Community Water System · PWSID MD0020013

Gibson Island

Serves 275 peopleGroundwaterOwner: Local GovernmentMillersville, Maryland
Nothing open right now.

On record since 2008: 12 violations. 11 missed or late tests · 1 notice or report. Most recent began 2022-10-01.

None of them is a measurement of contaminated water.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

0Over the limit
0Treatment lapse
11Missed or late test
1Notice or report

More violations on record than 93% of active water systems in Maryland. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052008 · Notice or report: 1201020152020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 92020 · Missed or late test: 920202022 · Missed or late test: 22022 · Missed or late test: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
92% missed or late test · 118% notice or report · 1

Across Maryland, 72% of violations are missed or late tests and 5% are water over a limit.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 2 results on file · action level 15 ppb

0 ppb
-5 ppb

Every violation on record

  1. 2022-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  2. 2022-01-01NitrateMonitoring, RegularBack in compliance
  3. 2020-01-01MercuryMonitoring, RegularBack in compliance
  4. 2020-01-01ChromiumMonitoring, RegularBack in compliance
  5. 2020-01-01CadmiumMonitoring, RegularBack in compliance
  6. 2020-01-01BariumMonitoring, RegularBack in compliance
  7. 2020-01-01SeleniumMonitoring, RegularBack in compliance
  8. 2020-01-01Thallium, TotalMonitoring, RegularBack in compliance
  9. 2020-01-01Beryllium, TotalMonitoring, RegularBack in compliance
  10. 2020-01-01Antimony, TotalMonitoring, RegularBack in compliance
  11. 2020-01-01NickelMonitoring, RegularBack in compliance
  12. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served275
Service connections197
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityMillersville
EPA ZIP on file21108

Areas served

  • Anne Arundel County

Reading this record

Gibson Island is a community water system that draws from groundwater and serves about 275 people in Millersville, Maryland. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.