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Community Water System · PWS ID2290041

Troy City Of

Troy, Idaho 83871 - drinking water served from surface water sources to 850 people, tracked in EPA SDWIS and UCMR5.

850
People served
448
EPA violations
30
Health-based
Untested
UCMR5 result

The verdict

EPA records 448 drinking-water violations at Troy City Of, 7% of them health-based - above the Idaho per-system average.

448
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
850
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Troy City Of

Troy City Of is a local-owned community water system that delivers drinking water to 850 residents in Troy, Idaho (Latah County) through 411 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 448 total violations for this system , of which 30 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 393 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Chlorine, recorded in 28 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 Idaho, EPA tracks 2,005 public water systems serving 1,743,912 people, with 104,850 cumulative violations and 19,965 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 52.3 violations. Statewide, 40 of 60 UCMR5-tested systems have reported PFAS detections (66.7%).

Troy City Of's 448 violations sit above the Idaho average.

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
850
Total Violations
448
Health-Based Violations
30
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
411
County
Latah
School/Daycare
No
MCL Violations
20
Monitoring Violations
393
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 28 2021
Nitrate MR 20 2016
Surface Water Treatment Rule MR 19 2021
Revised Total Coliform Rule MON 18 2021
Coliform (TCR) MR 12 2016
Total Haloacetic Acids (HAA5) MR 11 2013
Surface Water Treatment Rule TT 10 2006
2,4-D MR 8 2013
2,4,5-TP MR 8 2013
Total Haloacetic Acids (HAA5) MCL 8 2016
Dinoseb MR 7 2013
Dalapon MR 7 2013
Picloram MR 7 2013
TTHM MR 7 2011
Arsenic MR 7 2016
Coliform (TCR) MCL 7 2010
Methoxychlor MR 6 2013
Toxaphene MR 6 2013
BHC-GAMMA MR 6 2013
Endrin MR 6 2013
Diquat MR 5 2013
Glyphosate MR 5 2013
Di(2-ethylhexyl) adipate MR 5 2013
Carbofuran MR 5 2013
Atrazine MR 5 2013
Heptachlor MR 5 2013
HEXACHLOROBENZENE MR 5 2013
Pentachlorophenol MR 5 2013
1,2-DIBROMO-3-CHLOROPROPANE MR 5 2013
ETHYLENE DIBROMIDE MR 5 2013

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 Troy City Of.

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 ID2290041 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Idaho Drinking Water Authority

Idaho'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 ID 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
2025 E. COLI MR 1 SDWIS / ID2290041 / 3014
2024 Revised Total Coliform Rule MCL 5 SDWIS / ID2290041 / 8000
2021 Chlorine MR 28 SDWIS / ID2290041 / 0999
2021 Surface Water Treatment Rule MR 19 SDWIS / ID2290041 / 0200
2021 Revised Total Coliform Rule MON 18 SDWIS / ID2290041 / 8000
2016 Nitrate MR 20 SDWIS / ID2290041 / 1040
2016 Coliform (TCR) MR 12 SDWIS / ID2290041 / 3100
2016 Total Haloacetic Acids (HAA5) MCL 8 SDWIS / ID2290041 / 2456
2016 Arsenic MR 7 SDWIS / ID2290041 / 1005
2016 Mercury MR 4 SDWIS / ID2290041 / 1035
2016 Nickel MR 4 SDWIS / ID2290041 / 1036
2016 Beryllium, Total MR 4 SDWIS / ID2290041 / 1075
2016 Thallium, Total MR 4 SDWIS / ID2290041 / 1085
2016 Selenium MR 4 SDWIS / ID2290041 / 1045
2016 Fluoride MR 4 SDWIS / ID2290041 / 1025

How Troy City Of Compares

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

Metric Troy City Of Idaho avg Federal benchmark
Total violations 448 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 30 10 Indicates a contaminant exceeded a federal MCL
PFAS detection None 66.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 850 870 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,005 regulated public water systems in Idaho.

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 Troy City Of water safe to drink? ▼
Troy City Of (PWS ID: ID2290041) has 448 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 850 people using Surface Water sources.
How many people does Troy City Of serve? ▼
Troy City Of serves 850 people in Troy, Idaho. It is a Local-owned system using Surface Water water sources with 411 service connections.
What type of violations does Troy City Of have? ▼
Troy City Of has 448 total violations: 30 health-based violations (MCL exceedances or treatment failures), 393 monitoring/reporting violations, and 10 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Troy City Of water? ▼
No PFAS testing data is available for Troy City Of under the EPA's UCMR5 monitoring program.
What water source does Troy City Of use? ▼
Troy City Of uses Surface Water 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.