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Non-Transient Non-Community Water System · PWS MI2005413

Sonoma Elementary School

Battle Creek, Michigan 49014 - drinking water served from groundwater sources to 300 people, tracked in EPA SDWIS and UCMR5.

300
People served
62
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 62 drinking-water violations at Sonoma Elementary School - above the Michigan per-system average.

62
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
300
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sonoma Elementary School

Sonoma Elementary School is a private-owned non-transient non-community water system that delivers drinking water to 300 residents in Battle Creek, Michigan (Calhoun County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 62 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 62 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 13 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 Michigan, EPA tracks 10,959 public water systems serving 9,098,093 people, with 255,201 cumulative violations and 31,467 health-based violations on record. About 86% of systems in the state carry at least one violation, and state-wide the average per system is 23.3 violations. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%).

Sonoma Elementary School's 62 violations sit above the Michigan 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
300
Total Violations
62
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Calhoun
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
62
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 13 2016
Coliform (TCR) MR 10 1996
Revised Total Coliform Rule MON 6 2018
Arsenic MR 4 2014
Barium MR 3 2014
Nickel MR 3 2014
Beryllium, Total MR 3 2014
Thallium, Total MR 3 2014
Selenium MR 3 2014
Antimony, Total MR 3 2014
Mercury MR 3 2014
Chromium MR 3 2014
Cadmium MR 3 2014
Nitrate MR 2 1996

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 Sonoma Elementary 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 MI2005413 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Michigan Drinking Water Authority

Michigan EGLE, Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects Sonoma Elementary School under EPA-delegated authority.

Open MI regulator portal

Source: Michigan EGLE, Drinking Water and Environmental Health Division

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
2018 Revised Total Coliform Rule MON 6 SDWIS / MI2005413 / 8000
2016 Lead and Copper Rule MR 13 SDWIS / MI2005413 / 5000
2014 Arsenic MR 4 SDWIS / MI2005413 / 1005
2014 Barium MR 3 SDWIS / MI2005413 / 1010
2014 Nickel MR 3 SDWIS / MI2005413 / 1036
2014 Beryllium, Total MR 3 SDWIS / MI2005413 / 1075
2014 Thallium, Total MR 3 SDWIS / MI2005413 / 1085
2014 Selenium MR 3 SDWIS / MI2005413 / 1045
2014 Antimony, Total MR 3 SDWIS / MI2005413 / 1074
2014 Mercury MR 3 SDWIS / MI2005413 / 1035
2014 Chromium MR 3 SDWIS / MI2005413 / 1020
2014 Cadmium MR 3 SDWIS / MI2005413 / 1015
1996 Coliform (TCR) MR 10 SDWIS / MI2005413 / 3100
1996 Nitrate MR 2 SDWIS / MI2005413 / 1040

How Sonoma Elementary School Compares

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

Metric Sonoma Elementary School Michigan avg Federal benchmark
Total violations 62 23.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 2.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 27.4% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 300 830 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 10,959 regulated public water systems in Michigan.

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 Sonoma Elementary School water safe to drink? ▼
Sonoma Elementary School (PWS ID: MI2005413) has 62 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 300 people using Groundwater sources.
How many people does Sonoma Elementary School serve? ▼
Sonoma Elementary School serves 300 people in Battle Creek, Michigan. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Sonoma Elementary School have? ▼
Sonoma Elementary School has 62 total violations: 0 health-based violations (MCL exceedances or treatment failures), 62 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sonoma Elementary School water? ▼
No PFAS testing data is available for Sonoma Elementary School under the EPA's UCMR5 monitoring program.
What water source does Sonoma Elementary School use? ▼
Sonoma Elementary 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.
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.