# The Water Map

> A verified, public dataset of U.S. drinking water quality, built from utilities' annual Consumer Confidence Reports. Every contaminant figure is transcribed from the utility's own report, cross-checked by a second model, and human-approved before it is published.

## Dataset at a glance

- Water systems: 29
- Contaminant measurements indexed: 423
- Coverage: U.S. public drinking water systems
- License: Creative Commons Attribution 4.0
- JSON API (all systems): https://www.thewatermap.com/api/water
- JSON API (one system): https://www.thewatermap.com/api/water/{slug}
- Browseable hub: https://www.thewatermap.com/water

## Water systems

### AL

- [Birmingham, AL](https://www.thewatermap.com/water/birmingham-al): drinking water quality, 0 contaminants measured. Markdown: https://www.thewatermap.com/water/birmingham-al/llms.txt — JSON: https://www.thewatermap.com/api/water/birmingham-al

### AR

- [Fayetteville, AR](https://www.thewatermap.com/water/fayetteville-ar): drinking water quality, 9 contaminants measured. Markdown: https://www.thewatermap.com/water/fayetteville-ar/llms.txt — JSON: https://www.thewatermap.com/api/water/fayetteville-ar

### CA

- [Concord, CA](https://www.thewatermap.com/water/concord-ca): drinking water quality, 0 contaminants measured. Markdown: https://www.thewatermap.com/water/concord-ca/llms.txt — JSON: https://www.thewatermap.com/api/water/concord-ca
- [Pasadena, CA](https://www.thewatermap.com/water/pasadena-ca): drinking water quality, 65 contaminants measured. Markdown: https://www.thewatermap.com/water/pasadena-ca/llms.txt — JSON: https://www.thewatermap.com/api/water/pasadena-ca
- [Rancho Cucamonga, CA](https://www.thewatermap.com/water/rancho-cucamonga-ca): drinking water quality, 24 contaminants measured. Markdown: https://www.thewatermap.com/water/rancho-cucamonga-ca/llms.txt — JSON: https://www.thewatermap.com/api/water/rancho-cucamonga-ca

### FL

- [Fort Lauderdale, FL](https://www.thewatermap.com/water/fort-lauderdale-fl): drinking water quality, 13 contaminants measured. Markdown: https://www.thewatermap.com/water/fort-lauderdale-fl/llms.txt — JSON: https://www.thewatermap.com/api/water/fort-lauderdale-fl
- [Gainesville, FL](https://www.thewatermap.com/water/gainesville-fl): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/gainesville-fl/llms.txt — JSON: https://www.thewatermap.com/api/water/gainesville-fl
- [Port St Lucie, FL](https://www.thewatermap.com/water/port-st-lucie-fl): drinking water quality, 14 contaminants measured. Markdown: https://www.thewatermap.com/water/port-st-lucie-fl/llms.txt — JSON: https://www.thewatermap.com/api/water/port-st-lucie-fl
- [Tampa, FL](https://www.thewatermap.com/water/tampa-fl): drinking water quality, 18 contaminants measured. Markdown: https://www.thewatermap.com/water/tampa-fl/llms.txt — JSON: https://www.thewatermap.com/api/water/tampa-fl

### GA

- [Savannah, GA](https://www.thewatermap.com/water/savannah-ga): drinking water quality, 9 contaminants measured. Markdown: https://www.thewatermap.com/water/savannah-ga/llms.txt — JSON: https://www.thewatermap.com/api/water/savannah-ga

### IA

- [Cedar Rapids, IA](https://www.thewatermap.com/water/cedar-rapids-ia): drinking water quality, 25 contaminants measured. Markdown: https://www.thewatermap.com/water/cedar-rapids-ia/llms.txt — JSON: https://www.thewatermap.com/api/water/cedar-rapids-ia

### KS

- [Olathe, KS](https://www.thewatermap.com/water/olathe-ks): drinking water quality, 23 contaminants measured. Markdown: https://www.thewatermap.com/water/olathe-ks/llms.txt — JSON: https://www.thewatermap.com/api/water/olathe-ks

### MA

- [Boston, MA](https://www.thewatermap.com/water/boston-ma): drinking water quality, 7 contaminants measured. Markdown: https://www.thewatermap.com/water/boston-ma/llms.txt — JSON: https://www.thewatermap.com/api/water/boston-ma
- [Brockton, MA](https://www.thewatermap.com/water/brockton-ma): drinking water quality, 16 contaminants measured. Markdown: https://www.thewatermap.com/water/brockton-ma/llms.txt — JSON: https://www.thewatermap.com/api/water/brockton-ma

