Form
Approved OMB
No. 0920-xxxx
Exp.
Date xx/xx/201x
Data Dictionary for Data Submission Drinking Water Quality (PWS Inventory, Sampling Results) National Environmental Public Health Tracking Network |
|
Characteristic |
Description |
Data Sources |
Safe Drinking Water Act/State Drinking Water Information System (SDWA/SDWIS),or SDWIS-like Data System |
Purpose |
This data set contributes to the Environmental Public Health Tracking Network. The EPHT cooperative agreement states that “by September 30, 2008 […all grantees must] track and make available core environmental health tracking measures on the State and National EPHT Network […including …] data/information on key water contaminants, as defined through the Content workgroup process.” The Content Workgroup Water Team identified initial contaminants of concern for the national EPHT program, identified nationally consistent data sources, and developed nationally consistent indicators and measures. This data set can be used to calculate the nationally consistent measures for the initial contaminants of concern.
This data set contains the information needed to calculate Environmental Public Health Tracking (EPHT) measures of contaminants in public water supply for arsenic, disinfection byproducts, nitrates, atrazine, di(2-ethylhexyl) phthalate (DEHP), radium, tetrachloroethene (tetrachloroethylene) (PCE), trichloroethene (trichloroethylene (TCE), and uranium. Data are derived from state Safe Drinking Water Act databases. The data set consists of two tables:
1. PWS Inventory. This file is required and contains descriptive and locational information about each public water system (PWS) with which water quality data is provided. This dataset should only include Community Water Systems (CWS) as defined and regulated by the Safe Drinking Water Act. It does not include Non-Transient Non-Community (NTNC) and Transient Non-Community water systems (TNC). There is one record for every year that a CWS was active, delivering drinking water to customers, and in which water quality data is complete. CWS that were once active and are currently inactive should be included if State's data support this scenario.
2. Drinking Water Quality Sampling Results. This file is required and contains one record for each community water system (CWS) for the mean and maximum concentrations per year of each of arsenic, disinfection byproducts, nitrates, atrazine, di(2-ethylhexyl) phthalate (DEHP), radium, tetrachloroethene (tetrachloroethylene) (PCE), trichloroethene (trichloroethylene) (TCE), and uranium; and the mean concentrations per quarter of disinfection byproducts, nitrates and atrazine. This dataset also accommodates sample-level data and includes one record for each compliance sample for the same analytes used in calculating summary concentrations. Some fields (e.g. NumSamplingStations) are only included for summary-level data observations and belong to the schema group “SummaryLevelGroup”. Other fields (e.g. DetectionLimit) are only included for sample-level data observations and belong to the schema group “SampleLevelGroup”. At this time, Sample-level observations are not required as part of the Community Drinking Water data submission; Associated optional fields for sample-level data are indicated as such in the Optionality column. |
Restrictions |
This is not a restricted access data set. |
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as xxx minutes/hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-0853).
CDC estimates the average public reporting burden for this collection of information as 120 hours per response, including the time for reviewing instructions, searching existing data/information sources, gathering and maintaining the data/information needed, and completing and reviewing the collection of information. An agency may not conduct or sponsor, and a person is not required to respond to a collection of information unless it displays a currently valid OMB control number. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to CDC/ATSDR Information Collection Review Office, 1600 Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA (0920-xxxx).
