Community Water System · PWSID LA1103122

Magnolia-Rigolets Estates

Serves 273 peopleGroundwaterOwner: PrivateDes Peres, Missouri
Nothing open right now.

On record since 2016: 11 violations. 10 over the limit · 1 treatment lapse. Most recent began 2021-07-01.

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

10Over the limit
1Treatment lapse
0Missed or late test
0Notice or report

More violations on record than 76% of active water systems in Missouri. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152016 · Treatment lapse: 12019 · Over the limit: 12020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 420202021 · Over the limit: 52021 · Over the limit: 52021 · Over the limit: 52021 · Over the limit: 52021 · Over the limit: 52025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
91% over the limit · 109% treatment lapse · 1

Across Missouri, 54% of violations are missed or late tests and 8% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Total Haloacetic Acids (HAA5)Trihalomethanes (TTHM)2021-07-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2021-04-01 · Total Haloacetic Acids (HAA5): measured 0.0710 MG/L vs limit 0.0600 MG/L (1.2×)2021-04-01 · Trihalomethanes (TTHM): measured 0.0820 MG/L vs limit 0.0800 MG/L (1.0×)2021-01-01 · Trihalomethanes (TTHM): measured 0.0850 MG/L vs limit 0.0800 MG/L (1.1×)2021-01-01 · Total Haloacetic Acids (HAA5): measured 0.0670 MG/L vs limit 0.0600 MG/L (1.1×)2020-10-01 · Trihalomethanes (TTHM): measured 0.0910 MG/L vs limit 0.0800 MG/L (1.1×)2020-10-01 · Total Haloacetic Acids (HAA5): measured 0.0690 MG/L vs limit 0.0600 MG/L (1.2×)2020-07-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2020-07-01 · Trihalomethanes (TTHM): measured 0.0880 MG/L vs limit 0.0800 MG/L (1.1×)2019-04-01 · Total Haloacetic Acids (HAA5): measured 0.0620 MG/L vs limit 0.0600 MG/L (1.0×)
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.

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

4 ppb
3 ppb
2 ppb
0 ppb

Every violation on record

  1. 2021-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LBack in compliance
  2. 2021-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0710 MG/L · limit 0.0600 MG/LBack in compliance
  3. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0820 MG/L · limit 0.0800 MG/LBack in compliance
  4. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0850 MG/L · limit 0.0800 MG/LBack in compliance
  5. 2021-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0670 MG/L · limit 0.0600 MG/LBack in compliance
  6. 2020-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0910 MG/L · limit 0.0800 MG/LBack in compliance
  7. 2020-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0690 MG/L · limit 0.0600 MG/LBack in compliance
  8. 2020-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LBack in compliance
  9. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0880 MG/L · limit 0.0800 MG/LBack in compliance
  10. 2019-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0620 MG/L · limit 0.0600 MG/LBack in compliance
  11. 2016-12-07Groundwater RuleFailure To Address DeficiencyBack in compliance

System details

Population served273
Service connections91
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityDes Peres
EPA ZIP on file63131

Areas served

  • St. Tammany Parish

Reading this record

Magnolia-Rigolets Estates is a community water system that draws from groundwater and serves about 273 people in Des Peres, Missouri. 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.