions of Massachusetts and New Hampshire, especially in areas with bedrock aquifers. Because arsenic has no taste, color, or odor, homeowners with private wells cannot detect it without proper laboratory testing. If your property relies on a drilled, artesian, or bedrock well, routine arsenic testing is essential to ensure your water is safe to drink.
Where Does Arsenic in Groundwater Come From?
Arsenic (As), atomic number 33, is a semi-metallic element that exists naturally in soil and rock formations in many parts of the U.S. In New England, geological conditions make arsenic a common groundwater contaminant—particularly in central Massachusetts and the Merrimack River Valley.
In addition to natural deposits, arsenic can also enter the environment through human activities, including:
- Historic apple orchard pesticide use
- Coal ash disposal
- Certain types of pressure-treated wood
- Industrial processes such as paint, dye, metal, herbicide, and pesticide manufacturing
Arsenic was even used in embalming fluids in the late 1800s–early 1900s, leading to elevated levels in soil near older cemeteries. Because arsenic dissolves easily in water and is impossible to detect without testing, routine well-water analysis is the only reliable way to identify contamination.
Where Arsenic Is Commonly Found Today
Roughly 90% of industrial arsenic use is tied to wood preservation, but it can also be present in:
- Paints and pigments
- Pharmaceuticals
- Detergents and soaps
- Agricultural chemicals
- Insecticides and herbicides
- Glass manufacturing
- Landfills and industrial disposal sites
Even though many modern industries have reduced arsenic use, its persistence in the environment means well owners must remain vigilant.
Health Risks of Arsenic Exposure
Arsenic is classified as a Group 1 carcinogen, meaning extended exposure can significantly impact human health. Because it interferes with cellular longevity and function, symptoms of arsenic poisoning may include:
- Headache or confusion
- Nausea, vomiting, diarrhea
- Drowsiness or fatigue
- Blood in urine
- Changes in fingernail pigmentation
- Seizures or convulsions
- Long-term exposure is associated with:
- Increased cancer risk
- High blood pressure
- Nervous system complications
- Multi-organ damage
- Coma or death in severe cases
If you suspect arsenic exposure, seek medical attention immediately.
How Arsenic Exposure Is Diagnosed
Healthcare professionals may test:
- Blood
- Urine (best for recent exposure)
- Hair and fingernails (best for long-term exposure)
Your physician or a toxicology specialist can recommend appropriate testing and treatment options.
Arsenic Removal & Water Filtration Solutions
The EPA’s Maximum Contaminant Level (MCL) for arsenic in drinking water is 0.010 mg/L (10 ppb). If your well exceeds this standard, treatment is required.
Northeast Water Wells, Inc. provides several effective arsenic remediation options, including:
- Adsorption media systems
- Ion exchange filtration
- Coagulation and filtration
- Oxidation and advanced filtration
- Point-of-use reverse osmosis systems
Our team will test your water, identify the best treatment solution, and install a long-term system that ensures safe, clean drinking water.
Schedule Arsenic Testing or Filtration Services
If you own a private well in Massachusetts or New Hampshire, regular arsenic testing is essential for protecting your family’s health. Contact Northeast Water Wells, Inc. to schedule water testing or learn more about our arsenic removal systems.
We’re here to help you get the clean, safe water your home or business deserves.