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YACOLT

PWS ID: WA5399000 · Vancouver, Washington 98668

YACOLT serves 3,034 people in Vancouver, Washington using Groundwater water sources. It has 80 recorded EPA violations, including 16 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: YACOLT

YACOLT is a local-owned community water system that delivers drinking water to 3,034 residents in Vancouver, Washington (Clark County) through 700 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 80 total violations for this system , of which 16 (20%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 62 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 Coliform (TCR), recorded in 15 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. YACOLT's 80 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). 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
3,034
Total Violations
80
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
700
County
Clark
School/Daycare
No
MCL Violations
15
Monitoring Violations
62
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 15 1997
Pentachlorophenol MR 4 2002
Di(2-ethylhexyl) adipate MR 2 2002
Dinoseb MR 2 2002
Dalapon MR 2 2002
2,4,5-TP MR 2 2002
Toxaphene MR 2 2002
HEXACHLOROBENZENE MR 2 2002
Chlordane MR 2 2002
Aldicarb sulfoxide MR 2 2002
BHC-GAMMA MR 2 2002
Methoxychlor MR 2 2002
Aldicarb sulfone MR 2 2002
Heptachlor MR 2 2002
LASSO MR 2 2002
OXAMYL MR 2 2002
Endrin MR 2 2002
Simazine MR 2 2002
Aldicarb MR 2 2002
Hexachlorocyclopentadiene MR 2 2002
Picloram MR 2 2002
Carbofuran MR 2 2002
Benzo(a)pyrene MR 2 2002
Atrazine MR 2 2002
Di(2-ethylhexyl) phthalate MR 2 2002
Heptachlor epoxide MR 2 2002
Consumer Confidence Rule Other 1 2010
Lead and Copper Rule TT 1 2022
Coliform (TCR) MR 1 1992
Nitrate MR 1 1979

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 YACOLT.

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 WA5399000 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects YACOLT under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

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 Lead and Copper Rule TT 1 SDWIS / WA5399000 / 5000
2010 Consumer Confidence Rule Other 1 SDWIS / WA5399000 / 7000
2002 Pentachlorophenol MR 4 SDWIS / WA5399000 / 2326
2002 Di(2-ethylhexyl) adipate MR 2 SDWIS / WA5399000 / 2035
2002 Dinoseb MR 2 SDWIS / WA5399000 / 2041
2002 Dalapon MR 2 SDWIS / WA5399000 / 2031
2002 2,4,5-TP MR 2 SDWIS / WA5399000 / 2110
2002 Toxaphene MR 2 SDWIS / WA5399000 / 2020
2002 HEXACHLOROBENZENE MR 2 SDWIS / WA5399000 / 2274
2002 Chlordane MR 2 SDWIS / WA5399000 / 2959
2002 Aldicarb sulfoxide MR 2 SDWIS / WA5399000 / 2043
2002 BHC-GAMMA MR 2 SDWIS / WA5399000 / 2010
2002 Methoxychlor MR 2 SDWIS / WA5399000 / 2015
2002 Aldicarb sulfone MR 2 SDWIS / WA5399000 / 2044
2002 Heptachlor MR 2 SDWIS / WA5399000 / 2065

How YACOLT Compares

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

Metric YACOLT Washington avg Federal benchmark
Total violations 80 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 16 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 3,034 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

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 YACOLT water safe to drink? ▼
YACOLT (PWS ID: WA5399000) has 80 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,034 people using Groundwater sources.
How many people does YACOLT serve? ▼
YACOLT serves 3,034 people in Vancouver, Washington. It is a Local-owned system using Groundwater water sources with 700 service connections.
What type of violations does YACOLT have? ▼
YACOLT has 80 total violations: 16 health-based violations (MCL exceedances or treatment failures), 62 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in YACOLT water? ▼
No PFAS testing data is available for YACOLT under the EPA's UCMR5 monitoring program.
What water source does YACOLT use? ▼
YACOLT 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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial