HALES HAPPINESS SUBDIVISION
PWS ID: WI2410575 · HALES CORNERS, Wisconsin 53130
HALES HAPPINESS SUBDIVISION serves 400 people in HALES CORNERS, Wisconsin using Groundwater water sources. It has 93 recorded EPA violations, including 11 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: HALES HAPPINESS SUBDIVISION
HALES HAPPINESS SUBDIVISION is a private-owned community water system that delivers drinking water to 400 residents in HALES CORNERS, Wisconsin (Milwaukee County) through 180 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 93 total violations for this system , of which 11 (12%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 57 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 27 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 Wisconsin, EPA tracks 10,988 public water systems serving 5,131,439 people, with 285,161 cumulative violations and 58,688 health-based violations on record. About 72% of systems in the state carry at least one violation, and state-wide the average per system is 26 violations. HALES HAPPINESS SUBDIVISION's 93 violations sit above the Wisconsin average. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 180
- County
- Milwaukee
- School/Daycare
- No
- MCL Violations
- 10
- Monitoring Violations
- 57
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 27 | 2009 |
| Revised Total Coliform Rule | MON | 22 | 2025 |
| Consumer Confidence Rule | Other | 16 | 2025 |
| Coliform (TCR) | MCL | 10 | 2005 |
| Public Notice | Other | 4 | 2024 |
| Lead and Copper Rule | MR | 4 | 2014 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 1998 |
| LEAD AND COPPER RULE REVISIONS | TT | 1 | 2024 |
| LEAD AND COPPER RULE REVISIONS | RPT | 1 | 2024 |
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 HALES HAPPINESS SUBDIVISION.
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 WI2410575 on SDWISSource: EPA SDWIS Federal Reports Search
Wisconsin Drinking Water Authority
Wisconsin DNR — Drinking Water and Groundwater is the primacy agency that licenses and inspects HALES HAPPINESS SUBDIVISION under EPA-delegated authority.
Open WI regulator portalViolation 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 | Revised Total Coliform Rule | MON | 22 | SDWIS / WI2410575 / 8000 |
| 2025 | Consumer Confidence Rule | Other | 16 | SDWIS / WI2410575 / 7000 |
| 2024 | Public Notice | Other | 4 | SDWIS / WI2410575 / 7500 |
| 2024 | LEAD AND COPPER RULE REVISIONS | TT | 1 | SDWIS / WI2410575 / 5200 |
| 2024 | LEAD AND COPPER RULE REVISIONS | RPT | 1 | SDWIS / WI2410575 / 5200 |
| 2014 | Lead and Copper Rule | MR | 4 | SDWIS / WI2410575 / 5000 |
| 2009 | Coliform (TCR) | MR | 27 | SDWIS / WI2410575 / 3100 |
| 2005 | Coliform (TCR) | MCL | 10 | SDWIS / WI2410575 / 3100 |
| 1998 | Gross Alpha, Excl. Radon and U | MR | 4 | SDWIS / WI2410575 / 4000 |
How HALES HAPPINESS SUBDIVISION Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | HALES HAPPINESS SUBDIVISION | Wisconsin avg | Federal benchmark |
|---|---|---|---|
| Total violations | 93 | 26 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 11 | 5.3 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 38.6% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 400 | 467 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,988 regulated public water systems in Wisconsin.
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 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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Related Data for Wisconsin
Read our methodology — how this data is sourced, computed, and verified.