Water filters and home visits aim to cut arsenic poisoning in native communities
NCT ID NCT03725592
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study provides American Indian households in North and South Dakota with a special water filter to remove arsenic from their drinking water, plus extra educational visits to help families use it correctly. The goal is to see if this combined approach can lower the amount of arsenic in people's urine, which is a sign of exposure. The trial involves 57 households and is currently active but not recruiting new participants.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- arsenic removal device and educational visits
- What this could lead to
- If successful, this could provide a practical, community-based method to reduce arsenic exposure and related health risks in affected households.
- What could go wrong
- This is a small, early-stage study with only 57 households, so results may not apply broadly. The device requires proper maintenance, and long-term health benefits are not yet proven.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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57 people
The number who actually took part.
- Started
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Jul 2018
- Expected to finish
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May 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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10 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Arsenic levels in household drinking water must be ≥10 µg/L * Households must have ≥1 adult ≥18 years of age eligible and willing to participate. * Household must have an active well on the property that is used for drinking water. * Household must have indoor plumbing and a permanent heat source. * Participant must plan to reside in the household for the next year, must reside in the residence for ≥4 days/week, and year round (i.e. all seasons). * ≥1 household members must identify as American Indian. * Household must be willing to grant study members access to the interior of their household for screening and data collection. Exclusion Criteria: * Arsenic levels in household drinking water \<10 µg/L * Households with no adult ≥18 years of age eligible and willing to participate. * Households without an active well on the property that is used for drinking water (i.e. connected to municipal water supply). * Households without indoor plumbing and/or a permanent heat source. * Participant planning to reside in the household \<1 year, residing in the residence for \<4 days/week, or not year round (i.e. not during all seasons). * No household member identifies as American Indian. * Household unwilling to grant study members access to the interior of their household for screening and data collection.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Johns Hopkins Bloomberg School of Public Health, ICTR
Baltimore, Maryland, 21202, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.