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Community Water System · PWS MO6030662

Big Country Acres Subdivision

Foristell, Missouri 63348-0000 - drinking water served from groundwater sources to 90 people, tracked in EPA SDWIS and UCMR5.

90
People served
55
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 55 drinking-water violations at Big Country Acres Subdivision, 20% of them health-based - below the Missouri per-system average.

55
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
90
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Big Country Acres Subdivision

Big Country Acres Subdivision is a private-owned community water system that delivers drinking water to 90 residents in Foristell, Missouri (St. Charles County) through 29 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 55 total violations for this system , of which 11 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 41 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 39 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 Missouri, EPA tracks 2,823 public water systems serving 5,855,885 people, with 201,695 cumulative violations and 54,821 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 71.4 violations. Statewide, 162 of 230 UCMR5-tested systems have reported PFAS detections (70.4%).

Big Country Acres Subdivision's 55 violations sit below the Missouri 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
90
Total Violations
55
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
29
County
St. Charles
School/Daycare
No
MCL Violations
11
Monitoring Violations
41
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 39 2010
Coliform (TCR) MCL 11 2015
Consumer Confidence Rule Other 1 2022
Nitrate-Nitrite MR 1 1998
Groundwater Rule Other 1 2025
Gross Alpha, Excl. Radon and U MR 1 1994
Public Notice Other 1 2007

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 Big Country Acres Subdivision.

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 MO6030662 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Missouri Drinking Water Authority

Missouri DNR, Public Drinking Water Branch is the primacy agency that licenses and inspects Big Country Acres Subdivision under EPA-delegated authority.

Open MO regulator portal

Source: Missouri DNR, Public Drinking Water Branch

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 Groundwater Rule Other 1 SDWIS / MO6030662 / 0700
2022 Consumer Confidence Rule Other 1 SDWIS / MO6030662 / 7000
2015 Coliform (TCR) MCL 11 SDWIS / MO6030662 / 3100
2010 Coliform (TCR) MR 39 SDWIS / MO6030662 / 3100
2007 Public Notice Other 1 SDWIS / MO6030662 / 7500
1998 Nitrate-Nitrite MR 1 SDWIS / MO6030662 / 1038
1994 Gross Alpha, Excl. Radon and U MR 1 SDWIS / MO6030662 / 4000

How Big Country Acres Subdivision Compares

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

Metric Big Country Acres Subdivision Missouri avg Federal benchmark
Total violations 55 71.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 11 19.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 70.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 90 2,074 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,823 regulated public water systems in Missouri.

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 Big Country Acres Subdivision water safe to drink? ▼
Big Country Acres Subdivision (PWS ID: MO6030662) has 55 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 90 people using Groundwater sources.
How many people does Big Country Acres Subdivision serve? ▼
Big Country Acres Subdivision serves 90 people in Foristell, Missouri. It is a Private-owned system using Groundwater water sources with 29 service connections.
What type of violations does Big Country Acres Subdivision have? ▼
Big Country Acres Subdivision has 55 total violations: 11 health-based violations (MCL exceedances or treatment failures), 41 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Big Country Acres Subdivision water? ▼
No PFAS testing data is available for Big Country Acres Subdivision under the EPA's UCMR5 monitoring program.
What water source does Big Country Acres Subdivision use? ▼
Big Country Acres Subdivision 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.