Improving your household’s water safety doesn’t require a single large commitment. Some of the most effective steps take less than a minute and cost nothing. Others — like replacing a lead service line or installing a whole-house filter — are larger projects worth planning over weeks or months. This guide organizes everything by effort level so you can act immediately and build from there.
Quick Actions: Do These Today
Run cold water before drinking
Before filling a glass or pot, run the cold tap for 30 seconds. This flushes water that has been sitting in your home’s pipes, where it may have been in contact with lead solder, brass fittings, or — in older homes — lead pipes. The longer water sits in contact with metal plumbing, the more contaminants it can pick up.
This matters most first thing in the morning or after the water has been unused for several hours. In apartments or buildings with shared plumbing, run water for a full minute to be thorough.
Always cook with cold water
Hot water dissolves lead from pipes and fixtures significantly faster than cold water. Always start with cold tap water for cooking, making coffee or tea, and especially for preparing infant formula. The water heater is not a point of contamination itself, but it draws from the hot water line, which has more contact time with pipe metal.
This is a small habit change with meaningful impact if lead is a concern in your plumbing.
Check your city’s water quality
Visit cleanwaterindex.com and look up your water system. This gives you an overview of detected contaminants, compliance history, and how your water compares to EPA standards. Take five minutes to understand what’s actually in your water before deciding what steps to prioritize.
If you’re on a private well, this doesn’t apply — well water isn’t tracked in EPA databases. See our well water testing guide instead.
Stop drinking from garden hoses
Garden hoses commonly contain lead, antimony, and phthalates that leach into water sitting inside them. This is particularly relevant for children who drink from hoses during outdoor play. If you want to run water outside for drinking, use a hose with a “drinking water safe” label, or bring water from inside.
Medium Steps: This Week
Read your Consumer Confidence Report
Every community water system in the US is required to publish an annual Consumer Confidence Report (CCR). It lists every contaminant detected in the previous year, the levels found, and how they compare to EPA limits. Many utilities post the CCR on their website; if you can’t find it, call the utility and request a copy — they’re required to provide one.
Reading the CCR takes about 10 minutes and tells you exactly what’s present at the tap, which contaminants are near their legal limits, and whether any violations occurred. This is the factual foundation for any further steps you take.
Get independent water testing
Your CCR covers water at the treatment plant, but it doesn’t measure what comes out of your specific faucet. Lead, for example, typically enters water after it leaves the treatment plant — from your home’s service line, interior plumbing, or faucet fixtures. The only way to know your household’s actual exposure is to test at the tap.
Order a test from a state-certified laboratory, not a home test kit. A basic lead test runs about $20–30. A more comprehensive panel covering lead, bacteria, nitrate, and common VOCs typically costs $50–150. Your state health department’s website lists certified labs, or call the EPA’s Safe Drinking Water Hotline at 1-800-426-4791.
Install a point-of-use filter matched to your contaminants
If your CCR or independent test shows contaminants of concern, a point-of-use filter at the kitchen tap is the most cost-effective immediate solution. The key is matching the filter to your specific contaminants — not all filters address all problems.
- For lead: look for an NSF 53-certified pitcher, faucet-mount, or under-sink filter
- For PFAS: look for NSF P473 certification or a reverse osmosis system
- For nitrate: reverse osmosis only — carbon filters do not remove nitrate
- For disinfection byproducts (chloroform, etc.): NSF 53 activated carbon
See our full water filter guide for a detailed breakdown of filter types, certifications, and costs.
Schedule annual testing if you’re on a well
Private well owners have no utility handling testing and treatment. At minimum, test annually for total coliform bacteria and nitrate. Both can be dangerous at elevated levels and neither has a taste or smell. Most county health departments offer subsidized testing, and many states have well water assistance programs.
Comprehensive Actions: This Month and Beyond
Install an under-sink reverse osmosis system
For households with confirmed PFAS, arsenic, nitrate, lead, or multiple contaminants, a reverse osmosis system is the most comprehensive point-of-use solution available. RO removes 95% or more of most dissolved contaminants, including ones that carbon filtration alone doesn’t address.
