Transient Non-Community · PWSID AZ0402060

Adot San Simon Rest Area

Serves 2,500 peopleGroundwaterOwner: StatePhoenix, Arizona
Nothing open right now.

On record since 2013: 9 violations. 1 over the limit · 4 missed or late tests · 4 notices or reports. Most recent began 2023-02-01.

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

1Over the limit
0Treatment lapse
4Missed or late test
4Notice or report

More violations on record than 40% of active water systems in Arizona. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

200520102013 · Missed or late test: 12015 · Missed or late test: 120152018 · Missed or late test: 12019 · Notice or report: 120202021 · Over the limit: 12021 · Notice or report: 22021 · Notice or report: 22022 · Notice or report: 12023 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
11% over the limit · 144% missed or late test · 444% notice or report · 4

Across Arizona, 65% of violations are missed or late tests and 5% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Nitrate2021-01-01 · Nitrate: measured 11.06 MG/L vs limit 10.00 MG/L (1.1×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

Every violation on record

  1. 2023-02-01Revised Total Coliform RuleMONBack in compliance
  2. 2022-10-01Revised Total Coliform RuleRPTBack in compliance
  3. 2021-03-01Revised Total Coliform RuleRPTBack in compliance
  4. 2021-02-01Revised Total Coliform RuleRPTBack in compliance
  5. 2021-01-01NitrateMCL, Single Samplemeasured 11.06 MG/L · limit 10.00 MG/LBack in compliance
  6. 2019-10-01Revised Total Coliform RuleRPTBack in compliance
  7. 2018-01-01NitrateMonitoring, RegularBack in compliance
  8. 2015-01-01NitrateMonitoring, RegularBack in compliance
  9. 2013-01-01NitrateMonitoring, RegularBack in compliance

System details

Population served2,500
Service connections3
Water sourceGroundwater
System typeTransient Non-Community
OwnerState
StatusActive
CityPhoenix
EPA ZIP on file85007-3217

Areas served

  • San Simon, Cochise County

Reading this record

Adot San Simon Rest Area is a transient non-community that draws from groundwater and serves about 2,500 people in Phoenix, Arizona. 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.