If you’re dealing with an emergency repair in Los Angeles, Orange County, San Diego, or the Inland Empire, here’s what you need to know about same-day chlorination service and why getting it right matters.

Why Chlorination Is Required After Emergency Repairs

When a waterline is opened — whether for a repair, a replacement, or a break — the interior of the pipe is exposed to the surrounding soil, air, and potential contaminants. Bacteria, sediment, and debris can enter the line, making the water unsafe even after pressure is restored.

California law and local water authority requirements mandate that any repaired or replaced potable waterline must be disinfected before it’s returned to service. This isn’t optional. Whether you’re a property owner, a general contractor, or a plumber, skipping chlorination can result in:

• Failed water quality tests
• Health department violations
• Liability for waterborne illness
• Project delays and costly re-inspections

For emergency repairs — where speed is critical — the challenge is finding a licensed chlorination contractor who can respond the same day and complete the process correctly the first time.

What Qualifies as an Emergency?

Not every repair situation is an emergency, but several common scenarios require fast turnaround on chlorination:

1. Burst or Broken Water Mains

When a main line fails due to age, ground movement, or pressure surges, the repair has to happen immediately. Once the pipe is fixed, chlorination must follow before water service can be safely restored — especially for multi-unit residential buildings, commercial properties, or HOAs where dozens of residents may be waiting.

2. Emergency New Service Connections

Sometimes a new service line gets pushed through under emergency conditions — a project that stalled, a permit that came through fast, or a developer working against a tight deadline. Same-day chlorination gets the line approved and water flowing without losing another day to scheduling.

3. Contamination Events

If a cross-connection, backflow incident, or sewage intrusion compromises a waterline, chlorination becomes part of the remediation process. In these cases, health authorities may require chlorination documentation as part of restoring service — and fast.

4. Failed Chlorination That Needs a Re-Test

If a prior chlorination attempt failed the bacteriological sample — which does happen — you need a crew that can return quickly, re-treat the line, and re-sample before the window closes. Re-tests add cost and delay; having a contractor who gets it right the first time matters.

What Same-Day Chlorination Actually Looks Like

Emergency chlorination follows the same process as a standard job — the difference is the timeline. Here’s how it works:

Step 1: Pre-flush and pressure check

The line is flushed to remove visible sediment and debris. Water pressure is confirmed and any leaks are resolved before treatment begins.

Step 2: Chlorine injection

A chlorine solution — typically sodium hypochlorite — is introduced into the line at the correct concentration per AWWA C651 standards. The line is charged with treated water and held for the required contact time.

Step 3: Contact time and hold period

For most jurisdictions, this means a minimum chlorine residual must be maintained for a set period — commonly several hours. This isn’t something that can be rushed. A contractor who tells you they can skip the hold time is cutting corners that will likely result in a failed test.

Step 4: Flushing and dechlorination

After the hold period, the line is flushed with fresh water. In many California jurisdictions, the discharge must be neutralized before it enters the storm drain. A licensed contractor handles this properly to avoid environmental violations.

Step 5: Bacteriological sampling

Water samples are pulled and sent to a certified lab. Most labs offer standard 24–48 hour results. Some situations may allow for expedited results.

How Fast Can You Actually Get Service?

Cal-Backflow serves Los Angeles, Orange County, San Diego, Riverside, and San Bernardino counties. For emergency chlorination requests, we do our best to mobilize same day — especially for commercial properties, HOAs, and contractors who can’t afford to leave a project idle.

The earlier you call, the better. Morning calls almost always result in same-day service. Afternoon emergencies may roll to first thing the following morning depending on crew availability.

When you call, have this information ready:

• Location and address
• Pipe size and approximate footage
• Nature of the repair (burst main, new service, contamination, etc.)
• Water authority jurisdiction (City of LA, LADWP, SDCWA, etc.)
• Who to coordinate with on site (plumber, GC, or property manager)

This lets us dispatch the right crew with the right equipment the first time.

Why It Pays to Use a Specialist

General plumbers can repair the line. Not all of them are set up to handle chlorination — and some who try aren’t familiar with local water authority documentation requirements or AWWA standards.

A specialist chlorination contractor brings:

• Proper chemical handling and dosing equipment
• Familiarity with local jurisdiction requirements (what LADWP requires differs from what San Diego County Water Authority requires)
• Lab coordination for fast and accurate sampling
• Documentation that satisfies the water authority and protects you if questions come up later

When an emergency repair is on the line, this isn’t the place to learn on the job.

