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Community Water System · PWS MI0067101

Regency at Whitmore Lake

Whitmore Lake, Michigan 48189 - drinking water served from groundwater sources to 190 people, tracked in EPA SDWIS and UCMR5.

190
People served
60
EPA violations
21
Health-based
Untested
UCMR5 result

The verdict

EPA records 60 drinking-water violations at Regency at Whitmore Lake, 35% of them health-based - above the Michigan per-system average.

60
Total EPA violations on record
35%
Health-based (MCL / treatment failure)
190
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Regency at Whitmore Lake

Regency at Whitmore Lake is a private-owned community water system that delivers drinking water to 190 residents in Whitmore Lake, Michigan (Washtenaw County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 60 total violations for this system , of which 21 (35%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 22 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 18 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, 44 of 318 UCMR5-tested systems have reported PFAS detections (13.8%).

Regency at Whitmore Lake's 60 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
190
Total Violations
60
Health-Based Violations
21
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
1
County
Washtenaw
School/Daycare
No
MCL Violations
18
Monitoring Violations
22
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 18 2008
Coliform (TCR) MR 6 1996
Lead and Copper Rule MR 5 2018
Arsenic MR 5 2005
Consumer Confidence Rule Other 4 2022
LEAD AND COPPER RULE REVISIONS RPT 3 2024
Public Notice Other 3 2025
LEAD AND COPPER RULE REVISIONS TT 3 2024
Revised Total Coliform Rule RPT 3 2023
Revised Total Coliform Rule MON 3 2025
Nitrate-Nitrite MR 2 1993
Nitrate MR 1 1995

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 Regency at Whitmore Lake.

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 MI0067101 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 Regency at Whitmore Lake 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 Public Notice Other 3 SDWIS / MI0067101 / 7500
2025 Revised Total Coliform Rule MON 3 SDWIS / MI0067101 / 8000
2024 LEAD AND COPPER RULE REVISIONS RPT 3 SDWIS / MI0067101 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 3 SDWIS / MI0067101 / 5200
2023 Revised Total Coliform Rule RPT 3 SDWIS / MI0067101 / 8000
2022 Consumer Confidence Rule Other 4 SDWIS / MI0067101 / 7000
2018 Lead and Copper Rule MR 5 SDWIS / MI0067101 / 5000
2008 Arsenic MCL 18 SDWIS / MI0067101 / 1005
2005 Arsenic MR 5 SDWIS / MI0067101 / 1005
1996 Coliform (TCR) MR 6 SDWIS / MI0067101 / 3100
1995 Nitrate MR 1 SDWIS / MI0067101 / 1040
1993 Nitrate-Nitrite MR 2 SDWIS / MI0067101 / 1038

How Regency at Whitmore Lake Compares

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

Metric Regency at Whitmore Lake Michigan avg Federal benchmark
Total violations 60 23.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 21 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 13.8% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 190 830 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 Regency at Whitmore Lake water safe to drink? ▼
Regency at Whitmore Lake (PWS ID: MI0067101) has 60 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 190 people using Groundwater sources.
How many people does Regency at Whitmore Lake serve? ▼
Regency at Whitmore Lake serves 190 people in Whitmore Lake, Michigan. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Regency at Whitmore Lake have? ▼
Regency at Whitmore Lake has 60 total violations: 21 health-based violations (MCL exceedances or treatment failures), 22 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Regency at Whitmore Lake water? ▼
No PFAS testing data is available for Regency at Whitmore Lake under the EPA's UCMR5 monitoring program.
What water source does Regency at Whitmore Lake use? ▼
Regency at Whitmore Lake 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.