A93/100
BILLINGS CITY OF — Water Quality Report 2026
Serving 114,000 people · Montana
Water Source
Surface Water
County
—
System ID
MT0000153
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1998.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About BILLINGS CITY OF
Is BILLINGS CITY OF water safe to drink?
BILLINGS CITY OF water receives a grade of A (93/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has BILLINGS CITY OF detected?
76 contaminants were tested in BILLINGS CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does BILLINGS CITY OF have any EPA violations?
Yes, BILLINGS CITY OF has 4 EPA violation(s) on record, with the most recent in 1998. Violation types include MR.
How many people does BILLINGS CITY OF serve?
BILLINGS CITY OF serves approximately 114,000 people, Montana. The system provides water to 1 community: Billings.
What type of water does BILLINGS CITY OF provide?
BILLINGS CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is MT0000153.
How does BILLINGS CITY OF compare to other utilities in Montana?
BILLINGS CITY OF scores 93/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Montana state page for a full comparison of water systems.