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Protocol - Water Source

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Protocol Name from Source:

The Iowa Study of Environment and Health; National Health and Nutrition Examination Survey, 2005-2006

Availability:

Publicly available

Description:

The respondent is asked a series of questions about the home's source of drinking water, such as if the water comes from a community's supply or a private well, the depth of the well, if the well is cased, and whether water filtration/treatment devices are used.

Protocol:

1. What was the primary source of drinking water [at your current residence]? (Only indicate one below)

1 [ ] Private Well (Continue)

2 [ ] Community Supply (Go to #4)

3 [ ] Bottled Water (Go to #4)

4 [ ] Other (Specify) ___________________ (Go to #4)

2. What was the depth of the private well? (Only indicate one below)

1 [ ] Less than 50 Feet

2 [ ] 50-100 Feet

3 [ ] 151-250 Feet

4 [ ] 251-500 Feet

5 [ ] 501 Feet or More

9 [ ] Don’t Know

3. Was the private well cased? (Only indicate one below)

1 [ ] Cased

2 [ ] Not Cased

9 [ ] Don’t Know

4. Are any of the water treatment devices listed on this card used in your home?

1 [ ] YES

2 [ ] NO

7 [ ] REFUSED

9 [ ] DON’T KNOW

5. Which of these water treatment devices are now used in your home?

REFER TO HAND CARD Q4

CODE ALL THAT APPLY

1 [ ] BRITA OR OTHER PITCHER WATER FILTER

2 [ ] CERAMIC OR CHARCOAL FILTER

3 [ ] WATER SOFTENER

4 [ ] AERATOR

5 [ ] REVERSE OSMOSIS

7 [ ] REFUSED

9 [ ] DON’T KNOW

Personnel and Training Required

The interviewer must be trained to conduct personal interviews with individuals from the general population. The interviewer must be trained and found to be competent (i.e., tested by an expert) at the completion of personal interviews.*

* There are multiple modes to administer this question (e.g., paper-and-pencil and computer-assisted interviews).

Equipment Needs

The source instruments were developed to be administered via paper-and-pencil and a computer-assisted interview. The PhenX Working Group acknowledges these questions can be administered in either method. Computer software is necessary to develop computer-assisted instruments. The interviewer will require a laptop computer or handheld computer to administer a computer-assisted questionnaire.

Requirements

Requirement CategoryRequired
Average time of greater than 15 minutes in an unaffected individualNo
Major equipmentNo
Specialized requirements for biospecimen collectionNo
Specialized trainingNo

Mode of Administration

Self-administered

Life Stage:

Adult

Specific Instructions:

None

Research Domain Information

Release Date:

May 31, 2016

Definition

Questions asking about the drinking water source and use of water filtration systems in the respondent’s home.

Purpose

Some water sources contain contaminants and disinfection byproducts that may adversely affect a person’s health. Public (municipal) water systems receive disinfection and other treatments that may remove some contaminants to comply with the Environmental Protection Agency (EPA) drinking water regulations. Private wells are not regulated by EPA and can contain high levels of potentially dangerous chemicals such as arsenic, nitrate, and pesticides. The likelihood that a private well has contaminants differs by well depth, well construction, location, and characteristics of the soil and aquifer. Additional information about the type of water filtration system used by the household is also valuable because the effectiveness of contaminant removal varies by type of filtration system.

Selection Rationale

A protocol that includes questions about the water source and filtration systems provides more detailed information about the potential contaminants of the respondent’s drinking water.

Language

English, Spanish

Standards

StandardNameIDSource
Common Data Elements (CDE)Person Home Water Source Text2954138CDE Browser
Logical Observation Identifiers Names and Codes (LOINC)Environ exp water source proto62516-0LOINC

Process and Review

The [link[phenx.org/node/102|Expert Review Panel #2]] (ERP 2) reviewed the measures in the Demographics, Environmental Exposures, and Social Environments domains.

Guidance from ERP 2 includes:

• Revised descriptions of the measure

Back-compatible: no changes to Data Dictionary

Previous version in Toolkit archive ([link[www.phenxtoolkit.org/index.php?pageLink=browse.archive.protocols&id=60000|link]])

Source

Lynch, C. Iowa Study of Environment and Health. Iowa City, IA: University of Iowa Medical School. Next-of-Kin Questionnaire, Question numbers 11–13 (source for Questions 1–3 in Protocol Text).

Centers for Disease Control and Prevention, National Center for Health Statistics. National Health and Nutrition Examination Survey. NHANES 2005–2006. Housing Characteristics Questionnaire, Question numbers HOQ.080, HOQ.083 (source for Questions 4 and 5 in Protocol Text).

General References

U.S. Environmental Protection Agency. (2006). Ground water and drinking water: Drinking water standards. Washington, DC: Author.

Protocol ID:

60201

Variables:

Export Variables
Variable NameVariable IDVariable DescriptionVersiondbGaP Mapping
PX060201_Drinking_Water_SourcePX060201010000What was the primary source of drinking water [at your home]?4Variable Mapping
PX060201_Drinking_Water_Source_Other_SpecifyPX060201010100What was the primary source of drinking water [at your home]?4Variable Mapping
PX060201_Water_Treatment_UsagePX060201040000Are any of the water treatment devices listed on this card used in your home? (Brita or other pitcher water filter, Ceramic or charcoal filter, Water softener, Aerator, Reverse osmosis)4N/A
PX060201_Water_Treatment_CurrentPX060201050000Which of these water treatment devices are now used in your home? (Brita or other pitcher water filter, Ceramic or charcoal filter, Water softener, Aerator, Reverse osmosis)4N/A
PX060201_Well_DepthPX060201020000What was the depth of the private well?4N/A
PX060201_Well_CasedPX060201030000Was the private well cased?4N/A