### MD

- [Avon Crest, MD](https://www.thewatermap.com/water/avon-crest-md): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/avon-crest-md/llms.txt — JSON: https://www.thewatermap.com/api/water/avon-crest-md
- [Banks O Dee, MD](https://www.thewatermap.com/water/banks-o-dee-md): drinking water quality, 6 contaminants measured. Markdown: https://www.thewatermap.com/water/banks-o-dee-md/llms.txt — JSON: https://www.thewatermap.com/api/water/banks-o-dee-md
- [Barrelville, MD](https://www.thewatermap.com/water/barrelville-md): drinking water quality, 3 contaminants measured. Markdown: https://www.thewatermap.com/water/barrelville-md/llms.txt — JSON: https://www.thewatermap.com/api/water/barrelville-md
- [Brophytown Distribution System, MD](https://www.thewatermap.com/water/brophytown-md): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/brophytown-md/llms.txt — JSON: https://www.thewatermap.com/api/water/brophytown-md
- [Brunswick, MD](https://www.thewatermap.com/water/brunswick-md): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/brunswick-md/llms.txt — JSON: https://www.thewatermap.com/api/water/brunswick-md
- [City of Annapolis, MD](https://www.thewatermap.com/water/annapolis-md): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/annapolis-md/llms.txt — JSON: https://www.thewatermap.com/api/water/annapolis-md
- [Gramercy, MD](https://www.thewatermap.com/water/gramercy-md): drinking water quality, 4 contaminants measured. Markdown: https://www.thewatermap.com/water/gramercy-md/llms.txt — JSON: https://www.thewatermap.com/api/water/gramercy-md
- [Metropolitan of Baltimore, MD](https://www.thewatermap.com/water/metropolitan-of-baltimore-md): drinking water quality, 3 contaminants measured. Markdown: https://www.thewatermap.com/water/metropolitan-of-baltimore-md/llms.txt — JSON: https://www.thewatermap.com/api/water/metropolitan-of-baltimore-md
- [Rockville, MD](https://www.thewatermap.com/water/rockville-md): drinking water quality, 0 contaminants measured. Markdown: https://www.thewatermap.com/water/rockville-md/llms.txt — JSON: https://www.thewatermap.com/api/water/rockville-md
- [Town of Denton, MD](https://www.thewatermap.com/water/denton-md): drinking water quality, 10 contaminants measured. Markdown: https://www.thewatermap.com/water/denton-md/llms.txt — JSON: https://www.thewatermap.com/api/water/denton-md

### MN

- [Saint Paul, MN](https://www.thewatermap.com/water/saint-paul-mn): drinking water quality, 20 contaminants measured. Markdown: https://www.thewatermap.com/water/saint-paul-mn/llms.txt — JSON: https://www.thewatermap.com/api/water/saint-paul-mn

### NC

- [Durham, NC](https://www.thewatermap.com/water/durham-nc): drinking water quality, 8 contaminants measured. Markdown: https://www.thewatermap.com/water/durham-nc/llms.txt — JSON: https://www.thewatermap.com/api/water/durham-nc
- [Wilmington, NC](https://www.thewatermap.com/water/wilmington-nc): drinking water quality, 50 contaminants measured. Markdown: https://www.thewatermap.com/water/wilmington-nc/llms.txt — JSON: https://www.thewatermap.com/api/water/wilmington-nc

### NE

- [Omaha, NE](https://www.thewatermap.com/water/omaha-ne): drinking water quality, 45 contaminants measured. Markdown: https://www.thewatermap.com/water/omaha-ne/llms.txt — JSON: https://www.thewatermap.com/api/water/omaha-ne

### WA

- [Spokane Valley, WA](https://www.thewatermap.com/water/spokane-valley-wa): drinking water quality, 11 contaminants measured. Markdown: https://www.thewatermap.com/water/spokane-valley-wa/llms.txt — JSON: https://www.thewatermap.com/api/water/spokane-valley-wa

## Reference & about

- [Water systems hub](https://www.thewatermap.com/water): every system, grouped by state
- [FAQ](https://www.thewatermap.com/faq): where the data comes from and how it is verified
- [API access](https://www.thewatermap.com/api-access): the REST API and MCP server
- Standards reference: contaminant figures are compared to EPA National Primary Drinking Water Regulations (MCLs, action levels, treatment techniques) carried with each measurement.