Roswell, Fulton County, Georgia
Why a Plumber Roswell GA Residents Call Asks Who Your Utility Is First
In most cities the address answers the utility question. In Roswell it does not, and the city is open about why. The Roswell Water Utility states that it serves approximately 5,600 customers, and then states that customers not served by the Roswell Water Utility receive their water service through the Fulton County Water System. Inside one set of city limits there are two water utilities, and the smaller one belongs to the city.
The sewer question is simpler and stranger. The city does not run one. Its own published answer to the question where is my sewer tap located reads, in full, please call the Fulton County Public Works Department, and gives a county telephone number. That is the whole answer. So a Roswell address tells you which city issues your permits and almost nothing about the pipes.
Four Questions the Address Does Not Answer
What You Actually Have to Look Up in Roswell
Who supplies your water
The city utility with about 5,600 customers, or the Fulton County Water System. The city publishes separate leak reporting numbers for each, which is the clearest sign that both are common here.
Who owns the sewer
Fulton County. The city routes the basic question of where your tap is to the county Public Works Department by telephone, and adds nothing of its own.
Whether your system is closed
On city water, low hazard homes already have dual check valves at the meter. That is a checking device, and a checking device closes the system.
Who is responsible if it is
You are. The city states that the relief valve or expansion chamber is the responsibility of the customer, and that it is not responsible for damages occurring within the customer water system.
None of that is hidden. It is simply spread across a water utility page, a plant page, a backflow page and a one-line FAQ answer, and no single document gathers it. The practical consequence is that a household calling about pressure, a bill or a smell may be calling the wrong organisation entirely, and will not find out until somebody asks which utility they are on.
The numbers the city publishes for this are worth writing down. Water leaks and water quality issues on city service go to (770) 641-3707 between 7 a.m. and 4 p.m. Monday to Friday, and to (770) 640-4100 after hours through police dispatch. Fulton County Water customers are given (770) 640-3040. Sewer tap questions go to Fulton County Public Works on (404) 730-7400.
Find Out Before You Need To
How to Establish Who Actually Serves Your Roswell Property
- Look at who bills you for water
The simplest test there is. A City of Roswell utility bill puts you in the roughly 5,600. Anything else and the county is your supplier, whatever the postal address says.
- Check the published city service area map
The city publishes a Roswell Water Utility Service Area document. If a property sits near an edge, that is where to look rather than assuming from the street name.
- Assume the county for anything sewer related
The city runs no sewer utility and refers the question outward. Fulton County Public Works is the starting point for a tap location, a lateral question or a main problem.
- Ask whether a dual check valve is on your meter
On city water and a single or duplex family dwelling on a single meter, the city states it has installed them. That is the fact that determines whether thermal expansion is a live question in your house.
- Then check the expansion side of the water heater
If the system is closed and there is no expansion tank or relief arrangement, the code position the city cites applies and the responsibility is yours. That is a plumbing job, not a utility one.
Doing this at a quiet moment costs nothing. Doing it while standing in a wet utility room, working out which of three telephone numbers to ring, costs a great deal more. Our general treatment of the equipment involved is on the water heater repair page.
Three Classes, Three Devices
How Roswell Sorts Every Customer for Backflow Protection
The city has developed a backflow prevention programme to comply with federal and state law on safe drinking water, aimed at preventing contaminants or pollutants entering the potable system, and it applies to all commercial and residential customers of the Roswell Water Utility. What makes it useful reading is that it publishes the sorting rule rather than just the requirement.
| Class | What the city puts in it | Device required |
|---|---|---|
| High hazard | A facility considered a possible source of contaminants, meaning toxic substances or a health hazard. The city names multi family dwellings, hospitals, doctors and dentists offices, metal plating operations, chemical companies, facilities capable of exerting back pressure on their water tap, and other industrial businesses using toxic substances | A reduced pressure principle backflow prevention assembly, an RPZ, for maximum protection |
| Medium hazard | A facility considered a possible source of pollutants, meaning substances objectionable in nature such as those causing discoloration, odor or taste. The city names grocery stores, restaurants, day care centers, office buildings, any business with an auxiliary water supply, and automatic sprinkler systems | A double check backflow prevention assembly |
| Low hazard | Considered least likely to be a source of contaminant or pollutant. Typically only a single or duplex family dwelling served by a single water meter | The city states it has already installed dual check valves at the meter |
The line worth noticing is that multi family dwellings are in the high hazard class, not the low one. A landlord or a body corporate reading this list is being told an RPZ is the expected level of protection, which is a different conversation from the one a single family homeowner is having.
