Community Water System · PWSID PR0422084

Coamo Arriba

Serves 340 peopleGroundwaterOwner: PrivateCoamo, Puerto Rico
1 open treatment violation.

Open for: Lead service line inventory. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 1992: 28 violations. 7 over the limit · 4 treatment lapses · 15 missed or late tests · 2 notices or reports. Most recent began 2024-10-17.

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

7Over the limit
4Treatment lapse1 open
15Missed or late test
2Notice or report2 open

More violations on record than 51% of active water systems in Puerto Rico. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1992 · Treatment lapse: 11995200020052007 · Treatment lapse: 12010 · Over the limit: 120102011 · Over the limit: 12013 · Over the limit: 12014 · Over the limit: 22014 · Over the limit: 22015 · Over the limit: 120152016 · Over the limit: 12016 · Treatment lapse: 12016 · Missed or late test: 12016 · Notice or report: 12019 · Missed or late test: 22019 · Missed or late test: 22020 · Missed or late test: 120202021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52021 · Missed or late test: 52022 · Missed or late test: 42022 · Missed or late test: 42022 · Missed or late test: 42022 · Missed or late test: 42023 · Missed or late test: 22023 · Missed or late test: 22024 · Treatment lapse: 12024 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
25% over the limit · 714% treatment lapse · 454% missed or late test · 157% notice or report · 2

Across Puerto Rico, 83% of violations are missed or late tests and 9% 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 1 result on file · action level 15 ppb

3 ppb

Open now (3)

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2016-05-01Public NoticePN Violation for NPDWR ViolationOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2023-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2023-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  5. 2022-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  6. 2022-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  7. 2022-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  8. 2022-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  9. 2021-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  10. 2021-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  11. 2021-04-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  12. 2021-02-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  13. 2021-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  14. 2020-01-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  15. 2019-10-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  16. 2019-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  17. 2016-05-01Public NoticePN Violation for NPDWR ViolationOpen
  18. 2016-05-01Revised Total Coliform RuleTTBack in compliance
  19. 2016-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Period ended · no return to compliance on file
  20. 2016-02-01Coliform (TCR)MCL, Monthly (TCR)Period ended · no return to compliance on file
  21. 2015-07-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  22. 2014-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  23. 2014-02-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  24. 2013-04-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  25. 2011-04-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
Show the other 3 entries
  1. 2010-12-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  2. 2007-01-01Surface water treatment (SWTR)Failure to Filter (SWTR)Back in compliance
  3. 1992-01-01Surface water treatment (SWTR)Failure to Filter (SWTR)Back in compliance

System details

Population served340
Service connections127
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityCoamo
EPA ZIP on file00769

Areas served

  • Coamo, Coamo Municipio County

Reading this record

Coamo Arriba is a community water system that draws from groundwater and serves about 340 people in Coamo, Puerto Rico. 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.