Tap Water Quality Report
Tap water quality in Lakeville, Minnesota
Tap water in Lakeville, Minnesota receives a grade of C (75/100) from TapWaterSafety.org. It's served by Lakeville. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Radium, combined (-226 and -228) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in Lakeville's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Lakeville.
PFAS contamination
Severe concernPerfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 7.39 ppb, 123x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 17.1 ppb, 114x above the EWG health guideline of 0.15 ppb.
Radium, combined (-226 and -228) significantly above health guideline
Moderate concernRadium, combined (-226 and -228) detected at 3.96 pCi/L, 79x above the EWG health guideline of 0.05 pCi/L.
EPA compliance record
Official U.S. EPA records for Lakeville (system ID MN1190015) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for Lakeville
Filters matched to the specific contaminants in Lakeville's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for radium (NSF/ANSI 58)
$429-$750RO certified for radium 226/228 reduces it; ion-exchange water softeners also reduce radium.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in Lakeville's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
7.39 ppb | 0.06 | — | — | — | — | — | 123× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
17.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 114× over |
| Radium, combined (-226 and -228) Radiological |
3.96 pCi/L | 0.05 | 5.0 | — | — | — | — | 79× over |
| Bromodichloromethane Disinfection byproduct |
4.07 ppb | 0.06 | — | — | — | — | — | 68× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
6.13 ppb | 0.1 | 60.0 | 60 | — | — | — | 61× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.046 ppt | 0.001 | 10.0 | — | — | — | — | 46× over |
| Trichloroacetic acid Disinfection byproduct |
3.38 ppb | 0.1 | — | — | — | — | — | 34× over |
| Chloroform Disinfection byproduct |
11.6 ppb | 0.4 | — | — | — | — | — | 29× over |
| Dibromochloromethane Disinfection byproduct |
1.45 ppb | 0.1 | — | — | — | — | — | 15× over |
| Dichloroacetic acid Disinfection byproduct |
2.75 ppb | 0.2 | — | — | — | — | — | 14× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.062 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | Below guideline |
| Manganese Heavy metal |
1.02 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.91 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.163 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.035 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.703 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from Lakeville.