A quality under-sink RO system costs $150–400 upfront, with roughly $80–150 per year in replacement filters and membranes. Installation typically involves attaching to the cold water supply line under the sink and installing a dedicated tap — many systems are DIY-installable in a few hours, or a plumber can do it in less than one.
Consider RO as your primary drinking and cooking water source while leaving the main tap for dishes and hand-washing, where filtration matters less.
Find out if you have a lead service line
The service line is the pipe that connects the water main in the street to your home. In homes built before 1986, this pipe may be made of lead. Your home’s interior plumbing may also contain lead pipes or lead solder, particularly in homes built before 1986.
To find out:
- Contact your water utility. Under the Lead and Copper Rule Revisions (LCRR), utilities are required to maintain service line inventories and share this information with customers.
- Check your water meter pit. The pipe leading from the meter toward your home is often visible; lead pipe is dull gray and scratches easily to reveal a shiny silver surface.
- Check property records or ask your utility for historical construction records.
Explore lead service line replacement programs
If you have a lead service line, replacement is the permanent solution. Many utilities now offer full or partial replacement programs, especially under pressure from updated EPA rules. Some offer free replacement; others provide low-interest financing. Contact your utility to ask what’s available.
In the meantime, a certified point-of-use filter at each tap used for drinking or cooking provides effective protection while longer-term replacement is arranged.
Consider whole-house filtration for specific concerns
Whole-house filters treat all water entering the home and make sense for issues that affect more than drinking water:
- A sediment filter protects appliances and reduces particulate matter
- A carbon whole-house filter reduces chlorine in shower water and throughout the home
- An iron/manganese filter prevents staining and off-tastes
Whole-house systems are generally a complement to point-of-use filtration, not a replacement. They’re not typically certified for contaminants like lead or PFAS at levels relevant to drinking.
Special Populations: Extra Precautions Worth Taking
Infants and young children
Children absorb lead at a much higher rate than adults, and lead exposure during early brain development has permanent effects. There is no safe level of lead exposure for children, and the EPA’s own goal is zero detectable lead in drinking water.
For infants:
- Use filtered or bottled water for formula preparation
- Never use hot tap water — always start with cold and heat it separately
- If you’re breastfeeding, your own exposure to lead passes through breast milk at low levels; the same filtration steps apply
For children generally, using an NSF 53-certified filter for drinking and cooking water is the single most impactful precaution you can take if lead is at all a concern in your home.
Pregnant women
Nitrate exposure above 10 mg/L is associated with methemoglobinemia in infants and has been studied in relation to pregnancy outcomes. If your water contains elevated nitrate — common in agricultural areas and in private wells — use reverse osmosis or bottled water for drinking during pregnancy.
Lead exposure during pregnancy also poses risk to fetal development. The same filtration precautions recommended for children apply here.
Elderly and immunocompromised individuals
People with weakened immune systems — due to age, illness, or medical treatment — are more vulnerable to microbial contaminants including cryptosporidium and giardia, which are resistant to standard chlorine disinfection. During periods of immunocompromise, consider:
- Boiling water or using a reverse osmosis system with a UV stage
- Watching utility communications carefully for any boil water notices or health advisories
- Checking with a physician about specific water safety recommendations during treatment
Stay Informed Over Time
Water quality isn’t static. Treatment processes change, new contaminants get identified, and infrastructure ages. A few low-effort habits keep you current:
- Sign up for utility notifications. Most utilities offer email or text alerts for boil water notices, main breaks, and other service disruptions. Register on your utility’s website.
- Check cleanwaterindex.com periodically. EPA data is updated as utilities report violations and monitoring results. Checking once or twice a year takes a few minutes.
- Read each year’s CCR. Even if nothing changes, a quick review keeps you aware of what’s being measured and at what levels.
- Attend local water board meetings. Most utilities hold public meetings and publish meeting minutes. This is where decisions about infrastructure investment and water source changes get made.
Water safety at the household level is mostly a matter of knowing what’s in your water and making proportionate responses. The steps above aren’t exhaustive, but they cover the actions that deliver the most protection per unit of effort — and many of them cost nothing at all.