PlainWater
States → Wisconsin

Community Water System · PWS WI2460973

Brighton Ridge Subdivision

Mequon, Wisconsin 53097 - drinking water served from groundwater sources to 200 people, tracked in EPA SDWIS and UCMR5.

200
People served
142
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 142 drinking-water violations at Brighton Ridge Subdivision - above the Wisconsin per-system average.

142
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
200
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Brighton Ridge Subdivision

Brighton Ridge Subdivision is a private-owned community water system that delivers drinking water to 200 residents in Mequon, Wisconsin (Ozaukee County) through 66 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 142 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 138 monitoring and reporting violations are on file. The most recent violation on record dates to 2003.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 8 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. Statewide, 78 of 202 UCMR5-tested systems have reported PFAS detections (38.6%).

Brighton Ridge Subdivision's 142 violations sit above the Wisconsin 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
200
Total Violations
142
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
66
County
Ozaukee
School/Daycare
No
MCL Violations
0
Monitoring Violations
138
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 8 1996
BHC-GAMMA MR 4 1995
Methoxychlor MR 4 1995
OXAMYL MR 4 1995
Dinoseb MR 4 1995
Hexachlorocyclopentadiene MR 4 1995
Aldicarb sulfoxide MR 4 1995
Aldicarb sulfone MR 4 1995
Carbofuran MR 4 1995
Aldicarb MR 4 1995
Atrazine MR 4 1995
Heptachlor epoxide MR 4 1995
HEXACHLOROBENZENE MR 4 1995
Arsenic MR 4 1995
Selenium MR 4 1995
Mercury MR 4 1995
Fluoride MR 4 1995
Barium MR 4 1995
Consumer Confidence Rule Other 4 2003
2,4,5-TP MR 4 1995
Dalapon MR 4 1995
Heptachlor MR 4 1995
Nitrite MR 4 1995
Endrin MR 4 1995
2,4-D MR 4 1995
Pentachlorophenol MR 4 1995
LASSO MR 4 1995
Total Polychlorinated Biphenyls (PCB) MR 4 1995
Simazine MR 4 1995
Picloram MR 4 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 Brighton Ridge Subdivision.

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 WI2460973 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Wisconsin Drinking Water Authority

Wisconsin DNR, Drinking Water and Groundwater is the primacy agency that licenses and inspects Brighton Ridge Subdivision under EPA-delegated authority.

Open WI regulator portal

Source: Wisconsin DNR, Drinking Water and Groundwater

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
2003 Consumer Confidence Rule Other 4 SDWIS / WI2460973 / 7000
1996 Coliform (TCR) MR 8 SDWIS / WI2460973 / 3100
1995 BHC-GAMMA MR 4 SDWIS / WI2460973 / 2010
1995 Methoxychlor MR 4 SDWIS / WI2460973 / 2015
1995 OXAMYL MR 4 SDWIS / WI2460973 / 2036
1995 Dinoseb MR 4 SDWIS / WI2460973 / 2041
1995 Hexachlorocyclopentadiene MR 4 SDWIS / WI2460973 / 2042
1995 Aldicarb sulfoxide MR 4 SDWIS / WI2460973 / 2043
1995 Aldicarb sulfone MR 4 SDWIS / WI2460973 / 2044
1995 Carbofuran MR 4 SDWIS / WI2460973 / 2046
1995 Aldicarb MR 4 SDWIS / WI2460973 / 2047
1995 Atrazine MR 4 SDWIS / WI2460973 / 2050
1995 Heptachlor epoxide MR 4 SDWIS / WI2460973 / 2067
1995 HEXACHLOROBENZENE MR 4 SDWIS / WI2460973 / 2274
1995 Arsenic MR 4 SDWIS / WI2460973 / 1005

How Brighton Ridge Subdivision Compares

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

Metric Brighton Ridge Subdivision Wisconsin avg Federal benchmark
Total violations 142 26 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 200 467 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 (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 Brighton Ridge Subdivision water safe to drink? ▼
Brighton Ridge Subdivision (PWS ID: WI2460973) has 142 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 200 people using Groundwater sources.
How many people does Brighton Ridge Subdivision serve? ▼
Brighton Ridge Subdivision serves 200 people in Mequon, Wisconsin. It is a Private-owned system using Groundwater water sources with 66 service connections.
What type of violations does Brighton Ridge Subdivision have? ▼
Brighton Ridge Subdivision has 142 total violations: 0 health-based violations (MCL exceedances or treatment failures), 138 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Brighton Ridge Subdivision water? ▼
No PFAS testing data is available for Brighton Ridge Subdivision under the EPA's UCMR5 monitoring program.
What water source does Brighton Ridge Subdivision use? ▼
Brighton Ridge Subdivision 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.