The other thing worth noticing is what the low hazard row does not say. It does not say no device is needed. It says the city has already fitted one, which changes the hydraulics of the house whether anybody told the owner or not.
A Closed System Has Consequences
The 80 PSI Rule, and Whose Problem the City Says It Is
The city sets this out on the same page and it is the most directly actionable thing on the entire utility site. Where water is heated and stored in a distribution system, or a branch of the system, that has been closed by the installation of a backflow prevention device or any other checking device, an approved auxiliary relief valve or expansion chamber should be installed to limit thermal expansion of the water being heated to not more than 80 PSI no-flow pressure at any fixture on the system.
Three details in that sentence are doing real work. Or any other checking device brings the dual check valve at the meter squarely inside the rule. At any fixture means the limit is not measured at the heater but everywhere. And the city ties the installation to State Plumbing Code Section 1112.8, which is a citation rather than a suggestion.
Then it allocates the duty. The installation shall be the responsibility of the customer. It adds that it is the customer responsibility to determine whether thermal expansion is a possibility, and that the City of Roswell is not responsible for damages occurring within the customer water system. So the utility closed the system, the code sets the limit, and the householder owns both the diagnosis and the fix.
That is the same causal chain our Marietta page records from the opposite direction, where the city installs the device on new installations and explains that this is why thermal expansion applies to retrofits too. Same state code, same physics, two different postures toward the consequence. If a relief valve started weeping after nothing changed in the house, this is the mechanism to look at first.
What to Look For
Signs of a Closed System in a House That Never Had a Device Fitted Indoors
The awkward part of the Roswell arrangement is that the device is at the meter rather than in the house, so nothing inside changed visibly and nobody handed the owner a leaflet. These are the things worth checking, and none of them requires opening anything.
- A temperature and pressure relief valve on the water heater that weeps or discharges after a heating cycle rather than continuously.
- Pressure that reads normal while a tap runs and climbs when everything is shut off, which is the no-flow condition the code language refers to.
- An absence of any expansion tank near the heater in a house on city water with a single meter.
- Toilet fill valves or fixture cartridges failing earlier than they should across the whole house rather than at one fitting.
- A water heater installed before the meter device went in, which is the commonest way a house ends up closed with no expansion provision.
- Banging or knocking that appears after a heating cycle rather than when a valve shuts.
None of that is a diagnosis and this page is not offering one. It is a list of things that point at one mechanism rather than at six, which is worth having before somebody starts replacing parts. A pressure reading taken at a hose bib with a cheap gauge, once with water flowing and once with the house shut down, settles most of it in ten minutes.
The relief valve itself is not the fault when this is the cause, and replacing it does not fix anything. That distinction is the whole reason the mechanism is worth knowing about, and it is covered in general terms on our fixture repair page.
Why the City Runs a Plant At All
A 1935 Plant, a 2016 Replacement, and a Published Business Case
The Roswell Water Treatment Plant is a 6,620 square foot facility completed in 2016, and it replaced an 80 year old counterpart built in 1935. The new plant can produce 3.3 million gallons per day, and the utility maintains 89 miles of distribution waterline mains behind it. Water is pulled from Big Creek and stored in a raw water tank before treatment.
The city publishes the reasoning, which is unusual and useful. The plant is forecast to save the city $11.6 million over a 20 year period through reduced water purchases from Fulton County and reduced costs to repair and refurbish the old equipment. It lists the other benefits as maintaining local control over a key portion of the city water resources, securing future supply by ensuring treatment capacity as the community grows, and allowing Roswell to act as a regional leader in developing additional water resources for the metro Atlanta supply plan.
Read that alongside the customer count and the shape of the city becomes clear. Roswell is not trying to take over water service across its whole territory. It runs a small, modern, deliberately local plant for the customers it has, and buys less from the county as a result.
Soft, and That Is All They Say
The Hardness Answer Is a Band, So This Page Gives a Band
The Consumer Confidence Report addresses hardness directly and then declines to put a number on it. It explains that water hardness measures the amount of dissolved minerals, mainly calcium and magnesium, and states that because Roswell water comes from surface sources in this region, the utility provides soft water with low mineral levels. It places Roswell in the soft band, which its own scale defines as 0 to 50 parts per million as calcium carbonate.
The utility also gives the household consequence in its own words: soft water helps reduce scale buildup and improves the effectiveness of soaps and detergents. That is a genuine plumbing statement from the people who make the water, and it is the reason scale is a smaller story in Roswell than in most cities on this site.
