ZipCheckup - U.S. Water Quality API
Free API for U.S. drinking water quality — EPA violations, lead/copper levels, radon zones, Home Safety Scores for 6,300+ ZIP codes https://api.zipcheckup.com/v1
ZipCheckup - U.S. Water Quality API endpoints
| Method | Endpoint | Description |
|---|---|---|
| ZIP | ||
| GET |
getZip /zip/{zip} |
Returns complete water quality data including violations, contaminant list, lead and copper levels, radon zone, flood risk, and the composite Home Safety Score. This is the… |
| GET |
getZipScore /zip/{zip}/score |
Lightweight endpoint returning only the Home Safety Score and letter grade for a given ZIP code. Ideal for widgets, badges, and bulk lookups where the full dataset is not needed. |
| State | ||
| GET |
getState /state/{state} |
Returns aggregate water quality statistics for a US state: average Home Safety Score, total ZIP count, population covered, violation totals, lead statistics, and the top 10 most… |
| Rankings | ||
| GET |
getRankings /rankings |
Returns a ranked list of ZIP codes ordered by Home Safety Score. Use `order=desc` (default) to get the highest-scoring (safest) ZIPs, or `order=asc` to get the lowest-scoring… |
| Contaminants | ||
| GET |
getContaminant /contaminant/{code} |
Returns detailed reference information about a specific water contaminant, including health effects, EPA maximum contaminant level (MCL), affected vulnerable groups, removal… |
ZipCheckup - U.S. Water Quality API pricing
| Plan | Price | Rate limit | Quotas |
|---|---|---|---|
| BASIC | Free | — |
|