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Keeping Your Water Clean

Protecting Pennsylvania Waterways and the Chesapeake Bay

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  • Old Lycoming Township - Water Main Shut Down 10/5/2022

    The Williamsport Municipal Water Authority is informing our customers that we will be shutting down water service in Old Lycoming Township north of Mill Lane, east of State Route 15 and south of Lycoming Creek. The shut-down is scheduled for Wednesday, October 5, between the hours of 8 AM and 4 PM. Please see the map for the area effected. We apologize for the inconvenience this may cause and thank you for your patience.

  • Notice of Public Meetings Williamsport Sanitary Authority


    Stormwater Program and Fee Implementation
    For the City of Williamsport

    Wednesday, September 14, 2022

    Trade and Transit Centre II - 144 W. Third St. 4:00 pm and 7:00 pm

    Stormwater infrastructure and services are critical to protecting lives, property, commerce, and the quality of our local and national waterways. The City's stormwater infrastructure however, is under increasing stress due to age, development, and expanding regulatory requirements. The Williamsport Sanitary Authority (WSA) is tasked with maintaining and improving the system to assure proper function and to meet stringent regulations required by state regulatory agencies. Customers are encouraged to attend a public meeting hosted by the WSA to be held on Wednesday, September 14, 2022 to learn more about the proactive stormwater management plan including its goals, costs, and billing method. The 4:00 pm meeting will focus on business, industry, and non-profit customers and the 7:00 pm meeting will focus on residential customers.

  • Shut Down Notice

    The Williamsport Municipal Water Authority is informing our customers that water service may be interrupted between 7 AM and 3 PM on September 7th in The City of Williamsport South of West Fourth Street, North of Linn Street, East of Prospect Ave, and West of McMinn Ave. Please see the map for the area effected. We apologize for the inconvenience this may cause and thank you for your patience.

  • Managing Swimming Pool Water

    Before You Drain Your Swimming Pool. Know the Rules!

    Another summer has come and gone, and now it’s time to close that swimming pool or hot tub.  Before you extend that hose, remember, the water is filled with chemicals!  Here are some helpful tips on how to properly close swimming pools and hot tubs for the year.  Whether you’re a private owner, manage a public pool, or work for a pool maintenance company, these reminders are for you!

    Discharged pool water and water containing chlorine or other chemicals can be detrimental to aquatic life if not handled correctly.  These waters must not be discharged to any storm sewer.

    When draining a swimming pool or hot tub, make sure to protect Pennsylvania’s water ways by following these tips:

    Never dispose of pool water through a storm sewer! Pool water should not be discharged into the street. Pool water should be discharged slowly into the grass where it will allow for absorption, filtration, and aeration of the water through the soil.  By draining the pool at a slow and steady rate, filtration will be optimized and erosion will be prevented.  When draining pool water into the grass, be attentive so that the water does not drain onto a neighboring property. Pool water may be disposed of through sanitary sewer system, laundry sink or other plumbing fixture as long as there is no detectable chlorine. 

    A factsheet from the Pennsylvania Department of Environmental Protection (DEP) at the link below:

    If you have any questions please contact the WSA at 570-323-6148 and dial 2.

  • Lead and Copper Testing Overview

    Every three years, the Williamsport Municipal Water Authority (WMWA) is required by the U.S. Environmental Protection Agency’s Lead and Copper Rule to conduct a lead and copper survey of our drinking water system.

    Lead and copper enter drinking water mainly from the corrosion of plumbing materials that contain lead and copper. When water comes in contact with lead pipes or lead solder, leaching of lead may occur. This reaction is called corrosion. Corrosion is more likely to occur if the water contains high dissolved oxygen, low pH (acidic), and low mineral content. The WMWA has an active and extensive corrosion control program in place in order to prevent corrosion from occurring in its distribution system.

    The most recent study was completed in August 2022 and measured lead and copper concentrations in water collected from customers’ taps throughout WMWA’s distribution area. Results show that the WMWA’s water quality continues to meet all State and Federal standards.

    All results except for one were below the EPA action level for lead, and all samples were below the EPA’s action level for copper. These results support the effectiveness of the WMWA corrosion control program. 90th Percentile Lead Results for each required sampling event can be seen on the graph below, showing that lead concentrations continue to be reported below the action level of 15 parts per billion for lead.

    More information about Drinking Water and Lead can be found on our website at


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  • Employment Opportunities

    water treatment plant

    The WSA is accepting applications for an Assistant Superintendent at our Central Plant location and a Director Finance at our main office. Click the Learn More button for more information.

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Have an Emergency?

We understand emergencies happen and we’re always here to help. Please contact us immediately (24 hours a day, 7 days a week) at 570-323-6148

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Advisory Notices

Get Up To The Minute Information from the Williamsport Municipal Water Authority and Williamsport Sanitary Authority.

Advisory Notices
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Frequently Asked Questions

We can answer many of your questions right here. Look through both the Water and Sanitary Authorities FAQ’s to see if you can find your answer here first.

Frequently Asked Questions


The Williamsport Municipal Water & Sanitary Authority has partnered with HomeServe to offer you affordable emergency repair plans that can help protect against costly and inconvenient repairs.

HomeServe Home repair plans now available