diff --git a/README.md b/README.md
index 60737b3..6d3b616 100644
--- a/README.md
+++ b/README.md
@@ -563,13 +563,13 @@ For information on contributing to this project, please see the [contributing gu
 |                                          [IPInfoDB](https://ipinfodb.com/api)                                          | Free Geolocation tools and APIs for country, region, city and time zone lookup by IP address        | `apiKey` |  Yes  | Unknown |
 |                                            [ipstack](https://ipstack.com/)                                             | Locate and identify website visitors by IP address                                                  | `apiKey` |  Yes  | Unknown |
 |                                      [ipgeolocation](https://ipgeolocation.com/)                                       | Find geolocation of any IP address with IP Geolocation API                                          | `apiKey` |  Yes  |   Yes   |
+|                                             [IsItWater](https://IsItWater.com/)                                             | A free API to determine if a lat/lon is on water or land                                                          |    `rapidapi-key`    |  Yes  | Yes |
 |                            [Airtel IP](https://sys.airtel.lv/ip2country/1.1.1.1/?full=true)                            | IP Geolocation API. Collecting data from multiple sources                                           |    No    |  Yes  | Unknown |
 |                               [Kwelo Network](https://www.kwelo.com/network/ip-address)                                | Locate and get detailed information on IP address                                                   |    No    |  Yes  |   Yes   |
 |                                       [LocationIQ](https://locationiq.org/docs/)                                       | Provides forward/reverse geocoding and batch geocoding                                              | `apiKey` |  Yes  |   Yes   |
 |                                      [Mapbox](https://www.mapbox.com/developers/)                                      | Create/customize beautiful digital maps                                                             | `apiKey` |  Yes  | Unknown |
 |                                    [Mexico](https://github.com/IcaliaLabs/sepomex)                                     | Mexico RESTful zip codes API                                                                        |    No    |  Yes  | Unknown |
 |                                     [One Map, Singapore](https://docs.onemap.sg/)                                      | Singapore Land Authority REST API services for Singapore addresses                                  | `apiKey` |  Yes  | Unknown |
-|                                             [OnWater](https://onwater.io/)                                             | Determine if a lat/lon is on water or land                                                          |    No    |  Yes  | Unknown |
 |                                          [OpenCage](https://opencagedata.com)                                          | Forward and reverse geocoding using open data                                                       | `apiKey` |  Yes  |   Yes   |
 |                                [OpenStreetMap](http://wiki.openstreetmap.org/wiki/API)                                 | Navigation, geolocation and geographical data                                                       | `OAuth`  |  No   | Unknown |
 | [PostcodeData.nl](http://api.postcodedata.nl/v1/postcode/?postcode=1211EP&streetnumber=60&ref=domeinnaam.nl&type=json) | Provide geolocation data based on postcode for Dutch addresses                                      |    No    |  No   | Unknown |