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Farrell Plumbing

Plumbing Price Guide

Water Treatment & Filtration: what does it cost?

A clear look at the work, the price factors, and the questions to ask before you approve a plumbing job.

Start With The Price

What will the work cost?

Hardness, chlorine taste, and drinking-water concerns call for different equipment. We start with your water and your goals, then explain what each system actually does.

The work behind the number

Planning range for the reviewed Farrell-supplied carbon filters, softeners and combined systems. These treat different water concerns and are not interchangeable. Installation of equipment you already own and repair of existing equipment are priced separately below.

What can change your price?

  • Whether you need hardness reduction, carbon filtration, drinking-water treatment, or a combination.
  • Household demand, equipment capacity, and the chosen brand or model.
  • Existing plumbing, drain access, power, outdoor protection, and system location.

Completed jobs reviewed

$1,500–$9,000

Farrell-supplied filters, softeners and combination systems

Planning range from reviewed work

13 completed jobs reviewed for this guide. Counts vary by scope. February–September 2026. Reviewed September 16, 2026.

These are historical examples of the work described here. They are not a guaranteed current quote or a price for every job in this category.

You approve a written price before work begins.

Behind The Price

Where this guidance comes from.

Completed jobs reviewed

We reviewed the charged work in completed Housecall Pro jobs, not just job titles. These are selected examples, not a company-wide average. Planning ranges round outward around the reviewed scopes. Recorded discounts and undiscounted service charges help show the budget spread; a past discount is not a current offer. Unrelated work, unselected options and gratuities are excluded. Your written proposal confirms your equipment, work and price. Fourteen treatment records were inspected; one had conflicting installation-status notes and was excluded, leaving 13 usable jobs across installation and repair. The company-supplied planning band covers a $1,500 standalone carbon-filter invoice through a $9,000 combined filtration/softener charge before its $900 discount. The 13-job service review includes smaller subgroups, not 13 of every system.

Scope: Planning range for the reviewed Farrell-supplied carbon filters, softeners and combined systems. These treat different water concerns and are not interchangeable. Installation of equipment you already own and repair of existing equipment are priced separately below.

13 distinct completed jobs reviewed for this guide.

February–September 2026.

Reviewed September 16, 2026.

Planning range from reviewed work.

Who supplies the equipment?

Compare the same work. Installing a unit you already own and providing a new unit with the installation cover different costs.

Water Treatment & Filtration prices by equipment supplier and scope.
Equipment and work Reviewed range
Water treatment supplied and installed Farrell supplies the equipment Carbon filters, softeners and combined systems treat different concerns. Equipment capacity and installation details change the scope. $1,500–$9,000 Planning range 2026
Install treatment equipment you supply You supply the equipment Two softener installations and one under-sink reverse-osmosis installation. Equipment purchase and extensive changes are separate. $500–$900 Planning range 3 reviewed jobs 2026

Different work. Different price.

Farrell-supplied 32,000–48,000 grain softener

$2,178.12–$3,187.50

Three clean completed invoice examples, including recorded discounts. Other jobs added sediment or carbon filtration, piping repairs or relocation.

Farrell-supplied softener with filtration

$4,930–$8,100

Two completed invoice examples for different combinations: a softener/carbon package and a HALO5-plus-softener package. The higher system was $9,000 before its $900 discount.

Farrell-supplied standalone carbon filter

$1,500 example

One completed standalone invoice. Cheaper carbon lines inside larger bundled projects are not standalone installation quotes.

Customer-supplied softener installation

$535.50–$895

Two completed invoice examples. Equipment is yours; one invoice included a discount, and piping/drain routing differed.

Customer-supplied under-sink reverse osmosis

$541 example

One completed installation invoice. You provide the system, faucet, tank and required components. Extensive modifications were excluded.

Softener control-valve rebuild

$562.50 example

One completed repair invoice after a $62.50 discount on a $625 service line. This repairs existing equipment; it is not a new softener.

Larger treatment and plumbing bundles

Compare the full scope

Reviewed jobs sometimes combined equipment with failed-resin cleanup, piping work, fixtures or several filters. We separate those items so a whole-job total is not mistaken for one system.

What changes the price at your property?

  • Whether you need hardness reduction, carbon filtration, drinking-water treatment, or a combination.
  • Household demand, equipment capacity, and the chosen brand or model.
  • Existing plumbing, drain access, power, outdoor protection, and system location.
  • Equipment supplied by Farrell versus equipment you already own.

What the work covers.

  • The equipment and installation scope stated in the selected treatment package.
  • A discussion of what the selected system treats and its ongoing maintenance.

What may be separate.

  • Repiping, relocation, electrical work, and added connections outside the named package.
  • Salt, replacement filters, and future maintenance unless included in a separate agreement.
  • A promise to remove every contaminant; treatment depends on the selected equipment and test results.

Before you approve the work.

Make sure your written proposal explains the diagnosis, the work included, any separate items, and the total price. If something is unclear, ask. We want you to understand your options before you decide.

FAQs

Water Treatment & Filtration pricing questions, answered.

Quick answers from our expert plumbers. Still have a question? Call our team and a real person will pick up.

01 Is a carbon filter the same as a softener?
No. A softener addresses hardness. Carbon filtration serves a different purpose, such as reducing chlorine taste and odor for the selected system. Some homes benefit from both.
02 Can you install a system I buy?
Yes, when the equipment is suitable for the water conditions and installation. Customer-supplied prices cover the stated installation work, not the system purchase. We confirm connections, drainage, power and any added work in the proposal.
03 Why is one softener invoice much higher than another?
Some jobs include more than the softener. Additional filtration, relocation, drain routing or repairs after resin enters the plumbing can change the total. Compare the equipment and each line of work before comparing prices.
04 What will I pay after installation?
That depends on the system. Softeners need salt and maintenance; filtration and reverse-osmosis systems need replacement filters on their specified schedules. Ask us to explain ongoing costs for the model in your proposal.
05 Can I start a filtration quote online?
Yes. Our water filtration quote tool is a starting point. We then confirm your water conditions, household needs, installation details and written price.

Have a more specific question? Contact our team or give us a call.

Straight Answers On Price

Related work. Clearer numbers.

Prices cover the scope described in each guide. Your written estimate confirms the price before work begins.

Water Heater Repair

$100–$850

Residential heater repairs and connection work

Planning range from reviewed work

Completed jobs reviewed

10 completed jobs reviewed for this guide. Counts vary by scope. · January–September 2026

Reviewed September 16, 2026

Read The Cost Guide

General Plumbing

$200–$1,400

Selected fixture repairs and installations

Planning range from reviewed work

Completed jobs reviewed

21 completed jobs reviewed for this guide. Counts vary by scope. · April–September 2026

Reviewed September 16, 2026

Read The Cost Guide

Plumbing Repair

$300–$2,800

Selected pipe and leak-repair projects

Planning range from reviewed work

Reviewed completed-job examples

10 completed jobs reviewed for this guide. Counts vary by scope. · Scheduled July 7–September 8, 2026

Reviewed September 16, 2026

This guide uses the same ten completed jobs as our Leak Repair guide; they are not ten additional projects.

Read The Cost Guide

Understand the work before you approve the price.

Call Farrell Plumbing for a clear conversation about your plumbing problem and the next step toward a written quote.