Your water, on the record
Look up what's in your tap water.
Most utilities meet every EPA legal limit and still carry contaminants far above the stricter health guidelines. Enter your ZIP to see the gap — no leaving the page, no signup to look.
What's really in your tap water?
Enter your ZIP and see the contaminants found in your local supply — with the EPA legal limit, the stricter health guideline, and how far over it runs. No leaving the page.
Salt Lake City, UT · Salt Lake City Dept. of Public Utilities
Showing the nearest verified system in our data.
0
contaminants detected
0
over health guidelines
0
EPA legal violations
Legal on paper — zero EPA violations — yet 16 contaminants exceed the stricter, science-based health guidelines. That gap is exactly what a home filter is for.
| Contaminant | Your area | EPA legal limit | Health guideline | Over guideline |
|---|---|---|---|---|
| Haloacetic acids (HAA9) | 34.9 ppb | No federal limit | 0.06 ppb | 582× over |
| Haloacetic acids (HAA5) | 32 ppb | 60 ppb | 0.1 ppb | 324× over |
| Total trihalomethanes (TTHMs) | 40 ppb | 80 ppb | 0.15 ppb | 223× over |
| Arsenic | 0.96 ppb | 10 ppb | 0.004 ppb | 109× over |
| Chromium-6 | 0.44 ppb | 100 ppb (total Cr) | 0.02 ppb | 22× over |
| Nitrate | 1.62 ppm | 10 ppm | 0.14 ppm | 12× over |
- Your area
- 34.9 ppb
- EPA legal limit
- No federal limit
- Health guideline
- 0.06 ppb
- Your area
- 32 ppb
- EPA legal limit
- 60 ppb
- Health guideline
- 0.1 ppb
- Your area
- 40 ppb
- EPA legal limit
- 80 ppb
- Health guideline
- 0.15 ppb
- Your area
- 0.96 ppb
- EPA legal limit
- 10 ppb
- Health guideline
- 0.004 ppb
- Your area
- 0.44 ppb
- EPA legal limit
- 100 ppb (total Cr)
- Health guideline
- 0.02 ppb
- Your area
- 1.62 ppm
- EPA legal limit
- 10 ppm
- Health guideline
- 0.14 ppm
Source: EWG Tap Water Database + Salt Lake City 2025 Consumer Confidence Report (PWSID UTAH18026), data 2021–2025. EWG health guidelines are science-based advocacy benchmarks, not legal limits — a utility can fully comply with EPA law while exceeding them. Educational only; not a claim about your specific address or a health-outcome claim.
These are the exact contaminants a whole-home Sentry H2O system targets.
City or well — both whole-home options include the under-sink drinking unit.
Los Angeles, CA · LA Dept of Water and Power (LADWP)
Showing the nearest verified system in our data.
0
contaminants detected
0
over health guidelines
0
EPA legal violations
Legal on paper — zero EPA violations — yet 9 contaminants exceed the stricter, science-based health guidelines. That gap is exactly what a home filter is for.
| Contaminant | Your area | EPA legal limit | Health guideline | Over guideline |
|---|---|---|---|---|
| Arsenic | ~2 ppb | 10 ppb | 0.004 ppb | 500× over |
| Total trihalomethanes (TTHMs) | ~65 ppb | 80 ppb | 0.15 ppb | 433× over |
| Haloacetic acids (HAA5) | ~35 ppb | 60 ppb | 0.1 ppb | 350× over |
| Chromium-6 | ~0.24 ppb | No federal limit | 0.02 ppb | 12× over |
| Nitrate | ~1.7 ppm | 10 ppm | 0.14 ppm | 12× over |
- Your area
- ~2 ppb
- EPA legal limit
- 10 ppb
- Health guideline
- 0.004 ppb
- Your area
- ~65 ppb
- EPA legal limit
- 80 ppb
- Health guideline
- 0.15 ppb
- Your area
- ~35 ppb
- EPA legal limit
- 60 ppb
- Health guideline
- 0.1 ppb
- Your area
- ~0.24 ppb
- EPA legal limit
- No federal limit
- Health guideline
- 0.02 ppb
- Your area
- ~1.7 ppm
- EPA legal limit
- 10 ppm
- Health guideline
- 0.14 ppm
Source: EWG Tap Water Database + LADWP 2024 Water Quality Report (PWSID CA1910067), data 2021–2024. EWG health guidelines are science-based advocacy benchmarks, not legal limits — a utility can fully comply with EPA law while exceeding them. Educational only; not a claim about your specific address or a health-outcome claim.
These are the exact contaminants a whole-home Sentry H2O system targets.
City or well — both whole-home options include the under-sink drinking unit.
New York City, NY · NYC Dept of Environmental Protection
Showing the nearest verified system in our data.
