# NYC drinking water tank inspection

> Owners of NYC buildings that use tanks to store or pressurize drinking water must have them inspected at least once a year. The inspection and water quality sampling must happen between January 1 and December 31, and the certified water tank inspector must submit the report by January 15 of the next year.

Source page: https://coderalert0.github.io/nyc-dob-violations-site/drinking-water-tank-inspection.html
Checked against city sources on November 4, 2026. Independent app. Not affiliated with or endorsed by the NYC Department of Buildings or the City of New York.

## Tank deadlines at a glance

| Detail | Answer |
|---|---|
| Inspection and sampling | January 1 to December 31 |
| Report due | January 15 of the next year |
| Who submits it | Your certified water tank inspector |
| Keep results for | At least five years |

The inspection must cover both the tank and a bacteriological sample of the water.

## Frequently asked questions

### When is the NYC water tank report due?

By January 15 of the year after the inspection. A 2026 inspection is due by January 15, 2027.

### Who submits the report?

Your certified water tank inspector submits it to the Health Department.

### How long do I keep the results?

Building owners must keep inspection and water test results for at least five years.

## Sources

- [NYC Health: Drinking Water Tank Inspection Reporting](https://www.nyc.gov/site/doh/business/permits-and-licenses/drinking-water-tank-inspection-reporting.page)
- [NYC Health: Water Systems](https://www.nyc.gov/site/doh/business/permits-and-licenses/drinking-water.page)