Wastewater Trends

See which illnesses are showing up in your community’s wastewater right now.

Wastewater measurements reflect community-level trends and should not be interpreted as an individual’s risk of infection.

First, where do you live?

Pick the wastewater treatment plant closest to you. You only have to do this once — this page will remember it.

Your location is only used in your browser to find the closest plant. It is never sent anywhere.

What’s going around near you

What do these levels mean?

Wastewater from your area is tested regularly. When more people in a community have an illness, more traces of it show up in the wastewater — often before doctors’ offices notice a rise.

WastewaterSCAN, the research programme that collects this data, sets the level for each illness by comparing the most recent measurements against what this plant normally sees. The words below are theirs, not ours.

Not detected: None found in the latest sample.
Very low / Low: Present, but well below this plant’s usual range.
Medium: Around this plant’s usual range.
High / Very high: Above this plant’s usual range.

The level is not the latest test. It is set from several weeks of measurements, adjusted for how dilute the wastewater was. Individual tests swing a lot with rainfall and sampling time, so one result can sit above or below the level without the level moving.

Rising, falling or steady compares the last three weeks of samples: the average of the most recent half against the half before it.

Why the date is a few days back. Each plant is tested every two to three days, and a result takes about two days to arrive. They also arrive in batches, so the newest dates keep filling in for a while. “Most recent complete data” is the last date by which most plants had reported.

This is not a measure of your personal risk. It describes the whole community served by one treatment plant.

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Compare

State

Site

Pathogens

Measurement

Date range

Scale

7-day average

Wastewater measurements

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Non-detects (zero) cannot be drawn on a logarithmic scale and appear as gaps.

About this data

How to use Wastewater Trends

Treatment plants across the United States test their wastewater for viruses and other markers. This site lets you explore those measurements, compare places, and share what you find.

Tell us where you live Pick the treatment plant closest to you, or let the page find it. You only do this once.
See what’s going around Each illness shows a level in plain words — low, medium, high — and whether it has been rising or falling.
Tap “Show more” for detail Recent test results, the last 90 days at a glance, and what the numbers actually mean.

Good to know

Wastewater often shows a rise before it is obvious elsewhere, because it picks up everyone in the area at once.
Levels are compared against what your own plant normally sees, so “high” means high for your area.
Not every town has a plant in the programme. If yours does not, the page will offer the nearest one that does.

This shows trends for a whole community. It is not a measure of any one person’s risk of infection.

Pick a place Narrow by state, then choose a treatment plant. The search box matches plant names and cities.
Choose what to compare Either one site with several pathogens, or one pathogen across several sites — up to 8 lines at a time.
Read the trend Each card shows the most recent measurement and whether it has been rising, falling, or stable over roughly the last three weeks.
Save or share it Every setting lives in the address bar. Bookmark the page, or press Copy view link and whoever opens it sees exactly your view. Download CSV exports what is on screen.

Good to know

Looking for COVID? It is listed under the virus name, SARS-CoV-2 — searching “covid” finds it.
Comparing different cities? Set Measurement to Normalized to PMMoV. Raw concentrations depend on how diluted each sewer system is, so they are not directly comparable between places.
Lines squashed flat? Switch Scale to Log. Pathogens can differ by thousands of times, so one large series flattens the rest.
A gap in a line means no sample around that date — not a zero.

Wastewater measurements reflect community-level trends and should not be interpreted as an individual’s risk of infection.

Visualized by Tip10 Technologies · Wastewater data collected and published by WastewaterSCAN

Data source, attribution and independence

Source: WastewaterSCAN.

This is an independent, open-source visualization of published WastewaterSCAN data. It is not affiliated with or endorsed by WastewaterSCAN, Stanford University, Emory University, or Verily.