What we are not going to do is turn a band into a figure. A range of 0 to 50 parts per million is not a measurement and converting it to grains per gallon would invent precision the utility did not publish. If a softener or a heater setting depends on the number, test at the tap.
One more thing the utility states plainly, and it is worth recording because it is a compliance claim rather than a marketing one: the Roswell Water Utility has never had a violation of the EPA Lead and Copper regulations. That is a statement about the utility record, not about the plumbing inside any individual house, and the two are different questions.
Awards, With the Disagreement Left In
What the City Claims, and Where Its Own Pages Differ
Roswell publishes a run of water awards, and we are recording them because they are attributed and dated rather than vague. The Water Plant page states that the Water Utility received the Water Distribution Award in 2006, 2009 and 2014 from the Georgia Association of Water Professionals, that the distribution system received the GAWP Gold Award for Water Distribution Systems from 2018 through 2022, and that it earned the Platinum Award for five years of Gold.
The Water Utility page tells a slightly different version. It states that the city has been the recipient, for five years in a row, of the Gold Award given by the Georgia section of the American Water Works Association to treatment plants which meet above all of the state standards for water production, and that because of this continual quality the city was awarded the Platinum award in 2023.
Those are two different awarding bodies, two different subjects, plants against distribution systems, and two different datings of the Platinum. We are printing both rather than picking one, because both are on the city own website and nothing we read reconciles them. If the award matters to a decision you are making, ask the utility directly which body issued which.
Neighbourhoods and Corridors
Where This Applies Across Roswell
The utility split is a matter of the service area map rather than of neighbourhood character, and it does not follow the obvious geography. What is uniform across the whole city is the sewer answer, because Fulton County runs it everywhere inside these limits.
Two boundary notes. The city water utility also does not necessarily stop exactly at the city line, and the published service area document is the thing to check rather than the postal address. And this page is about Roswell in Fulton County, Georgia; there are places called Roswell in other states, and nothing here applies to them. Neighbouring builds sit on our Marietta page and Atlanta page.
Roswell Plumbing Questions, Answered Straight
Two water utilities in one city, a sewer that belongs to the county, a checking device already fitted at the meter, and an 80 PSI limit the city says is your problem.
One of two organisations, and the address does not settle it. The Roswell Water Utility states that it serves approximately 5,600 customers and that customers not served by it receive their water service through the Fulton County Water System. The quickest test is who bills you. The city also publishes a service area document, which is worth checking for a property near an edge.
Fulton County. The city does not operate a sewer utility, and its own published answer to the question of where a sewer tap is located consists of a single instruction to call the Fulton County Public Works Department on (404) 730-7400. If your question is about a lateral, a tap or a main, that is the starting point rather than City Hall.
If you are on city water and yours is a single or duplex family dwelling served by a single water meter, the city states it has installed dual check valves at the meter. That is a checking device on the supply, and it is the reason the thermal expansion question applies to ordinary houses here rather than only to commercial premises.
It is the limit the city publishes for thermal expansion. Where water is heated and stored in a system closed by a backflow prevention device or any other checking device, an approved auxiliary relief valve or expansion chamber should be installed to limit thermal expansion to not more than 80 PSI no-flow pressure at any fixture on the system, in accordance with State Plumbing Code Section 1112.8. Note that the limit applies at any fixture, not only at the heater.
The customer, according to the city, and it says so twice. It states that the installation shall be the responsibility of the customer, that it is the customer responsibility to determine whether thermal expansion is a possibility, and that the City of Roswell is not responsible for damages occurring within the customer water system. So both the diagnosis and the fix sit on the private side of the meter.
It may not be. A relief valve that discharges after a heating cycle rather than continuously is the classic signature of a closed system with nowhere for expanding hot water to go, and in Roswell the system may well be closed at the meter. Replacing the valve does not address that. Check the pressure with everything shut off, and look for whether any expansion provision exists near the heater.
No. The Consumer Confidence Report places Roswell in the soft band, which its own scale defines as 0 to 50 parts per million as calcium carbonate, and states that because the water comes from surface sources in this region the utility provides soft water with low mineral levels, which helps reduce scale buildup and improves the effectiveness of soaps and detergents. The report gives the band and no measured figure, so neither do we.
Water is pulled from Big Creek and stored in a raw water tank before treatment. The Roswell Water Treatment Plant is a 6,620 square foot facility completed in 2016, replacing an 80 year old plant built in 1935, and it can produce 3.3 million gallons per day. The utility maintains 89 miles of distribution waterline mains.
