Public water system record
Deerfield
Serves Deerfield, Lenawee County, MI · 943 people served
Federal records show 10 health-based violations and 22 monitoring/reporting issues for Deerfield in the last ten years. The most serious issue in this window was a resolved ETHYLENE DIBROMIDE violation.
System profile
Source water
Surface water
ZIP
49238
EPA system ID
MI0001770
- Health-based violations, last 10 years
- 10
- Resolved
- 10
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 22
Key facts
- Deerfield draws water from 1 surface water intake.
- Highest measured level in the last 10 years: ETHYLENE DIBROMIDE, 0.00006 mg/L, federal limit 0.00005 mg/L (1.2 times the limit), 2025.
- Most recent formal enforcement: compliance order (no penalty) by Michigan, October 2006.
- Record on file since 1999, with 82 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 216 unknown out of 407 service lines.
Check whether Deerfield 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 |
|---|---|---|---|---|
|
ETHYLENE DIBROMIDE
Contaminant limit exceeded
Measured 0.00006 mg/L, federal limit 0.00005 mg/L (1.2 times the limit)
|
320 | Apr 1, 2025 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2017 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2017 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2017 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2017 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2017 | Resolved | No |
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Jan 1, 2017 | Resolved | Yes |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Dec 1, 2016 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Nov 1, 2016 | Resolved | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2016 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jul 1, 2024 | Resolved |
|
Chlordane
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Total Polychlorinated Biphenyls (PCB)
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
LASSO
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Atrazine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Simazine
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
Endrin
Monitoring and reporting
|
Oct 1, 2022 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Revised Total Coliform Rule
RPT
|
Oct 11, 2018 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Feb 1, 2017 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Jan 1, 2017 | Resolved |
Full record since 1999
EPA's records for Deerfield go back to 1999. Before October 19, 2016 they list 82 health-based violations (82 resolved) and 17 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2000s | 44 | 14 |
| 2010 to October 18, 2016 | 37 | 3 |
| October 19, 2016 to 2019 | 8 | 3 |
| 2020s | 1 | 19 |
Most recent health-based violation before October 19, 2016: Long Term 2 Enhanced Surface Water Treatment Rule, began October 2016, Resolved.
Show all 82 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2016 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jul 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
May 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Apr 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 2015 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Dec 1, 2014 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2014 | Resolved |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2014 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
Apr 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Apr 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jan 1, 2011 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jan 1, 2011 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Oct 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Oct 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jul 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.1 mg/L, federal limit 0.06 mg/L (1.7 times the limit)
|
Jul 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Apr 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.09 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Apr 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Jan 1, 2010 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.08 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Jan 1, 2010 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.11 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
Oct 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.077 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Oct 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.075 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Jul 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
Jul 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.094 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Apr 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.077 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
|
Apr 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.089 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Jan 1, 2009 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
Jan 1, 2009 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
|
Oct 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Oct 1, 2008 | Resolved |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.098 mg/L, federal limit 0.06 mg/L (1.6 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.086 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
Jul 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2008 | Resolved |
32 older violations are not listed here. EPA ECHO has the complete list.
Enforcement actions
Michigan regulators took 1 formal enforcement action against Deerfield in 2006. The most recent was a compliance order (no penalty) in October 2006.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 2, 2006 | Michigan | Compliance order (no penalty) | 36 violations (36 health-based): Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
What the violations mean
Long Term 2 Enhanced Surface Water Treatment Rule
8 incidentsThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
ETHYLENE DIBROMIDE
1 incidentTest results for ETHYLENE DIBROMIDE were above the federal limit (a maximum contaminant level violation).
The utility had to notify customers about this violation.
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Where the water comes from
Deerfield draws water from 1 surface water intake.
Annual water quality report
Deerfield 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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