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Community Water System · PWS MI0005395

Green Brook Estates

Fowlerville, Michigan 48836 - drinking water served from groundwater sources to 40 people, tracked in EPA SDWIS and UCMR5.

40
People served
768
EPA violations
131
Health-based
Untested
UCMR5 result

The verdict

EPA records 768 drinking-water violations at Green Brook Estates, 17% of them health-based - above the Michigan per-system average.

768
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
40
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Green Brook Estates

Green Brook Estates is a private-owned community water system that delivers drinking water to 40 residents in Fowlerville, Michigan (Livingston County) through 29 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 768 total violations for this system , of which 131 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 586 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 Arsenic, recorded in 101 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 Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%).

Green Brook Estates's 768 violations sit above the Michigan 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
40
Total Violations
768
Health-Based Violations
131
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
29
County
Livingston
School/Daycare
No
MCL Violations
117
Monitoring Violations
586
Treatment Tech Violations
14

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 101 2019
Coliform (TCR) MR 63 2014
Combined Radium (-226 and -228) MR 23 2013
Arsenic MR 22 2015
Consumer Confidence Rule Other 16 2025
Coliform (TCR) MCL 16 2004
Lead and Copper Rule MR 14 2021
Public Notice Other 12 2025
Endrin MR 10 2020
Methoxychlor MR 10 2020
Toxaphene MR 10 2020
OXAMYL MR 10 2020
Dinoseb MR 10 2020
Aldicarb sulfoxide MR 10 2020
Aldicarb sulfone MR 10 2020
Carbofuran MR 10 2020
Heptachlor MR 10 2020
Heptachlor epoxide MR 10 2020
2,4-D MR 10 2020
2,4,5-TP MR 10 2020
Total Polychlorinated Biphenyls (PCB) MR 10 2020
Chlordane MR 10 2020
BHC-GAMMA MR 10 2020
Picloram MR 10 2020
Aldicarb MR 10 2020
HEXACHLOROBENZENE MR 10 2020
LASSO MR 10 2020
Atrazine MR 10 2020
Revised Total Coliform Rule MON 10 2024
Hexachlorocyclopentadiene MR 10 2020

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 Green Brook Estates.

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 MI0005395 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Michigan Drinking Water Authority

Michigan EGLE, Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects Green Brook Estates under EPA-delegated authority.

Open MI regulator portal

Source: Michigan EGLE, Drinking Water and Environmental Health Division

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 Consumer Confidence Rule Other 16 SDWIS / MI0005395 / 7000
2025 Public Notice Other 12 SDWIS / MI0005395 / 7500
2024 Revised Total Coliform Rule MON 10 SDWIS / MI0005395 / 8000
2024 Revised Total Coliform Rule TT 5 SDWIS / MI0005395 / 8000
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / MI0005395 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 4 SDWIS / MI0005395 / 5200
2021 Lead and Copper Rule MR 14 SDWIS / MI0005395 / 5000
2020 Endrin MR 10 SDWIS / MI0005395 / 2005
2020 Methoxychlor MR 10 SDWIS / MI0005395 / 2015
2020 Toxaphene MR 10 SDWIS / MI0005395 / 2020
2020 OXAMYL MR 10 SDWIS / MI0005395 / 2036
2020 Dinoseb MR 10 SDWIS / MI0005395 / 2041
2020 Aldicarb sulfoxide MR 10 SDWIS / MI0005395 / 2043
2020 Aldicarb sulfone MR 10 SDWIS / MI0005395 / 2044
2020 Carbofuran MR 10 SDWIS / MI0005395 / 2046

How Green Brook Estates Compares

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

Metric Green Brook Estates Michigan avg Federal benchmark
Total violations 768 23.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 131 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 27.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 40 830 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.

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 Green Brook Estates water safe to drink? ▼
Green Brook Estates (PWS ID: MI0005395) has 768 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40 people using Groundwater sources.
How many people does Green Brook Estates serve? ▼
Green Brook Estates serves 40 people in Fowlerville, Michigan. It is a Private-owned system using Groundwater water sources with 29 service connections.
What type of violations does Green Brook Estates have? ▼
Green Brook Estates has 768 total violations: 131 health-based violations (MCL exceedances or treatment failures), 586 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Green Brook Estates water? ▼
No PFAS testing data is available for Green Brook Estates under the EPA's UCMR5 monitoring program.
What water source does Green Brook Estates use? ▼
Green Brook Estates 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.