Gear Review — Water Quality
Most households have never tested their water. The right kit depends on what you are concerned about, whether you are on city water or a private well, and how precise the answer needs to be.
Understanding the options
There are two approaches to home water testing, and they answer different questions. Understanding the distinction before you buy saves money and prevents false confidence.
DIY test strips
Dip a strip in your water, compare the color change to a chart. Results in 60 seconds. Cost: $15 to $30 for a pack of 100 strips.
Good for:
Quick screening of basic parameters — pH, hardness, chlorine, nitrates, iron. Ongoing monitoring between lab tests. First-look checks after plumbing work or flooding.
Cannot detect:
PFAS (at any concentration). Lead at health-relevant precision. Arsenic. Volatile organic compounds. Bacteria at low concentrations. Disinfection byproducts.
Certified lab mail-in kits
You collect a sample at home, ship it to an EPA-accredited lab, and receive a detailed report in 3 to 7 business days. Cost: $160 to $675 depending on the test panel.
Good for:
Establishing a baseline. Detecting lead, arsenic, PFAS, bacteria, disinfection byproducts, VOCs, and dozens of other health contaminants. Results precise enough to guide treatment decisions.
Limitations:
Not instant. More expensive. Results reflect one point-in-time sample — not ongoing monitoring.
The practical approach: Use a certified lab test once to establish a baseline for your home. Use DIY strips for routine monitoring in between. If the strips flag something unusual, send a lab test.
Know your situation
City water priorities
Lead — enters from your home's pipes and fixtures, not the utility's system. Homes built before 1986 are at highest risk.
Disinfection byproducts — trihalomethanes and haloacetic acids form when chlorine reacts with organic matter. Only detectable at the tap.
PFAS — present in nearly half of US tap water per 2026 EPA data. Requires a separate certified PFAS panel.
Copper — can leach from copper pipes and fittings, particularly in newer homes.
Start with: Tap Score Advanced City Water Test
Well water priorities
Bacteria and E. coli — CDC recommends annual testing for all private wells. The most common well water health hazard.
Nitrates — from agricultural runoff and septic systems. Dangerous for infants under 6 months old.
Arsenic — occurs naturally in groundwater in many US regions, particularly the Southwest and Northeast.
Hardness and iron — affect appliances, taste, and staining; not health concerns but important for maintenance.
Start with: Tap Score Essential Well Water Test (annually) + Advanced every 2–3 years
Our top recommendation
Tap Score has been the top recommendation from independent reviewers — including Wirecutter, 2022 through 2025 — for one reason: it uses EPA-accredited certified labs, not proprietary chemistry, and delivers results in a genuinely readable format.
The process is straightforward. Tap Score ships you a collection kit with bottles, instructions, a chain-of-custody form, and a prepaid return shipping label. You collect samples at your tap following specific protocols (some require running the tap for a set time first), ship them back, and receive an interactive online report within three to five business days. The report shows each contaminant, your detected level, the EPA maximum contaminant level, and a health guidance level — which is often more protective than the federal standard.
Choose the right tier for your situation:
City Water — Starting Point
Essential City Water Test
~$160
Covers physical parameters, nitrates, chlorine and chloramines, and toxic metals including lead, arsenic, and copper. A good baseline for households that have never tested and have no specific concerns.
Turnaround: 3–5 business days
City Water — Most Households
RecommendedAdvanced City Water Test
~$200+
Everything in the Essential test, plus trihalomethanes, haloacetic acids, and plastic pipe chemicals. Disinfection byproducts only appear at the tap — not in utility reports — which is exactly why Tap Score recommends this as the standard for most city water households.
Turnaround: 3–5 business days
PFAS — Specific Concern
PFAS Panel (EPA 537.1 / 533)
~$249–260
A separate certified PFAS panel testing for 14 or more PFAS compounds using EPA Methods 537.1 and 533. This is the only way to know if PFAS are in your water — strips and standard lab panels do not test for them. Important for any household near an airport, military base, industrial area, or utility with known PFAS contamination.
Turnaround: 5–10 business days · Can be combined with city or well water panel
Well Water — Annual
Essential Well Water Test
~$160
Covers hardness and alkalinity, general chemistry, nitrates and nitrites, heavy metals, silica, and coliform including E. coli. This is the CDC-recommended annual minimum for private well owners.
Turnaround: 3–5 business days
Well Water — Every 2–3 Years
Advanced Well Water Test
~$280+
Everything in the Essential, plus volatile organic compounds, industrial chemicals, oil and gas indicators, and additional pesticides. Appropriate for wells near agricultural land, industrial sites, oil and gas activity, or any property where land use may have changed.
