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LOWER MONUMENTAL DAM - NORTH

PWS ID: WA5348720 · Kahlotus, Washington 99335

LOWER MONUMENTAL DAM - NORTH serves 56 people in Kahlotus, Washington using Groundwater water sources. It has 616 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LOWER MONUMENTAL DAM - NORTH

LOWER MONUMENTAL DAM - NORTH is a federal-owned non-transient non-community water system that delivers drinking water to 56 residents in Kahlotus, Washington (Franklin County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 616 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 615 monitoring and reporting violations are on file. The most recent violation on record dates to 2011.

The most frequently cited contaminant at this system is BHC-GAMMA, recorded in 40 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 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. LOWER MONUMENTAL DAM - NORTH's 616 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
56
Total Violations
616
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Federal
Connections
2
County
Franklin
School/Daycare
No
MCL Violations
0
Monitoring Violations
615
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
BHC-GAMMA MR 40 2007
Toxaphene MR 40 2007
Di(2-ethylhexyl) adipate MR 40 2007
Di(2-ethylhexyl) phthalate MR 40 2007
HEXACHLOROBENZENE MR 40 2007
Benzo(a)pyrene MR 40 2007
Chlordane MR 40 2007
Endrin MR 40 2007
Methoxychlor MR 40 2007
Hexachlorocyclopentadiene MR 40 2007
Atrazine MR 40 2007
LASSO MR 40 2007
Heptachlor epoxide MR 40 2007
Simazine MR 40 2007
Heptachlor MR 40 2007
Coliform (TCR) MR 10 2011
Pentachlorophenol MR 5 2007

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 LOWER MONUMENTAL DAM - NORTH.

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 WA5348720 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 LOWER MONUMENTAL DAM - NORTH 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
2011 Coliform (TCR) MR 10 SDWIS / WA5348720 / 3100
2007 BHC-GAMMA MR 40 SDWIS / WA5348720 / 2010
2007 Toxaphene MR 40 SDWIS / WA5348720 / 2020
2007 Di(2-ethylhexyl) adipate MR 40 SDWIS / WA5348720 / 2035
2007 Di(2-ethylhexyl) phthalate MR 40 SDWIS / WA5348720 / 2039
2007 HEXACHLOROBENZENE MR 40 SDWIS / WA5348720 / 2274
2007 Benzo(a)pyrene MR 40 SDWIS / WA5348720 / 2306
2007 Chlordane MR 40 SDWIS / WA5348720 / 2959
2007 Endrin MR 40 SDWIS / WA5348720 / 2005
2007 Methoxychlor MR 40 SDWIS / WA5348720 / 2015
2007 Hexachlorocyclopentadiene MR 40 SDWIS / WA5348720 / 2042
2007 Atrazine MR 40 SDWIS / WA5348720 / 2050
2007 LASSO MR 40 SDWIS / WA5348720 / 2051
2007 Heptachlor epoxide MR 40 SDWIS / WA5348720 / 2067
2007 Simazine MR 40 SDWIS / WA5348720 / 2037

How LOWER MONUMENTAL DAM - NORTH Compares

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

Metric LOWER MONUMENTAL DAM - NORTH Washington avg Federal benchmark
Total violations 616 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 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 56 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 LOWER MONUMENTAL DAM - NORTH water safe to drink? ▼
LOWER MONUMENTAL DAM - NORTH (PWS ID: WA5348720) has 616 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 56 people using Groundwater sources.
How many people does LOWER MONUMENTAL DAM - NORTH serve? ▼
LOWER MONUMENTAL DAM - NORTH serves 56 people in Kahlotus, Washington. It is a Federal-owned system using Groundwater water sources with 2 service connections.
What type of violations does LOWER MONUMENTAL DAM - NORTH have? ▼
LOWER MONUMENTAL DAM - NORTH has 616 total violations: 0 health-based violations (MCL exceedances or treatment failures), 615 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LOWER MONUMENTAL DAM - NORTH water? ▼
No PFAS testing data is available for LOWER MONUMENTAL DAM - NORTH under the EPA's UCMR5 monitoring program.
What water source does LOWER MONUMENTAL DAM - NORTH use? ▼
LOWER MONUMENTAL DAM - NORTH uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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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