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Non-Transient Non-Community Water System · PWS MT0005057

Elder Grove Middle School Bldg 6

Billings, Montana 59106 - drinking water served from surface water sources to 600 people, tracked in EPA SDWIS and UCMR5.

600
People served
26
EPA violations
18
Health-based
Untested
UCMR5 result

The verdict

EPA records 26 drinking-water violations at Elder Grove Middle School Bldg 6, 69% of them health-based - below the Montana per-system average.

26
Total EPA violations on record
69%
Health-based (MCL / treatment failure)
600
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Elder Grove Middle School Bldg 6

Elder Grove Middle School Bldg 6 is a state-owned non-transient non-community water system that delivers drinking water to 600 residents in Billings, Montana (Yellowstone County) through 1 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 18 (69%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 8 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Nitrate-Nitrite, recorded in 15 violations (MCL, 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 Montana, EPA tracks 2,263 public water systems serving 1,112,267 people, with 297,270 cumulative violations and 25,922 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 131.4 violations. Statewide, 28 of 45 UCMR5-tested systems have reported PFAS detections (62.2%).

Elder Grove Middle School Bldg 6's 26 violations sit below the Montana 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
600
Total Violations
26
Health-Based Violations
18
Water Source
Surface Water

System Details

System Type
Non-Transient Non-Community
Owner Type
State
Connections
1
County
Yellowstone
School/Daycare
Yes
MCL Violations
15
Monitoring Violations
8
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate-Nitrite MCL 15 2023
Lead and Copper Rule MR 5 2022
Nitrate-Nitrite MR 3 2021
Revised Total Coliform Rule TT 3 2020

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 Elder Grove Middle School Bldg 6.

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 MT0005057 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Montana Drinking Water Authority

Montana'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 MT 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
2023 Nitrate-Nitrite MCL 15 SDWIS / MT0005057 / 1038
2022 Lead and Copper Rule MR 5 SDWIS / MT0005057 / 5000
2021 Nitrate-Nitrite MR 3 SDWIS / MT0005057 / 1038
2020 Revised Total Coliform Rule TT 3 SDWIS / MT0005057 / 8000

How Elder Grove Middle School Bldg 6 Compares

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

Metric Elder Grove Middle School Bldg 6 Montana avg Federal benchmark
Total violations 26 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 18 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 62.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 600 492 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,263 regulated public water systems in Montana.

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 Elder Grove Middle School Bldg 6 water safe to drink? ▼
Elder Grove Middle School Bldg 6 (PWS ID: MT0005057) has 26 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 600 people using Surface Water sources.
How many people does Elder Grove Middle School Bldg 6 serve? ▼
Elder Grove Middle School Bldg 6 serves 600 people in Billings, Montana. It is a State-owned system using Surface Water water sources with 1 service connections.
What type of violations does Elder Grove Middle School Bldg 6 have? ▼
Elder Grove Middle School Bldg 6 has 26 total violations: 18 health-based violations (MCL exceedances or treatment failures), 8 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Elder Grove Middle School Bldg 6 water? ▼
No PFAS testing data is available for Elder Grove Middle School Bldg 6 under the EPA's UCMR5 monitoring program.
What water source does Elder Grove Middle School Bldg 6 use? ▼
Elder Grove Middle School Bldg 6 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.