B74/100
HARRIS COUNTY WCID 109 — Water Quality Report 2026
Serving 10,134 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX1010359
Violations
20
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 670.00 µg/L | — | Above Goal |
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 2021.
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 HARRIS COUNTY WCID 109
Is HARRIS COUNTY WCID 109 water safe to drink?
HARRIS COUNTY WCID 109 water receives a grade of B (74/100), which is considered good. Out of 46 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HARRIS COUNTY WCID 109 detected?
46 contaminants were tested in HARRIS COUNTY WCID 109's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does HARRIS COUNTY WCID 109 have any EPA violations?
Yes, HARRIS COUNTY WCID 109 has 20 EPA violation(s) on record, with the most recent in 2021. Violation types include MR.
How many people does HARRIS COUNTY WCID 109 serve?
HARRIS COUNTY WCID 109 serves approximately 10,134 people, Texas.
What type of water does HARRIS COUNTY WCID 109 provide?
HARRIS COUNTY WCID 109 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 TX1010359.
How does HARRIS COUNTY WCID 109 compare to other utilities in Texas?
HARRIS COUNTY WCID 109 scores 74/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Texas state page for a full comparison of water systems.