In our Water Treatment and Radon Mitigation Library, you will find articles, videos and links that provide information on everything to do with water treatment and radon mitigation. We have information on wells, locating wells, sizing systems, treating water and radon mitigation. We specialize in providing water treatment for problems like arsenic, uranium and radon. We also know how to integrate our systems with low yield well systems, fire suppression systems and geothermal systems. Take your time and browse around. Air & Water Quality is where you will find Maine’s water treatment experts. If you don’t find what you are looking for in our water treatment and radon mitigation library, contact us.
Overview: Reverse osmosis (RO) systems remove dissolved solids from water. The more dissolved solids water contains the better it conducts electricity. A TDS (total dissolved solids) monitor measures how well the water conducts electricity and therefore can determine the total concentration of dissolved solids in the water. This measurement is expressed as milligram… Read more »
PLEASE READ THROUGH INSTRUCTIONS BEFORE BEGINNING Materials – Unscented Clorox bleach – Well Sanitizing Tablets (drilled wells only) – Hose to reach from well to closest outside faucet – Wrench to remove well cap, pool test kit(to detect chlorine) 1. By-pass water treatment equipment if any. 2. Determine the well water depth &… Read more »
EPA Paper – water softeners and septic systems
Directions for Changing Cartridge Filters Shut off the water on both sides of the cartridge filter housing by turning off the valve on the pipe leading into the filter housing and then turning off the valve on the pipe returning to the house. Both of these valves are labeled “Close to By-pass”. Place… Read more »
Once you have decided to purchase a Reverse Osmosis(RO) system that will provide all the water in the house, you will need to answer the following questions. How much water do I need? To size an RO, you must first determine your water requirements. Most people use between 50 and 75 gallons of water… Read more »
What types of bacteria are tested? The most common bacteria tests detect coliform bacteria. There are many types of coliform bacteria. Coliform bacteria by itself is generally not a health issue. However, the presence of coliform bacteria is an indication that the water source has decaying organic material in it. And the presence of… Read more »
When testing your water for bacteria, it important to sanitize the faucet. This will ensure the water sample represents the quality of the water in the well and not the amount of bacteria on the faucet tip. Be sure the collected sample will reach the lab within 30 hours, or else it will be… Read more »
Once you have decided that you would like to purchase an RO system, you will need to learn and understand some new terms and concepts in order to compare various systems that you may be offered. You should also ask your sales person the following questions: Will the unit remove the contaminants I… Read more »
Introduction A process called oxidation filtration is a common method used to remove iron, manganese and hydrogen sulfide (egg odor) from the drinking water. This process first introduces an oxidant to convert the un-filterable dissolved contaminants to particles that can be filtered by a granular media. Some of these systems use air to provide… Read more »
Introduction Air & Water Quality (AWQ) has installed many ultra violet (UV) systems and chlorination systems. We have investigated both techniques for the purposes of primary disinfection. We have considered the following key points when deciding the best approach. Key points Coliform bacteria are found in or on all living and decaying organic matter…. Read more »
This document can assist you in troubleshooting your water softener. Most of the time, the only problem is an incorrectly set clock due to power outages. The clock on the softener needs to be set for the current time of day. If you read through the question and answer section below, you can determine… Read more »
There are four things to consider when buying a softener: The qualifications, reputation, experience and the service of the company that will care for you and your new purchase. The type of softener you want to purchase. The type of regeneration, co-current or counter current. The softener’s certification. Qualifications, reputation, experience, and service We… Read more »
The EPA has set the maximum contamination level (MCL) for uranium at 30 ug/L (parts per billion). Although uranium is radioactive, the MCL was set based on its chemical toxicity. At elevated concentrations, uranium affects kidney function and can cause cancer. Uranium in drinking water is odorless, tasteless and colorless. The only way… Read more »
Introduction Wells drilled directly into bedrock tend to be low yield wells. Peak demands can require more water than the well can provide. This article describes possible options and issues to consider when choosing a solution to a low yield well. You have three options if you don’t have enough water. The options are… Read more »
Introduction Medicinal odor is one of the most difficult water problems to solve. The medicinal odor is classic for a group of compounds called phenols. It can be described by the well owner as smelling like mouth wash (Listerine), band-aides, aromatic cedar or just medicine like. At low concentrations, the phenol odor can also… Read more »
