A100/100
HARRIS COUNTY WCID 91 — Water Quality Report 2026
Serving 3,000 people · Texas
Water Source
Groundwater
County
—
System ID
TX1010063
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 91
Is HARRIS COUNTY WCID 91 water safe to drink?
HARRIS COUNTY WCID 91 water receives a grade of A (100/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has HARRIS COUNTY WCID 91 detected?
1 contaminants were tested in HARRIS COUNTY WCID 91's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does HARRIS COUNTY WCID 91 have any EPA violations?
No, HARRIS COUNTY WCID 91 has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does HARRIS COUNTY WCID 91 serve?
HARRIS COUNTY WCID 91 serves approximately 3,000 people, Texas.
What type of water does HARRIS COUNTY WCID 91 provide?
HARRIS COUNTY WCID 91 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1010063.
How does HARRIS COUNTY WCID 91 compare to other utilities in Texas?
HARRIS COUNTY WCID 91 scores 100/100 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.