A99/100
NCTAMS EASTPAC — Water Quality Report 2026
Serving 6,470 people · Hawaii
Water Source
Groundwater
County
—
System ID
HI0000357
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2008.
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 NCTAMS EASTPAC
Is NCTAMS EASTPAC water safe to drink?
NCTAMS EASTPAC water receives a grade of A (99/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has NCTAMS EASTPAC detected?
31 contaminants were tested in NCTAMS EASTPAC's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does NCTAMS EASTPAC have any EPA violations?
Yes, NCTAMS EASTPAC has 1 EPA violation(s) on record, with the most recent in 2008. Violation types include MR.
How many people does NCTAMS EASTPAC serve?
NCTAMS EASTPAC serves approximately 6,470 people, Hawaii. The system provides water to 1 community: Wahiawa.
What type of water does NCTAMS EASTPAC provide?
NCTAMS EASTPAC sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is HI0000357.
How does NCTAMS EASTPAC compare to other utilities in Hawaii?
NCTAMS EASTPAC scores 99/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Hawaii state page for a full comparison of water systems.