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Community Water System · PWS IA3907092

Bayard Water Supply

Adair, Iowa 50002 - drinking water served from groundwater sources to 405 people, tracked in EPA SDWIS and UCMR5.

405
People served
114
EPA violations
60
Health-based
Untested
UCMR5 result

The verdict

EPA records 114 drinking-water violations at Bayard Water Supply, 53% of them health-based - above the Iowa per-system average.

114
Total EPA violations on record
53%
Health-based (MCL / treatment failure)
405
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bayard Water Supply

Bayard Water Supply is a local-owned community water system that delivers drinking water to 405 residents in Adair, Iowa (Guthrie County) through 205 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 114 total violations for this system , of which 60 (53%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 38 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Combined Radium (-226 and -228), recorded in 60 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Iowa, EPA tracks 1,795 public water systems serving 3,114,444 people, with 138,271 cumulative violations and 27,946 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 77 violations. Statewide, 127 of 152 UCMR5-tested systems have reported PFAS detections (83.6%).

Bayard Water Supply's 114 violations sit above the Iowa 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
405
Total Violations
114
Health-Based Violations
60
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
205
County
Guthrie
School/Daycare
No
MCL Violations
60
Monitoring Violations
38
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 60 2009
Combined Radium (-226 and -228) MR 9 1990
Gross Alpha, Excl. Radon and U MR 8 1990
Revised Total Coliform Rule MON 8 2020
Total Haloacetic Acids (HAA5) MR 5 2005
Nitrite MR 4 2022
Nitrate MR 4 2002
Consumer Confidence Rule Other 1 2024

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 Bayard Water Supply.

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 IA3907092 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Iowa Drinking Water Authority

Iowa'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 IA 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
2024 Consumer Confidence Rule Other 1 SDWIS / IA3907092 / 7000
2022 Nitrite MR 4 SDWIS / IA3907092 / 1041
2020 Revised Total Coliform Rule MON 8 SDWIS / IA3907092 / 8000
2009 Combined Radium (-226 and -228) MCL 60 SDWIS / IA3907092 / 4010
2005 Total Haloacetic Acids (HAA5) MR 5 SDWIS / IA3907092 / 2456
2002 Nitrate MR 4 SDWIS / IA3907092 / 1040
1990 Combined Radium (-226 and -228) MR 9 SDWIS / IA3907092 / 4010
1990 Gross Alpha, Excl. Radon and U MR 8 SDWIS / IA3907092 / 4000

How Bayard Water Supply Compares

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

Metric Bayard Water Supply Iowa avg Federal benchmark
Total violations 114 77 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 60 15.6 Indicates a contaminant exceeded a federal MCL
PFAS detection None 83.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 405 1,735 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,795 regulated public water systems in Iowa.

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 Bayard Water Supply water safe to drink? ▼
Bayard Water Supply (PWS ID: IA3907092) has 114 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 405 people using Groundwater sources.
How many people does Bayard Water Supply serve? ▼
Bayard Water Supply serves 405 people in Adair, Iowa. It is a Local-owned system using Groundwater water sources with 205 service connections.
What type of violations does Bayard Water Supply have? ▼
Bayard Water Supply has 114 total violations: 60 health-based violations (MCL exceedances or treatment failures), 38 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bayard Water Supply water? ▼
No PFAS testing data is available for Bayard Water Supply under the EPA's UCMR5 monitoring program.
What water source does Bayard Water Supply use? ▼
Bayard Water Supply uses Groundwater 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.