Get Same-Day Emergency Chlorination

Cal-Backflow provides emergency waterline chlorination across Southern California, including Los Angeles, Long Beach, Orange County, Riverside, San Bernardino, and San Diego. We work directly with plumbers, general contractors, HOAs, and property managers to get lines cleared and approved fast.

Call us today if you need same-day service. We’ll assess your situation, give you an honest timeline, and get a crew out.

Contact Cal-Backflow →

The post Emergency Waterline Repairs: When You Need Same-Day Chlorination appeared first on California Backflow & Chlorination .

At California Backflow & Chlorination, we work with property managers, HOA boards, general contractors, and plumbing companies across Orange County every week. This guide covers what you need to know about chlorination services for larger residential properties — and how to make sure the process goes smoothly.

Why Chlorination Is Required for Multi-Family Properties

When new water lines are installed, repaired, or disturbed on any property, they can become contaminated with bacteria, sediment, or debris. In a single-family home, this is manageable. In a complex with dozens or hundreds of units sharing the same plumbing infrastructure, it becomes a public health issue.

California’s Department of Public Health and local agencies throughout Orange County — including the Orange County Water District and individual municipal water purveyors — typically require waterline chlorination before a new or repaired line is activated. This requirement applies to:

• New construction apartment complexes, condos, and townhome developments
• HOA communities with shared water infrastructure
• Multi-family properties undergoing plumbing renovations or repairs
• Properties where waterlines have been disconnected for any reason and need to be recommissioned

Failure to chlorinate — or chlorinating incorrectly — can result in failed water quality tests, project delays, or health risks for residents. That’s why it’s critical to use a licensed contractor with real experience in multi-unit chlorination.

What Makes HOA and Multi-Family Chlorination Different

Chlorinating a single water line for one house is straightforward. Chlorinating a shared plumbing system for a 200-unit HOA in Anaheim or a new apartment complex in Irvine is an entirely different job.

Here’s what makes large-scale chlorination more complex:

Multiple points of entry and isolation. Larger systems often require isolating sections, flushing individual laterals, and ensuring every line segment receives adequate contact time with the chlorine solution. Miss a section, and you’ll fail the final water quality test.

Higher water volumes. More pipe means more water to treat, more chlorine to calculate correctly, and more dechlorination discharge to manage. California requires proper neutralization of chlorinated water before it can be released to the storm drain or sewer system — this is regulated by the Department of Pesticide Regulation (DPR), and not every contractor has the licensing to handle it.

Coordination with multiple stakeholders. HOA boards, property managers, general contractors, the water purveyor, and sometimes local health departments are all involved. You need a chlorination crew that shows up on time, communicates clearly, and documents everything.

Resident considerations. Residents need to know when water will be shut off, how long it will be out, and when it’s safe to use again. A professional crew makes this easy. A disorganized one creates complaints and delays.

Chlorination Services We Provide in Orange County

California Backflow & Chlorination serves HOAs and multi-family properties throughout Orange County, including:

• Anaheim
• Irvine
• Santa Ana
• Huntington Beach
• Costa Mesa
• Fullerton
• Orange
• Yorba Linda
• Garden Grove
• Tustin

Our services include full waterline chlorination, dechlorination and neutralization, flushing, and coordination with your water purveyor for final testing and approval. We’re a licensed C-36 Plumbing Contractor (CSLB #1117687) and hold DPR licensing for chlorination work — which is legally required for anyone applying chlorine to a water system in California, as it’s classified as a microbial pesticide application.

We also provide backflow testing and installation for properties that need it, so you can handle multiple compliance items in one visit.

How the Process Works

For most HOA and multi-family chlorination jobs, here’s what to expect:

1. Site assessment — We review the scope of work, identify the water lines to be treated, and coordinate with the general contractor or property manager.
2. Pre-flush — Lines are flushed to remove debris before chlorination begins.
3. Chlorination — We introduce a chlorine solution at the correct concentration and ensure adequate contact time per California standards.
4. Dechlorination and disposal — All chlorinated water is properly neutralized before discharge. This step is legally required and often overlooked by under-licensed contractors.
5. Water quality testing — Samples are collected and sent to a certified lab. Results typically come back within 24–48 hours.
6. Final sign-off — Once the water purveyor receives passing test results, the system is approved for use.

