PlainWater
Counties → Kansas

Shawnee County, Kansas

Water Systems
9
Population Served
154,507
Total Violations
551
324 health-based
PFAS Detected
4
of 4 tested

Violation Analysis

100.0%
Systems with Violations
61.2
Avg Violations per System
58.8%
Health-Based Violations

Water Source Types

SW
7 systems (78%)
GW
2 systems (22%)

PFAS Contamination

4
Systems Tested
4
PFAS Detected
100.0%
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

Shawnee Kansas water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (9)

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
Topeka, City Of 125,963 14 Detected
Shawnee Co RWD 4C 12,000 2 Detected
Shawnee Co RWD 8 6,073 45 Detected
Shawnee Co RWD 1C 4,160 58 Clean
Shawnee Co RWD 3C 2,675 148 -
Silver Lake, City Of 1,337 22 -
Rossville, City Of 1,099 21 -
Shawnee Co RWD 2C 700 114 -
Metro Topeka Airport Authority 500 127 -

Other Counties in Kansas

Johnson County
9 systems · 668,443 served · 321 violations
Sedgwick County
29 systems · 498,426 served · 1,514 violations
Wyandotte County
2 systems · 160,765 served · 103 violations
Douglas County
14 systems · 155,316 served · 244 violations
Leavenworth County
16 systems · 82,837 served · 1,071 violations
Riley County
13 systems · 62,651 served · 542 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Shawnee County? ▼
Shawnee County has 551 total drinking water violations across 9 water systems, of which 324 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Shawnee County systems? ▼
Water systems in Shawnee County serve approximately 154,507 people through 9 public water systems.
Has PFAS been detected in Shawnee County water? ▼
Of 4 water systems tested for PFAS in Shawnee County, 4 had PFAS detected (100.0% detection rate).
What types of water sources supply Shawnee County? ▼
Water systems in Shawnee County use SW (7 systems), GW (2 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. 58.8% of Shawnee 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.