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Community Water System · PWS IL0110100

Buda

Peru, Illinois 61354 - drinking water served from groundwater sources to 482 people, tracked in EPA SDWIS and UCMR5.

482
People served
348
EPA violations
274
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 348 drinking-water violations at Buda, 79% of them health-based - above the Illinois per-system average.

348
Total EPA violations on record
79%
Health-based (MCL / treatment failure)
482
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Buda

Buda is a local-owned community water system that delivers drinking water to 482 residents in Peru, Illinois (Bureau County) through 232 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 348 total violations for this system , of which 274 (79%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 49 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 Combined Radium (-226 and -228), recorded in 219 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Buda's 348 violations sit above the Illinois 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
482
Total Violations
348
Health-Based Violations
274
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
232
County
Bureau
School/Daycare
No
MCL Violations
273
Monitoring Violations
49
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 219 2017
Gross Alpha, Excl. Radon and U MCL 52 2014
Combined Radium (-226 and -228) MR 9 2022
Coliform (TCR) MR 5 1992
Antimony, Total MR 4 2020
Cadmium MR 4 2020
Beryllium, Total MR 4 2020
Nickel MR 4 2020
Selenium MR 4 2020
Mercury MR 4 2020
Thallium, Total MR 4 2020
Barium MR 4 2020
Public Notice Other 3 2017
Combined Uranium MR 2 2017
Consumer Confidence Rule Other 2 2019
LEAD AND COPPER RULE REVISIONS RPT 2 2025
Coliform (TCR) MCL 2 1992
Gross Alpha, Excl. Radon and U MR 1 1977
Lead and Copper Rule TT 1 1994

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 8/14/2023 <6.00 ppt 6.00 ppt Not Detected
PFHxA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFUnA 8/14/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 8/14/2023 <7.00 ppt 7.00 ppt Not Detected
PFTA 8/14/2023 <8.00 ppt 8.00 ppt Not Detected
PFHpS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/14/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
PFEESA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/14/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/14/2023 <2.00 ppt 2.00 ppt Not Detected
4:2 FTS 8/14/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 8/14/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 2/27/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 2/27/2023 <6.00 ppt 6.00 ppt Not Detected
PFBS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFOA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFTA 2/27/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 2/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxA 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 2/27/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 2/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 2/27/2023 <4.00 ppt 4.00 ppt Not Detected

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 Buda.

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 IL0110100 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA, Bureau of Water is the primacy agency that licenses and inspects Buda under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA, Bureau of Water

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 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / IL0110100 / 5200
2022 Combined Radium (-226 and -228) MR 9 SDWIS / IL0110100 / 4010
2020 Antimony, Total MR 4 SDWIS / IL0110100 / 1074
2020 Cadmium MR 4 SDWIS / IL0110100 / 1015
2020 Beryllium, Total MR 4 SDWIS / IL0110100 / 1075
2020 Nickel MR 4 SDWIS / IL0110100 / 1036
2020 Selenium MR 4 SDWIS / IL0110100 / 1045
2020 Mercury MR 4 SDWIS / IL0110100 / 1035
2020 Thallium, Total MR 4 SDWIS / IL0110100 / 1085
2020 Barium MR 4 SDWIS / IL0110100 / 1010
2019 Consumer Confidence Rule Other 2 SDWIS / IL0110100 / 7000
2017 Combined Radium (-226 and -228) MCL 219 SDWIS / IL0110100 / 4010
2017 Public Notice Other 3 SDWIS / IL0110100 / 7500
2017 Combined Uranium MR 2 SDWIS / IL0110100 / 4006
2014 Gross Alpha, Excl. Radon and U MCL 52 SDWIS / IL0110100 / 4000

How Buda Compares

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

Metric Buda Illinois avg Federal benchmark
Total violations 348 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 274 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 482 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

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 Buda water safe to drink? ▼
Buda (PWS ID: IL0110100) has 348 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 482 people using Groundwater sources.
How many people does Buda serve? ▼
Buda serves 482 people in Peru, Illinois. It is a Local-owned system using Groundwater water sources with 232 service connections.
What type of violations does Buda have? ▼
Buda has 348 total violations: 274 health-based violations (MCL exceedances or treatment failures), 49 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Buda water? ▼
No. Buda was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Buda use? ▼
Buda 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.