Timelines vary based on the size of the system and how quickly the water purveyor processes results, but most jobs are completed within 1–3 days. Read our full post on chlorination timelines for more detail.

Getting a Quote

If you’re a property manager, HOA board member, or general contractor working on a project in Orange County, we’re easy to work with. We respond quickly, show up when we say we will, and handle the paperwork. That’s the job.

Call us or fill out the contact form on our website to get a quote. We service all of Orange County as well as Los Angeles, Long Beach, San Diego, and the Inland Empire.

California Backflow & Chlorination
Licensed C-36 Contractor | CSLB #1117687
cal-backflow.com | Contact Us

The post Chlorination Services for HOAs and Multi-Family Properties in Orange County appeared first on California Backflow & Chlorination .

The short answer: most chlorination jobs are completed within 4 to 8 hours, but the full process — from initial flush to final clearance testing — can stretch over 24 to 48 hours depending on the scope of the project and local agency requirements. Here’s everything you need to know so you can plan accordingly and avoid surprises.

The Chlorination Process: A Step-by-Step Timeline

Understanding the timeline means understanding the process. Waterline chlorination isn’t just pouring bleach into a pipe — it’s a regulated procedure with specific hold times and sampling requirements mandated by the California Department of Public Health (CDPH) and local water agencies.

Step 1: Initial Flush (30–60 minutes)

Before chlorination begins, the line needs to be flushed to remove debris, sediment, and air pockets. For a standard residential line, this takes 30 to 60 minutes. On larger commercial or multi-family properties with longer pipe runs, expect this stage to take longer.

Step 2: Chlorine Introduction and Contact Time (minimum 24 hours)

Once flushed, a chlorine solution is introduced to the line at a concentration typically between 25–50 mg/L (parts per million). After the solution fills the entire pipe, the contact time begins — this is the required soak period.

For most jurisdictions in Los Angeles County, Orange County, and San Diego, the minimum contact time is 24 hours. Some agencies require up to 48 hours, especially for larger-diameter mains or lines that have had contamination issues.

This is the step that drives most of the project timeline. There’s no shortcut here — the water agency sets the rules, and we follow them.

Step 3: Second Flush (30–90 minutes)

After the contact period, the chlorinated water is flushed from the system. For a small residential line, this can be done in under an hour. For a commercial property or multi-family complex with multiple units and fixtures, this stage takes longer and requires coordination to make sure every section of pipe is properly cleared.

Step 4: Bacteriological Sampling

Once the line is flushed, bacteriological samples are pulled from the line and sent to a certified lab. Lab turnaround is typically 24 hours, though some labs offer same-day or next-day results for an added fee.

If the samples come back clean, the line gets a clearance letter and can be placed into service. If they fail, the chlorination process starts over.

Total Timeline: What to Realistically Expect

Most property managers can plan on 2 to 3 business days from start to final clearance for a standard job. If you’re on a tight construction schedule or a tenant is waiting to move in, communicate early — this isn’t a same-day service in most cases.

What Factors Affect the Timeline?

Several variables can lengthen (or tighten) the schedule:

Pipe diameter and length. A 3/4-inch residential service line clears much faster than a 4-inch main feeding 50 units. More volume means more chlorine, more flush time, and sometimes more sample points.

Local water agency requirements. Every municipality has its own standards. The City of Los Angeles, Long Beach Water Department, Metropolitan Water District, and San Diego County Water Authority all have slightly different protocols. We’re familiar with all of them across Southern California and can tell you exactly what to expect in your area before we start.

Lab turnaround time. Standard lab results take 24 hours. If your project is time-sensitive, we can discuss expedited options.

Pass/fail on samples. First-pass failure extends the timeline by at least 2 days. This is relatively rare when the job is done right, but it does happen — especially on older lines or if there was significant contamination.

Access and coordination. On multi-family properties and commercial buildings, coordinating access for flushing (especially hitting every unit or fixture) adds time. The more organized your property team, the smoother this goes.

Tips for Property Managers

Schedule ahead of construction milestones. Don’t wait until the day of your final inspection to call for chlorination. Build 3–4 days of buffer into your timeline.

