There seems to be a fear that we are running out of water, and that's not really the case ... it comes down to supply and demand.

— Susan Brown, Water & Sewer Superintendent, Town of Orleans

Cape Cod’s Patchwork Water Systems

About the Author: Noah Johnson

Cape Cod’s long-term drought has highlighted the patchwork of public water providers across the Cape Cod and the future need for coordination.

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11 September 2026 — CAPE COD, MA — Cape Cod’s long-term drought has highlighted the patchwork of public water providers across the Cape Cod and the future need for coordination.

Does Cape Cod have multiple water suppliers?

Cape Cod’s long-term drought triggered restrictions by public water providers across the region this summer. The restrictions targeted non-essential outdoor use; however, the level of restriction differs between communities.

Officials say multiple factors contribute to the variety of regulations from dozens of different water suppliers, including local permits, location, and other different circumstances.

Why does the patchwork of suppliers create a challenge?

“You’ve got 15 different communities with different pressures and different select boards and different opinions,” said Robert Faley, Director of Chatham’s Dept. of Public Works. “To try to get them speaking the same language is a challenge.”

As of Sept. 1, at least 14 public water suppliers on Cape Cod restrict non-essential outdoor use, according to the Massachusetts Department of Environmental Protection (MassDEP).

Why is there so much variation?

The region features a patchwork of different regulations, including mandatory bans, weekly limitations, and voluntary guidelines, because water is supplied by many different organizations, each with its own guidelines.

For example, in Barnstable alone, the Hyannis Water System imposes a mandatory twice-per-week restriction, while the departments serving Cotuit and COMM (Centerville, Osterville and Marstons Mills) seek only voluntary compliance.

“I almost wish DEP would come down and say, ‘these are your restrictions for this aquifer [lens], because these are the impacts we’re seeing,” Faley said.

“I think it would be a struggle for DEP to try to do that, but I think from an operational perspective, from someone who manages a water system, I think it would be an easier lift for us to have something mandated.”

What are the obstacles to looking at water as a region?

The region water relies on a single aquifer for its water. While the sole-source aquifer would seem to suggest a regional approach, it’s not that simple.

Unfortunately for the region’s public water suppliers, geographic and municipal obstacles hamper the introduction of a regional decision-making body.

What is an aquifer lens?

For starters, although the aquifer draws on the ground water source, it contains six separate areas, called lenses. An aquifer lens is sort of convex lens-shaped bubble of fresh water that rides on top of the saltier water below.

So, while Cape Cod pulls its groundwater from a sole-source aquifer, that does not mean every community draws from the same part of the pool. Instead, these six freshwater lenses serve different parts of the region.

“The problem is we don’t pull from a single aquifer lens,” said Susan Brown, Orleans’ Water and Sewer Superintendent.

“To say the Cape is one entity, yeah that’s true to some [extent],” Faley said. “But there’s six different [lenses] and say Sandwich may be getting abundant rainfall, but Truro is extremely dry.”

Where are the lenses?

Starting from the canal and moving east, the six lenses are:

Sagamore
Monomoy
Nauset
Chequessett
Pamet
Pilgrim

The six lenses vary in size, volume, and impact. For example, the Sagamore and Monomoy lenses alone provide for 11 of the Cape’s 15 towns.

Why can my neighbors water and I can’t?

Under the current community-by-community setup, Brown says “you get that question, ‘why can my neighbors water and I can’t.”

Even within a single lens, neighboring communities may impose different restrictions.

For example, as of Sept. 1, Monomoy Lens neighbors Orleans and Chatham impose different regulations: Orleans has a mandatory ban on non-essential outdoor use, while Chatham has a mandatory restriction twice-per-week.

The Sagamore Lens features more extreme examples, such as Cotuit’s voluntary restriction and Mashpee’s mandatory ban.

Can the system unite?

Uniting all of the region’s public water suppliers under a single umbrella is almost certainly unrealistic, but both Brown and Faley believe grouping communities by lens would prove beneficial.

However, both officials also point out that the challenges facing any sort of unification extend beyond geographical constraints and into permitting and contracts.

What is a water supplier?

A water supplier, which could be either a municipal or a private entity, contracts with the town to maintain and deliver water. In turn, it holds a contract with the state which sets guidelines for testing and use. Some towns, such as Barnstable, have multiple separate water suppliers.

Water suppliers determine restrictions independently, which partially explains the discrepancies between neighboring communities.

What is a water withdrawal permit?

Another piece of the puzzle is water withdrawal permits. Withdrawal permits determine how much water a supplier can draw from the aquifer each year.

The withdrawal limit varies depending on the permit, which, combined with differing water levels between neighborhoods, leads to the patchwork of different restrictions seen on the Cape.

“Each public water supply has a registered permit or registered withdrawal and/or a Water Management Act permit with the State of Massachusetts,” Brown said.

“Without that permit, really you can’t pull water from the aquifer,” adds Faley.

Additionally, withdrawal permits include binding conservation restrictions. According to Faley, water suppliers must communicate water conservation enforcement actions to MassDEP within two years of receiving a new permit. The state authority has the power to issue fines to noncompliant communities.

How does supply and demand influence the picture?

Beyond the question of permit allowances, public water providers impose restrictions to ensure the local system’s ability to meet critical needs.

“If everybody wants to water their lawn at over a thousand gallons-an-hour at the same time we just can’t keep up with the demand,” Brown said. “Should there be a fire, we would be hard-pressed to have enough water to put that fire out.”

In other words, public water providers must maintain reliable access to an immediate supply.

Is there enough water on Cape Cod?

Fortunately, the need to secure immediate access does not reflect long-term concerns on the Cape. And, despite the long-term drought, Brown says the region does not face a water shortage at this time.

“There seems to be a fear that we’re running out of water and that’s not really the case,” Brown said.

What are Cape Cod’s current water restrictions?

Ban all non-essential water use:	Ban all non-essential water use several days per week:	Voluntary restrictions:
Falmouth Mashpee Orleans Provincetown Yarmouth	Brewster Chatham Dennis Harwich Hyannis	Bourne Cotuit Sandwich Osterville/Centerville/ Marstons Mills

Read and watch more!

More coverage from our drought series!
	Part 1 – Is Cape Cod really in drought? Click here to read and view what drought means in Massachusetts and how the Cape is unique.
	Part 2 – Understanding Cape Cod’s water restrictions Click here to read and view details on Cape Cod water restrictions.
	Part 3 – Cape Cod’s patchwork of water management Click, read, and watch here to learn about aquifer lenses, water withdrawal permits, and more challenges to the Cape’s water supply.
	Let’s Talk Nature Column Click here to read and listen to horticulturist Shannon Goheen on a plant-eye view of drought.

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Categories: Cape Cod Regional Reporting, Coast, Climate, and Environment, Policy + PoliticsTags: drought, regionalization, Water, water restrictions