C46/100
Boulder City Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 16,300 residents · Nevada
What's In Boulder City's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2003.
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
Water Utility Details
KATHERINE LANDING DWTP
Population Served
1,300
Water Source
Surface Water
System ID
AZ0408701
BOULDER CITY
Population Served
15,000
Water Source
Purchased Surface Water
System ID
NV0000011
Frequently Asked Questions About Boulder City Water
Is Boulder City tap water safe to drink?
Boulder City, Nevada tap water receives a grade of C (46/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 625 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Boulder City's water?
Of the 69 contaminants tested in Boulder City's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Boulder City have any water quality violations?
Yes, Boulder City has 625 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, MCL. 30 of these are health-based violations, which are the most serious category.
Do I need a water filter in Boulder City?
Boulder City water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Boulder City's tap water come from?
Boulder City's drinking water is sourced from surface water and supplied by KATHERINE LANDING DWTP and 1 other water system(s). The system serves approximately 16,300 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Boulder City's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Boulder City's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Boulder City's water compare to other cities in Nevada?
Boulder City's water quality score of 46/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Nevada state page to see how all cities in the state compare.
What should I do if I'm concerned about Boulder City's water quality?
If you have concerns about Boulder City's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (KATHERINE LANDING DWTP) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.