Your water is a binding contract between chemistry and care.
We never break it.
We pull into Wicker Park driveways at 7 a.m., test 7 chemical markers, and leave a timestamped report before the neighborhood wakes up. Every visit. No exceptions.
Live Reading
2642 N. Damen Ave · Feb 27, 7:14 a.m.
Every layer we peel back is something most pool companies hide.
Scroll through the four phases of every Chlorine visit. Left panel: plain-language promise. Right panel: the actual evidence.
Arrival & Assessment
We test 7 chemical markers, not 3.
Most services test free chlorine, pH, and alkalinity. We add cyanuric acid, calcium hardness, total dissolved solids, and phosphate — the four markers that predict failure before it happens. Every test is run with a Lamotte ColorQ Pro 11 photometer, not a strip.
Lamotte ColorQ Pro 11 · Technician #IL-2847
Chemical Treatment
We publish every chemical we add — brand, concentration, volume.
You receive an itemized treatment log with product names, EPA registration numbers, and exact volumes added. We source exclusively from Univar Solutions and BioGuard Pro — the same suppliers used by Chicago Park District. No mystery bags.
BioGuard Burn Out 35
EPA Reg. 1258-1394
Volume added: 2.0 lbs
Univar Muriatic Acid 31.45%
EPA Reg. 5813-50
Volume added: 16 fl oz
BioGuard Stabilizer 100
EPA Reg. 1258-1139
Volume added: 0.5 lbs
Timestamped · Countersigned by tech
Physical Service
Brush, skim, vacuum, backwash — documented with a timestamped photo.
Every physical service step is logged with a before/after photograph uploaded to your client portal within 30 minutes of departure. You see the same evidence your property manager sees. No summarized reports — raw documentation.
- Brush walls and floor — all surfaces
- Skim debris from surface
- Vacuum floor and steps
- Clean skimmer and pump baskets
- Backwash or clean filter (as needed)
- Check equipment operation and pressure
Uploaded 7:41 a.m. · Available in portal
Compliance Report
You receive a CDPH-formatted report, not a text message.
Every visit closes with a report formatted to Chicago Department of Public Health standards — the same document a health inspector would request. Rooftop and commercial pools receive a PDF stamped with our license number. Residential clients receive the same report; most never need it, but it exists.
- Free Chlorine within 1.0–3.0 ppm
- pH within 7.2–7.8
- Alkalinity within 80–120 ppm
- Cyanuric acid ≤ 100 ppm (outdoor)
- Calcium hardness within 200–400 ppm
- Visible algae: None
- Equipment operational
License #IL-PC-00847 · Fully insured
Ready after seeing how we work?
Most clients schedule after the Process section.
Three very different pools. One standard of documentation.
The chemistry doesn't change based on who owns the pool. Neither does our protocol.
North Shore homes
Your pool runs on your schedule, not ours.
Swim-team practices on Tuesday. Dinner parties on Saturday. We lock in your recurring day and arrive before 8 a.m. so your pool is ready by the time anyone asks. Families in Wilmette, Winnetka, and Glencoe have had the same Chlorine technician for 3+ years.
147 North Shore residential clients · Average tenure 2.8 years
Guest complaints on water quality
Guest-ready water between Friday turnovers.
You have a 2-hour window between checkout and check-in. We have a protocol for that. Lincoln Park Airbnb hosts with pool amenities average 4.8-star reviews on water quality. We coordinate directly with your cleaning crew and upload a "guest-ready" certificate to your portal before the next guest arrives.
63 short-term rental properties · Zero guest complaints on water quality
CDPH violations across all accounts
You cannot afford a single health-code citation.
River North and Gold Coast high-rises operate under CDPH inspection schedules that have zero tolerance. We maintain CDPH-formatted logs for every visit, carry $2M in liability coverage, and provide your building manager with a live portal showing current readings. When an inspector arrives, you hand them a binder.
28 commercial & rooftop pools · Zero CDPH violations across all accounts
Every technician is certified. Every number is public.
We don't say "licensed and insured." We show you the license number, the insurer, and the policy limit.
Certified Pool Operator (CPO)
Pool & Hot Tub Alliance
License #IL-PC-00847
CDPH Aquatic Facility Compliance
Chicago Dept. of Public Health
Verified · Current
General Liability Insurance
Travelers Insurance
$2,000,000 per occurrence
Worker's Compensation
State of Illinois
Policy #IL-WC-88214
Your technicians, by name and certificate number.
Marcus Webb
CPO #IL-2847
6 years with Chlorine
Wicker Park · Bucktown · Logan Square
Danielle Okafor
CPO #IL-3112
4 years with Chlorine
Lincoln Park · Lakeview · Roscoe Village
James Kowalski
CPO #IL-2601
8 years with Chlorine
River North · Gold Coast · Streeterville
Priya Mehta
CPO #IL-3348
3 years with Chlorine
Evanston · Wilmette · Kenilworth
What clients say — with names and neighborhoods attached.
“I manage three rooftop pools in River North. Before Chlorine, I had a CDPH notice every summer. It's been 26 months with zero citations. The portal is what sold me — I can pull up any reading on any date from my phone before an inspector even knocks.”
Raymond Szymanski
Property Manager, Nexus Residential Group
River North, Chicago
“My Airbnb in Lincoln Park has a plunge pool. Turnover windows are tight. Chlorine coordinates with my cleaning team directly, uploads the guest-ready certificate before I even land at O'Hare. Not one guest has ever mentioned the water except to compliment it.”
Adaeze Nwosu
Short-Term Rental Host
Lincoln Park, Chicago
“We have four kids in AAU swim. The pool gets used hard. Marcus has been our technician for three years — he knows our chemistry baseline, adjusts for heavy swim weeks without being asked, and the report he leaves is more detailed than anything our previous service provided.”
Catherine Hollis
Homeowner
Winnetka, IL
Every line item. No markup on chemicals.
We pass chemicals through at cost. Our margin is the service, not the markup. You'll see this in every treatment log.
Price-Match Guarantee
Show us a competitor quote — we match it or explain why we can't.
Weekly Maintenance Visit
Billed monthly
Bi-Weekly Maintenance
Billed monthly
Short-Term Rental Turnover
Scheduled with cleaning crew
Rooftop / Commercial Pool
Custom frequency available
Opening (Spring)
April–May scheduling
Closing (Fall)
September–October scheduling
Chemical sourcing — open to inspection.
We buy from two suppliers. We pass costs through at zero markup. Here's exactly what we use and where it comes from.
Chlorine (liquid or tablet)
Source: BioGuard Pro · Univar Solutions
Markup: At cost + 0%
pH Adjuster (muriatic acid)
Source: Univar Solutions
Markup: At cost + 0%
Algaecide (as needed)
Source: BioGuard Banish
Markup: At cost + 0%
Shock treatment (as needed)
Source: BioGuard Burn Out 35
Markup: At cost + 0%
Your recurring day is waiting. Lock it in.
Takes 90 seconds. Zip code first — we confirm your area, then find your day. A technician calls within 2 hours.
Download Our Water Quality Guarantee
A branded PDF outlining our full chemical-testing protocol, CDPH compliance standards, and the exact guarantee we make on every visit. 8 pages. No fluff.
What's inside