Oklahoma City, Oklahoma

Oklahoma City 2026 Consumer Confidence Report covering calendar year 2025 (PWS OK1020902). Lakes Hefner, Atoka, and Draper. Chlorine/chloramines residual RAA 3.0 mg/L. Hardness is not on the tables we opened. No Measure S-style residential softener ban turned up.

Cited chemistry for Oklahoma CityA chart of numbers printed on the utility report, each labeled with its unit. Missing numbers are left off.Chlorine/chloramines3.0 mg/L RAATTHMs64 ppb highest RAA (range 27.02–58.6)HAA532 ppb highest RAA (range 6.25–28.42)WQR
Cited numbers from the utility report. Length follows the printed value against a labeled scale — not a health ranking. If the report has no number, it is not on the chart.
  1. Chlorine/chloramines3.0 mg/L RAA
  2. TTHMs64 ppb highest RAA (range 27.02–58.6)
  3. HAA532 ppb highest RAA (range 6.25–28.42)

Best match for Oklahoma City

Whole-house carbon — match chlorine vs chloramine

A single black whole-house carbon tank with a control head, installed in a garage and connected to copper pipe.
Whole-house carbon tank. No brine tank.

Open the CCR for chlorine vs chloramine, then match that claim. A 42 chlorine listing is not chloramine.

Shop whole-house carbonShop catalytic carbon for chloramine

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Other options that still fit

On the report

Water utility
Oklahoma City Utilities Department
Hardness
Not printed on the 2025 ODEQ tables we opened. This file does not invent a grains number from a ranking site. Open the current report or ask Utilities. — Oklahoma City 2026 Consumer Confidence Report (2025 data)
Disinfectant
Chlorine/chloramines maximum disinfection level — December 2025 MPA 3 mg/L, RAA 3.0 mg/L. June 2025 MPA 3 mg/L, RAA 3 mg/L. The table does not separate free chlorine from chloramine. Open the city booklet if you need the residual type. — Oklahoma City 2026 Consumer Confidence Report (2025 data)
Brine / salt to the sewer
No district prohibition found in current research. No Oklahoma City residential softener ban like LACSD Measure S turned up. Ask the sewer agency on the bill before you cut a brine drain.

Also around here

Extra context besides the utility report and the chart above — geology, an unregulated table, or a published study. Not a second set of printed tap numbers.

Oklahoma City drinking water comes from Lake Hefner, Lake Atoka, and Draper Lake (PWS OK1020902). No city residential softener ban like LACSD Measure S turned up. Ask the sewer agency on the bill before you cut a brine drain. This is not a legal opinion.

The 2026 ODEQ Consumer Confidence Report covering calendar year 2025 prints chlorine/chloramines residual as December MPA 3 mg/L, RAA 3.0 mg/L. The table does not separate free chlorine from chloramine. Hardness is not on the tables we opened. This file does not invent a grains number.

TTHMs highest RAA 64 ppb (range 27.02–58.6). HAA5 highest RAA 32 ppb (range 6.25–28.42). The city also posts a booklet at okc.gov/ccr. Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.

Sources

  1. Consumer Confidence Report – 2026 covering calendar year 2025 (PWS ID OK1020902) — Oklahoma Department of Environmental Quality / Oklahoma City. Accessed 2026-09-09.

Updated September 9, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.