Bathing Water Quality: Every designated bathing water in England — beaches, lakes and river swimming sites — with its latest classification (excellent to poor), today's pollution-risk forecast and the date of the latest sample.
Every API here is available over the APIs.io API and to AI agents over MCP.
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.curl "https://apis.io/api/v1/apis/fourzerotwo-si:fourzerotwo-si-bathing-water-api"curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
openapi: 3.2.0
info:
title: Fourzerotwo Si Bathing Water API
version: 1.1.0
contact:
url: https://fourzerotwo.si
description: 'Operations tagged bathing-water across 2 of this provider''s published API definitions: openapi.json, fourzerotwo-si-openapi.json. Each path carries the servers of the definition it was published in.'
servers:
- url: https://fourzerotwo.si
tags:
- name: bathing-water
description: 'Bathing Water Quality: Every designated bathing water in England — beaches, lakes and river swimming sites — with its latest classification (excellent to poor), today''s pollution-risk forecast and the date of the latest sample.'
paths:
/v1/bathing-water/near:
get:
operationId: bathing_water__near
summary: 'Bathing Water Quality: Bathing waters near a point'
description: 'Designated bathing waters within a radius (default 25 km) of a UK postcode or point, nearest first, with classification and pollution risk. Price: $0.002 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- bathing-water
externalDocs:
url: https://fourzerotwo.si/apis/bathing-water/near
parameters:
- name: postcode
in: query
required: false
description: UK postcode (or give lat and lng)
schema:
type: string
maxLength: 8
example: BH2 5AA
- name: lat
in: query
required: false
description: Latitude
schema:
type: string
maxLength: 12
- name: lng
in: query
required: false
description: Longitude
schema:
type: string
maxLength: 12
- name: radius_km
in: query
required: false
description: Radius in km (default 25, max 100)
schema:
type: integer
example: 15
- name: limit
in: query
required: false
description: Max results (default 10)
schema:
type: integer
example: 5
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.002000'
x-free-tier: free
x-mcp-tool: bathing-water__near
servers:
- url: https://fourzerotwo.si
/v1/bathing-water/site:
get:
operationId: bathing_water__site
summary: 'Bathing Water Quality: Bathing water by id'
description: 'One bathing water: classification and year, pollution-risk forecast, latest sample date, water company and profile link. Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- bathing-water
externalDocs:
url: https://fourzerotwo.si/apis/bathing-water/site
parameters:
- name: id
in: query
required: true
description: Bathing water id
schema:
type: string
maxLength: 16
example: ukc2102-03600
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.001000'
x-free-tier: free
x-mcp-tool: bathing-water__site
servers:
- url: https://fourzerotwo.si
/v1/bathing-water/search:
get:
operationId: bathing_water__search
summary: 'Bathing Water Quality: Search bathing waters'
description: 'Find bathing waters by name or district, and/or by classification (e.g. every "poor" site). Price: $0.001 USDC per call via x402. Free within the daily allowance with a free key.'
tags:
- bathing-water
externalDocs:
url: https://fourzerotwo.si/apis/bathing-water/search
parameters:
- name: name
in: query
required: false
description: Site or district name
schema:
type: string
maxLength: 60
example: Cornwall
- name: classification
in: query
required: false
description: excellent | good | sufficient | poor | closed
schema:
type: string
maxLength: 12
responses:
'200':
description: The data (paid, or free tier).
content:
application/json: {}
'402':
$ref: '#/components/responses/PaymentRequired'
'400':
$ref: '#/components/responses/Error'
'404':
$ref: '#/components/responses/Error'
'502':
$ref: '#/components/responses/Error'
security:
- {}
- freeKey: []
x-price-usd: '0.001000'
x-free-tier: free
x-mcp-tool: bathing-water__search
servers:
- url: https://fourzerotwo.si
components:
responses:
PaymentRequired:
description: x402 payment required. The body (also base64 in the PAYMENT-REQUIRED header) lists accepted payments.
headers:
PAYMENT-REQUIRED:
schema:
type: string
description: Base64 JSON x402 v2 PaymentRequired
content:
application/json:
schema:
type: object
properties:
x402Version:
type: integer
error:
type: string
accepts:
type: array
items:
type: object
Error:
description: 400 = invalid input, 404 = not found at the source, 502 = the source failed. Never charged.
content:
application/json:
schema:
type: object
properties:
error:
type: string
charged:
type: boolean
securitySchemes:
freeKey:
type: apiKey
in: header
name: X-API-Key
description: Optional free key (fzt_…) for the free tier.
x-refined-from:
- openapi.json
- fourzerotwo-si-openapi.json