Physical & aggregate · 2026
Total Dissolved Solids in Irvine Ranch Water District, CA tap water
Irvine Ranch Water District, CA's 2026 Total Dissolved Solids measurement is below the federal limit of 1000 MG/L (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average Entry point | 375.0125 MG/L | 1000 MG/L MCL |
Highest single sample Entry point | 700 MG/L | 1000 MG/L MCL |
Average Source water | 587.2727272727273 MG/L | 1000 MG/L MCL |
Highest single sample Source water | 1180 MG/L | 1000 MG/L MCL |
Verbatim from Irvine Ranch Water District, CA's 2026 Consumer Confidence Report — source document ↗
About Total Dissolved Solids
Total dissolved solids — the combined content of all dissolved minerals and salts.
Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.
How Irvine Ranch Water District, CA compares
5 of the 237 systems measuring Total Dissolved Solids on The Water Map have it at or above the federal limit:
Nearby systems also reporting Total Dissolved Solids:
People also ask
+Is there Total Dissolved Solids in Irvine Ranch Water District, CA tap water?
Yes — Irvine Ranch Water District, CA's 2026 Consumer Confidence Report lists Total Dissolved Solids at 587.2727272727273 MG/L. Irvine Ranch Water District, CA's 2026 Total Dissolved Solids measurement is below the federal limit of 1000 MG/L (MCL).
+What's the federal limit for Total Dissolved Solids in drinking water?
The federal MCL for Total Dissolved Solids is 1000 MG/L. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Total Dissolved Solids?
Total dissolved solids — the combined content of all dissolved minerals and salts. Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.
+Which other U.S. cities have Total Dissolved Solids over the federal limit?
5 of the 237 systems on The Water Map measuring Total Dissolved Solids report it at or above the federal limit. Examples include St George, UT, College Station, TX, Inglewood, CA.
+Where does this Total Dissolved Solids measurement come from?
This page reproduces the Total Dissolved Solids entry from the 2026 Consumer Confidence Report published by the Irvine Ranch Water District, CA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/ca/irvine-ranch-water-district/2026/source.