The Effect of Information about Lead Service Lines on Exposure Belief and Avoidance Expenditure: Evidence from an Information Provision Experiment in New York City

Last registered on October 28, 2024
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Pre-Trial

Trial Information

General Information

Title
The Effect of Information about Lead Service Lines on Exposure Belief and Avoidance Expenditure: Evidence from an Information Provision Experiment in New York City
RCT ID
AEARCTR-0014639
Initial registration date
October 23, 2024

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
October 28, 2024, 1:10 PM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

Country
United States of America
Region
New York City

Primary Investigator

Name
Fanyu Wang
Affiliation
Columbia University
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Other Primary Investigator(s)

PI Name
Siyuan Hu
PI Affiliation
University of Wisconsin-Madison
Contact Investigator

Additional Trial Information

Status
On going
Start date
2024-10-15
End date
2024-11-15
Keywords
Behavior, Environment & Energy
Additional Keywords
JEL code(s)
Q53
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
Lead service lines (LSLs) remain prevalent in the United States. Notably, the New York City Water System ranks third among public water systems regarding the number of LSLs. This study will conduct an information provision experiment in NYC using an online survey. Both the treatment and control groups will answer questions about their beliefs regarding whether their homes have LSLs and their WTP for kitchen tap water lead concentration inspections before and after the information intervention. The treatment group will be provided with information on whether their building's service lines are made of lead. This study will investigate how receiving building-specific LSL information maintained by a government agency would affect one’s belief about LSL exposure and willingness to pay (WTP) for water lead inspection.
External Link(s)

Registration Citation

Citation
Hu, Siyuan and Fanyu Wang. 2024. "The Effect of Information about Lead Service Lines on Exposure Belief and Avoidance Expenditure: Evidence from an Information Provision Experiment in New York City ." AEA RCT Registry. October 28. https://doi.org/10.1257/rct.14639-1.0
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Provide building-specific information about the presence of lead service line.
Intervention (Hidden)
Intervention Start Date
2024-10-15
Intervention End Date
2024-11-15

Primary Outcomes

Primary Outcomes (end points)
Individual belief about whether their home has lead service line and the confidence level of this belief. Individual's willingness to pay for water lead inspection.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Both the treatment and control groups will answer questions about their beliefs regarding whether their homes have LSLs and their WTP for kitchen tap water lead concentration inspections before and after the information intervention. The treatment group will be provided with information on whether their building's service lines are made of lead.
Experimental Design Details
Randomization Method
Randomization done through Qualtrics randomizer.
Randomization Unit
Individual respondents of the survey.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
1000 respondents.
Sample size: planned number of observations
1000 respondents.
Sample size (or number of clusters) by treatment arms
500 respondents control, 500 respondents treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
University of Wisconsin-Madison Minimal Risk Research IRB
IRB Approval Date
2024-10-10
IRB Approval Number
2024-1461
Analysis Plan

Post-Trial

Post Trial Information

Study Withdrawal

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Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials