/v1/supply-gpm
Water-supply demand from WSFU
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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.
It works. Grab an API key and use it in your project.
Get an API keyCode snippets
curl "https://api.oanor.com/plumbing-api/v1/supply-gpm" \ -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/plumbing-api/v1/supply-gpm", {
headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/plumbing-api/v1/supply-gpm");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
"https://api.oanor.com/plumbing-api/v1/supply-gpm",
headers={"x-oanor-key": "oanor_test_..."}
)
Example response
A real response from this endpoint, captured by the latest health check.
{
"data": {
"note": "Probable peak water demand from supply fixture units, read off the Hunter curve (flush-tank predominant) — diversity means 100 WSFU draws only ~54 GPM, not the sum of every fixture at once. Use the demand GPM with the available pressure to size the water-service and distribution piping.",
"inputs": {
"wsfu": 100
},
"demand_gpm": 54
},
"meta": {
"timestamp": "2026-06-06T15:30:43.595Z",
"request_id": "9f1c31b8-9fef-434e-bf7c-e794664d539f"
},
"status": "ok",
"message": "Supply GPM",
"success": true
}