Report Finds Weak Spots in the Los Angeles Water Grid

A "water atlas" compiled by UCLA's Luskin Center for Innovation reveals the patchwork that is Los Angeles' water supply system. Neighborhoods reliant on small providers and groundwater sources may be vulnerable.

1 minute read

May 30, 2015, 9:00 AM PDT

By Philip Rojc @PhilipRojc


drinking fountain

Katherine Johnson / Flickr

Along with continuing drought, Los Angeles faces the challenges of decentralized water infrastructure. The city's "water grid" is a web of services ranging from local suppliers serving hundreds to the LADWP, with over 4 million customers. 

Put together by the UCLA Luskin Center for Innovation, "the Los Angeles County Community Water System Atlas and Policy Guide uses maps and graphs to powerful effect to show the spectrum of these system types, and how they're equipped to handle severe water conditions."

CityLab's Laura Bliss writes, "Across the board, some 75 percent of these systems evidence some kind of supply vulnerability—whether due to their small size, dependence on a single water supply, contamination in local groundwater, or a projected increase in super hot days in the years to come."

While contaminated water isn't a problem for most residents, substandard water systems can have severe local impacts. "Individuals from disadvantaged communities—marked by linguistic isolation, poverty, and high unemployment—are more likely to suffer health impacts from drinking low-quality water than those from non-disadvantaged communities."

Friday, May 15, 2015 in CityLab

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 16, 2025 - Diana Ionescu

Bird's eye view of large apartment complex under construction next to four-lane road near Atlanta, Georgia.

How Atlanta Built 7,000 Housing Units in 3 Years

The city’s comprehensive, neighborhood-focused housing strategy focuses on identifying properties and land that can be repurposed for housing and encouraging development in underserved neighborhoods.

April 9, 2025 - Governing

People walking up and down stairs in New York City subway station.

In Both Crashes and Crime, Public Transportation is Far Safer than Driving

Contrary to popular assumptions, public transportation has far lower crash and crime rates than automobile travel. For safer communities, improve and encourage transit travel.

2 hours ago - Scientific American

White public transit bus with bike on front bike rack in Nashville, Tennessee.

Report: Zoning Reforms Should Complement Nashville’s Ambitious Transit Plan

Without reform, restrictive zoning codes will limit the impact of the city’s planned transit expansion and could exclude some of the residents who depend on transit the most.

3 hours ago - Bloomberg CityLab

An engineer controlling a quality of water ,aerated activated sludge tank at a waste water treatment plant.

Judge Orders Release of Frozen IRA, IIJA Funding

The decision is a victory for environmental groups who charged that freezing funds for critical infrastructure and disaster response programs caused “real and irreparable harm” to communities.

4 hours ago - Smart Cities Dive