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States → EPA Region 10 — Tribal Water Systems

Community Water System · PWS 105300031

Sackman

Suquamish, EPA Region 10 — Tribal Water Systems 98392 - drinking water served from groundwater sources to 500 people, tracked in EPA SDWIS and UCMR5.

500
People served
48
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 48 drinking-water violations at Sackman, 2% of them health-based.

48
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
500
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sackman

Sackman is a native american-owned community water system that delivers drinking water to 500 residents in Suquamish, EPA Region 10 — Tribal Water Systems through 41 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 48 total violations for this system , of which 1 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 39 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 12 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 10 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
500
Total Violations
48
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
41
School/Daycare
No
MCL Violations
1
Monitoring Violations
39
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 12 2008
Consumer Confidence Rule Other 5 2006
Gross Alpha, Excl. Radon and U MR 5 1996
Chlorine MR 4 2024
Nitrate MR 3 2001
Coliform (TCR) MCL 1 2001
OXAMYL MR 1 2008
Glyphosate MR 1 2008
Diquat MR 1 2008
Arsenic MR 1 2014
Antimony, Total MR 1 1999
Total Haloacetic Acids (HAA5) MR 1 2004
Lead and Copper Rule MR 1 2021
ETHYLENE DIBROMIDE MR 1 2008
Benzene MR 1 1999
Atrazine MR 1 1999
Endothall MR 1 2008
TTHM MR 1 2004
2,3,7,8-TCDD MR 1 2008
Carbofuran MR 1 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 1 2008

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 Sackman.

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 105300031 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 10 — Tribal Water Systems Drinking Water Authority

EPA Region 10 — Tribal Water Systems'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
2024 Chlorine MR 4 SDWIS / 105300031 / 0999
2021 Lead and Copper Rule MR 1 SDWIS / 105300031 / 5000
2014 Arsenic MR 1 SDWIS / 105300031 / 1005
2008 Coliform (TCR) MR 12 SDWIS / 105300031 / 3100
2008 OXAMYL MR 1 SDWIS / 105300031 / 2036
2008 Glyphosate MR 1 SDWIS / 105300031 / 2034
2008 Diquat MR 1 SDWIS / 105300031 / 2032
2008 ETHYLENE DIBROMIDE MR 1 SDWIS / 105300031 / 2946
2008 Endothall MR 1 SDWIS / 105300031 / 2033
2008 2,3,7,8-TCDD MR 1 SDWIS / 105300031 / 2063
2008 Carbofuran MR 1 SDWIS / 105300031 / 2046
2008 1,2-DIBROMO-3-CHLOROPROPANE MR 1 SDWIS / 105300031 / 2931
2006 Consumer Confidence Rule Other 5 SDWIS / 105300031 / 7000
2004 Total Haloacetic Acids (HAA5) MR 1 SDWIS / 105300031 / 2456
2004 TTHM MR 1 SDWIS / 105300031 / 2950

How Sackman Compares

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

Metric Sackman EPA Region 10 — Tribal Water Systems avg Federal benchmark
Total violations 48 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 500 - Sizing context for compliance burden

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

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 Sackman water safe to drink? ▼
Sackman (PWS ID: 105300031) has 48 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 500 people using Groundwater sources.
How many people does Sackman serve? ▼
Sackman serves 500 people in Suquamish, EPA Region 10 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 41 service connections.
What type of violations does Sackman have? ▼
Sackman has 48 total violations: 1 health-based violations (MCL exceedances or treatment failures), 39 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sackman water? ▼
No PFAS testing data is available for Sackman under the EPA's UCMR5 monitoring program.
What water source does Sackman use? ▼
Sackman 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.