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LAMONT WATER SYSTEM

PWS ID: WA5345650 · Lamont, Washington 99017

LAMONT WATER SYSTEM serves 136 people in Lamont, Washington using Groundwater water sources. It has 86 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LAMONT WATER SYSTEM

LAMONT WATER SYSTEM is a local-owned community water system that delivers drinking water to 136 residents in Lamont, Washington (Whitman County) through 47 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 86 total violations for this system , of which 9 (10%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 73 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 Revised Total Coliform Rule, recorded in 9 violations (MON). 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. LAMONT WATER SYSTEM's 86 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
136
Total Violations
86
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
47
County
Whitman
School/Daycare
No
MCL Violations
9
Monitoring Violations
73
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 9 2022
Coliform (TCR) MR 8 2015
Coliform (TCR) MCL 8 2006
Diquat MR 7 2007
Pentachlorophenol MR 3 2014
Dalapon MR 2 2014
Barium MR 2 2008
Chromium MR 2 2008
Fluoride MR 2 2008
Consumer Confidence Rule Other 2 2016
Dinoseb MR 2 2014
Mercury MR 2 2008
Arsenic MR 2 2008
Cadmium MR 2 2008
Lead and Copper Rule MR 2 2010
Selenium MR 2 2008
Picloram MR 2 2014
2,4,5-TP MR 2 2014
BHC-GAMMA MR 1 2008
Di(2-ethylhexyl) adipate MR 1 2008
Simazine MR 1 2008
LASSO MR 1 2008
Heptachlor MR 1 2008
Heptachlor epoxide MR 1 2008
Benzo(a)pyrene MR 1 2008
Nickel MR 1 2008
Beryllium, Total MR 1 2008
Gross Alpha, Excl. Radon and U MR 1 1979
Thallium, Total MR 1 2008
Atrazine 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 LAMONT WATER SYSTEM.

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 WA5345650 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 LAMONT WATER SYSTEM 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 Revised Total Coliform Rule MON 9 SDWIS / WA5345650 / 8000
2016 Consumer Confidence Rule Other 2 SDWIS / WA5345650 / 7000
2015 Coliform (TCR) MR 8 SDWIS / WA5345650 / 3100
2014 Pentachlorophenol MR 3 SDWIS / WA5345650 / 2326
2014 Dalapon MR 2 SDWIS / WA5345650 / 2031
2014 Dinoseb MR 2 SDWIS / WA5345650 / 2041
2014 Picloram MR 2 SDWIS / WA5345650 / 2040
2014 2,4,5-TP MR 2 SDWIS / WA5345650 / 2110
2010 Lead and Copper Rule MR 2 SDWIS / WA5345650 / 5000
2008 Barium MR 2 SDWIS / WA5345650 / 1010
2008 Chromium MR 2 SDWIS / WA5345650 / 1020
2008 Fluoride MR 2 SDWIS / WA5345650 / 1025
2008 Mercury MR 2 SDWIS / WA5345650 / 1035
2008 Arsenic MR 2 SDWIS / WA5345650 / 1005
2008 Cadmium MR 2 SDWIS / WA5345650 / 1015

How LAMONT WATER SYSTEM Compares

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

Metric LAMONT WATER SYSTEM Washington avg Federal benchmark
Total violations 86 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 136 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 LAMONT WATER SYSTEM water safe to drink? ▼
LAMONT WATER SYSTEM (PWS ID: WA5345650) has 86 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 136 people using Groundwater sources.
How many people does LAMONT WATER SYSTEM serve? ▼
LAMONT WATER SYSTEM serves 136 people in Lamont, Washington. It is a Local-owned system using Groundwater water sources with 47 service connections.
What type of violations does LAMONT WATER SYSTEM have? ▼
LAMONT WATER SYSTEM has 86 total violations: 9 health-based violations (MCL exceedances or treatment failures), 73 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LAMONT WATER SYSTEM water? ▼
No PFAS testing data is available for LAMONT WATER SYSTEM under the EPA's UCMR5 monitoring program.
What water source does LAMONT WATER SYSTEM use? ▼
LAMONT WATER SYSTEM 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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