D32/100
CITY OF HILLSBORO — Water Quality Report 2026
Serving 8,867 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX1090001
Violations
21
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.004 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – April 19, 2023Enforcement: Resolving — corrective action underway
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 CITY OF HILLSBORO
Is CITY OF HILLSBORO water safe to drink?
CITY OF HILLSBORO water receives a grade of D (32/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 21 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF HILLSBORO detected?
54 contaminants were tested in CITY OF HILLSBORO's water. Notable contaminants include PFOA, Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does CITY OF HILLSBORO have any EPA violations?
Yes, CITY OF HILLSBORO has 21 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, Other, MCL. 9 are health-based violations.
How many people does CITY OF HILLSBORO serve?
CITY OF HILLSBORO serves approximately 8,867 people, Texas.
What type of water does CITY OF HILLSBORO provide?
CITY OF HILLSBORO 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 TX1090001.
How does CITY OF HILLSBORO compare to other utilities in Texas?
CITY OF HILLSBORO scores 32/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Texas state page for a full comparison of water systems.