New York City Department of Environmental Protection
Agency within New York City's government tasked with pollution control and water supply
The New York City Department of Environmental Protection (DEP) is the department of the government of New York City that manages the city's water supply and sewage treatment systems, and works to reduce air, noise, and hazardous materials pollution.
Under a $1.88 billion dollar budget, it provides more than 1.1 billion US gallons (4,200,000 m3) of water each day to more than 9 million residents (including 8 million in the City of New York) through a complex network of nineteen reservoirs, three controlled lakes and 6,000 miles (9,700 km) of water mains, tunnels and aqueducts. DEP is also responsible for managing the city's combined sewer system, which carries both storm water runoff and sanitary waste, and fourteen sewage treatment plants located throughout the city. DEP carries out federal Clean Water Act rules and regulations, handles hazardous materials emergencies and toxic site remediation, oversees asbestos monitoring and removal, enforces the city's air and noise codes, bills and collects on city water and sewer accounts, and manages citywide water conservation programs. Its regulations are compiled in title 15 of the New York City Rules.
Facilities
Drinking water
NYCDEP manages three upstate supply systems to provide the city's drinking water: the Croton system, the Catskill system, and the Delaware system. The overall distribution system has a storage capacity of 550 billion US gallons (2.1×109 m3) and provides over 1 billion US gallons (3,800,000 m3) per day of water to more than eight million city residents and another one million users in four upstate counties bordering on the water supply system. The distribution system is made up of an extensive grid of water mains stretching approximately 6,600 miles (10,600 km).
Wastewater treatment
The city's wastewater is collected through an extensive grid of sewer pipes of various sizes and stretching over 7,400 miles (11,900 km). The Bureau of Wastewater Treatment (BWT) operates 14 water pollution control plants treating an average of 1.3 billion US gallons (4,900,000 m3) of wastewater a day; 96 wastewater pump stations: 8 dewatering facilities; and 490 sewer regulators.
This brief starts where responsible research should: with the source description of “New York City Department of Environmental Protection” as agency within New York City's government tasked with pollution control and water supply. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as agency within New York City's government tasked with pollution control and water supply. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q7013162. VIAF identifies the subject as 131260278. None of the 2 selected statements returned an explicit reference.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “New York City Department of Environmental Protection”, its source revision and the description used here.
- Expand the search: follow New York City Department of Environmental Protection primary sources, New York City Department of Environmental Protection archive and York research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “New York City Department of Environmental Protection”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “New York City Department of Environmental Protection” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.