Transient Non-Community · PWSID IA4260401

Calkins Nature Center

Serves 27 peopleGroundwaterOwner: Local GovernmentAckley, Iowa
Nothing open right now.

On record since 2016: 6 violations. 3 over the limit · 3 missed or late tests. Most recent began 2025-08-01.

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

3Over the limit
0Treatment lapse
3Missed or late test
0Notice or report

More violations on record than 75% of active water systems in Iowa. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152016 · Missed or late test: 120202022 · Missed or late test: 12024 · Over the limit: 12025 · Over the limit: 22025 · Over the limit: 22025 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
50% over the limit · 350% missed or late test · 3

Across Iowa, 63% of violations are missed or late tests and 7% are water over a limit.

Every violation on record

  1. 2025-08-01NitrateMCL, Single Samplemeasured 12.50 MG/LPeriod ended · no return to compliance on file
  2. 2025-07-01NitrateMCL, Single Samplemeasured 15.02 MG/LPeriod ended · no return to compliance on file
  3. 2025-03-01Revised Total Coliform RuleMONPeriod ended · no return to compliance on file
  4. 2024-07-01NitrateMCL, Single Samplemeasured 11.87 MG/LPeriod ended · no return to compliance on file
  5. 2022-10-01NitrateMonitoring, RegularBack in compliance
  6. 2016-07-01Revised Total Coliform RuleMONBack in compliance

System details

Population served27
Service connections2
Water sourceGroundwater
System typeTransient Non-Community
OwnerLocal Government
StatusActive
CityAckley
EPA ZIP on file50601

Areas served

  • Iowa Falls, Hardin County

Reading this record

Calkins Nature Center is a transient non-community that draws from groundwater and serves about 27 people in Ackley, Iowa. 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.