Notify tenants early. On occupied properties, a chlorination job may require temporary water shutoffs. Give residents at least 24–48 hours notice.

Confirm permit and inspection requirements. In most Southern California jurisdictions, chlorination is required and documented as part of the permit closeout process. Ask your contractor to confirm what’s needed in your specific city or county.

Work with a licensed contractor. Waterline chlorination in California must be performed by a licensed plumbing or C-34 contractor. It’s not a DIY job, and cutting corners can result in failed inspections, code violations, or — worse — a public health issue.

Serving Property Managers Throughout Southern California

California Backflow & Chlorination provides waterline chlorination services throughout Los Angeles, Orange County, Long Beach, the Inland Empire (Riverside and San Bernardino), and San Diego. We work with property managers, general contractors, HOAs, and developers on projects of all sizes.

We know the local agency requirements, we show up on time, and we handle all the paperwork. If you’re planning a new construction project, dealing with a line repair, or just want to know what to expect — give us a call. We’ll walk you through the timeline specific to your property and location.

Ready to schedule? Contact us today or call to get a quote for your next project.

The post How Long Does Waterline Chlorination Take? What Property Managers Need to Know appeared first on California Backflow & Chlorination .

Yet it’s one of the most commonly overlooked steps on a construction timeline — leading to failed inspections, project delays, and unnecessary costs.

Here’s everything builders, plumbers, contractors, and property developers in Los Angeles need to know about new construction chlorination requirements.

What Is New Construction Chlorination?

New construction chlorination (also called waterline disinfection) is the process of flushing newly installed potable water lines with a chlorine solution to kill bacteria and contaminants introduced during installation. After the chlorine dwells in the system for a set period, the lines are flushed until chlorine levels return to safe drinking water standards.

Every new water line — whether it’s a single-family home, commercial building, or multi-story development — must be chlorinated before it can pass final inspection and receive water service approval.

Why Is It Required?

During construction, open pipe ends are exposed to dirt, debris, insects, and even standing water. Bacteria like E. coli and Legionella can colonize inside untreated pipes. Without proper disinfection, those contaminants flow straight to faucets, showers, and drinking fountains the moment the water is turned on.

California’s plumbing code, based on the California Plumbing Code (CPC) Section 609, requires disinfection of all new potable water systems. Los Angeles County enforces this through the Department of Public Health and local building departments. No chlorination certificate? No sign-off.

Los Angeles County Chlorination Standards

In Los Angeles County, new construction chlorination must meet specific standards:

• Chlorine concentration: Typically 50 ppm (parts per million) for a minimum of 24 hours, or 200 ppm for a shorter dwell time, depending on the jurisdiction and pipe material.
• Bacteriological testing: After flushing, water samples must be collected and tested. Results must show the absence of coliform bacteria.
• Documentation: A chlorination certificate or report is required for final inspection. This includes chlorine concentrations, dwell times, flush records, and lab results.
• AWWA standards: Most jurisdictions reference AWWA C651 (for water mains) and AWWA C652 (for water storage facilities) as the baseline for acceptable chlorination procedures.

Different cities within LA County — Pasadena, Long Beach, Glendale, Santa Monica — may have slightly different submission requirements, but the core chlorination process is consistent.

When Does Chlorination Happen in the Construction Timeline?

Chlorination typically occurs after:

1. Plumbing rough-in is complete and pressure tested
2. All connections are made (no open ends)
3. Before the final plumbing inspection

It’s one of the last steps before occupancy. Scheduling it too late is one of the biggest mistakes contractors make — if the lab results come back contaminated, you’re looking at re-chlorination, re-testing, and potentially a week or more of delays.

Pro tip: Schedule your chlorination service at least 5–7 business days before your target inspection date. That gives enough buffer for lab turnaround and any re-tests.

Common Mistakes That Cause Failed Chlorination Tests

Having performed thousands of chlorination jobs across Southern California, we see the same issues repeatedly:

1. Leaving Pipe Ends Open During Construction

Open pipes collect debris and bacteria. Cap or plug all open ends immediately after installation.

2. Skipping the Pre-Flush

Before introducing chlorine, the system should be flushed to remove loose sediment. Skipping this step leads to contaminated test results.

3. Insufficient Dwell Time

Chlorine needs time to work. Cutting the dwell period short — even by a few hours — can result in bacteria surviving and tests failing.

