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Centreville, MD Tap Water Quality 2026

Water quality report for Centreville, MD — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Centreville's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Town Of Centreville PWSID: MD0170001 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 5.00 ppb, 33% of the action level and no violations are open. No PFAS was detected.

B

Centreville earns a B for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 5.00 ppb — 33% of the federal action level
PFAS tested, none detected
19 violations since 2015, 1 health-based
No violations currently open
Centreville's lead level vs. all Maryland community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 5.00 ppb — 33% of the federal action level
✓ Lower lead than 9% of Maryland utilities
Population Served
4727
~975 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
19 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
33% of EPA action level
5.00 ppb
Action level: 15 ppb
The 90th-percentile lead result is 5.00 ppb, 33% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Revised Total Coliform Rule MCL EXCEEDANCE — — 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2021 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2019 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2018 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2018 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2018 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2017 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2017 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

19 violations are on record since 2015, of which 1 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Town Of Centreville
PWSID MD0170001
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 4,727
Service connections 975
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Centreville tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 5.00 ppb, 33% of the action level.
Does Centreville water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Centreville? ▼
Town Of Centreville (PWSID MD0170001). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-08-29. No significant deficiencies were recorded.

What Should Centreville Residents Do?

1
Consider a filter certified for lead
Look for NSF/ANSI 53 certification for lead reduction.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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