Community Water System · PWSID LA1081010

Hickory Grove Water System

Serves 570 peopleSurface Water PurchasedOwner: PrivateCoushatta, Louisiana
Nothing open right now.

On record since 2010: 16 violations. 2 over the limit · 7 treatment lapses · 2 missed or late tests · 5 notices or reports. Most recent began 2025-07-01.

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

2Over the limit
7Treatment lapse
2Missed or late test
5Notice or report

More violations on record than 73% of active water systems in Louisiana. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052010 · Missed or late test: 120102011 · Notice or report: 12012 · Treatment lapse: 12014 · Notice or report: 120152017 · Missed or late test: 12017 · Notice or report: 12018 · Treatment lapse: 62018 · Treatment lapse: 62018 · Treatment lapse: 62018 · Treatment lapse: 62018 · Treatment lapse: 62018 · Treatment lapse: 62019 · Notice or report: 120202024 · Notice or report: 12025 · Over the limit: 22025 · Over the limit: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
13% over the limit · 244% treatment lapse · 713% missed or late test · 231% notice or report · 5

Across Louisiana, 31% of violations are missed or late tests and 25% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)2025-07-01 · Trihalomethanes (TTHM): measured 0.1260 MG/L vs limit 0.0800 MG/L (1.6×)2025-04-01 · Trihalomethanes (TTHM): measured 0.1050 MG/L vs limit 0.0800 MG/L (1.3×)
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 3 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1260 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  2. 2025-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1050 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  4. 2019-03-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  5. 2018-09-02Groundwater Rule ×6Failure To Address DeficiencyBack in compliance
  6. 2017-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  7. 2017-03-04Lead and Copper RuleLead Consumer NoticeBack in compliance
  8. 2014-08-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2012-08-02Groundwater RuleFailure To Address DeficiencyBack in compliance
  10. 2011-04-17Public NoticePN Violation for NPDWR ViolationBack in compliance
  11. 2010-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served570
Service connections190
Water sourceSurface Water Purchased
System typeCommunity Water System
OwnerPrivate
StatusActive
CityCoushatta
EPA ZIP on file71019

Areas served

  • Red River Parish

Reading this record

Hickory Grove Water System is a community water system that draws from surface water purchased and serves about 570 people in Coushatta, Louisiana. 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.