Based on EPA UCMR5 monitoring data, EPA SDWIS federal violations records, and EWG Tap Water Database published findings.
EPA and EWG records place this utility in a low-contamination category. Source water from protected high-elevation or low-industrial watersheds tends to require less chemical treatment, which also reduces disinfection byproduct formation. HAVEN recommends confirming with your utility's annual Consumer Confidence Report.
Water source: Surface water (Yellowstone River)
Water utility: City of Billings Water
Not detected in available EPA monitoring data. This is a positive indicator, though PFAS testing coverage is not universal.
The EPA's new maximum contaminant level (MCL) for PFAS is 4 ppt, effective 2026. PFAS compounds have been linked to cancer, thyroid disease, immune disruption, and developmental issues at chronic exposure levels per peer-reviewed research.
The following contaminants have been detected or are associated with elevated risk in this water system, per available EPA and EWG published data:
These detections are drawn from EPA SDWIS federal violations database and EWG Tap Water Database records. EWG health guidelines are stricter than EPA legal limits and reflect long-term exposure risk.
No health-based EPA violations recorded in the past 5 years at this utility. Note: EPA violations reflect legal compliance thresholds, which are less protective than the EWG health guidelines used in HAVEN's scoring model.
A certified pitcher filter handles most concerns at this level. For PFAS specifically, upgrade to AquaTru Carafe ($149) or an APEC under-sink RO system ($250) for highest protection.
Water is one of six categories HAVEN scores. Take the free 3-minute quiz to get your complete Home Health Score — mold, air quality, EMF, household chemicals, and more.
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