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September 9, 2019 01:52
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Finding local data from the massive dump of water quality studies referenced in this [article](https://www.hsph.harvard.edu/news/press-releases/toxic-chemicals-drinking-water/)
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# There are lots of "one-liner" scripts out to grab this data, but this isn't one | |
# this is broken apart to make it easier to follow along with and adjust as needed | |
# download raw data at https://www.epa.gov/sites/production/files/2015-09/ucmr-3-occurrence-data.zip | |
# extract it and update the two paths below, or just run this from the extracted directory. | |
$zipFile ="UCMR3_ZipCodes.txt" | |
$AllFile = "UCMR3_All.txt" | |
# replace these zip codes with ones you are interested in | |
[string[]] $ZipCodes = @('48103','28401') | |
$resultsHeader = (Get-Content -Path $AllFile | select -First 1 ) -split "`t" | |
$found = Select-String -Pattern $ZipCodes -Path $zipFile -AllMatches -SimpleMatch | |
$Locations = $found.Line |%{$t = $_ -split "\s";[pscustomobject]@{PWSID = $t[0];Zip=$t[1]}} | |
$Results = (Select-String -Pattern $Locations.PWSID -Path $AllFile -SimpleMatch -AllMatches ).line | ConvertFrom-Csv -Delimiter "`t" -Header $resultsHeader | |
#$Results # $Results contains the raw results with all of the data in nice objects to work with | |
# If you want to show a quick table of the relevant results | |
$DisplayProperties = @('AnalyticalResultsSign','Contaminant','PWSName','AnalyticalResultsValue') | |
$Results | Sort-Object 'AnalyticalResultsSign' -Descending | ft -AutoSize -Property $DisplayProperties |
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