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MADISON ESTATES

PWS ID: 105300144 · TULALIP, 10 98271

MADISON ESTATES serves 86 people in TULALIP, 10 using Groundwater water sources. It has 179 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MADISON ESTATES

MADISON ESTATES is a native american-owned community water system that delivers drinking water to 86 residents in TULALIP, 10 through 24 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 179 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 176 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 4 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 10, EPA tracks 158 public water systems serving 142,574 people, with 31,953 cumulative violations and 1,055 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 202.2 violations. MADISON ESTATES's 179 violations sit below the 10 average. Statewide, 2 of 10 UCMR5-tested systems have reported PFAS detections (20%). 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
86
Total Violations
179
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
24
School/Daycare
No
MCL Violations
0
Monitoring Violations
176
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 4 2017
cis-1,2-Dichloroethylene MR 4 2017
Xylenes, Total MR 4 2017
DICHLOROMETHANE MR 4 2017
o-Dichlorobenzene MR 4 2017
p-Dichlorobenzene MR 4 2017
Vinyl chloride MR 4 2017
1,1-Dichloroethylene MR 4 2017
1,2-Dichloroethane MR 4 2017
Carbon tetrachloride MR 4 2017
1,2-Dichloropropane MR 4 2017
Trichloroethylene MR 4 2017
Benzene MR 4 2017
Toluene MR 4 2017
Ethylbenzene MR 4 2017
Styrene MR 4 2017
Total Haloacetic Acids (HAA5) MR 4 2022
CHLOROBENZENE MR 4 2017
trans-1,2-Dichloroethylene MR 4 2017
1,1,1-Trichloroethane MR 4 2017
1,1,2-Trichloroethane MR 4 2017
Tetrachloroethylene MR 4 2017
Chlorine MR 3 2019
Consumer Confidence Rule Other 3 2015
Nitrate MR 3 2019
TTHM MR 3 2022
Endrin MR 2 2010
Total Polychlorinated Biphenyls (PCB) MR 2 2010
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2010
Chlordane MR 2 2010

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 MADISON ESTATES.

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 105300144 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

10 Drinking Water Authority

10's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find 10 regulator via EPA SDWIS

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
2022 Total Haloacetic Acids (HAA5) MR 4 SDWIS / 105300144 / 2456
2022 TTHM MR 3 SDWIS / 105300144 / 2950
2019 Chlorine MR 3 SDWIS / 105300144 / 0999
2019 Nitrate MR 3 SDWIS / 105300144 / 1040
2019 Lead and Copper Rule MR 2 SDWIS / 105300144 / 5000
2017 1,2,4-Trichlorobenzene MR 4 SDWIS / 105300144 / 2378
2017 cis-1,2-Dichloroethylene MR 4 SDWIS / 105300144 / 2380
2017 Xylenes, Total MR 4 SDWIS / 105300144 / 2955
2017 DICHLOROMETHANE MR 4 SDWIS / 105300144 / 2964
2017 o-Dichlorobenzene MR 4 SDWIS / 105300144 / 2968
2017 p-Dichlorobenzene MR 4 SDWIS / 105300144 / 2969
2017 Vinyl chloride MR 4 SDWIS / 105300144 / 2976
2017 1,1-Dichloroethylene MR 4 SDWIS / 105300144 / 2977
2017 1,2-Dichloroethane MR 4 SDWIS / 105300144 / 2980
2017 Carbon tetrachloride MR 4 SDWIS / 105300144 / 2982

How MADISON ESTATES Compares

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

Metric MADISON ESTATES 10 avg Federal benchmark
Total violations 179 202.2 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 6.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 20% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 86 902 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 158 regulated public water systems in 10.

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

Is MADISON ESTATES water safe to drink? ▼
MADISON ESTATES (PWS ID: 105300144) has 179 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 86 people using Groundwater sources.
How many people does MADISON ESTATES serve? ▼
MADISON ESTATES serves 86 people in TULALIP, 10. It is a Native American-owned system using Groundwater water sources with 24 service connections.
What type of violations does MADISON ESTATES have? ▼
MADISON ESTATES has 179 total violations: 0 health-based violations (MCL exceedances or treatment failures), 176 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MADISON ESTATES water? ▼
No PFAS testing data is available for MADISON ESTATES under the EPA's UCMR5 monitoring program.
What water source does MADISON ESTATES use? ▼
MADISON ESTATES 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.

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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.

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