B66/100
SEQUOYAH CO. RWD #4 — Water Quality Report 2026
Serving 1,750 people · Oklahoma
Water Source
Purchased Surface Water
County
—
System ID
OK3006809
Violations
18
Contaminant Test Results
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – January 31, 2025Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – January 31, 2025Rule: Total Coliform 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 SEQUOYAH CO. RWD #4
Is SEQUOYAH CO. RWD #4 water safe to drink?
SEQUOYAH CO. RWD #4 water receives a grade of B (66/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SEQUOYAH CO. RWD #4 detected?
1 contaminants were tested in SEQUOYAH CO. RWD #4's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SEQUOYAH CO. RWD #4 have any EPA violations?
Yes, SEQUOYAH CO. RWD #4 has 18 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, MCL. 4 are health-based violations.
How many people does SEQUOYAH CO. RWD #4 serve?
SEQUOYAH CO. RWD #4 serves approximately 1,750 people, Oklahoma.
What type of water does SEQUOYAH CO. RWD #4 provide?
SEQUOYAH CO. RWD #4 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 OK3006809.
How does SEQUOYAH CO. RWD #4 compare to other utilities in Oklahoma?
SEQUOYAH CO. RWD #4 scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Oklahoma state page for a full comparison of water systems.