A80/100
NORTH COLLIN SUD — Water Quality Report 2026
Serving 10,674 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX0430055
Violations
13
Contaminant Test Results
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
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: July 21, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Maximum contaminant level violation
When: May 24, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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 NORTH COLLIN SUD
Is NORTH COLLIN SUD water safe to drink?
NORTH COLLIN SUD water receives a grade of A (80/100), which is considered excellent. Out of 34 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has NORTH COLLIN SUD detected?
34 contaminants were tested in NORTH COLLIN SUD's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does NORTH COLLIN SUD have any EPA violations?
Yes, NORTH COLLIN SUD has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, TT, MR. 1 are health-based violations.
How many people does NORTH COLLIN SUD serve?
NORTH COLLIN SUD serves approximately 10,674 people, Texas.
What type of water does NORTH COLLIN SUD provide?
NORTH COLLIN SUD sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX0430055.
How does NORTH COLLIN SUD compare to other utilities in Texas?
NORTH COLLIN SUD scores 80/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Texas state page for a full comparison of water systems.