Non-Transient Non-Community · PWSID NM3501029

Arroyos Del Norte Elementary School

Serves 100 peopleGroundwaterOwner: Local GovernmentTaos, New MexicoServes a school or daycare
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 2007: 15 violations. 3 treatment lapses · 5 missed or late tests · 7 notices or reports. Most recent began 2025-03-23.

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
3Treatment lapse1 open
5Missed or late test
7Notice or report2 open

More violations on record than 46% of active water systems in New Mexico. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052007 · Missed or late test: 120102015 · Missed or late test: 12015 · Notice or report: 120152016 · Missed or late test: 12016 · Notice or report: 12017 · Notice or report: 12018 · Notice or report: 12019 · Missed or late test: 12020 · Missed or late test: 12020 · Notice or report: 120202024 · Treatment lapse: 32024 · Treatment lapse: 32024 · Treatment lapse: 32024 · Notice or report: 12025 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
20% treatment lapse · 333% missed or late test · 547% notice or report · 7

Across New Mexico, 40% of violations are missed or late tests and 6% 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 4 results on file · action level 15 ppb

1.1 ppb
1 ppb
0.6 ppb
0 ppb

Open now (3)

  1. 2025-03-23Public NoticePN Violation for NPDWR ViolationOpen
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2025-03-23Public NoticePN Violation for NPDWR ViolationOpen
  2. 2024-11-05Groundwater Rule ×2Failure To Address DeficiencyBack in compliance
  3. 2024-10-17Lead service line inventoryRPTOpen
  4. 2024-10-17Lead service line inventoryTTOpen
  5. 2020-12-23Public NoticePN Violation for NPDWR ViolationBack in compliance
  6. 2020-01-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2019-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  8. 2018-04-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2017-02-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2016-12-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2016-09-01Revised Total Coliform RuleMONBack in compliance
  12. 2015-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  13. 2015-03-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2007-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served100
Service connections1
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerLocal Government
StatusActive
CityTaos
EPA ZIP on file87571

Areas served

  • Arroyo Seco, Taos County

Reading this record

Arroyos Del Norte Elementary School is a non-transient non-community that draws from groundwater and serves about 100 people in Taos, New Mexico. 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.