0
contaminants detected
0
over health guidelines
0
EPA legal violations
Legal on paper — zero EPA violations — yet 6 contaminants exceed the stricter, science-based health guidelines. That gap is exactly what a home filter is for.
| Contaminant | Your area | EPA legal limit | Health guideline | Over guideline |
|---|---|---|---|---|
| Haloacetic acids (HAA5) | ~65 ppb | 60 ppb | 0.1 ppb | 650× over |
| Total trihalomethanes (TTHMs) | ~56 ppb | 80 ppb | 0.15 ppb | 373× over |
- Your area
- ~65 ppb
- EPA legal limit
- 60 ppb
- Health guideline
- 0.1 ppb
- Your area
- ~56 ppb
- EPA legal limit
- 80 ppb
- Health guideline
- 0.15 ppb
Source: EWG Tap Water Database + NYC DEP 2024 Drinking Water Supply & Quality Report (PWSID NY7003493), data 2021–2024. EWG health guidelines are science-based advocacy benchmarks, not legal limits — a utility can fully comply with EPA law while exceeding them. Educational only; not a claim about your specific address or a health-outcome claim.
These are the exact contaminants a whole-home Sentry H2O system targets.
City or well — both whole-home options include the under-sink drinking unit.
Phoenix, AZ · City of Phoenix Water Services Dept.
Showing the nearest verified system in our data.
0
contaminants detected
0
over health guidelines
0
EPA legal violations
Legal on paper — zero EPA violations — yet 8 contaminants exceed the stricter, science-based health guidelines. That gap is exactly what a home filter is for.
| Contaminant | Your area | EPA legal limit | Health guideline | Over guideline |
|---|---|---|---|---|
| Arsenic | 4.1 ppb | 10 ppb | 0.004 ppb | 1026× over |
| Chromium-6 | 0.41 ppb | No federal limit | 0.02 ppb | 20× over |
| Chlorite | 131 ppb | 1,000 ppb | 50 ppb | 3× over |
- Your area
- 4.1 ppb
- EPA legal limit
- 10 ppb
- Health guideline
- 0.004 ppb
- Your area
- 0.41 ppb
- EPA legal limit
- No federal limit
- Health guideline
- 0.02 ppb
- Your area
- 131 ppb
- EPA legal limit
- 1,000 ppb
- Health guideline
- 50 ppb
Source: EWG Tap Water Database + City of Phoenix Water Quality Report (PWSID AZ0407025), data 2021–2024. EWG health guidelines are science-based advocacy benchmarks, not legal limits — a utility can fully comply with EPA law while exceeding them. Educational only; not a claim about your specific address or a health-outcome claim.
These are the exact contaminants a whole-home Sentry H2O system targets.
City or well — both whole-home options include the under-sink drinking unit.
Las Vegas, NV · Las Vegas Valley Water District
Showing the nearest verified system in our data.
0
contaminants detected
0
over health guidelines
0
EPA legal violations
Legal on paper — zero EPA violations — yet 17 contaminants exceed the stricter, science-based health guidelines. That gap is exactly what a home filter is for.
| Contaminant | Your area | EPA legal limit | Health guideline | Over guideline |
|---|---|---|---|---|
| Total trihalomethanes (TTHMs) | 77 ppb | 80 ppb | 0.15 ppb | 513× over |
| Arsenic | ~2 ppb | 10 ppb | 0.004 ppb | 500× over |
| Haloacetic acids (HAA5) | 42 ppb | 60 ppb | 0.1 ppb | 420× over |
- Your area
- 77 ppb
- EPA legal limit
- 80 ppb
- Health guideline
- 0.15 ppb
- Your area
- ~2 ppb
- EPA legal limit
- 10 ppb
- Health guideline
- 0.004 ppb
- Your area
- 42 ppb
- EPA legal limit
- 60 ppb
- Health guideline
- 0.1 ppb
Source: EWG Tap Water Database + LVVWD 2024 Water Quality Report (PWSID NV0000090), data 2021–2024. EWG health guidelines are science-based advocacy benchmarks, not legal limits — a utility can fully comply with EPA law while exceeding them. Educational only; not a claim about your specific address or a health-outcome claim.
These are the exact contaminants a whole-home Sentry H2O system targets.
City or well — both whole-home options include the under-sink drinking unit.
Not verified yet
We don't have a verified report for your ZIP yet.
We only publish water data we have verified against the utility's own filings, so we will not invent one for this ZIP. Leave your ZIP and email and we'll add it to the request list.
This adds your ZIP to the request list — it does not generate or send a report automatically, and we cannot promise a date. By joining you agree to receive Mountain Pure Water emails. Opt out anytime by calling (435) 990-3778.
Here's what we can show you right now
The nearest EPA-listed community water systems to your ZIP:
Nearest system by straight-line distance from your ZIP's center — not necessarily the utility that serves your address. Source: EPA SDWA registry (2026 Q2) + U.S. Census ZCTA centroids. We publish a verified contaminant breakdown only once we have checked that utility's own filings.
Here's what one of our verified reports looks like:
Go deeper
Three more ways to know your water
The ZIP lookup is a starting point. To know exactly what's in your own water, these confirm it.
Know your water
Know what is in your water before you choose a system.
Start with independent findings for your area, then match your home to the right Sentry H2O system.
Read your local water report
Your area's annual Consumer Confidence Report (CCR) lists what has been detected in your municipal tap water.
Salt Lake City? See what's really in your water →Check the EWG Tap Water Database
Enter your zip code for a plain-language breakdown of the contaminants found in your local supply.
Open the EWG database →At-home test kit (for well water and specific concerns)
Use our mail-in well-water kit when an individual result makes sense for your source or concern.
Shop the well-water kit →Want help matching the result to a Sentry H2O system?
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