# San Jacinto, City of, CA — Drinking Water Quality (2023)

> Contaminant levels for the San Jacinto, City of, CA public water system from its 2023 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/san-jacinto/2023
- JSON API: https://www.thewatermap.com/api/water/ca/san-jacinto/2023
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved before publishing
- Reporting year: 2023
- Contaminants measured: 32
- Contaminants with a federal limit: 15
- Contaminants at or above the federal limit: 1
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Bromodichloromethane | Disinfection byproducts | 4.36875 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Bromoform | Disinfection byproducts | 2.1375 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Chloroform | Disinfection byproducts | 2.665625 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Dibromochloromethane | Disinfection byproducts | 5.0125 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| HAA5 | Disinfection byproducts | Not detected UG/L (Highest single sample) | Distribution | 60 UG/L (MCL) | None detected |
| Perchlorate | Disinfection byproducts | Not detected UG/L (Highest single sample) | Source water | 6 UG/L (MCL) | None detected |
| TTHM | Disinfection byproducts | 14.35 UG/L (Average) | Distribution | 80 UG/L (MCL) | Within the limit |
| Chloride | Inorganic chemicals | 14.4 MG/L (Average) | Source water | 500 MG/L (MCL) | Within the limit |
| Fluoride | Inorganic chemicals | 0.14333333333333334 MG/L (Average) | Source water | 2 MG/L (MCL) | Within the limit |
| Nitrate | Inorganic chemicals | Not detected MG/L (Highest single sample) | Source water | 10 MG/L (MCL) | None detected |
| Nitrite | Inorganic chemicals | Not detected MG/L (Highest single sample) | Source water | 1 MG/L (MCL) | None detected |
| Sulfate | Inorganic chemicals | 31.433333333333334 MG/L (Average) | Source water | 500 MG/L (MCL) | Within the limit |
| Boron | Metals | 18 UG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Calcium | Metals | 30.2 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Copper | Metals | 200 UG/L (90th percentile) | Distribution | 1300 UG/L (Al) | Within the limit |
| Iron | Metals | 70.65384615384616 UG/L (Average) | Source water | 300 UG/L (MCL) | Within the limit |
| Lead | Metals | 1.660000000000001 UG/L (90th percentile) | Distribution | 15 UG/L (Al) | Within the limit |
| Magnesium | Metals | 5.13 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Manganese | Metals | 77.20769230769231 UG/L (Average) | Source water | 50 UG/L (MCL) | At or above the limit |
| Potassium | Metals | 3.546666666666667 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Silica | Metals | 24 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Sodium | Metals | 25.099999999999998 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Zinc | Metals | 30.433333333333334 UG/L (Average) | Source water | 5000 UG/L (MCL) | Within the limit |
| Dbaa | Other | 0.96875 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Dcaa | Other | 0.7875 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Mbaa | Other | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Mcaa | Other | Not detected UG/L (Highest single sample) | Distribution | No federal limit | None detected |
| Tcaa | Other | 0.70625 UG/L (Average) | Distribution | No federal limit | Detected — no federal limit |
| Alkalinity | Physical & aggregate | 126.22222222222223 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Hardness | Physical & aggregate | 159.66666666666666 MG/L (Average) | Source water | No federal limit | Detected — no federal limit |
| Specific Conductance | Physical & aggregate | 414.3333333333333 UMHO/CM (Average) | Source water | 1600 UMHO/CM (MCL) | Within the limit |
| Total Dissolved Solids | Physical & aggregate | 270.3333333333333 MG/L (Average) | Source water | 1000 MG/L (MCL) | Within the limit |

## What these contaminants are

- **Bromodichloromethane** — A trihalomethane disinfection byproduct. Counted within regulated total trihalomethanes; long-term exposure is associated with cancer and reproductive effects.
- **Bromoform** — A trihalomethane disinfection byproduct. Counted within regulated total trihalomethanes; long-term exposure is associated with liver and kidney effects.
- **Chloroform** — A trihalomethane formed when chlorine reacts with organic matter in water. A component of regulated total trihalomethanes; long-term exposure is linked to liver and kidney effects.
- **Dibromochloromethane** — A trihalomethane disinfection byproduct. Part of regulated total trihalomethanes; long-term exposure is linked to nervous-system, liver, and kidney effects.
- **HAA5** — Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. Long-term exposure above the federal limit is associated with an increased cancer risk.
- **Perchlorate** — A chemical used in rocket fuel and fireworks that can also form during disinfection. Can interfere with thyroid hormone production; has no national enforceable limit but is regulated in some states.
- **TTHM** — Total trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. Long-term exposure above the federal limit is linked to liver, kidney, and central-nervous-system effects and increased cancer risk.
- **Chloride** — A naturally occurring salt compound. Regulated only as a secondary (cosmetic) standard; high levels cause a salty taste and can corrode pipes.
- **Fluoride** — A mineral often added to drinking water to help prevent tooth decay. Beneficial at low levels, but long-term exposure above the federal limit can cause bone disease and tooth mottling.
- **Nitrate** — A compound from fertilizer runoff, septic systems, and erosion of natural deposits. Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
- **Nitrite** — A compound from fertilizer runoff, sewage, and erosion of natural deposits. Like nitrate, elevated levels can cause 'blue baby syndrome' in infants.
- **Sulfate** — A naturally occurring mineral from rock and soil. No health-based federal limit; high levels can have a laxative effect and a bitter taste.
- **Boron** — A naturally occurring element from rock and soil. No enforceable federal limit; the EPA has issued a health advisory level.
- **Calcium** — A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
- **Copper** — A metal that enters water from corroding household plumbing. Short-term exposure causes stomach distress; long-term exposure can damage the liver and kidneys.
- **Iron** — A naturally occurring metal common in groundwater. Regulated only as a secondary (cosmetic) standard; causes rusty color, staining, and metallic taste.
- **Lead** — A toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. There is no safe level of lead; it harms brain development in children and raises blood pressure in adults. The EPA sets an action level, not a health goal above zero.
- **Magnesium** — A naturally occurring mineral that contributes to water hardness. Not federally regulated for health; affects scaling and taste.
- **Manganese** — A naturally occurring metal from soil and rock. No enforceable federal limit; high levels stain fixtures and laundry and can affect taste, with a health advisory for infants.
- **Potassium** — A naturally occurring mineral from rock and soil. Not federally regulated for health.
- **Silica** — A naturally occurring compound from sand and rock. Not federally regulated for health; relevant mainly for industrial water use.
- **Sodium** — A naturally occurring salt component. Not federally regulated for health; relevant for people on sodium-restricted diets.
- **Zinc** — A naturally occurring metal that can also enter water from corroding pipes. Regulated only as a secondary (cosmetic) standard; high levels cause a metallic taste.
- **Alkalinity** — A measure of the water's capacity to neutralize acids. Not federally regulated for health; relevant to corrosion control and treatment.
- **Hardness** — A measure of dissolved calcium and magnesium minerals. Not federally regulated for health; affects scaling, soap use, and taste.
- **Specific Conductance** — A measure of how well water conducts electricity, which tracks dissolved mineral content. Not federally regulated for health; used as a proxy for total dissolved solids.
- **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 to read this

- A water-quality report covers an entire service area, not a single address.
- 'Federal limit' is the EPA standard (MCL, action level, treatment technique, etc.) that the measured level is compared against.
- 'At or above the federal limit' means the utility's own reported figure met or exceeded that standard.

_Figures are the utility's own published numbers. Generated 2026-05-26 from thewatermap.com._