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Coverage

56,681 of 56,681 columns decided — 100.0% · 12,642 bound (22.3%) · 0 still unread

Bound: 12,642; 22.3%; a concept was found and asserted for the column.
Refused: 32,953; 58.1%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 11,086; 19.6%; read, but the evidence did not settle it.
Unanalysed: 0; 0.0%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 11, 2026, 12:00 PM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 0 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

Adding Chemicals to Water Supply Permits

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← What we have understood · Dataset page

Fields catalogued

Understood

Checked, no match

Nobody has looked

Every field decided — Every field carries a verdict — which does not mean every field is understood.

Every field in this dataset

Covered and uncovered alike, in the order the publisher lists them. A field with no verdict is one nobody has looked at yet.

Field	Type	What we know	Meaning	How it was decided	Shared term
zipcode Zipcode	Text	Checked, no match	—	value_domain_read	—
permit_number Permit_Number	Text	Checked, no match	—	value_domain_read 2000010201×180; 2000013948×176	—
bbl BBL	Text	Understood	place.bbl Borough-Block-Lot	value_domain_read	bbl
nta_code NTA_Code	Text	Understood	place.nta Neighborhood Tabulation Area	value_domain_read	nta
expiration_date Expiration_Date	Calendar date	Understood	time.period.month Month	value_profile Date the permit expires	—
borough Borough	Text	Checked, no match	—	value_domain_read	—
address_no Address_No	Text	Checked, no match	—	dictionary_read House number of the physical location of the drinking water tank(s)	—
community_district Community_District	Text	Understood	place.community_district Community District / Board	value_domain_read	community_district
longitude Longitude	Number	Understood	geometry.longitude Longitude	dictionary_read_underspecified Longitude	—
status Status	Text	Checked, no match	—	value_domain_read top[2]={Historical×160; Current×15}	—
latitude Latitude	Number	Understood	geometry.latitude Latitude	dictionary_read_underspecified Latitude	—
city_council_district City_Council_District	Text	Understood	place.council_district City Council District	value_domain_read	council_district
business_name Business Name	Text	Checked, no match	—	dictionary_read if an individual, the person’s first name and last name	—
address_st Address_St	Text	Checked, no match	—	dictionary_read House number of the physical location of the drinking water tank(s)	—
city City	Text	Checked, no match	—	value_domain_read LONG ISLAND CITY×14; NEW YORK×14; ASTORIA×12; WILKINSBURG×12	—
state State	Text	Checked, no match	—	value_domain_read LONG ISLAND CITY×14; NEW YORK×14; ASTORIA×12; WILKINSBURG×12	—
bin BIN	Text	Understood	place.bin Building Identification Number	operator_cohort matched by name, unread	bin
census_tract_2010 Census_Tract_2010	Text	Checked, no match	—	value_domain_read	—