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DAMMAN SCHOOL

PWS ID: WA5317765 · Ellensburg, Washington 98926-8745

DAMMAN SCHOOL serves 45 people in Ellensburg, Washington using Groundwater water sources. It has 458 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: DAMMAN SCHOOL

DAMMAN SCHOOL is a private-owned non-transient non-community water system that delivers drinking water to 45 residents in Ellensburg, Washington (Kittitas County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 458 total violations for this system , of which 4 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 454 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 33 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. DAMMAN SCHOOL's 458 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
45
Total Violations
458
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
2
County
Kittitas
School/Daycare
Yes
MCL Violations
4
Monitoring Violations
454
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 33 2014
Lead and Copper Rule MR 28 2016
Nitrate MR 23 2018
Pentachlorophenol MR 14 2006
Aldicarb MR 7 2006
BHC-GAMMA MR 7 2006
Benzo(a)pyrene MR 7 2006
DICHLOROMETHANE MR 7 2006
Styrene MR 7 2006
Hexachlorocyclopentadiene MR 7 2006
Trichloroethylene MR 7 2006
p-Dichlorobenzene MR 7 2006
Benzene MR 7 2006
Ethylbenzene MR 7 2006
Carbofuran MR 7 2006
Carbon tetrachloride MR 7 2006
1,2-Dichloroethane MR 7 2006
Dinoseb MR 7 2006
Di(2-ethylhexyl) adipate MR 7 2006
Simazine MR 7 2006
CHLOROBENZENE MR 7 2006
OXAMYL MR 7 2006
cis-1,2-Dichloroethylene MR 7 2006
Endrin MR 7 2006
Chlordane MR 7 2006
1,1,2-Trichloroethane MR 7 2006
1,1,1-Trichloroethane MR 7 2006
1,1-Dichloroethylene MR 7 2006
Tetrachloroethylene MR 7 2006
HEXACHLOROBENZENE MR 7 2006

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 DAMMAN SCHOOL.

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 WA5317765 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 DAMMAN SCHOOL 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
2024 Revised Total Coliform Rule MON 2 SDWIS / WA5317765 / 8000
2022 TTHM MR 2 SDWIS / WA5317765 / 2950
2022 Total Haloacetic Acids (HAA5) MR 2 SDWIS / WA5317765 / 2456
2018 Nitrate MR 23 SDWIS / WA5317765 / 1040
2016 Lead and Copper Rule MR 28 SDWIS / WA5317765 / 5000
2014 Coliform (TCR) MR 33 SDWIS / WA5317765 / 3100
2014 Arsenic MR 5 SDWIS / WA5317765 / 1005
2014 Barium MR 3 SDWIS / WA5317765 / 1010
2014 Chromium MR 3 SDWIS / WA5317765 / 1020
2014 Mercury MR 3 SDWIS / WA5317765 / 1035
2014 Nickel MR 3 SDWIS / WA5317765 / 1036
2014 Thallium, Total MR 3 SDWIS / WA5317765 / 1085
2014 Cadmium MR 3 SDWIS / WA5317765 / 1015
2014 CYANIDE MR 3 SDWIS / WA5317765 / 1024
2014 Selenium MR 3 SDWIS / WA5317765 / 1045

How DAMMAN SCHOOL Compares

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

Metric DAMMAN SCHOOL Washington avg Federal benchmark
Total violations 458 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 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 45 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 DAMMAN SCHOOL water safe to drink? ▼
DAMMAN SCHOOL (PWS ID: WA5317765) has 458 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 45 people using Groundwater sources.
How many people does DAMMAN SCHOOL serve? ▼
DAMMAN SCHOOL serves 45 people in Ellensburg, Washington. It is a Private-owned system using Groundwater water sources with 2 service connections.
What type of violations does DAMMAN SCHOOL have? ▼
DAMMAN SCHOOL has 458 total violations: 4 health-based violations (MCL exceedances or treatment failures), 454 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in DAMMAN SCHOOL water? ▼
No PFAS testing data is available for DAMMAN SCHOOL under the EPA's UCMR5 monitoring program.
What water source does DAMMAN SCHOOL use? ▼
DAMMAN SCHOOL 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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