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GRAYLING HIGH SCHOOL

PWS ID: MI2006420 · GRAYLING, Michigan 49738

GRAYLING HIGH SCHOOL serves 530 people in GRAYLING, Michigan using Groundwater water sources. It has 127 recorded EPA violations, including 4 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: GRAYLING HIGH SCHOOL

GRAYLING HIGH SCHOOL is a private-owned non-transient non-community water system that delivers drinking water to 530 residents in GRAYLING, Michigan (Crawford County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 127 total violations for this system , of which 4 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 121 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 Lead and Copper Rule, recorded in 6 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. GRAYLING HIGH SCHOOL's 127 violations sit above the Michigan average. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%). 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
530
Total Violations
127
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Private
Connections
1
County
Crawford
School/Daycare
Yes
MCL Violations
4
Monitoring Violations
121
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 6 2018
Nitrate MR 4 2004
Coliform (TCR) MR 4 2004
Coliform (TCR) MCL 4 2006
Arsenic MR 4 2020
Revised Total Coliform Rule MON 3 2025
Barium MR 2 2002
Cadmium MR 2 2002
Mercury MR 2 2002
Selenium MR 2 2002
Beryllium, Total MR 2 2002
Thallium, Total MR 2 2002
BHC-GAMMA MR 2 1999
Methoxychlor MR 2 1999
Toxaphene MR 2 1999
Simazine MR 2 1999
Dinoseb MR 2 1999
Hexachlorocyclopentadiene MR 2 1999
Atrazine MR 2 1999
LASSO MR 2 1999
Heptachlor epoxide MR 2 1999
2,4,5-TP MR 2 1999
HEXACHLOROBENZENE MR 2 1999
Pentachlorophenol MR 2 1999
1,2,4-Trichlorobenzene MR 2 1999
cis-1,2-Dichloroethylene MR 2 1999
DICHLOROMETHANE MR 2 1999
o-Dichlorobenzene MR 2 1999
p-Dichlorobenzene MR 2 1999
Vinyl chloride MR 2 1999

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 GRAYLING HIGH 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 MI2006420 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 GRAYLING HIGH 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
2025 Revised Total Coliform Rule MON 3 SDWIS / MI2006420 / 8000
2020 Arsenic MR 4 SDWIS / MI2006420 / 1005
2018 Lead and Copper Rule MR 6 SDWIS / MI2006420 / 5000
2006 Coliform (TCR) MCL 4 SDWIS / MI2006420 / 3100
2004 Nitrate MR 4 SDWIS / MI2006420 / 1040
2004 Coliform (TCR) MR 4 SDWIS / MI2006420 / 3100
2002 Barium MR 2 SDWIS / MI2006420 / 1010
2002 Cadmium MR 2 SDWIS / MI2006420 / 1015
2002 Mercury MR 2 SDWIS / MI2006420 / 1035
2002 Selenium MR 2 SDWIS / MI2006420 / 1045
2002 Beryllium, Total MR 2 SDWIS / MI2006420 / 1075
2002 Thallium, Total MR 2 SDWIS / MI2006420 / 1085
2002 CYANIDE MR 2 SDWIS / MI2006420 / 1024
2002 Chromium MR 2 SDWIS / MI2006420 / 1020
2002 Antimony, Total MR 2 SDWIS / MI2006420 / 1074

How GRAYLING HIGH SCHOOL Compares

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

Metric GRAYLING HIGH SCHOOL Michigan avg Federal benchmark
Total violations 127 23.3 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 4 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 530 830 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is GRAYLING HIGH SCHOOL water safe to drink? ▼
GRAYLING HIGH SCHOOL (PWS ID: MI2006420) has 127 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 530 people using Groundwater sources.
How many people does GRAYLING HIGH SCHOOL serve? ▼
GRAYLING HIGH SCHOOL serves 530 people in GRAYLING, Michigan. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does GRAYLING HIGH SCHOOL have? ▼
GRAYLING HIGH SCHOOL has 127 total violations: 4 health-based violations (MCL exceedances or treatment failures), 121 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in GRAYLING HIGH SCHOOL water? ▼
No PFAS testing data is available for GRAYLING HIGH SCHOOL under the EPA's UCMR5 monitoring program.
What water source does GRAYLING HIGH SCHOOL use? ▼
GRAYLING HIGH 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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