Arsenic in well water: how to test for it and remove it
Arsenic is natural in some groundwater. Here's the fix.
Arsenic occurs naturally in some groundwater, especially in private and small shared wells. Here's how to test for it and which filters reduce it.
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You're probably on this page because:
- You're on a well and have never tested for arsenic
- You heard about arsenic in your area
You can't see or taste it. You can test for it.
Arsenic, by the numbers
- 10 parts per billion: the federal limit for arsenic in public water.
Sources: EPA.
Where it comes from
Natural rock and soil, mostly in groundwater.
What reduces it
- Certified RO for drinking water
- Specialty media for whole-house treatment
Life with it vs. without
| Without it | With it |
|---|---|
| Guessing what's in your water | Knowing, and fixing it |
Our take
Arsenic comes in two forms, and it matters
This is the stuff our customers ask us most, after 20+ years and [thousands] of systems sold.
Arsenic shows up as two types, often called arsenic III and arsenic V. Some treatment works better on one than the other, so the right system depends on which form and how much.
That's why we test first and build from the result, not from a generic filter.
Written by people who install these every day
20+ years in water. No fluff, just how it really works.
- 20+ years in water
- Our own patents
- We supply other water companies
- [Thousands] of systems sold
- Licensed installers
Written by [Name], [title], [20+] years in water treatment. Reviewed by [Licensed plumber name], license # [#]. Last updated [date]. Sources: listed under each "By the numbers" block and linked in the copy
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Questions people ask
Does reverse osmosis remove arsenic?
Certified RO reduces it.
How do I test for arsenic?
Lab test. [Confirm our lab.]
Is arsenic in city water?
Utilities must keep it under 10 ppb.
Does boiling remove arsenic?
No.
Can a softener remove arsenic?
Not reliably.
Is arsenic common in Florida wells?
[Cite state data.]