Turnaround: 5–8 business days
Direct purchase — not available on Amazon
For ongoing monitoring
DIY strips are not a substitute for lab testing — they are a useful complement. After you have a certified lab baseline, strips let you monitor for obvious changes without spending $160 every time. The right time to use them: after any plumbing work, after a flooding event, if your water suddenly tastes or smells different, or as a routine seasonal check.
100 strips plus two bacteria tests, covering 17 parameters: lead, bacteria, fluoride, pH, hardness, chlorine, chloramines, copper, iron, nitrate, nitrite, and more. Results in 60 seconds for strips, 48 hours for the bacteria tests. At $25 to $32 for the pack, the per-test cost is negligible.
Important limitations
Strips are screening tools only. They cannot detect PFAS. They can indicate lead presence but not precise concentration in parts per billion. They are not accurate enough to guide health decisions for vulnerable populations — infants, pregnant women, and immunocompromised individuals. Use strips as an alert system; use certified lab tests as your decision-making data.
Affiliate link — small commission, no cost to you
Testing schedule
You have never tested your water.
Tap Score Advanced City Water Test (city) or Essential Well Water Test (well). This is your baseline. You cannot know what you are dealing with or what filter you need without it.
You are specifically concerned about PFAS.
Tap Score PFAS Panel (~$249). No other method — strips, standard lab panels, or TDS meters — detects PFAS. This is the only test that answers the PFAS question.
You live in a home built before 1986.
Tap Score Advanced City Water Test at minimum — it includes lead at precise concentrations. Pre-1986 homes may have lead solder in the plumbing and are at higher risk of elevated lead at the tap even if the utility water is lead-free.
You are on a private well.
Tap Score Essential Well Water Test annually (bacteria and nitrates are the CDC minimum). Advanced Well Water Test every two to three years, or immediately after flooding, nearby well work, or any change in taste or odor.
You recently had plumbing work done or noticed a change in taste.
DIY strips for an immediate check, followed by a Tap Score Essential if anything looks unusual. A certified lab test is the only way to confirm what the strips flag.
You had a boil water advisory or flooding event.
Tap Score Essential with bacteria panel after the advisory is lifted. Your utility will confirm when the advisory ends, but testing your own tap confirms your specific home's water is clear — especially important for well owners.
Common questions
No. PFAS testing requires specialized laboratory equipment — no strip can detect it. For lead, strips indicate presence or absence but cannot measure concentration in parts per billion, which is what matters for health decisions. Any concern about PFAS or precise lead levels requires a certified lab test.
For city water: once per year with a certified lab test, plus additional testing after plumbing work, flooding, or changes in taste or appearance. For private well water: the CDC recommends annual testing for bacteria and nitrates at minimum, with a comprehensive test every two to three years. Test more frequently after flooding events, nearby well work, or any detected contamination in your area.
Tap Score is a certified mail-in water testing service by SimpleLab that uses EPA-accredited labs. You collect a sample following specific instructions, ship it with the prepaid label, and receive a detailed online report within three to five business days. Wirecutter recommended it as the best home water test from 2022 through 2025. It is worth the cost for any household that has never tested, lives in a pre-1986 home, is on a private well, or has specific concerns about lead, PFAS, or disinfection byproducts.
Municipal water is regulated by the EPA and utilities publish annual Consumer Confidence Reports. However, lead can enter water between the utility's distribution system and your tap through lead service lines and older home plumbing. Disinfection byproducts form during chlorination and only appear at the tap. PFAS may be present from source water contamination. Reading your utility report tells you about their system — testing your tap tells you about your home.
A basic certified lab test covers heavy metals (lead, arsenic, copper), general chemistry (pH, hardness, alkalinity), nitrates and nitrites, and total coliform and E. coli. Advanced tests add disinfection byproducts (trihalomethanes and haloacetic acids), volatile organic compounds, and industrial chemicals. PFAS is always a separate panel requiring specialized analysis. Results are compared against EPA maximum contaminant levels and, with Tap Score, against health guidance benchmarks.
Keep going
Water Testing Guide
Full guide to understanding your test results and what to do about contaminants found.
Best Gravity Water Filter 2026
Once you know what's in your water, here is how to filter it.
Water Preparedness Hub
Storage, filtration, treatment, and well preparedness — the complete domain.
Well Water Preparedness
What well owners need to know about testing, power outages, and backup options.