---
title: "Superfund Sites From Address"
method: GET
path: "/v2/property/block_superfund"
tags: ["Census Block Level"]
---

# Superfund Sites From Address

`GET /v2/property/block_superfund`

Identify nearby federally-designated toxic contamination cleanup sites, providing crucial information on potential environmental hazards in a block's vicinity. 

Source: ATSDR (CDC) 

Pricing Tier: Basic 

Updated: Decennially

## Request Query Params

<table><tr><th>Property</th><th>Type</th><th>Description</th><th>Example</th></tr>
<tr><td>slug</td><td>string</td><td>Unique readable string identifier for the property</td><td>123-Main-St-Apt-1B-San-Francisco-CA-94132</td>
        </tr>
<tr><td>address</td><td>string</td><td>Either a single URL-safe string ("slug") identifying the address, or just a building number, street name, and optionally unit number (if not a slug the payload must also include other identifiers)</td><td>123 Main St</td>
        </tr>
<tr><td>unit</td><td>string</td><td>Unit number for the property, if needed and not already specified in the address string</td><td>Apt 1B</td>
        </tr>
<tr><td>city</td><td>string</td><td>City in which the property is located</td><td>San Francisco</td>
        </tr>
<tr><td>state</td><td>string</td><td>2-letter acronym of the US state in which the property is located</td><td>CA</td>
        </tr>
<tr><td>zipcode</td><td>string</td><td>5-digit US zipcode in which the property is located</td><td>94105</td>
        </tr>
</table>

## Response

<table><tr><th>Field</th><th>Type</th><th>Description</th><th>Example</th></tr>
<tr><td>within_miles_0</td><td>object</td><td>Superfund sites that the property is located on (if any).</td><td></td>
        </tr>
<tr><td>within_miles_0.count</td><td>integer</td><td>Number of Superfund sites in the area.</td><td>4</td>
        </tr>
<tr><td>within_miles_0.detail</td><td>array</td><td>Specifics for each Superfund site in the area (if any).</td><td></td>
        </tr>
<tr><td>within_miles_0.detail[]</td><td>object</td><td></td><td></td>
        </tr>
<tr><td>within_miles_0.detail[].site_name</td><td>string</td><td>Official name of the Superfund site.</td><td>Hazardous Waste Disposal Site</td>
        </tr>
<tr><td>within_miles_0.detail[].epa_site_id</td><td>string</td><td>Official ID of the Superfund site.</td><td>EPA12345</td>
        </tr>
<tr><td>within_miles_0.detail[].link</td><td>string</td><td>URL for site details hosted by the EPA.</td><td>https://www.epa.gov/superfund/hazardous-waste-disposal-site</td>
        </tr>
<tr><td>within_miles_0.detail[].npl_status</td><td>string</td><td>Status of the site on the National Priorities List.</td><td>Proposed</td>
        </tr>
<tr><td>within_miles_0.detail[].updated_date</td><td>string</td><td>Date when the site entry was last modified.</td><td>2023-07-15</td>
        </tr>
<tr><td>within_miles_1</td><td>object</td><td>Superfund sites within 1 mile of the property (if any).</td><td></td>
        </tr>
<tr><td>within_miles_1.count</td><td>integer</td><td>Number of Superfund sites in the area.</td><td>4</td>
        </tr>
<tr><td>within_miles_1.detail</td><td>array</td><td>Specifics for each Superfund site in the area (if any).</td><td></td>
        </tr>
<tr><td>within_miles_1.detail[]</td><td>object</td><td></td><td></td>
        </tr>
<tr><td>within_miles_1.detail[].site_name</td><td>string</td><td>Official name of the Superfund site.</td><td>Hazardous Waste Disposal Site</td>
        </tr>
<tr><td>within_miles_1.detail[].epa_site_id</td><td>string</td><td>Official ID of the Superfund site.</td><td>EPA12345</td>
        </tr>
<tr><td>within_miles_1.detail[].link</td><td>string</td><td>URL for site details hosted by the EPA.</td><td>https://www.epa.gov/superfund/hazardous-waste-disposal-site</td>
        </tr>
<tr><td>within_miles_1.detail[].npl_status</td><td>string</td><td>Status of the site on the National Priorities List.</td><td>Proposed</td>
        </tr>
<tr><td>within_miles_1.detail[].updated_date</td><td>string</td><td>Date when the site entry was last modified.</td><td>2023-07-15</td>
        </tr>
<tr><td>within_miles_4</td><td>object</td><td>Superfund sites within 4 miles of the property (if any).</td><td></td>
        </tr>
<tr><td>within_miles_4.count</td><td>integer</td><td>Number of Superfund sites in the area.</td><td>4</td>
        </tr>
<tr><td>within_miles_4.detail</td><td>array</td><td>Specifics for each Superfund site in the area (if any).</td><td></td>
        </tr>
<tr><td>within_miles_4.detail[]</td><td>object</td><td></td><td></td>
        </tr>
<tr><td>within_miles_4.detail[].site_name</td><td>string</td><td>Official name of the Superfund site.</td><td>Hazardous Waste Disposal Site</td>
        </tr>
<tr><td>within_miles_4.detail[].epa_site_id</td><td>string</td><td>Official ID of the Superfund site.</td><td>EPA12345</td>
        </tr>
<tr><td>within_miles_4.detail[].link</td><td>string</td><td>URL for site details hosted by the EPA.</td><td>https://www.epa.gov/superfund/hazardous-waste-disposal-site</td>
        </tr>
<tr><td>within_miles_4.detail[].npl_status</td><td>string</td><td>Status of the site on the National Priorities List.</td><td>Proposed</td>
        </tr>
<tr><td>within_miles_4.detail[].updated_date</td><td>string</td><td>Date when the site entry was last modified.</td><td>2023-07-15</td>
        </tr>
</table>

