Community Water System · PWSID PR0666036

Sector Los Diaz

Serves 197 peopleGroundwaterOwner: PrivateSan Lorenzo, 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 2012: 17 violations. 7 over the limit · 1 treatment lapse · 8 missed or late tests · 1 notice or report. 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
1Treatment lapse1 open
8Missed or late test1 open
1Notice or report1 open

More violations on record than 40% 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

200520102012 · Over the limit: 12013 · Over the limit: 22013 · Over the limit: 22013 · Missed or late test: 12014 · Over the limit: 32014 · Over the limit: 32014 · Over the limit: 32014 · Missed or late test: 22014 · Missed or late test: 22015 · Over the limit: 120152019 · Missed or late test: 22019 · Missed or late test: 22020 · Missed or late test: 120202022 · Missed or late test: 12023 · Missed or late test: 12024 · 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.
41% over the limit · 76% treatment lapse · 147% missed or late test · 86% notice or report · 1

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

1 ppb

Open now (3)

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2023-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2023-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  4. 2022-07-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  5. 2020-01-01Revised Total Coliform RuleMONBack in compliance
  6. 2019-07-01Revised Total Coliform RuleMONBack in compliance
  7. 2019-04-01Revised Total Coliform RuleMONBack in compliance
  8. 2015-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  9. 2014-09-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  10. 2014-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  11. 2014-03-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  12. 2014-02-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  13. 2014-01-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  14. 2013-11-01Coliform (TCR)MCL, Acute (TCR)Back in compliance
  15. 2013-07-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  16. 2013-06-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  17. 2012-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance

System details

Population served197
Service connections74
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CitySan Lorenzo
EPA ZIP on file00754

Areas served

  • San Lorenzo, San Lorenzo Municipio County

Reading this record

Sector Los Diaz is a community water system that draws from groundwater and serves about 197 people in San Lorenzo, 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.