TapMatch

St. Petersburg, Florida

City of St. Petersburg 2024 Water Quality Report. Commonly-requested hardness 165 mg/L. Chloramines 3.82 ppm (range 0.60–5.90). No Measure S-style residential softener ban turned up.

Cited chemistry for St. PetersburgA chart of numbers printed on the utility report, each labeled with its unit. Missing numbers are left off.Hardness165 mg/LChloramine3.82 ppm (range 0.60–5.90)TTHMs22 ppb (range 13.31–27.3)HAA522.65 ppb (range 10.00–30.26)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. Hardness165 mg/L
  2. Chloramine3.82 ppm (range 0.60–5.90)
  3. TTHMs22 ppb (range 13.31–27.3)
  4. HAA522.65 ppb (range 10.00–30.26)

Best match for St. Petersburg

Salt-based water softener

No district prohibition on a brine drain turned up in the current file.

Two tall mineral tanks and a black brine tank of a salt-based water softener, plumbed with copper pipe in a garage.
Salt-based softener: two mineral tanks and a brine tank.

A salt-based softener is the thing that actually removes hardness. Size it from your grains and how much water you use, not bathroom count. It needs a drain.

Shop salt-based softeners

Some links are affiliate links. If you buy through one, we may earn a commission. That does not change the match, and it is not a medical claim.

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Other options that still fit

  • Salt-free conditioner

    A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.

    Shop salt-free conditioners

  • Whole-house catalytic carbon for chloramine

    Catalytic carbon with a chloramine claim (NSF/ANSI 42 for chloramine). Regular chlorine carbon is the wrong box.

    Shop catalytic carbon for chloramine

  • Under-sink reverse osmosis

    The under-sink RO we actually run is Cloud RO — NSF/ANSI 58, kitchen tap, not a whole-house tank. Check the exact listing if PFAS is why you are shopping. Shop Amazon first for under-sink RO, or buy Cloud direct. Waterdrop is a tankless option if you want that path. A certifier-listed pitcher is the cheap first step. Nobody is paying for a medical claim.

    Shop under-sink reverse osmosisBuy Cloud RO directShop Waterdrop reverse osmosisShop PFAS-listed pitchers

  • Test the tap first

    A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.

    Shop water test kits

On the report

Water utility
City of St. Petersburg Water Resources
Hardness
Commonly-requested testing results, 2024 monthly averages. Hardness 165 mg/L. Companion averages on the same line — pH 8.2, alkalinity 125 mg/L, calcium 57 mg/L, magnesium 6 mg/L, sulfate 61 mg/L. One printed hardness number — not a blend we invented. — City of St. Petersburg 2024 Water Quality Report
Disinfectant
Chloramines 3.82 ppm highest RAA (range 0.60–5.90), MRDL 4.0 / MRDLG 4. Chloramine, not free chlorine. Narrative says potable water is disinfected using chloramines. — City of St. Petersburg 2024 Water Quality Report
Brine / salt to the sewer
No district prohibition found in current research. Searched City of St. Petersburg Water Resources and sewer pages for a residential self-regenerating softener or brine-drain ban like LACSD Measure S. None 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.

  • MicroplasticsWHO’s 2019 review examined studies that found microplastic particles in treated tap and bottled water in many places. That is a published-occurrence finding, not a number from this city’s water-quality report, and we do not invent a particles-per-liter count for the tap.Microplastics in drinking-water — World Health Organization
  • SodiumSame 2024 City table. Sodium 13.5 ppm (May 2023 row). A Tampa Bay Water wholesale sodium row also prints 78.5 ppm (8.99–78.5) — those are labeled tables, not a blend.City table 13.5 ppm (5/23). Tampa Bay Water table 78.5 ppm (8.99–78.5).2024 Water Quality Report — City of St. Petersburg

St. Petersburg drinking water is City of St. Petersburg Water Resources, treated at Cosme and purchased in part from Tampa Bay Water. No City of St. Petersburg 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 2024 report prints commonly-requested hardness 165 mg/L. Chloramines 3.82 ppm (0.60–5.90). TTHMs 22 ppb (13.31–27.3). HAA5 22.65 ppb (10.00–30.26). Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.

Sources

  1. 2024 Water Quality Report — City of St. Petersburg. Accessed 2026-09-10.

Updated September 10, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.