55128
Oakdale, MN
Washington County · Minneapolis-St. Paul-Bloomington, MN-WI metro area
OAKDALE

Is Oakdale tap water safe to drink?

Some concern
Last tested: September 2025
Source: EPA UCMR5 utility monitoring plus EPA Water Quality Portal well sampling (mapped to nearest ZIP). Last tested September 2025.
Community:
  • Saint Paul, MN

The short answer for Oakdale

Oakdale tap water has 9 detected contaminants, currently below EPA limits (tested August 2024). Arsenic measured closest to the threshold. See the full compound-by-compound report.

The health risk for Oakdale

Arsenic was detected in local water tests, currently below EPA limits. Even below-limit detections can still be meaningful for sensitive households, so a targeted certified filter can add protection.
  • PFAS or other chemicals detected; no confirmed exceedances in multiple samples.
Arsenic concentration (µg/L) August 2024
0 µg/L 10 µg/L 20 µg/L
3.330 µg/L
Detected
µg/L
10 µg/L
EPA limit
guideline
33% of limit
Comparison
vs. guideline
EPA limit: 10 µg/L | Your water: 3.330 µg/L
Add a Layer of Protection for Oakdale Tap Water

Arsenic was detected below EPA limits. A certified filter can still add an extra layer of protection.

Water filter recommendation for Oakdale tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
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Most elevated compounds

No compounds above or close to EPA limits in available data.

View all tested compounds

804952 · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
Arsenic 3.330 µg/L 10 µg/L 33% of limit
Perfluorohexanesulfonic acid 2.400 ng/L 10 ng/L 24% of limit
Perfluorooctanoic acid 0.753 ng/L 4 ng/L 19% of limit
Perfluorobutanesulfonic acid 0.355 ng/L 3 ng/L 12% of limit
Perfluoroheptanoic acid 0.222 ng/L 3 ng/L 7% of limit
Perfluorohexanoic acid 1.320 ng/L 3000 ng/L 0.0% of limit
1,7-Dimethylxanthine 10.600 ng/L — —
4,4'-Isopropylidenediphenol 3.960 ng/L — —
Alkalinity, total 150.000 mg/L — —
Aluminum 42.000 µg/L — —
Ammonia-nitrogen 0.140 mg/L — —
Barium 38.500 µg/L — —
Benzenesulfonamide, 4-amino... 0.739 ng/L — —
Benzoylecgonine hydrate 0.193 ng/L — —
Bromide 0.038 mg/L — —
Caffeine 7.380 ng/L — —
Calcium 35.000 mg/L — —
Chloride 42.650 mg/L — —
Ciprofloxacin 28.500 ng/L — —
Cocaine 0.282 ng/L — —
Fluoxetine 0.537 ng/L — —
Iron 34.800 µg/L — —
Kjeldahl nitrogen 0.150 mg/L — —
Magnesium 23.100 mg/L — —
Manganese 16.200 µg/L — —
Metformin 0.435 ng/L — —
N,N-Diethyl-m-toluamide 6.670 ng/L — —
Nickel 2.010 µg/L — —
Ofloxacin 3.360 ng/L — —
Organic carbon 1.600 mg/L — —
Penicillin G 3.470 ng/L — —
Perfluorobutanesulfonate 0.808 ng/L — —
Perfluorobutanoate 47.000 ng/L — —
Perfluorohexanesulfonate 2.790 ng/L — —
Perfluorooctanesulfonamide 0.638 ng/L — —
Perfluorovaleric acid 1.410 ng/L — —
Phosphorus 0.046 mg/L — —
Potassium 1.040 mg/L — —
Sodium 10.500 mg/L — —
Strontium 139.000 µg/L — —
Sulfate 19.800 mg/L — —
Theophylline 9.230 ng/L — —

TREATMENT PLANT #1 · Tested: April 2025

Compound Measurement EPA Limit Comparison
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Well #10 Entry Point · Tested: April 2025

Compound Measurement EPA Limit Comparison
PFBA 0.066 µg/L 6 µg/L 1% of limit
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Well #3 Entry Point · Tested: April 2025

Compound Measurement EPA Limit Comparison
PFBA 0.105 µg/L 6 µg/L 2% of limit
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Well #7 Entry Point · Tested: Multiple dates

Compound Measurement EPA Limit Comparison
PFBA 1.270 µg/L 6 µg/L 21% of limit
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 55128

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Frequently Asked Questions about ZIP 55128 Tap Water

What's in ZIP 55128 tap water?

ZIP 55128 has 9 detected contaminants below EPA limits in this dataset. Arsenic measured closest to its guideline.

Will boiling ZIP 55128 tap water remove Arsenic?

Boiling tap water can kill many pathogens, but it does not remove most chemical contaminants tracked in EPA monitoring. Several dissolved contaminants can even concentrate as water evaporates. For the chemical contaminants reported in ZIP 55128, a certified filter is more reliable.

Do basic pitcher filters remove Arsenic?

Basic pitcher filters are typically rated for chlorine, taste, and odor (NSF/ANSI 42), not for the broader list of contaminants tracked in EPA monitoring. Match the certification (NSF/ANSI 42, 53, 58, or P473) to the specific compounds listed in this report before assuming a filter helps.

Who provides tap water in ZIP 55128?

Public records identify OAKDALE as a primary water system associated with ZIP 55128. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 55128 tap water last tested?

The most recent test date used in this report is September 2025. EnviroClarity last refreshed this page on 2026-05-05.

Where can I find the official water quality report for ZIP 55128?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact OAKDALE or visit their website for the latest official report covering ZIP 55128. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025) + EPA WQP (well monitoring near ZIP)
Guideline source EPA drinking water standard (PFDoA: 0,003 µg/L)
Last tested September 2025
Last page update 2026-05-05

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    Nearby ZIP reports

    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Filter Oakdale tap water → see certified options