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Community Water System · PWS KS2001505

Butler Co RWD 2

El Dorado, Kansas 67042 - drinking water served from surface water sources to 1,534 people, tracked in EPA SDWIS and UCMR5.

1,534
People served
143
EPA violations
29
Health-based
Untested
UCMR5 result

The verdict

EPA records 143 drinking-water violations at Butler Co RWD 2, 20% of them health-based - above the Kansas per-system average.

143
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
1,534
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Butler Co RWD 2

Butler Co RWD 2 is a local-owned community water system that delivers drinking water to 1,534 residents in El Dorado, Kansas (Butler County) through 480 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 143 total violations for this system , of which 29 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 85 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 Lead and Copper Rule, recorded in 34 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%).

Butler Co RWD 2's 143 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
1,534
Total Violations
143
Health-Based Violations
29
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
480
County
Butler
School/Daycare
No
MCL Violations
29
Monitoring Violations
85
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 34 2021
Total Haloacetic Acids (HAA5) MCL 24 2021
Coliform (TCR) MR 14 2012
Revised Total Coliform Rule MON 13 2025
Total Haloacetic Acids (HAA5) MR 12 2022
Consumer Confidence Rule Other 8 2015
Public Notice Other 7 2021
TTHM MR 6 2022
Coliform (TCR) MCL 5 2014
Chlorine MR 5 2025
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 1 2010

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 Butler Co RWD 2.

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 KS2001505 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 MON 13 SDWIS / KS2001505 / 8000
2025 Chlorine MR 5 SDWIS / KS2001505 / 0999
2022 Total Haloacetic Acids (HAA5) MR 12 SDWIS / KS2001505 / 2456
2022 TTHM MR 6 SDWIS / KS2001505 / 2950
2021 Lead and Copper Rule MR 34 SDWIS / KS2001505 / 5000
2021 Total Haloacetic Acids (HAA5) MCL 24 SDWIS / KS2001505 / 2456
2021 Public Notice Other 7 SDWIS / KS2001505 / 7500
2015 Consumer Confidence Rule Other 8 SDWIS / KS2001505 / 7000
2014 Coliform (TCR) MCL 5 SDWIS / KS2001505 / 3100
2012 Coliform (TCR) MR 14 SDWIS / KS2001505 / 3100
2010 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 1 SDWIS / KS2001505 / 0600

How Butler Co RWD 2 Compares

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

Metric Butler Co RWD 2 Kansas avg Federal benchmark
Total violations 143 88.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 29 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 1,534 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 Butler Co RWD 2 water safe to drink? ▼
Butler Co RWD 2 (PWS ID: KS2001505) has 143 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,534 people using Surface Water sources.
How many people does Butler Co RWD 2 serve? ▼
Butler Co RWD 2 serves 1,534 people in El Dorado, Kansas. It is a Local-owned system using Surface Water water sources with 480 service connections.
What type of violations does Butler Co RWD 2 have? ▼
Butler Co RWD 2 has 143 total violations: 29 health-based violations (MCL exceedances or treatment failures), 85 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Butler Co RWD 2 water? ▼
No PFAS testing data is available for Butler Co RWD 2 under the EPA's UCMR5 monitoring program.
What water source does Butler Co RWD 2 use? ▼
Butler Co RWD 2 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.