## Query parameters

- `slug` string
- `address` string, required
- `unit` string
- `city` string
- `state` string
- `zipcode` string

## Response `200`

Success

- object[]
  - `property/block_superfund` object
    - `api_code_description` string
    - `api_code` unknown
    - `result` object, nullable
      - `within_miles_0` object — Superfund sites that the property is located on (if any).
        - `count` integer — Number of Superfund sites in the area.
        - `detail` object[] — Specifics for each Superfund site in the area (if any).
          - `site_name` string — Official name of the Superfund site.
          - `epa_site_id` string — Official ID of the Superfund site.
          - `link` string — URL for site details hosted by the EPA.
          - `npl_status` string — Status of the site on the National Priorities List.
          - `updated_date` string — Date when the site entry was last modified.
      - `within_miles_1` object — Superfund sites within 1 mile of the property (if any).
        - `count` integer — Number of Superfund sites in the area.
        - `detail` object[] — Specifics for each Superfund site in the area (if any).
          - `site_name` string — Official name of the Superfund site.
          - `epa_site_id` string — Official ID of the Superfund site.
          - `link` string — URL for site details hosted by the EPA.
          - `npl_status` string — Status of the site on the National Priorities List.
          - `updated_date` string — Date when the site entry was last modified.
      - `within_miles_4` object — Superfund sites within 4 miles of the property (if any).
        - `count` integer — Number of Superfund sites in the area.
        - `detail` object[] — Specifics for each Superfund site in the area (if any).
          - `site_name` string — Official name of the Superfund site.
          - `epa_site_id` string — Official ID of the Superfund site.
          - `link` string — URL for site details hosted by the EPA.
          - `npl_status` string — Status of the site on the National Priorities List.
          - `updated_date` string — Date when the site entry was last modified.
  - `address_info` AddressInfo
    - `address_full` string, nullable — Full address string
    - `slug` string, nullable — HouseCanary address slug
    - `address` string, nullable — Street address
    - `unit` string, nullable — Unit within the building, if any
    - `city` string, nullable — City where property is located
    - `state` string, nullable — 2-character state abbreviation
    - `zipcode` string, nullable — 5-character US zipcode
    - `zipcode_plus4` string, nullable — 4-character zipcode extension
    - `block_id` string, nullable — 15-digit US census block ID
    - `blockgroup_id` string, nullable — 12-digit census block group ID
    - `county_fips` string, nullable — 5-digit US census county ID
    - `metrodiv` string, nullable — 5-digit US census Metropolitan Division ID
    - `msa` string, nullable — 5-digit US census MSA ID
    - `geo_precision` 'rooftop' | 'parcel' | 'zip9' | 'zip5' | 'unknown', nullable — A string describing available geo precision
    - `lat` number, nullable — Latitude value, in degrees
    - `lng` number, nullable — Longitude value, in degrees
    - `status` object
      - `match` boolean — Whether the address was matched to a canonical address in HouseCanary's systems
      - `details` string[]
      - `requested_item` object — Exact address parameters provided in the original API request
      - `changes` string[]
      - `errors` string[]

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `429` — Rate limit exceeded

---

[API](https://skmtc.net/housecanary/apis/housecanary-analytics-and-portfolio-monitoring-apis.md) · [All operations](https://skmtc.net/housecanary/apis/housecanary-analytics-and-portfolio-monitoring-apis/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/housecanary/housecanary-analytics-and-portfolio-monitoring-apis/revisions/38afb6724de7/schema)