---
title: "List and filter observations for a specific sampling point by its notation"
method: GET
path: "/sampling-point/{pointNotation}/observation"
tags: ["Observations"]
---

# List and filter observations for a specific sampling point by its notation

`GET /sampling-point/{pointNotation}/observation`

## Request

- Base URL: `https://environment.data.gov.uk/water-quality`
- URL: `https://environment.data.gov.uk/water-quality/sampling-point/{pointNotation}/observation`
- Auth: none declared
- TypeScript: <https://skmtc.dev/environment-agency/apis/water-quality-archive/docs/sampling-point/:pointNotation/observation/get.ts> (a function with typed inputs; its response is checked against the schema)

## Path parameters

- `pointNotation` string, required: Filter by sample point notation

## Query parameters

- `skip` integer
- `limit` integer
- `determinand` string, nullable
- `sampleMaterialType` string, nullable
- `sampleSamplingNotation` integer, nullable
- `samplingPurpose` string, nullable
- `date` string, date, nullable
- `dateFrom` string, date, nullable
- `dateTo` string, date, nullable
- `complianceOnly` boolean

## Headers

- `Accept-Crs` 'http://www.opengis.net/def/crs/EPSG/0/27700' | 'http://www.opengis.net/def/crs/EPSG/0/4326'
- `CSV-Header` 'present' | 'absent'
- `API-Version` string

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/environment-agency/apis/water-quality-archive.md) - [All operations](https://skmtc.dev/environment-agency/apis/water-quality-archive/llms.txt) - [OpenAPI document](https://skmtc.dev/environment-agency/apis/water-quality-archive/revisions/013f828198b2?raw)