PWS Inventory
Header |
|
|
|
|
Field Name/SchemaName |
Field Description |
Optionality |
Format |
Allowed Values |
StateFIPSCode |
State FIPS code |
Required |
AN(2) |
FIPS State Code |
Table Core |
|
Optionality |
|
|
SchemaName |
Field Description |
|
Format |
Allowed Values |
PWSIDNumber |
PWS identifier |
Required |
AN(9) |
nine character value consisting of the 2 letter state abbreviation followed by 7 numbers |
YearAssociatedTo |
Year that these data are associated with regards to sampling results |
Required |
Text(4) |
YYYY. 1999 through latest complete year (e.g. 2011) |
YearPulled |
Year that these data were pulled from state records |
Required |
Text(4) |
YYYY. 1999 through latest year. |
PWSName |
Name of PWS |
Required |
AN(40) |
Any; “U” = Unknown; “NS” = Not submitted |
PrincipalCountyServedFIPS |
Principal county FIPS served by the CWS |
Required |
AN(5) |
Any; “U” = Unknown; “NS” = Not submitted |
PrincipalCityFeatureID |
Principal city, town or village Feature ID served by the CWS |
Required |
N(10) |
9999999999;”-999” for Missing; “-888” for Not Submitted Feature ID can be obtained from: http://geonames.usgs.gov/domestic/download_data.htm |
TotalConnections |
Number of residential service connections |
Required |
N(7) |
1-9999999” |
SystemPopulation |
Permanent population uniquely served by the CWS |
Required |
N(8) |
10-99999999 ” |
PrimarySourceCode |
Type of source |
Required |
AN(3) |
GU = ground water under direct influence of surface water, GUP = purchased ground water under direct influence of surface water, GW = ground water, GWP = purchased ground water, SW = surface water, SWP = purchased surface water; “U” = Unknown; “NS” = Not submitted |
Latitude |
Latitude in NAD83 decimal degrees describing approximate center of retail service area of water system |
Required |
N(10) |
00.0000000 to 90.000000;”-99.99” for Missing; “-88.88” for Not Submitted. |
Longitude |
Longitude in NAD83 decimal degrees describing approximate center of retail service area of water system |
Required |
N(11) |
-180.000000 to 180.000000;”-999” for Missing; “-888” for Not Submitted. |
LocationDerivationCode |
Code describing how approximate latitude/longitude location was derived |
Required |
AN(3) |
SA = Service area polygon centroid; MFL = Mean of 1 or more facility locations that are expected to be proximate to service area extent; PCS = GNIS coordinates for Principal City Served; GSH = The geocoded address of water system headquarters; PNS - GNIS coordinates for Principal County Served; O= Other (e.g. zip code, etc.) “-999” = Missing; “-888” = Not Submitted; (See “Appendix A. Service Area Location Derivation Guidance of the How-To Guide” on EPHTN Share Point site for more information & guidance for deriving water system locations.)
|
Drinking water quality sampling results
Header |
|
|
|
|
|
Field Name/SchemaName |
Field Description |
Optionality |
Schema Group |
Format |
Allowed Values |
StateFIPSCode
|
State FIPS code |
Required |
NA |
AN(2) |
FIPS State Code |
Table Core |
|
|
|
|
|
SchemaName |
Field Description |
Optionality |
Schema Group |
Format |
Allowed Values |
PWSIDNumber |
PWS identifier |
Required |
NA |
AN(9) |
Nine character value consisting of the 2 letter state abbreviation followed by 7 numbers |
Year |
Year |
Required |
NA |
Text(4) |
YYYY; 1999 through latest complete year (e.g. 2011) |
AnalyteCode |
USEPA Analyte code for required constituents (arsenic, nitrate, TTHM, HAA5, atrazine, PCE, TCE, DEHP, radium, and uranium) |
Required |
NA |
N(4) |
1005=Arsenic; 2050=Atrazine; 2456=HAA5; 2950=TTHM; 2039=DEHP; 1040=Nitrate; 2987=PCE; 2984=TCE; 4010=Combined Radium 226 & 228; 4006=Uranium (see How-To-Guide for converting gross alpha particle activity to U in ug/L) |
ConcentrationUnits |
The analyte-specific units of summary-level measures and individual sample values as reported in the Concentration and DetectionLimit fields. Each analyte has a standard unit for this dataset. |
Required |
NA |
AN(6) |
“ug/L” allowed only for (Arsenic, TTHM, HAA5, Atrazine, DEHP, PCE,TCE, uranium); “mg/L” allowed only for (Nitrate as nitrogen); “pCi/L” allowed only for (Radium) |
Concentration |
Reported summary-level concentration or reported concentration of sample |
Required |
NA |
6.4
|
>0 for summary-level measure or sample-level concentration; -888, if sample-level data and NonDetectFlag=1 |
DateSampled |
Date of sample (sample-level data) or Date last sampled (summary-level data) |
Required |
NA |
YYYY-MM-DD |
A valid date from 1/1/1999 through December 31st of the latest complete year (e.g. 2011-12-31). |
SamplePointID
|
Sampling station identifier for sample-level records only.
