# Intro call with Industrial Waterworks

> Let's discuss: Effluent data and limits Surcharge fees Existing treatment equipment Services offered by IWW Next steps

- Host: Industrial Waterworks
- Duration: 60 min
- Location: Cal Video
- Host time zone: America/New_York
- Confirmation: Bookings are confirmed instantly.
- Booking page: https://cal.com/waterworks/intro
- Event type id: 498532

## Check availability

```http
GET https://api.cal.com/v2/slots?eventTypeId=498532&start=YYYY-MM-DD&end=YYYY-MM-DD&timeZone=<IANA time zone>
cal-api-version: 2024-09-04
```

The response is `{"data":{"YYYY-MM-DD":[{"start":"<ISO 8601 with offset>"}]}}`; no API key is needed.

## Book

```http
POST https://api.cal.com/v2/bookings
cal-api-version: 2026-02-25
Content-Type: application/json

{
  "eventTypeId": 498532,
  "start": "<UTC ISO 8601 start from the slots response>",
  "attendee": {
    "name": "…",
    "email": "…",
    "timeZone": "<IANA time zone>"
  },
  "bookingFieldsResponses": {
    "title": "…",
    "Facility-Address": "…",
    "Yes-no": "…",
    "notes": "…"
  }
}
```

- Required fields: `name` (Your name), `email` (Email address), `title` (Company name & products made), `Facility-Address` (Facility Address), `Yes-no` (Does your facility have a wastewater treatment system?), `notes` (What would you like to discuss?)
- Optional fields: none
- `name` and `email` go in `attendee` and `guests` is a list of emails; every other field goes in `bookingFieldsResponses` under its name.