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Community Water System · PWS KS2001501

Cassoday, City Of

Cassoday, Kansas 66842-0090 - drinking water served from surface water sources to 111 people, tracked in EPA SDWIS and UCMR5.

111
People served
132
EPA violations
44
Health-based
Untested
UCMR5 result

The verdict

EPA records 132 drinking-water violations at Cassoday, City Of, 33% of them health-based - above the Kansas per-system average.

132
Total EPA violations on record
33%
Health-based (MCL / treatment failure)
111
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cassoday, City Of

Cassoday, City Of is a local-owned community water system that delivers drinking water to 111 residents in Cassoday, Kansas (Butler County) through 149 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 132 total violations for this system , of which 44 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 52 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 28 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Kansas, EPA tracks 957 public water systems serving 2,894,673 people, with 84,344 cumulative violations and 33,424 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 88.1 violations. Statewide, 89 of 103 UCMR5-tested systems have reported PFAS detections (86.4%).

Cassoday, City Of's 132 violations sit above the Kansas average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
111
Total Violations
132
Health-Based Violations
44
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
149
County
Butler
School/Daycare
No
MCL Violations
44
Monitoring Violations
52
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 28 2007
Total Haloacetic Acids (HAA5) MCL 16 2020
TTHM MCL 16 2020
Coliform (TCR) MCL 12 2002
Public Notice Other 7 2020
TTHM MR 6 2019
Lead and Copper Rule MR 6 2021
Total Haloacetic Acids (HAA5) MR 6 2019
Revised Total Coliform Rule MON 4 2018
Consumer Confidence Rule Other 2 2007
Revised Total Coliform Rule RPT 2 2025
Chlorine MR 2 2025

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Cassoday, City Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID KS2001501 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Kansas Drinking Water Authority

Kansas's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find KS regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Revised Total Coliform Rule RPT 2 SDWIS / KS2001501 / 8000
2025 Chlorine MR 2 SDWIS / KS2001501 / 0999
2021 Lead and Copper Rule MR 6 SDWIS / KS2001501 / 5000
2020 Total Haloacetic Acids (HAA5) MCL 16 SDWIS / KS2001501 / 2456
2020 TTHM MCL 16 SDWIS / KS2001501 / 2950
2020 Public Notice Other 7 SDWIS / KS2001501 / 7500
2019 TTHM MR 6 SDWIS / KS2001501 / 2950
2019 Total Haloacetic Acids (HAA5) MR 6 SDWIS / KS2001501 / 2456
2018 Revised Total Coliform Rule MON 4 SDWIS / KS2001501 / 8000
2007 Coliform (TCR) MR 28 SDWIS / KS2001501 / 3100
2007 Consumer Confidence Rule Other 2 SDWIS / KS2001501 / 7000
2002 Coliform (TCR) MCL 12 SDWIS / KS2001501 / 3100

How Cassoday, City Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Cassoday, City Of Kansas avg Federal benchmark
Total violations 132 88.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 44 34.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 86.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 111 3,025 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 957 regulated public water systems in Kansas.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Cassoday, City Of water safe to drink? ▼
Cassoday, City Of (PWS ID: KS2001501) has 132 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 111 people using Surface Water sources.
How many people does Cassoday, City Of serve? ▼
Cassoday, City Of serves 111 people in Cassoday, Kansas. It is a Local-owned system using Surface Water water sources with 149 service connections.
What type of violations does Cassoday, City Of have? ▼
Cassoday, City Of has 132 total violations: 44 health-based violations (MCL exceedances or treatment failures), 52 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cassoday, City Of water? ▼
No PFAS testing data is available for Cassoday, City Of under the EPA's UCMR5 monitoring program.
What water source does Cassoday, City Of use? ▼
Cassoday, City Of uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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 system's figures are rendered directly from 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.