B67/100
WINSTON-SALEM, CITY OF — Water Quality Report 2026
Serving 388,060 people · North Carolina
Water Source
Surface Water
County
—
System ID
NC0234010
Violations
33
Contaminant Test Results
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Missed required monitoring deadline
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2021 – July 31, 2021Rule: Surface Water Treatment RuleEnforcement: Formal — state order issued
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 WINSTON-SALEM, CITY OF
Is WINSTON-SALEM, CITY OF water safe to drink?
WINSTON-SALEM, CITY OF water receives a grade of B (67/100), which is considered good. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has WINSTON-SALEM, CITY OF detected?
76 contaminants were tested in WINSTON-SALEM, CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does WINSTON-SALEM, CITY OF have any EPA violations?
Yes, WINSTON-SALEM, CITY OF has 33 EPA violation(s) on record, with the most recent in 2021. Violation types include MR, Other.
How many people does WINSTON-SALEM, CITY OF serve?
WINSTON-SALEM, CITY OF serves approximately 388,060 people, North Carolina. The system provides water to 1 community: Clemmons.
What type of water does WINSTON-SALEM, CITY OF provide?
WINSTON-SALEM, CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is NC0234010.
How does WINSTON-SALEM, CITY OF compare to other utilities in North Carolina?
WINSTON-SALEM, CITY OF scores 67/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our North Carolina state page for a full comparison of water systems.