Mandatory Water Restrictions FAQs

Water Restrictions for Aquarion’s Hingham-Hull-North Cohasset System

Frequently Asked Questions

1. Why is Aquarion implementing water restriction measures?

Massachusetts Department of Environmental Protection (MassDEP) regulatory limits on the amount of water Aquarion is allowed to withdraw from its wells and reservoir have led the company to impose summertime restrictions on outside watering and irrigation in Hingham, Hull and North Cohasset.   The company must abide by the annual limit on the amount of water withdrawn from its wells and reservoirs in the Weir River Watershed, as authorized by MassDEP.  In consideration of the recent drought and the current state of our water supply system, the company is implementing water restrictions this year to ensure that the annual limit is not exceeded.

2. Who regulates the amount of water that water utilities can withdraw from the environment?

The Massachusetts Department of Environmental Protection (MassDEP) regulates and closely monitors the quantity of water that water utilities withdraw from the environment.

3. When can I water my lawn?

The water restrictions have been established pursuant to Aquarion’s Rules and Regulations, as approved by the Massachusetts Department of Public Utilities. 

The restrictions apply only to irrigation systems and hose-end sprinklers.

Customers with odd number street addresses may only water on Tuesdays and Saturdays, and those with even number street addresses may only water on Wednesdays and Sundays.

On these assigned days, customers are allowed to water before 10 a.m. and after 6 p.m., when evaporation losses will be minimized and more water goes to the plants’ roots.

4. Is hand-held watering allowed?

Yes, hand-held watering is permitted at any time.

5Am I allowed to wash my vehicles or fill a swimming pool?


6. I use my own private well for irrigation; do these restrictions apply to me?

No. The restrictions do not apply to irrigation systems that are supplied with water from a private well.

7. Where can I find information on lawn and garden care?

Visit for tips on lawn and garden care. According to Greenscapes:

  • Grass grows the deepest and healthiest roots with infrequent watering.
  • Watering two days a week is more than adequate to have a beautiful lawn. In fact, research has shown that grass thrives with about an inch of rain a week - some supplied by Mother Nature and the rest by just one watering.

Additional Lawn IrrigationTips:

  • Set your mower at one of the higher cutting heights to help your lawn retain water. Keep your mower blades sharp. Dull blades tear grass and require it to use 40-60% more water to repair itself.
  • Mulch your lawn naturally by letting clippings remain on the lawn. This will help stop water loss.
  • Avoid over-watering by using a rain gauge to tell when your lawn needs water and also to measure how much you’re applying. Generally, turf grasses need about ¾"—1" of water per week. If the forecast calls for rain, hold off on watering.
  • Position your sprinklers to water only the lawn—not driveways, sidewalks, patios, or roads.
  • For irrigation systems: The sprinkler heads should be adjusted so the areas they water don’t overlap. Regularly inspect for leaks and repair them quickly. Equip the system with rain sensors so you don’t waste water by irrigating while it’s raining.
  • When planting new grass, use one of the new drought-resistant grasses.


Water-Smart Landscapes




UCONN - Water Conservation
Practices: Landscape Irrigation


8. Is our community doing anything new with respect to water conservation?

Yes, Aquarion has implemented a new water conservation program for our customers.  We are replacing toilets, shower heads, and faucet aerators for free.  In addition, we are offering a $250 rebate towards an energy efficient clothes water and $2,500 towards alternative landscaping costs for demolishing an automatic irrigation system.  To find out more information and if you are eligible for these benefits please visit our website:

If you need further assistance, please contact:

Aquarion’s Customer Service Department at 1-800-928-3734 or at