4. Poor Sample Collection

Samples must be collected in sterile containers from specific locations. Improper technique introduces false positives.

5. Not Hiring a Certified Professional

DIY chlorination might seem simple, but without proper concentration levels, dwell times, and flushing procedures, you risk failed tests and code violations. Licensed professionals carry the right equipment, understand local requirements, and provide the documentation inspectors need.

What About Remodels and Repairs?

It’s not just new construction. In Los Angeles County, any modification to existing potable water lines may trigger a chlorination requirement. This includes:

• Adding new water lines during a remodel
• Replacing sections of corroded or damaged pipe
• Tying into existing municipal water mains
• Installing new irrigation connections to potable supply

If you’re pulling a plumbing permit, ask your inspector whether chlorination and bacteriological testing will be required. In most cases, the answer is yes.

How Cal-Backflow Handles New Construction Chlorination in Los Angeles

At California Backflow & Chlorination, we provide full-service waterline chlorination for new construction projects across Los Angeles County and all of Southern California — including Long Beach, Orange County, the Inland Empire, and San Diego.

Here’s what our service includes:

• Pre-flush of all new lines to remove construction debris
• Chlorine injection at the proper concentration per code requirements
• Monitored dwell period to ensure complete disinfection
• System flush to bring chlorine levels back to safe standards
• Bacteriological sample collection and submission to a certified lab
• Chlorination certificate and documentation for your inspector

We work with general contractors, plumbing companies, property developers, and municipal projects. We understand the timelines you’re working against and schedule accordingly — because a missed chlorination appointment means a missed inspection.

Don’t Let Chlorination Hold Up Your Project

New construction chlorination in Los Angeles isn’t complicated when you work with the right team. But it does require proper planning, professional execution, and compliant documentation.

If you’re building in LA County and need chlorination services — or you’re a plumber looking for a reliable chlorination partner — Cal-Backflow is here to help.

Call us today or request a quote online to schedule your new construction chlorination service. We serve all of Los Angeles County and Southern California.

California Backflow & Chlorination provides backflow testing, waterline chlorination, and cross-connection services across Southern California. Learn more about our chlorination services →

The post New Construction Chlorination Requirements in Los Angeles County appeared first on California Backflow & Chlorination .

What is Chlorination?

Chlorination is the process of introducing chlorine into water lines to eliminate bacteria, viruses, and other microorganisms. This procedure is required by California health codes whenever water lines are installed, repaired, or taken out of service for extended periods.

When is Chlorination Required?

California regulations mandate chlorination in several situations:

• New construction – All new water lines must be chlorinated before use
• Water main repairs – Any time a water line is cut or repaired
• Tenant improvements – Commercial buildouts with new plumbing
• Extended vacancy – Properties left vacant for 30+ days
• Failed bacteria tests – When routine testing shows contamination
• Fire line installations – New fire suppression systems

The Chlorination Process

Professional chlorination involves several steps:

1. Flushing – Removing debris and stagnant water
2. Chlorine injection – Introducing chlorine at proper concentrations
3. Contact time – Allowing chlorine to work (typically 24 hours)
4. Flushing – Removing chlorinated water
5. Bacteria testing – Lab verification that water is safe

Why Hire a Licensed Contractor?

Chlorination requires a C-36 plumbing license in California. Improper chlorination can result in:

• Failed inspections and project delays
• Costly re-testing
• Health code violations
• Liability issues

Serving All of Southern California

California Backflow & Chlorination provides professional chlorination services throughout Los Angeles, San Diego, Orange County, Riverside, San Bernardino, and the Inland Empire. Our licensed technicians handle projects of all sizes—from single tenant improvements to multi-mile water main installations.

Need chlorination services? Contact us for a free quote.

The post What is Water Line Chlorination and When Do You Need It? appeared first on California Backflow & Chlorination .

STEP 1: Making Sure the Waterlines are Clean and Free of Debris

The single most important factor influencing the success of water line disinfection is to make sure the waterlines are free of dirt, debris and foreign organic material before starting the disinfection process. It is crucial to thoroughly inspect the water lines. This involves examining for leaks, corrosion, or any physical damage that could affect the effectiveness of disinfection. Identifying and addressing these issues early ensures that the process will be successful. Additionally, assessing the water line system helps determine the most suitable disinfection method based on the system’s size, condition, and complexity.

