Public water system record
Green Brook Estates
Serves an area of Livingston County, MI · 40 people served
Federal records show 12 health-based violations and 38 monitoring/reporting issues for Green Brook Estates in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 12
- Resolved
- 8
- Unresolved
- 0
- Archived by EPA
- 4
- Any acute record
- No
- Monitoring issues, last 10 years
- 38
Key facts
- EPA lists 2 wells for Green Brook Estates, all for emergency, seasonal or other part-time use.
- Highest measured level in the last 10 years: Arsenic, 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit), 2019.
- Most recent formal enforcement: administrative penalty by Michigan, December 2025.
- Record on file since 1993, with 16 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 31 service lines.
Check whether Green Brook Estates serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Oct 27, 2024 | Resolved | No |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2019 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2018 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jan 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Oct 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Jul 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Arsenic
Contaminant limit exceeded
Measured 0.011 mg/L, federal limit 0.01 mg/L (1.1 times the limit)
|
330 | Apr 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 22, 2016 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 22, 2016 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 22, 2016 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Jun 13, 2014 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 |
Active
Enforcement action in place
|
|
Public Notice
OTHER
|
Jan 9, 2025 | Active |
|
Public Notice
OTHER
|
Jan 6, 2025 | Resolved |
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2024 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2024 | Active |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2021 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2021 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb sulfone
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Aldicarb sulfoxide
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 22, 2017 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2015 |
Active
Enforcement action in place
|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2014 |
Active
Enforcement action in place
|
Full record since 1993
EPA's records for Green Brook Estates go back to 1993. Before October 19, 2016 they list 16 health-based violations (9 resolved, 7 archived by EPA without a recorded fix) and 82 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 3 | 2 |
| 2010 to October 18, 2016 | 11 | 79 |
| October 19, 2016 to 2019 | 6 | 2 |
| 2020s | 2 | 34 |
Most recent health-based violation before October 19, 2016: Groundwater Rule, began August 2016, Resolved.
Show all 16 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Groundwater Rule
Treatment technique failure
|
Aug 22, 2016 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Aug 22, 2016 | Resolved |
|
Groundwater Rule
Treatment technique failure
|
Aug 22, 2016 | Resolved |
|
Arsenic
Contaminant limit exceeded
|
Oct 1, 2015 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Jul 1, 2015 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Apr 1, 2015 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Jan 1, 2015 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Oct 1, 2014 | Archived |
|
Arsenic
Contaminant limit exceeded
|
Jul 1, 2014 | Archived |
|
Groundwater Rule
Treatment technique failure
|
Jun 13, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.012 mg/L, federal limit 0.01 mg/L (1.2 times the limit)
|
Apr 1, 2014 | Archived |
|
Arsenic
Contaminant limit exceeded
Measured 0.013 mg/L, federal limit 0.01 mg/L (1.3 times the limit)
|
Jan 23, 2006 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2004 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 1996 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 1993 | Resolved |
Enforcement actions
Michigan regulators took 8 formal enforcement actions against Green Brook Estates and issued 4 boil water orders between 1993 and 2025. The most recent was an administrative penalty in December 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 17, 2025 | Michigan | Administrative penalty | 1 violation: Consumer Confidence Rule |
| Jun 30, 2025 | Michigan | Administrative penalty | 1 violation: Public Notice |
| Nov 20, 2018 | Michigan | Consent decree or court judgment | 15 violations (13 health-based): Arsenic, Consumer Confidence Rule |
| Aug 2, 2018 | Michigan | Civil case filed in court | 16 violations (13 health-based): Arsenic, Consumer Confidence Rule |
| Mar 10, 2016 | Michigan | Administrative penalty | 1 violation: Public Notice |
| Nov 24, 2015 | Michigan | Administrative penalty | 1 violation: Consumer Confidence Rule |
| Feb 3, 2014 | Michigan | Administrative penalty | 61 violations: Total Coliform, Arsenic, Barium, Chromium (total), Nickel |
| Feb 3, 2014 | Michigan | Boil water order | 61 violations: Total Coliform, Arsenic, Barium, Chromium (total), Nickel |
| Oct 24, 2013 | Michigan | Boil water order | 10 violations: Total Coliform, Combined Radium (-226 and -228), Arsenic, Lead and Copper Rule |
| Mar 31, 2006 | Michigan | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Jul 23, 2001 | Michigan | Boil water order | 1 violation (1 health-based): Total Coliform |
| Sep 2, 1993 | Michigan | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
Arsenic
6 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Groundwater Rule
4 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
EPA lists 2 wells for Green Brook Estates, all for emergency, seasonal or other part-time use.
Annual water quality report
Green Brook Estates must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Green Brook Estates for a copy.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Michigan.
Certified drinking water labs by state EPA guidance for private wells