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Community Water System · PWS 105300085

Indianola

Suquamish, EPA Region 10 — Tribal Water Systems 98392 - drinking water served from groundwater sources to 78 people, tracked in EPA SDWIS and UCMR5.

78
People served
89
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 89 drinking-water violations at Indianola, 3% of them health-based.

89
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
78
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Indianola

Indianola is a native american-owned community water system that delivers drinking water to 78 residents in Suquamish, EPA Region 10 — Tribal Water Systems through 29 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 89 total violations for this system , of which 3 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 79 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 24 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
78
Total Violations
89
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
29
School/Daycare
No
MCL Violations
3
Monitoring Violations
79
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 24 2008
Chlorine MR 5 2008
Nitrate MR 5 2006
Consumer Confidence Rule Other 4 2006
Coliform (TCR) MCL 3 2004
Chromium MR 1 2005
CYANIDE MR 1 2005
Mercury MR 1 2005
Nickel MR 1 2005
Antimony, Total MR 1 2005
Beryllium, Total MR 1 2005
Thallium, Total MR 1 2005
Toxaphene MR 1 2005
Diquat MR 1 2005
Endothall MR 1 2005
Glyphosate MR 1 2005
OXAMYL MR 1 2005
Simazine MR 1 2005
Total Haloacetic Acids (HAA5) MR 1 2004
Di(2-ethylhexyl) phthalate MR 1 2005
Picloram MR 1 2005
Carbofuran MR 1 2005
Atrazine MR 1 2005
LASSO MR 1 2005
Heptachlor MR 1 2005
2,4-D MR 1 2005
2,4,5-TP MR 1 2005
Benzo(a)pyrene MR 1 2005
Total Polychlorinated Biphenyls (PCB) MR 1 2005
Lead and Copper Rule MR 1 2021

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 Indianola.

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 105300085 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
2021 Lead and Copper Rule MR 1 SDWIS / 105300085 / 5000
2008 Coliform (TCR) MR 24 SDWIS / 105300085 / 3100
2008 Chlorine MR 5 SDWIS / 105300085 / 0999
2006 Nitrate MR 5 SDWIS / 105300085 / 1040
2006 Consumer Confidence Rule Other 4 SDWIS / 105300085 / 7000
2005 Chromium MR 1 SDWIS / 105300085 / 1020
2005 CYANIDE MR 1 SDWIS / 105300085 / 1024
2005 Mercury MR 1 SDWIS / 105300085 / 1035
2005 Nickel MR 1 SDWIS / 105300085 / 1036
2005 Antimony, Total MR 1 SDWIS / 105300085 / 1074
2005 Beryllium, Total MR 1 SDWIS / 105300085 / 1075
2005 Thallium, Total MR 1 SDWIS / 105300085 / 1085
2005 Toxaphene MR 1 SDWIS / 105300085 / 2020
2005 Diquat MR 1 SDWIS / 105300085 / 2032
2005 Endothall MR 1 SDWIS / 105300085 / 2033

How Indianola Compares

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

Metric Indianola EPA Region 10 — Tribal Water Systems avg Federal benchmark
Total violations 89 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 78 - 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 Indianola water safe to drink? ▼
Indianola (PWS ID: 105300085) has 89 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 78 people using Groundwater sources.
How many people does Indianola serve? ▼
Indianola serves 78 people in Suquamish, EPA Region 10 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 29 service connections.
What type of violations does Indianola have? ▼
Indianola has 89 total violations: 3 health-based violations (MCL exceedances or treatment failures), 79 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Indianola water? ▼
No PFAS testing data is available for Indianola under the EPA's UCMR5 monitoring program.
What water source does Indianola use? ▼
Indianola 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.