B74/100
TOWN OF SUNNYVALE — Water Quality Report 2026
Serving 8,839 people · Texas
Water Source
Purchased Surface Water
County
—
System ID
TX0570059
Violations
23
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
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: December 30, 2021 – February 3, 2022Rule: Ground Water RuleEnforcement: 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 TOWN OF SUNNYVALE
Is TOWN OF SUNNYVALE water safe to drink?
TOWN OF SUNNYVALE water receives a grade of B (74/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has TOWN OF SUNNYVALE detected?
31 contaminants were tested in TOWN OF SUNNYVALE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does TOWN OF SUNNYVALE have any EPA violations?
Yes, TOWN OF SUNNYVALE has 23 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, Other.
How many people does TOWN OF SUNNYVALE serve?
TOWN OF SUNNYVALE serves approximately 8,839 people, Texas.
What type of water does TOWN OF SUNNYVALE provide?
TOWN OF SUNNYVALE 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 TX0570059.
How does TOWN OF SUNNYVALE compare to other utilities in Texas?
TOWN OF SUNNYVALE 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.