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Amboywater quality report, rewritten

Serves
535
Connections
255
Water source
Groundwater
Based in
Amboy, MN
County
Blue Earth
Owner
Local government

ZIP codes served: 56010

PWSID MN10700012026 edition · EPA data

Read this first

  • Copper The 90th-percentile result was 2.0 ppm, above the 1.3 ppm action level.
  • Lithium was found in two of 2 samples, highest 35 ppb. Above EPA’s health reference level of 10 ppb, a screening level rather than an enforceable limit.
  • Lead The 90th-percentile result was 6.0 ppb, below the 15 ppb action level. EPA’s health goal for lead is zero.

10 health-based violations since 2016. Details are below.

What handles it

What was found

Highlighted: above the health goal. Circled: above the legal limit in at least one sample. Every scale puts the legal line at its middle.

Copper

Comes from pipes, often your own

2.0ppm

90th percentile, 2025

The 90th-percentile result was 2.0 ppm, above the 1.3 ppm action level.

What handles it

EPA SDWIS, lead and copper monitoring periods ending 2025. The pointer marks the latest period; each blue tick is an earlier one.

Lithium

Comes from the source

35ppb

Highest of 2 samples; found in two

Above EPA’s health reference level of 10 ppb, a screening level rather than an enforceable limit.

What handles it

No certification claim covers this compound yet.

EPA UCMR 5, samples taken from April 11, 2023 to Oct. 11, 2023. Each blue tick is one sample where it was found.

Lead

Comes from pipes, often your own

6.0ppb

90th percentile, 2026

The 90th-percentile result was 6.0 ppb, below the 15 ppb action level. EPA’s health goal for lead is zero.

What handles it

EPA SDWIS, lead and copper monitoring periods ending 2005 to 2026. The pointer marks the latest period; each blue tick is an earlier one.

Tested and not found

Below EPA’s minimum reporting level in every sample taken from April 11, 2023 to Oct. 11, 2023. Not found means not measured above that level, which is not the same as zero.

  • 11Cl-PF3OUdS
  • 4:2 FTS
  • 6:2 FTS
  • 8:2 FTS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • NEtFOSAA
  • NFDHA
  • NMeFOSAA
  • PFBA
  • PFBS
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpA
  • PFHpS
  • PFHxA
  • PFHxS
  • PFMBA
  • PFMPA
  • PFNA
  • PFOA
  • PFOS
  • PFPeA
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA

Violations since 2016

Contaminant or ruleTypePeriodMeasuredStatus
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJuly 1, 2024 to Sept. 30, 20242.0 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageApril 1, 2024 to June 30, 20244.1 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJan. 1, 2024 to March 31, 20245.1 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageOct. 1, 2023 to Dec. 31, 20238.0 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJuly 1, 2023 to Sept. 30, 20238.3 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageApril 1, 2023 to June 30, 20234.3 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJan. 1, 2023 to March 31, 20236.0 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageOct. 1, 2022 to Dec. 31, 20226.0 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJuly 1, 2022 to Sept. 30, 20225.3 PCI/LArchived
Combined Radium (-226 and -228)Maximum Contaminant Level Violation, AverageJan. 1, 2022 to March 31, 20225.6 PCI/LResolved
Health-based violations only. Resolved and archived mean the utility returned to compliance or the state closed the record. 2 monitoring or reporting violations not shown.

What handles it

A certification covers specific claims, not a whole standard. Look for these claims on the certifier’s listing, not the box. Wording varies a little: NSF writes “Lead Reduction,” WQA just “Lead.”

  • NSF/ANSI 53

    Claims: Copper Reduction, Lead Reduction

    For: Copper, Lead

  • NSF/ANSI 58

    Claims: Copper Reduction, Lead Reduction

    For: Copper, Lead

At the tap, or for the whole house?

Lead and copper usually come from pipes and fixtures inside or near your home. A whole-house system sits where water enters, so it cannot catch what your own plumbing adds after it. For those, the filter that counts is the one at the tap. How whole-house systems compare.

Compare five-year costs

Filters with those claims on a certifier’s listing

TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money

What this report cannot tell you

  • Levels of everything else. Federal bulk data carries results for PFAS, lithium, lead and copper, and violations for the rest. Nitrate, arsenic, disinfection byproducts and other levels are in Amboy’s own annual report, which it must send you every year.
  • Your own plumbing. Lead results are the 90th percentile across homes the utility samples. Your home’s service line, solder and fixtures decide yours. A certified lab test is the only way to know.
  • Anything after the latest data. SDWIS data is from 2026 Q2; UCMR 5 samples are from April 11, 2023 to Oct. 11, 2023.

Other Minnesota utilities

All Minnesota utilities

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