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Superior Townshipwater quality report, rewritten

Serves
6,830
Connections
2,632
Water source
Surface water bought from another system
Based in
Ypsilanti, MI
County
Washtenaw
Owner
Local government

ZIP codes served: 48198

PWSID MI00064902026 edition · EPA data

Read this first

Nothing in the federal data for this utility is above a health goal. That covers PFAS, lithium, lead and copper; it does not cover everything, so read what this report cannot tell you below.

1 health-based violation since 2016. Details are below.

What was found

Highlighted: above the health goal. Circled: above the legal limit in at least one sample. Every scale puts the legal line at its middle.

Also found, with no federal limit

EPA measured these PFAS to learn how often they occur. None has a legal limit or a health goal yet.

CompoundHighest sampleFound inCertification claim
PFPeA3.0 ppt1 of 8None covers it

Tested and not found

Below EPA’s minimum reporting level in every sample taken from March 10, 2025 to Dec. 9, 2025. Not found means not measured above that level, which is not the same as zero.

  • 11Cl-PF3OUdS
  • 4:2 FTS
  • 6:2 FTS
  • 8:2 FTS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • Lead
  • Lithium
  • NEtFOSAA
  • NFDHA
  • NMeFOSAA
  • PFBA
  • PFBS
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpA
  • PFHpS
  • PFHxA
  • PFHxS
  • PFMBA
  • PFMPA
  • PFNA
  • PFOA
  • PFOS
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Lead and Copper RuleWQP Entry Point/Tap Treatment Technique Non-ComplianceJan. 1, 2023 to June 30, 2023—Resolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record.

What this report cannot tell you

  • Levels of everything else. Federal bulk data carries results for PFAS, lithium, lead and copper, and violations for the rest. Nitrate, arsenic, disinfection byproducts and other levels are in Superior Township’s own annual report, which it must send you every year.
  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
  • Anything after the latest data. SDWIS data is from 2026 Q2; UCMR 5 samples are from March 10, 2025 to Dec. 9, 2025.

Other Michigan utilities

All Michigan utilities

Sources