The 8 Most Common Water Issues in East Metro Homes

The East Metro Twin Cities sits on one of the most documented water quality issue zones in the United States. Per Minnesota Department of Health data, PFAS contamination spans more than 150 square miles and affects over 140,000 Minnesotans, primarily in Washington County. On top of that, every East Metro home faces 13 to 22 grain-per-gallon hardness. Most East Metro homes need both certified filtration and a properly sized water softener.

1. PFAS contamination

The defining East Metro water quality issue. PFAS (per- and polyfluoroalkyl substances) are synthetic chemicals tied to historical 3M industrial discharge dating to the 1970s. The contamination zone covers Cottage Grove, Oakdale, Lake Elmo, Woodbury, Hugo, Hastings, Mahtomedi, White Bear Lake, New Brighton, Bayport, Lakeland, St. Paul Park, Newport, and Afton.

Fix: Certified whole-home PFAS filtration (NSF/ANSI 53 or 58 PFAS-rated). See our PFAS filtration page.

2. Very hard water

The Twin Cities average 13 to 22 grains per gallon. well into the Very Hard to Extremely Hard tier per Water Quality Association classification. Untreated hard water damages plumbing, water heaters, dishwashers, washing machines, and fixtures every day.

Fix: Properly sized water softener with metered Fleck or Clack valve, programmed 2-3 gpg above your tested hardness.

3. Iron in well water

Common in rural Washington County (Hugo and surrounding areas), most of Anoka County (Coon Rapids, Andover, Ham Lake, Lino Lakes), and Western Wisconsin wells. Causes orange staining on fixtures, laundry, and tubs. Damages water softener resin if not pre-filtered.

Fix: Specialty iron filter installed before the softener. Type depends on whether iron is ferrous (dissolved) or ferric (rust).

4. Sulfur “rotten egg” smell

Two completely different sources requiring different treatment. Hydrogen sulfide gas from the aquifer (smell from both hot and cold taps, constant) or sulfate-reducing bacteria in the water heater (smell often from hot water only).

Fix: Aeration or oxidation for H2S gas. Anode rod replacement for SRB. We diagnose on-site.

5. Aging in-home plumbing

Many East Metro and inner-ring suburbs have homes built before 1960 with galvanized supply lines. These corrode from the inside, causing low pressure, rust-colored water, and pinhole leaks.

Fix: Repipe in copper or PEX. Sometimes spot repair for isolated sections.

6. Bad-tasting drinking water

Could be chlorine residual from municipal treatment, dissolved metals from aging plumbing, sulfur from a softener anode rod, or trace contaminants. Under-sink RO removes virtually all of these for drinking and cooking water.

Fix: Under-sink RO system. Cost-effective and highly effective for taste/odor at the tap.

7. Low water pressure

Causes range from municipal supply issue to mineral buildup narrowing pipes to failed pressure reducing valve. Diagnosis matters. buying a pump for a $50 valve problem is a waste.

Fix: Pressure test at main and downstream of any softener/filter. Replace pressure reducing valve or repipe affected section.

8. Wells specifically

Private wells in the East Metro (especially in rural Washington County, Anoka County, and Western WI) deal with their own set of issues: nitrates from agricultural runoff, arsenic in some areas, bacteria after periods of low use, plus all the standard hardness and iron concerns.

Fix: Annual well testing through Minnesota Department of Health certified labs. Whole-home treatment train matched to your specific water test.

What every East Metro homeowner should do

Schedule a free in-home water test. Even if your water tastes fine, a 15-minute on-site test tells you exactly what is in your specific water. We test hardness, iron, chlorine, pH, and TDS. For PFAS-zone households, we explain the documented exposure risk and recommend appropriate filtration.

No obligation. No high-pressure pitch.

Call 651-738-0580 or schedule online.

See the Twin Cities water quality map for our city-by-city breakdown.