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Who We Serve
HouseholdsTest water for lead and PFAS in individual homes
CommunitiesTest water across neighborhoods and entire states
Schools and Child Care CentersEliminate contaminants in schools, from pre-K to higher education
Water UtilitiesSample public water supply users for lead, copper, and PFAS
Facilities and OrganizationsEnsure safe workplaces and maintain compliance
ResearchersLocate and understand sources of contamination
Services
Test Water in HouseholdsIndividual residents can test for lead in water with our by-mail sampling kits
Test Water at Any ScaleOrganizations can test for lead and PFAS in water across facilities, cities, and states
Comply with LCR UpdatesWater utilities can comply with Lead and Copper Rule sampling requirements
Resources
View DataExplore results in our data dashboards
About
About RTI CleanPlus
Our Team
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Our Programs
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EnrollJoin one of our existing programs
Water TestingOrder kits and see results
Utility ServicesAccess your data portal
RTI CleanPlus™
3040 E Cornwallis Rd
P.O. Box 12194
Durham, NC 27709
USA

© 2025 | RTI International. RTI International is a trade name of Research Triangle Institute. RTI and the RTI logo are U.S. registered trademarks of Research Triangle Institute.

Water glass in hand

Identify and Eliminate Exposure to Contaminants Where You Live, Learn, Work, and Play.

Trust Your Tap: RTI CleanPlus offers expert guidance, mail-order sampling kits, integrated laboratory testing, and actionable results to help you address common contaminants, from lead and copper to PFAS.

Looking to test your water for contaminants? We've got you covered.

From signup to solutions, we will guide you through the process—ensuring clean water and peace of mind.
Get Started
Clean Classrooms for Carolina KidsClean Classrooms for Georgia KidsOther Grant-Funded Programs
Test Water in Single Households, Whole Facilities, and Entire States
A mother and child at the sink

For Individual Households

Order single sampling kits to test your water for lead and PFAS. The experts at RTI International are available to walk you through what to do if contaminants are found.

Household Water Testing
A suburban street

For Organizations

Order sampling kits in bulk, so you can test across facilities, cities, and states. No matter whether you're a single school, a state agency, or nationwide enterprise, our approach to water sampling works at any scale.

Sampling Programs
Water pipes in a trench

For Water Utilities

Water utilities can satisfy Lead and Copper Rule sampling requirements for all households, schools, and child care centers. Our data portal and integrated laboratory give you control over all your sampling efforts.

Utility Services

Trusted by Our Partners

RTI CleanPlus is an award-winning program you can depend on.

Harvard Kennedy School Belfer Center for Science and International AffairsThe Roy Award for Environmental PartnershipMutual of American Financial GroupEnvironmental Business International, Inc.

Household Water Testing

CleanPlus

Test lead in water with our nonprofit laboratory and expert support

If we find it, we can fix it. Feel empowered with results-driven solutions to improve your water quality.

Utility Services

CleanPlus

Comply with Lead and Copper Rule updates and sampling requests

We offer an all-in-one service from signup to solutions for utilities to meet updated LCR requirements and respond to customer sampling requests.

Sampling Programs

CleanPlus

Test water at any scale

We work with organizations of all kinds to test water for lead, PFAS, and more.

Communities

CleanPlus

Test water across entire neighborhoods and communities

Our award-winning program lets organizations order kits in bulk and supports participants from signup to solutions.

Schools and Child Care Centers

CleanPlus

Eliminate exposure to lead where children learn and play

Our award-winning program provides an opportunity to eliminate exposure to lead for facilities, including private schools, that have not been tested in state programs.

Facilities and Organizations

CleanPlus

One water testing solution for universities, businesses, and larger facilities

Our expert team and robust data portal let you track all sampling, results, and mitigation in one place.

Research Services

CleanPlus

We help researchers find contaminants in water, soil, dust, and more

We are here to help you locate and understand environmental contaminants wherever they appear.

A Simple Process with Comprehensive Solutions

Whether it’s for a single home, a whole city, or entire states, RTI CleanPlus offers low-cost, scalable solutions for water quality improvements and compliance. Here’s how it works.

Get In Touch

We're known for identifying lead in water and other common chemicals. Schedule a consultation or call today to speak with the RTI International team about how RTI CleanPlus can help you identify and eliminate exposure to contaminants.

Collect Samples

We show you how to collect samples and ship them back to us, with easy-to-follow instructions. It’s as simple as turning on your tap.

View Your Results

When sampling across multiple facilities and locations, our easy-to-use portal gives your team a centralized way to track samples, monitor progress, and view results.

Find Solutions, Get Support

We handle all the communication and coordination needed. For organizations, we offer guidance on how to communicate about risks and mitigation.

Get started today.