|
Optional |
SampleLevelGroup |
AN(20) |
Character ID for sampling station;”-999” for missing; “-888” for Not Submitted |
DetectionLimit |
Sample detection limit |
Optional |
SampleLevelGroup |
3.6
|
>0, if NonDetectFlag=1; -888, if NonDetectFlag=0. |
NonDetectFlag |
Flag to indicate whether sample resulted in a detection or not |
Optional |
SampleLevelGroup |
N(1) |
1=Sample was a non-detect; 0=Sample was a detection |
AggregationType |
The type of summary operation performed (i.e. mean or max) for summary-level data. |
Required |
SummaryLevelGroup |
AN(3) |
“X” = Mean (for Annual and Quarterly data); “MX” = Maximum (For Annual Data ONLY; DO NOT SUBMIT FOR QUARTERLY DATA |
NumSamplingLocations |
Number of compliance sampling locations available from which summary-level records were derived. |
Required |
SummaryLevelGroup |
N(4) |
1-9999; “-888” for Not Submitted |
SummaryTimePeriod |
Year or Quarter for summary-level data |
Required |
SummaryLevelGroup |
AN(10) |
YYYY for annual summarized values; YYYY-Q for quarterly summarized values Allowed Only for AnalyteCodes 2050, 2456, 2950 and 1040 |
NumSamples |
The number of samples that were used in calculating the mean/max for a given analyte during a quarter or year. |
Required |
SummaryLevelGroup |
N(4) |
1-XXXX |
NumNonDetects |
The number of samples that were non-detections for summary-level data. |
Required |
SummaryLevelGroup |
N(4) |
0-XXXX (XXXX must be no greater than NumSamples) |
CDC
estimates the average public reporting burden for this collection of
information as
xxx minutes/hours per response,
including the time for reviewing instructions, searching existing
data/information sources, gathering and maintaining the
data/information needed, and completing and reviewing the collection
of information. An agency may not conduct or sponsor, and a person
is not required to respond to a collection of information unless it
displays a currently valid OMB control number. Send comments
regarding this burden estimate or any other aspect of this
collection of information, including suggestions for reducing this
burden to CDC/ATSDR Information Collection Review Office, 1600
Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA
(0920-0853).
CDC
estimates the average public reporting burden for this collection of
information as
xxx minutes/hours per response,
including the time for reviewing instructions, searching existing
data/information sources, gathering and maintaining the
data/information needed, and completing and reviewing the collection
of information. An agency may not conduct or sponsor, and a person
is not required to respond to a collection of information unless it
displays a currently valid OMB control number. Send comments
regarding this burden estimate or any other aspect of this
collection of information, including suggestions for reducing this
burden to CDC/ATSDR Information Collection Review Office, 1600
Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA
(0920-0853).
CDC
estimates the average public reporting burden for this collection of
information as
xxx minutes/hours per response,
including the time for reviewing instructions, searching existing
data/information sources, gathering and maintaining the
data/information needed, and completing and reviewing the collection
of information. An agency may not conduct or sponsor, and a person
is not required to respond to a collection of information unless it
displays a currently valid OMB control number. Send comments
regarding this burden estimate or any other aspect of this
collection of information, including suggestions for reducing this
burden to CDC/ATSDR Information Collection Review Office, 1600
Clifton Road NE, MS D-74, Atlanta, Georgia 30333; ATTN: PRA
(0920-0853).
Page
File Type | application/msword |
File Title | DW Data Dictionary |
Author | dvq3 |
Last Modified By | Office of Science |
File Modified | 2016-04-02 |
File Created | 2016-01-21 |