How Do I Test My Well Water in Maryland?
Test your well water through a certified laboratory, your county health department, or an on-site plumber test. Maryland recommends testing private wells at least once a year for bacteria and every 3–5 years for a full panel. In Calvert and Anne Arundel County, iron, low pH, and bacteria are the most common issues.
What to Test For in Southern Maryland
Total Coliform & E. coli Bacteria
Test annuallyThe most critical test. Bacteria contamination has no taste or odor — you won't know without testing.
Nitrates
Test annuallyEspecially important near agricultural land. High nitrates are dangerous for infants and pregnant women.
pH (acidity)
Test every 1–2 yearsAcidic water (below 7.0) corrodes pipes, fixtures, and water heaters. Very common in Southern Maryland wells.
Iron & Manganese
Test every 1–2 yearsCauses orange/brown staining, metallic taste, and shortens appliance life. Common in Calvert County.
Hardness
Test every 2–3 yearsHard water causes scale buildup in pipes, water heaters, and appliances.
Hydrogen Sulfide
Test if you smell sulfurRotten egg odor. Indicates sulfur bacteria or dissolved H₂S in the groundwater.
Lead
Test if home is pre-1986Older homes may have lead solder or lead service lines. No safe level of lead exposure exists.
Testing Options & Cost
Basic Lab Test
contact us for a free estimate
Bacteria + nitrates. Minimum annual test.
Full Panel Lab Test
contact us for a free estimate
Bacteria, nitrates, pH, iron, hardness, lead, VOCs.
On-Site Plumber Test
Often free
Iron, pH, hardness, TDS — included in water treatment consultations.
When You Should Test Immediately
Have more questions? Browse our full FAQ or contact us directly.