Regional public water-system information
What's in your water?
Enter a ZIP code to view regional public water-system information and suggested next steps. This report is not a test of your household tap and cannot tell you what is in your own water.
Public-system information is not a tap-water test.
A ZIP lookup provides regional public-system information. It does not establish the quality of water at an individual household tap.
View available regional public water-system information
Source: Not an individual household test
Information describes the sources and scope shown in the report
Source: Check the underlying public source
Household testing uses a sample from that household
Source: Use an appropriate test for your question
Watch: The pH Spectrum
Blood is held at about pH 7.4 in healthy people, while EPA's 6.5 to 8.5 range for tap water is a non-enforceable guideline for taste and plumbing, not a health standard; this 43-second explainer walks through the numbers.
Watch on YouTube · Read the full guide: The pH Spectrum: From Your Blood to Your Tap
Your water touches everything.
It's not just what you drink. The same water runs through your shower, your dishwasher, your washing machine, and into your skin, lungs, and home infrastructure every day.
Testing options
A public-system report and a household sample answer different questions.
Home Infrastructure
Water conditions and plumbing materials vary by location and property.
Household use
Water is used for drinking, cooking, cleaning, and appliances.
Taste, Color & Odor
Taste, color, and odor observations do not identify specific substances; use appropriate testing when needed.
Test. Understand. Protect.
A simple path from regional information to appropriate household testing and product research.
Test
Start with regional information.
View public water-system information by ZIP code. It is not a test of your household tap.
Understand
Learn what the numbers mean.
Peer-reviewed deep-dives on lead, PFAS, microplastics, hardness, chlorine, and the materials your water touches.
Explore the researchProtect
Compare options.
Review product descriptions, installation needs, maintenance, and prices with an independent seller.
Visit supplierWater Equipment for Different Settings
Whether you own a home, rent an apartment, manage a school, or run a business — compare options, installation needs, and current product details.
Check today's priceA supplier Hydrology University works with for residential filtration & atmospheric water generators
Homeowners
Compare whole-house or under-sink systems by format, installation, maintenance, and price.
- Under-Sink RO SystemFrom $208
- Whole-House FiltrationFrom $439
- All-in-One PremiumFrom $1,995
Apartment Renters
Compare countertop and portable options by installation, dimensions, and maintenance; requirements vary by model.
- Portable AWGFrom $349
- Countertop FilterFrom $435
- Hot/Cold/Sparkling UnitFrom $578
Schools & Daycares
Compare equipment options, installation needs, maintenance, and current product documentation for a school or daycare.
- Commercial ROFrom $534
- Whole-Building SystemFrom $2,294
- Custom B2B SolutionContact Us
Offices & Businesses
Compare water equipment and service needs for employees and customers.
- Commercial ROFrom $534
- Break-Room PremiumFrom $1,995
- Hospitality ProgramCustom
Household Guidance
For questions about water used to prepare infant formula, consult current public-health guidance and your health-care provider.
- Public-health guidanceConsult current advice
- Household testingSelect a suitable test
- Product instructionsCheck current documentation
Communities & HOAs
Compare options for shared water supplies, including installation, maintenance, and cost.
- Elite Central SystemFrom $1,732
- Water SoftenerFrom $1,076
- Partnerships ProgramContact Us
WaterVO is an independent seller of water products. Hydrology University is a publisher and referral source, not the seller.
Free Instant Report vs $99 Lab Test
The ZIP-based report shows regional public information and is not a test of your tap. A household test uses a sample collected from the location being tested.
Free Instant Report
Regional public water-system information associated with a ZIP code; it is not personal tap-water testing.
- Instant — no waiting, no shipping
- Available report categories and scoring (if provided)
- Regional public water-system information
- Suggested next steps
- Doesn't test your actual tap water
- Does not measure water from your household tap
- No lab analysis
Water Test Kit
A household sample is distinct from a regional ZIP-code report. Check the seller's current listing for test scope and order details.
- Confirm which parameters are included in the current kit
- Check the listing for laboratory, analytical methods, and sample-handling details
- Review current price, shipping, and order terms before purchasing
- A household sample does not describe other locations or a whole water system
The free ZIP report provides regional public information and is not a test of an individual tap.
Hydrology University
Reviews of home water systems, with sources cited. In-depth courses on water science, purification technology, and environmental sustainability — plus third-party lab testing for your home water.
Regional reports and household tests
A regional public-system report is not a measurement of water from an individual household tap. Use appropriate testing and consult current public-health or utility guidance for your question.