Customer Service

Contact Us:

Our customer service support staff can provide technical help for an application, answer your questions, provide estimates, and process orders.
Give us a call Monday-Friday 9:00 am – 5:00 pm EST

Phone: 410-744-9040
Fax: 410-744-6062

Contact Information

* Required Fields


Ordering Information:

Order Online

Shop direct through our Online Store
If you don’t see what you need, submit a quote form with the application requirements.

We accept Visa, MasterCard, American Express, and purchase orders (with approved credit). Our Customer Service Representatives will give your order prompt attention. All credit card processing will be billed through Whel Tech Inc.   

Order by Phone or Fax, Monday-Friday 9:00 am – 5:00 pm EST

Phone: 410-744-9040
Fax: 410-744-6062

Order by Mail

2 Forest Drive
Catonsville, MD 21228

Sales Tax

We only charge sales tax for orders shipped to Maryland, unless a tax exemption certificate is presented. Per the Internet Tax Freedom Act, remote sellers are generally required to collect taxes where there is a physical selling presence. The App4Water physical location is in Maryland so tax is only collected when a product is shipped to Maryland. 


Our Shipping headquarters is located at:

2 Forest Drive
Catonsville, MD 21228



Privacy Policy

Email and personal information:
Protecting your privacy is an important priority at App4Water and we are committed to maintaining privacy protections. We will not, without your permission, sell, publish, or share your personal information to anyone unless mandated by a court of law. We use this information to provide services and to contact you about your order. We occasionally send emails about promotions and new products, which includes an automated way for you to stop emails if you choose.

We comply with the law and transmit, store, protect, and access all information in compliance with the Industry’s Data Security Standards. Your sensitive information is sent securely and stored directly on our server.

Please contact us if you feel we are not following our information policy.

Return and Warranty Policies:

Return Policy:
App4Water will accept, for exchange or return, only items purchased directly from App4Water purchased within the last 30 days. The product needs to be in it’s original packaging when returned. All returns must be authorized by App4Water. Restocking fees will apply.

Restocking Fee:
For a standard stock item, the restocking charge for items purchased within the last 30 days is $25 or 25% of list price for orders over $100. Special order items will be handled on a case by case basis but may be assessed a 50% administrative restocking fee. Items returned for credit or exchange must be in their original unopened packaging. After the return is inspected, a credit will be issued at the discretion of App4Water.

Unauthorized Returns:
If a customer refuses delivery of an order or returns an order without a prior Return Authorization, the customer will be charged both inbound and outbound shipping charges.

RMA Procedure: 
A Return Material Authorization (RMA) is required for all returns!
Please call or email the sales department for an RMA number or fill out and submit our online RMA form. If returning the item for credit or exchange, include an original copy of the sales order. All damaged items must be handled through the shipping carrier. Please contact our sales department if you have any further questions.

Items purchased within the last 12 months will have an in house evaluation to determine repair costs. Upon completion of our evaluation, we will advise the customer of repair charges and request a purchase order. We will not accept any equipment that has been exposed to any hazardous environments e.g. chemicals, sewage, etc.

Warranty Policy:
Subject to the terms of the warranty for each manufacturer, we will replace/repair any items found to be defective in materials and workmanship. All defective items must be returned with shipping pre-paid to us, using an RMA number. Please contact App4Water with your original order date, your account number the product number, and a brief description of the warranty claim.


  • American Water Works Association
  • Chesapeake Water Enviroment Assocaition
  • Environmental Protection Agency
  • National Rural Water Association
  • Water Enviroment Federation
  • Water Quality Association
  • Whel-Tech