Flint’s drinking water comes from City of Flint (EPA system MI0002310), which buys treated surface water from a neighbouring wholesale system and distributes it locally for about 81,252 people. This page translates that system’s official EPA record — lead and copper results, violation history, and what the data does and does not say — into plain English.
This page is built entirely from the U.S. EPA’s Safe Drinking Water Information System (SDWIS), the same records state regulators use. We did not test Flint’s water, and system-level data describes the utility’s water as a whole — not what comes out of one specific home’s tap. Where the record is silent, we say so rather than guess.
Key takeaways
- City of Flint supplies Flint (Purchased surface water); it serves about 81,252 people across its service area.
- City of Flint’s most recent reported 90th-percentile lead result is 3 ppb, below the EPA action level of 15 ppb.
- 1 health-based violation in the last 10 years — details below, with dates and current status.
- EPA does not track hardness. If you’re shopping for a softener, test first and size from a real grains-per-gallon number.
The water system serving Flint
City of Flint is the community water system the EPA associates with Flint, Michigan. It reports a population served of about 81,252. Its EPA source code is a purchased one: the system buys already-treated water from a neighbouring supplier rather than treating its own, which is common for suburbs and townships.
| System | EPA ID | People served | Source water | Role |
|---|---|---|---|---|
| City of Flint | MI0002310 | 81,252 | Purchased surface water | Main system |
Not sure which system serves your address? Run your ZIP code through our What’s In My Water? lookup — it resolves the systems EPA lists for your ZIP and shows the same records in full.
Lead and copper
Lead: City of Flint’s most recent reported 90th-percentile lead result is 3 ppb, below the EPA action level of 15 ppb.
Read those numbers carefully: a 90th percentile is a system-wide statistic from a sample of homes, not a test of your tap. Lead in drinking water comes mostly from a home’s own plumbing — service lines, solder and fixtures — so two houses on the same street can test very differently. Homes built before 1986 carry the highest risk, whatever the system average says.
Violation history — the last 10 years
EPA records show 1 health-based violation for City of Flint in the last 10 years. Health-based means the serious kind — here is what it was:
- a regulated contaminant (EPA code 5200) — a required treatment technique step was not followed. Began October 2024; returned to compliance March 2025.
The recent paperwork record is clean too: no monitoring or reporting items in the last 5 years.
What this means for your home
System data sets the background; your home’s plumbing writes the foreground. In practice:
- Lead is a plumbing question, not a system alarm, here. The system’s own result is low, so the remaining risk sits in your home’s pipes and fixtures. A filter certified to NSF/ANSI 53 for lead is cheap insurance for older homes; our water filter guides explain the certifications without the marketing.
- Taste and smell: surface-water systems disinfect with chlorine or chloramine, which is most of what people taste. A basic carbon filter (NSF/ANSI 42) handles it; our chloramine vs chlorine explainer helps you tell which one your water has.
- Hardness is not in this record — by design. The EPA doesn’t track it, so nobody can honestly tell you your grains-per-gallon from this page. Scale on fixtures and shower doors is a hint, not a measurement. Test (strips are a start; a lab test is better — see how to test your water at home), then size any softener with our softener sizing calculator and the softener hub.
- On a private well outside the city system instead? Nothing on this page applies to your water — start with our Michigan well water guide for testing and treatment that fits the state.
Water quality in nearby cities
Westland, MI · Troy, MI · Rochester Hills, MI · Waterford, MI
This guide is one of our per-city water reports — see the full list on the Water Quality hub, alongside our contaminant explainers and testing guides.
Frequently asked questions
Is Flint water safe to drink?
The honest answer is: largely yes today, with real entries on its record. City of Flint has 1 health-based violation in the last 10 years (detailed in the violation section above); all of them now show as returned to compliance. A returned-to-compliance violation is history, not a current failure — and for lead, {lead_clause}. EPA data describes the system as a whole, not your tap; lead usually comes from a home’s own plumbing, so a certified home test is the only way to know your exact water.
Where does Flint get its drinking water?
City of Flint is the community water system the EPA associates with Flint. It buys treated surface water from a neighbouring wholesale system and distributes it locally and serves about 81,252 people across its service area (EPA system ID MI0002310).
What is the lead level in Flint’s water?
City of Flint’s most recent reported 90th-percentile lead result is 3 ppb, below the EPA action level of 15 ppb. That figure is a system statistic from sampled homes, not a test of your tap — your own plumbing decides your exposure, and a certified home test is the only way to know it.
Has Flint’s water system had violations?
Yes — 1 health-based violation in the last 10 years, listed with dates and status in the violation section above. All of them show as returned to compliance in EPA’s record.
Do I need a water filter in Flint?
Base it on the record above, not on fear. The violations on this system’s history point at the contaminants worth filtering for; for everyday taste, a carbon filter does the job. Whatever you consider, match its NSF/ANSI certification to the specific job — and test your hardness before anyone sells you a softener.
Source: U.S. EPA SDWIS via Envirofacts, retrieved November 12, 2026. System-level data describes the utility’s water, not any individual tap. If your water bill names a different system, that system’s record is the one that applies to you.