C44/100
Hillsboro Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 10,867 residents · Texas
What's In Hillsboro's Tap Water?
54
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
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
Water Utility Details
CITY OF HILLSBORO
Population Served
8,867
Water Source
Purchased Surface Water
System ID
TX1090001
BRANDON-IRENE WSC
Population Served
2,000
Water Source
Purchased Surface Water
System ID
TX1090018
Frequently Asked Questions About Hillsboro Water
Is Hillsboro tap water safe to drink?
Hillsboro, Texas tap water receives a grade of C (44/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 42 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Hillsboro's water?
Of the 54 contaminants tested in Hillsboro's water supply, the most notable include PFOA, Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Hillsboro have any water quality violations?
Yes, Hillsboro has 42 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, RPT. 14 of these are health-based violations, which are the most serious category.
Do I need a water filter in Hillsboro?
Based on EPA data, using a water filter in Hillsboro is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Hillsboro's tap water come from?
Hillsboro's drinking water is sourced from purchased surface water and supplied by CITY OF HILLSBORO and 1 other water system(s). The system serves approximately 10,867 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Hillsboro'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. Hillsboro'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 Hillsboro's water compare to other cities in Texas?
Hillsboro's water quality score of 44/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Hillsboro's water quality?
If you have concerns about Hillsboro'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 (CITY OF HILLSBORO) 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.