Adding Chemicals to Water Supply Permits
The Adding Chemicals to Water Supply permit is required for persons who engage in the business of chemically treating the drinking water supply within a building. This permit allows chemicals to be added only for anti-corrosion, anti-scaling or disinfection purposes. This dataset contains a list of current permittees who may add chemical treatment to a building's drinking water in New York City. To learn more about this permit program and related health code, please visit https://www.nyc.gov/nycbusiness/description/adding-chemicals-to-water-supply-permit Data is collected to track the adding chemicals to water supply permits issued by DOHMH and is managed by the Office of Public Health Engineering. This data can be used to find a company or individual that has a current adding chemicals to water supply permit in New York City. It can also be used to verify the permit for a business or persons that engages in the business of chemically treating the drinking water supply in a building.
Open in the graph · Relate this dataset · What these columns mean
Freshness
The publisher's promise
How the agency that publishes this data says it keeps the data current.
Fresh
- Says it updates
- Annually
- Actually updates about every
- —
- Publisher last updated the data
- Jul 15, 2026
Our mirror
Whether our copy of this data is current with the source.
In sync
- We last synced
- Jul 15, 2026, 10:10 AM
- Rows in our copy
- 175
- Rows at the source
- 175
- Our copy trails the source by
- under a minute
Columns
Each source column, with the name and type we use to store it.
5 of 18 columns carry a concept; 17 carry a description from the publisher. Read the concept column before you join. A column with no concept carries no claim from us, and a name that looks like a key is not one.
| Source field | Display name | What the publisher says it is | Concept | Source type | Stored as | Stored type | Row identifier | Unit |
|---|---|---|---|---|---|---|---|---|
zipcode | Zipcode | Zipcode where the business's premise is located. | Not bound | Text | zipcode | text | — | |
permit_number | Permit_Number | Permit number | Not bound | Text | permit_number | text | — | |
bbl | BBL | Borough-Block-Lot | bbldeclared | Text | bbl | text | — | |
nta_code | NTA_Code | Neighborhood Tabulation Area | ntadeclared | Text | nta_code | text | — | |
expiration_date | Expiration_Date | Date the permit expires | Not bound | Calendar date | expiration_date | timestamp | — | |
borough | Borough | Borough where the business is located. | Not bound | Text | borough | text | — | |
address_no | Address_No | Building number of the business's premise address. |
Download
This file was produced on Aug 29, 2026, 10:10 PM.
Refresh this dataset
Source and attribution
Where this data comes from, which version we hold, and what we changed.
- Source
- https://data.cityofnewyork.us/d/v8i9-yfpr
- Version
- Content hash:
f6c42350dfad0d14b087d3730f7a6a119c99dfa7915bee5bc28baefec44dd0fd - What we changed
- We did not change the data. We stored it as published.
- Publisher
- codenownyc
- We retrieved it
- Jul 15, 2026, 10:10 AM
Update history
| Started | Kind | Result | Rows written | Produced by |
|---|---|---|---|---|
| Aug 29, 2026, 1:45 AM | full_replace | success | 175 | codenow-nycmesh-container-oci.jfrog.io/codenow/citytap-pull:0.1.73 |