Step 2: Cleaning the Water Lines

The next step is to clean the water lines by removing any accumulated debris, sediment, or organic materials. These substances can harbor bacteria and biofilms, reducing the effectiveness of disinfection. Depending on the condition of the lines, this may involve flushing them with high-pressure water or using specialized tools to clear out the debris.

Step 3: Deciding the Method of Sanitization

The most widely used method for disinfection is Water line Chlorination. Chlorination has proven safe, effective and economical thus becoming the primary method of sanitization.

Alternative methods for sanitization include UV light Disinfection, Biocide disinfection and Ozone control. Each of these have unique applicability, but are not commonly used in pipeline disinfection for their own reasons.

Step4 : Executing the Disinfection

Now that the sanitization method has been chosen, you must determine the best route to inject the disinfection solution into the waterline. Most of the time the solution will be injected at the backflow preventer or source which feeds the system. Alternative methods are the isolate the waterlines that are getting sanitized and take an outside sanitary water source and inject chlorinated water into the system at a desirable concentration to kill any organic matter.

Step 5: Flushing of the Water Line

After the desired contact time has been reached the waterlines must be flushed with potable water such that the concentration of chlorine in the waterline matches the incoming water supply.

Step 6: Results

Following the flushing of the system, water samples are collected from various points throughout the waterline and brought to an independent state certified laboratory who will conduct testing on the samples to ensure the system is absent of any undesirable bacteria and viruses. If the results show the absence of the sampled bacteria, the system will be bacteriologically safe for normal use.

The post The Process for Water Line Chlorination in California appeared first on California Backflow & Chlorination .

There are many questions in regards to chlorine in drinking water. Chlorine is a man made additive in drinking water, which is typically added to a concentration of 0.5-2.0 parts per million in tap water. This chlorine is vital in keeping our drinking sources safe from bacteria and viruses. But, for the same reason chlorine is great for killing unwanted pathogens, its not great to drink and shower in. Many people have asked if they should get a whole house filter in order to filter out the chlorine in their home. My answer is, no. Here’s why, the chlorine in drinking water prevents bacteria from forming in your waterlines. A whole home filter will filter out the chlorine coming from the city. While that may sound like a good idea, it leaves the possibility for any water lines downstream of the filter at risk for bacteria growth. The ideal scenario is the filter out the chlorine at the point of use. So, for example if you’re drinking the tap water, get a sink filter which will filter out the chlorine as its coming from the sink. Or, if you’re showering get a showerhead filter which pulls the chlorine out of the water at the shower head. You want to keep the chlorine in the waterlines up until use.

The post Chlorine in Drinking Water. Is it necessary? appeared first on California Backflow & Chlorination .

The post How to Chlorinate Water Lines appeared first on California Backflow & Chlorination .

There are two agencies that write the rules for chlorination. One is the American Water Works Association, referred to most commonly as AWWA, and California law via California plumbing code. AWWA C651 is the procedure designed for disinfection of water mains, specifically underground water lines. California Plumbing code is a much more broad code which doesn’t delineate underground water lines from building water lines. The California Plumbing code section about chlorination is 609.9 which stipulates that any newly repaired or installed water lines need to be disinfected in order to ensure they are sanitary and bacteriologically safe for normal use. So, if we are chlorinating underground water lines, we generally follow AWWA C651 procedure, and if we’re chlorinating building water lines we follow CPC 609.9.

History of Water Chlorination

Americans take safe drinking water for granted today. Just over a century ago, water chlorination wasn’t standard practice. Surprisingly, the use of chlorine to purify water began with chlorinating water for animals.

Regular chlorination of water for human consumption didn’t take hold in the US until the early 20th century. In 1908, Dr. John Leal, a devoted physician and public health advocate, pioneered mass chlorination in Jersey City, New Jersey. His chlorine disinfection system successfully eliminated harmful pathogens and curbed disease outbreaks. That same year, George Johnson implemented a similar chlorination process for Chicago’s water supply. Impressed by the dramatic results, cities nationwide followed suit by the 1920s.

Once a deadly threat, the typhoid epidemic is now rarely a concern thanks to chlorine. Studies show that chlorination and filtration reduced typhoid fever rates by a staggering 91%, leading to near eradication by 1936.

The post Why is Water Line Chlorination necessary? appeared first on California Backflow & Chlorination .