PlainWater
Counties → Oklahoma

Sequoyah County, Oklahoma

Water Systems
15
Population Served
40,394
Total Violations
1,738
682 health-based
PFAS Detected
0
of 2 tested

Violation Analysis

100.0%
Systems with Violations
115.9
Avg Violations per System
39.2%
Health-Based Violations

Water Source Types

SW
15 systems (100%)

PFAS Contamination

2
Systems Tested
0
PFAS Detected
0.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Sequoyah Oklahoma water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (15)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Sequoyah Co. RWD #8 13,460 199 Clean
Sallisaw 8,510 60 Clean
Muldrow PWA 3,104 170 -
Sequoyah Co. RWD #7 2,948 61 -
Roland 2,842 237 -
Sequoyah Co. RWD #4 1,750 54 -
Gore PWA 1,688 142 -
Vian 1,445 39 -
East Central Oklahoma Water Authority 1,200 299 -
Sequoyah Co. RWD #5 1,075 92 -
Sequoyah Co. RWD #3 1,040 47 -
Gans Utility Authority 600 160 -
Sequoyah Co. RWD #5 250 86 -
Lee Creek RWD 250 22 -
Fin and Feather Resort 232 70 -

Other Counties in Oklahoma

Oklahoma County
121 systems · 889,384 served · 20,669 violations
Tulsa County
15 systems · 666,353 served · 1,073 violations
Cleveland County
73 systems · 216,341 served · 8,560 violations
Comanche County
25 systems · 137,288 served · 5,160 violations
Payne County
22 systems · 87,559 served · 2,865 violations
Rogers County
15 systems · 75,204 served · 2,062 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Sequoyah County? ▼
Sequoyah County has 1,738 total drinking water violations across 15 water systems, of which 682 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Sequoyah County systems? ▼
Water systems in Sequoyah County serve approximately 40,394 people through 15 public water systems.
Has PFAS been detected in Sequoyah County water? ▼
Of 2 water systems tested for PFAS in Sequoyah County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Sequoyah County? ▼
Water systems in Sequoyah County use SW (15 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 39.2% of Sequoyah County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.