A94/100
SULPHUR — Water Quality Report 2026
Serving 4,929 people · Oklahoma
Water Source
Groundwater
County
—
System ID
OK2005001
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2009.
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 SULPHUR
Is SULPHUR water safe to drink?
SULPHUR water receives a grade of A (94/100), which is considered excellent. 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 SULPHUR detected?
31 contaminants were tested in SULPHUR's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SULPHUR have any EPA violations?
Yes, SULPHUR has 3 EPA violation(s) on record, with the most recent in 2009. Violation types include MR.
How many people does SULPHUR serve?
SULPHUR serves approximately 4,929 people, Oklahoma.
What type of water does SULPHUR provide?
SULPHUR sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OK2005001.
How does SULPHUR compare to other utilities in Oklahoma?
SULPHUR scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Oklahoma state page for a full comparison of water systems.