Why provider matching matters
Water information can change by utility, public water system, service boundary, municipal utility district, apartment complex, wholesale supplier, or private well. A city profile is a useful starting point, but it should not make address-level claims unless the provider is confirmed.
What a provider ID is
A provider ID is a public water system identifier. MyWaterFacts stores provider IDs where available, but candidate IDs should be confirmed from official utility, state, or EPA sources before being shown as an address-specific result.
Confidence labels
| Label | Meaning |
|---|---|
| High | The city/ZIP strongly maps to a primary utility, with official report support. |
| Medium | The likely provider is known, but service boundaries or nearby systems create uncertainty. |
| Low | The city name alone is not enough; provider lookup or address matching is required. |
Launch limitations
The current MyWaterFacts lookup is a static MVP. A full version should use address-level provider matching, state public water system data, and utility service area boundaries.