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Non-Transient Non-Community Water System · PWS CA5304209

Junction City School

Junction City, California 96048 - drinking water served from surface water sources to 80 people, tracked in EPA SDWIS and UCMR5.

80
People served
18
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 18 drinking-water violations at Junction City School, 56% of them health-based - below the California per-system average.

18
Total EPA violations on record
56%
Health-based (MCL / treatment failure)
80
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Junction City School

Junction City School is a private-owned non-transient non-community water system that delivers drinking water to 80 residents in Junction City, California (Trinity County) through 1 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 18 total violations for this system , of which 10 (56%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 5 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 Interim Enhanced Surface Water Treatment Rule, recorded in 8 violations (TT, 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 California, EPA tracks 7,249 public water systems serving 42,404,883 people, with 153,308 cumulative violations and 63,983 health-based violations on record. About 89% of systems in the state carry at least one violation, and state-wide the average per system is 21.1 violations. Statewide, 231 of 694 UCMR5-tested systems have reported PFAS detections (33.3%).

Junction City School's 18 violations sit below the California 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
80
Total Violations
18
Health-Based Violations
10
Water Source
Surface Water

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Trinity
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
5
Treatment Tech Violations
10

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule TT 8 2025
Surface Water Treatment Rule TT 2 1993
Coliform (TCR) MR 2 1993
Revised Total Coliform Rule MON 2 2022
Interim Enhanced Surface Water Treatment Rule MR 1 2024

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 Junction City 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 CA5304209 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

California Drinking Water Authority

California State Water Resources Control Board, Division of Drinking Water is the primacy agency that licenses and inspects Junction City School under EPA-delegated authority.

Open CA regulator portal

Source: California State Water Resources Control Board, Division 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
2025 Interim Enhanced Surface Water Treatment Rule TT 8 SDWIS / CA5304209 / 0300
2024 Interim Enhanced Surface Water Treatment Rule MR 1 SDWIS / CA5304209 / 0300
2022 Revised Total Coliform Rule MON 2 SDWIS / CA5304209 / 8000
1993 Surface Water Treatment Rule TT 2 SDWIS / CA5304209 / 0200
1993 Coliform (TCR) MR 2 SDWIS / CA5304209 / 3100

How Junction City School Compares

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

Metric Junction City School California avg Federal benchmark
Total violations 18 21.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 8.8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 33.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 80 5,850 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,249 regulated public water systems in California.

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 Junction City School water safe to drink? ▼
Junction City School (PWS ID: CA5304209) has 18 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 80 people using Surface Water sources.
How many people does Junction City School serve? ▼
Junction City School serves 80 people in Junction City, California. It is a Private-owned system using Surface Water water sources with 1 service connections.
What type of violations does Junction City School have? ▼
Junction City School has 18 total violations: 10 health-based violations (MCL exceedances or treatment failures), 5 monitoring/reporting violations, and 10 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Junction City School water? ▼
No PFAS testing data is available for Junction City School under the EPA's UCMR5 monitoring program.
What water source does Junction City School use? ▼
Junction City School uses Surface Water 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.
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.