We are often faced with sales situations in which we are told that our competitor’s proposed RO system is the same as ours. This is definitely not true! So let’s take a look at this claim. History of Reverse Osmosis Systems We have been installing whole house reverse osmosis systems for close to a… Read more »
Testing for Arsenic in Water Arsenic in drinking water is odorless, tasteless and colorless. The only way to tell if arsenic is present is to test for it. We recommend using a state certified lab. We also recommend a minimum of two tests to confirm the concentrations. Even if the initial test is low,… Read more »
We often get asked, “Can you fix my low water pressure?” The answer is always yes, however, the solution may require anything from the simple adjustment of the pressure switch to the replacement of pumps, plumbing and or fixtures. To know what to do, you must first determine if the problem is low pressure… Read more »
The real cost of bottled water A family of 4 uses about 500 gallons of drinking water each year. The cost of bottled water bought in 24 to 28 count cases costs anywhere between $0.33 and $0.43 per quart. At $0.38 per quart the cost of water for 10 years is: $.38 X… Read more »
Introduction Most corrosion problems show up as blue green staining. The stain is copper deposited from the corrosion of the water piping and fixtures. The corrosion will eventually cause pinhole leaks in the water pipes. There can be a number of causes for the corrosion. The most likely cause is low alkalinity, which… Read more »
FIRE SUPPRESSION SYSTEMS – Why does it matter for water treatment? Introduction Some residential fire suppression systems are designed to be part of the potable water system. They require the potable water system to produce a flow that will be adequate for the suppression system. Standalone potable water systems are typically designed for… Read more »
EPA guidelines on radon information and mitigation
EPA has produced this document for those purchasing a new home and that needs radon mitigation
EPA Document – Protecting your family from radon
Introduction There are three general types of aeration systems presently available; they are: Shallow Tray aeration, diffuse bubble, and re-spray units. This article will not address the re-spray technology because its removal efficiency is low compared to Shallow Tray or diffuse bubble, and therefore has a more limited use. Both the Shallow Tray and… Read more »
Radon can enter a building via three pathways. The most significant is usually through soil gas intrusion. Another entry, which can be significant, is the release from water when it is exposed to the air in the building. For water radon to be a significant radon source, there must be elevated concentrations of radon… Read more »
Links to Water and Radon Information
Environmental Safety & Hygiene Associates, LLC – ESHA is a professional air quality and testing firm based in Cumberland, Maine, that offers a wide variety of environmental testing services with common sense solutions. Their specialists have over 20 years of experience in asbestos, lead, mold, air quality and industrial hygiene. We highly recommend Mark Coleman and his team.
A & L Laboratory Inc. – A & L Laboratory Inc. was established in 1976 to provide testing services to analyze drinking water to ensure a safe potable water for current and future generations. Through the years they have performed work for over two hundred thousand customers and analyzed over 2 million parameters. They offer a wide range of services to meet every clients needs.
Water Systems Council – Well Care Info Sheets – Founded in 1932, the Water Systems Council (WSC) is the only national nonprofit organization with programs solely focused on the private water wells and small, shared wells serving more than 43 million Americans nationwide. This resource has an impressive amount of information on all topics related to private wells.
Rolfe’s Well Drilling – Rolfe Well Drilling has over 45 years of experience serving all of Maine. We provide the water pump systems, installation, and customer service from well to in the home. We handle everything from site inspection, water testing, drilling, to installation. Call us for a free estimate today!
Maximum Exposure Guideline (MEG) table from the State of Maine -This is a link to the State of Maine site for you to get the latest list of water contaminants and the State of Maine MEG for these water contaminants.
Maximum Contaminant Level (MCL) table from the EPA -This is a link to the EPA site for you to get the latest list of water contaminants and the EPA MCL for these water contaminants.
…Seawater Intrusion Affecting Ground Water…. – If you live near the ocean and have salt water in your well, this USGS paper will explain what is happening. To view a short excerpt from this, click here and find some suggestion that may help you solve you salt water problems.
Northeast Environmental Lab – NEL offers complete laboratory services including environmental testing and analysis in chemistry and microbiology as well as custom and standard media manufacturing services.
Hansen’s Well Drilling – Hansen’s Well Drilling, Inc. is a third- generation, family-owned and operated company that drills wells, installs pump systems and performs hydro fracturing. We are fully insured, Maine licensed and nationally certified.
Reilly Well Drilling – Reilly Well Drilling has been serving Lincoln, Knox, Waldo, Kennebec and Sagadahoc counties for over 30 years. Reilly Well Drilling offers service and repair on all makes of submersible pumps and other well components.