It published the reasoning. The plant is forecast to save the city $11.6 million over a 20 year period through reduced water purchases from Fulton County and reduced costs to repair and refurbish the old equipment. The city also lists maintaining local control over its water resources, securing treatment capacity as the community grows, and supporting the metro Atlanta regional water supply plan.
Not consistently, and we are not going to pick a side. The Water Utility page says approximately 5,600 customers. The Water Plant page says the plant provides water to approximately 5,700 metered customers. Both figures are on the city website and nothing we read reconciles them, so both appear on this page.
Ask Who, Then Ask What
Plumber Roswell GA Work That Starts With the Utility Question
The habit worth building here is boringly simple. Before anything else, establish who supplies the water, and remember the sewer belongs to the county whatever the answer. Then, if you are on city water in an ordinary house, treat the system as closed, because the city says it fitted the dual check itself, and check whether anything on the hot side is set up to absorb the expansion that follows. Those two questions between them explain most of the calls that turn out not to be about the thing the caller thought.
Related work on this site: water heater repair covers the expansion question, leak detection covers finding a loss on the private side, and repiping covers the whole-house case. The state picture sits on our Georgia plumbing page.
Sources for the approximately 5,600 customers, the statement that customers not served by the Roswell Water Utility receive their water service through the Fulton County Water System, the 3,300,000 gallons per day plant capacity, the 89 miles of distribution waterline mains, the leak reporting numbers including the Fulton County Water customer line, and the five consecutive Gold Awards attributed to the Georgia section of the American Water Works Association with the Platinum dated to 2023: the City of Roswell Water Utility page.
Sources for the 6,620 square foot plant completed in 2016, the 80 year old plant built in 1935 that it replaced, the 3.3 million gallons per day figure, the approximately 5,700 metered customers, the $11.6 million forecast saving over 20 years through reduced water purchases from Fulton County, the local control and regional leadership reasoning, and the Georgia Association of Water Professionals Water Distribution Awards of 2006, 2009 and 2014 with the Gold run from 2018 through 2022 and the Platinum for five years of Gold: the City of Roswell Water Plant page. The two customer figures and the two award accounts are printed here unreconciled because the city publishes both.
Sources for the backflow prevention programme and its federal and state law basis, the application to all commercial and residential customers of the city water utility, the high, medium and low hazard definitions with their named examples, the RPZ and double check assembly requirements, and the statement that the city has installed dual check valves at the meter on low hazard properties: the City of Roswell Backflow Prevention page.
The same page is the source for the thermal expansion statement, including the closure of a system by a backflow prevention device or any other checking device, the approved auxiliary relief valve or expansion chamber, the limit of not more than 80 PSI no-flow pressure at any fixture on the system, the citation of State Plumbing Code Section 1112.8, the allocation of that installation to the customer, and the statements that determining whether thermal expansion is a possibility is the customer responsibility and that the City of Roswell is not responsible for damages occurring within the customer water system.
The instruction to call the Fulton County Public Works Department on (404) 730-7400 for the location of a sewer tap is the entirety of the city published answer to that question in its own FAQ. The hardness band, the description of Roswell water as soft with low mineral levels because it comes from surface sources in this region, the statement that this helps reduce scale buildup and improves the effectiveness of soaps and detergents, and and the Big Creek raw water source come from the City of Roswell Water Quality and Consumer Confidence Report.
The statement that the utility has never had a violation of the EPA Lead and Copper regulations comes from the city Lead and Copper FAQ.
NO HARDNESS FIGURE IN PARTS PER MILLION OR GRAINS PER GALLON IS STATED, because the Consumer Confidence Report publishes a band and not a measurement, and converting a band into a figure would invent precision the utility did not publish. No water rate, sewer rate or permit fee is quoted, because no rate or fee schedule was opened. No Fulton County rule, system size, customer count or plant detail is stated, because the county site was not fetched for this page. No proportion of Roswell households on city water is calculated, because the city publishes a customer count and not a population base. No lead service line count is stated.
The Roswell Water Utility Master Plan and the Source Water Assessment Plan are named on this page because the city names them, and their contents are not summarised here because neither document was opened.
This page concerns Roswell, Fulton County, Georgia. No response time, crew count, office or address of ours is stated for Roswell, and no coverage claim is made beyond what our Georgia page already sets out. Programmes, contact numbers, code references and utility boundaries change, so confirm current requirements with the City of Roswell and with Fulton County before relying on anything above.