Transient Non-Community Water System · PWS MI2003538
Mdot - Grass Lake, R818
Jackson, Michigan 49201 - drinking water served from groundwater sources to 2,000 people, tracked in EPA SDWIS and UCMR5.
- 2,000
- People served
- 9
- EPA violations
- 3
- Health-based
- Untested
- UCMR5 result
The verdict
EPA records 9 drinking-water violations at Mdot - Grass Lake, R818, 33% of them health-based - below the Michigan per-system average.
- 9
- Total EPA violations on record
- 33%
- Health-based (MCL / treatment failure)
- 2,000
- People served by this system
- N/A
- PFAS compounds detected (UCMR5)
Water Quality Snapshot: Mdot - Grass Lake, R818
Mdot - Grass Lake, R818 is a state-owned transient non-community water system that delivers drinking water to 2,000 residents in Jackson, Michigan (Jackson County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 9 total violations for this system , of which 3 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 6 monitoring and reporting violations are on file. The most recent violation on record dates to 2005.
The most frequently cited contaminant at this system is Coliform (TCR), 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. Statewide, 87 of 318 UCMR5-tested systems have reported PFAS detections (27.4%).
Mdot - Grass Lake, R818's 9 violations sit below 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.
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 2
- County
- Jackson
- School/Daycare
- No
- MCL Violations
- 3
- Monitoring Violations
- 6
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 6 | 2005 |
| Coliform (TCR) | MCL | 3 | 2005 |
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 Mdot - Grass Lake, R818.
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 MI2003538 on SDWISSource: EPA SDWIS Federal Reports Search
Michigan Drinking Water Authority
Michigan EGLE, Drinking Water and Environmental Health Division is the primacy agency that licenses and inspects Mdot - Grass Lake, R818 under EPA-delegated authority.
Open MI regulator portalSource: 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 |
|---|---|---|---|---|
| 2005 | Coliform (TCR) | MR | 6 | SDWIS / MI2003538 / 3100 |
| 2005 | Coliform (TCR) | MCL | 3 | SDWIS / MI2003538 / 3100 |
How Mdot - Grass Lake, R818 Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | Mdot - Grass Lake, R818 | Michigan avg | Federal benchmark |
|---|---|---|---|
| Total violations | 9 | 23.3 | SDWA compliance, any non-zero count is a recorded breach |
| Health-based violations | 3 | 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 | 2,000 | 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 Mdot - Grass Lake, R818 water safe to drink? ▼
How many people does Mdot - Grass Lake, R818 serve? ▼
What type of violations does Mdot - Grass Lake, R818 have? ▼
Has PFAS been detected in Mdot - Grass Lake, R818 water? ▼
What water source does Mdot - Grass Lake, R818 use? ▼
Where does this data come from? ▼
Read our methodology - how this data is sourced, computed, and verified.
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.