You just bought a home with a private well. Congratulations. You now control your own water supply.
That is a big responsibility — but it is manageable. This guide walks you through everything you need to know.
Quick Answer
Your first step: Get a comprehensive water test from a certified lab. Test for bacteria, nitrates, pH, iron, hardness, and TDS. This tells you what you are working with. Everything else follows from these numbers.
How a Well Works (30-Second Version)
Your well is a hole drilled deep into the ground. A pump pushes groundwater up through pipes into your home[3].
A pressure tank stores water and keeps your pressure steady. When you open a faucet, water flows from the tank. When the tank pressure drops, the pump turns on to refill it.
That is the whole system: well → pump → pressure tank → your pipes → your faucets.
Have your water test results? Get a plain-English diagnosis.
Analyze My Water TestYour First 30 Days Checklist
Week 1: Test your water
- Order a comprehensive lab test. At minimum: bacteriaColiform BacteriaA group of bacteria used as indicators of potential contamination. Total coliform presence suggests a pathway for pathogens to enter your well.EPA MCL: 0 (no coliform should be present)Learn more → (contamination indicator), nitratesNitratesCompounds that enter groundwater from fertilizers, septic systems, and animal waste. Especially dangerous for infants under 6 months (blue baby syndrome).EPA MCL: 10 mg/L (ppm)Learn more → (fertilizer compounds), pH, ironIronA naturally occurring mineral found in groundwater. Iron causes orange/rust staining on fixtures and laundry and gives water a metallic taste.EPA Secondary MCL: 0.3 mg/L (ppm)Learn more → (staining mineral), hardnessHardness (Calcium Carbonate)The concentration of dissolved calcium and magnesium in water. Hard water causes scale buildup in pipes, water heaters, and fixtures.No EPA standard. Soft: <1 gpg. Moderate: 1-7 gpg. Hard: 7-10.5 gpg. Very Hard: >10.5 gpg.Learn more → (dissolved calcium), TDSTDS (Total Dissolved Solids)The total amount of dissolved minerals, salts, and metals in water. A general indicator of water quality, though not all dissolved solids are harmful.EPA Secondary MCL: 500 mg/LLearn more → (total dissolved solids).
- Add arsenicArsenicA toxic element found naturally in bedrock that dissolves into groundwater. Odorless and tasteless, making testing the only way to detect it.EPA MCL: 10 ppb (0.01 mg/L)Learn more → (toxic bedrock element) if your area has known contamination[2].
- Cost: $80–$200 for a full panel through a mail-in service or local lab.
Week 2: Inspect your well
- Find your well. It is usually a 6-inch pipe sticking 12+ inches out of the ground with a cap.
- Check the well cap is tight and not cracked.
- Make sure the ground around the well slopes away — not toward it.
- Know where your septic system is. It should be at least 50 feet from the well[4].
Week 3: Read your test results
- Use our How to Read a Water Test Report guide.
- Or enter your numbers in the Water Test Interpreter for an instant diagnosis.
- Prioritize: health contaminants first, then aesthetic issues.
Week 4: Take action
- If bacteria detected: shock chlorinate and retest.
- If iron/hardness/sulfur: research treatment options using our filter reviews.
- If everything is clean: set a reminder to retest in 12 months.
5 Most Common Well Water Problems
- Hard water — 85% of wells. Scale, soap scum, dry skin.
- Iron — Orange stains, metallic taste. Most common contaminant.
- Sulfur smell — Rotten egg odor from hydrogen sulfide gas.
- Bacteria — Contamination pathway exists. Needs immediate action.
- Low pH — Corrodes pipes. Causes blue-green stains.
When to Call a Professional
- No water or very low pressure — pump may have failed.
- Sudden change in water color, smell, or taste.
- Visible damage to well cap or casing.
- Persistent bacteria after shock chlorination.
- You need well maintenance or a pump replacement[3].
Ongoing Maintenance Schedule
| Task | Frequency | Estimated Cost |
|---|---|---|
| Bacteria & nitrate test | Annually | $30–$50 |
| Full water panel | Every 3–5 years | $100–$200 |
| Well inspection | Every 10 years (or if issues) | $150–$300 |
| Pressure tank check | Annually | DIY or $50–$100 |
| Filter replacement (if installed) | Per manufacturer | $50–$500/year |
Frequently Asked Questions
What should I do first with a new well?
Get a comprehensive water test[1]. Test bacteria, nitrates, pH, iron, hardness, and TDS. This is your baseline for everything.
How does a well work?
A pump pushes groundwater up through pipes into a pressure tank. The tank maintains steady pressure. When you open a faucet, water flows from the tank[3].
How much does maintenance cost?
$200–$500 per year for testing and upkeep. Pump replacement ($1,000–$2,000) happens every 10–15 years[5].
References
- U.S. EPA. "Private Drinking Water Wells." 2024. https://www.epa.gov/privatewells
- CDC. "Private Ground Water Wells." 2024. https://www.cdc.gov/healthywater/drinking/private
- National Ground Water Association. "Well Owner's Guide." 2024. https://www.ngwa.org
- Penn State Extension. "A Guide to Private Water Systems." 2023.
- Water Quality Association. "New Well Owner's Checklist." 2024. https://wqa.org
- Virginia Cooperative Extension. "Your Private Well: What You Need to Know." 2022.