Valley Estates

Monitoring and Reporting: 8 violations, Jul 2023 to Mar 2026. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminant on the record: Chlorine (MRDL).

Monitoring and Reporting: 6 violations, Jan 2023 to Dec 2025. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminants on the record: Total Haloacetic Acids (HAA5), TTHM (Total Trihalomethanes).

Monitoring and Reporting: 42 violations, Jan 2023 to Dec 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminants on the record: 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Xylenes, Total, Dichloromethane (Methylene Chloride), o-Dichlorobenzene, p-Dichlorobenzene, Vinyl Chloride, 1,1-Dichloroethylene, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon Tetrachloride, 1,2-Dichloropropane, Trichloroethylene (TCE), 1,1,2-Trichloroethane, Tetrachloroethylene (PCE), Chlorobenzene, Benzene, Toluene, Ethylbenzene, Styrene.

Monitoring and Reporting: 32 violations, Jan 2023 to Dec 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminants on the record: Endrin, BHC-Gamma (Lindane), Methoxychlor, Toxaphene, Di(2-ethylhexyl) Adipate, Simazine, Di(2-ethylhexyl) Phthalate, Hexachlorocyclopentadiene, Atrazine, Alachlor (Lasso), Heptachlor, Heptachlor Epoxide, Hexachlorobenzene, Benzo(a)pyrene, Pentachlorophenol, Chlordane.

Maximum Contaminant Level Violation, health-based: 12 violations, Jul 2023 to Jun 2026. A sample exceeded the maximum contaminant level EPA allows in drinking water.

Monitoring and Reporting: 6 violations, Jul 2023 to Dec 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

What the rule requires: Arsenic is a naturally occurring metalloid found in bedrock and soil. It dissolves into groundwater from natural deposits and can also come from mining, smelting and past pesticide use. EPA lowered the MCL from 50 ppb to 10 ppb in 2001.

Health effects: Long-term arsenic exposure increases risk of bladder, lung, and skin cancers. It is also associated with cardiovascular disease, type 2 diabetes, and developmental effects in children. Arsenic is classified as a Group A human carcinogen by the EPA. Limit: 0.010 mg/L (10 ppb), set in 2001 and enforceable since 2006; the previous MCL was 0.050 mg/L (50 ppb)

Maximum Contaminant Level Violation, health-based: 23 violations, Jul 2023 to Jun 2026. A sample exceeded the maximum contaminant level EPA allows in drinking water.

Monitoring and Reporting: 13 violations, Jan 2021 to Dec 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminants on the record: Cyanide, Fluoride, Selenium.

Cyanide, health effects: Acute high-dose cyanide exposure interferes with cellular oxygen use and can cause rapid deterioration of the central nervous system, including headache, dizziness, and in severe cases, loss of consciousness. Chronic exposure at lower levels is associated with thyroid dysfunction and nerve damage. Most drinking water violations pose chronic rather than acute risk. Limit: 0.2 mg/L (200 ppb)

Fluoride, health effects: Above 2 mg/L: dental fluorosis (mottling/pitting of tooth enamel) in children under 8. Above 4 mg/L: skeletal fluorosis (joint pain, increased bone density) after decades of exposure. Limit: 4 mg/L primary MCL; 2 mg/L secondary MCL (cosmetic)

Selenium, health effects: Chronic exposure above the MCL causes selenosis — characterized by hair and nail loss, peripheral neuropathy, fatigue, and gastrointestinal disturbance. Liver damage can occur with prolonged high intake. The margin between nutritional requirement and toxic dose is narrow, making the MCL an important threshold. Limit: 0.05 mg/L (50 ppb)

Monitoring and Reporting: 2 violations, Jan 2023 to Dec 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

What the rule requires: Nitrate (NO₃) is the most common chemical contaminant in US groundwater, entering from fertilizers, septic systems, and animal waste. It is odorless and tasteless — the only way to know if it's present is to test.

Maximum Contaminant Level Violation, health-based: 10 violations, Jul 2023 to Mar 2026. A sample exceeded the maximum contaminant level EPA allows in drinking water.

Monitoring and Reporting: 15 violations, Jul 2023 to Sep 2024. The system did not complete required monitoring, or did not report the results on time. This does not show that a contaminant was found.

Contaminants on the record: Gross Alpha, Excl. Radon and U, Combined Uranium, Combined Radium (-226 and -228).

Gross Alpha, Excl. Radon and U, health effects: Alpha-emitting radionuclides accumulate in bone and soft tissue, delivering sustained internal radiation doses that increase lifetime cancer risk. There is no established safe threshold for ionizing radiation. Individual contributors such as radium-226 and polonium-210 have their own MCLs; gross alpha serves as a cost-effective screening tool that triggers more specific radionuclide analysis when exceeded. Limit: 15 pCi/L (excluding radon and uranium)

Combined Uranium, health effects: Uranium poses both radiological and chemical health risks. Chronic exposure is primarily associated with kidney damage due to its chemical toxicity as a heavy metal. The radiological risk — increased cancer probability — is also present but secondary to the nephrotoxic concern at drinking water concentrations. There is no safe threshold for radiation exposure. Limit: 0.030 mg/L (30 µg/L)

Combined Radium (-226 and -228), health effects: Radium is a bone-seeking radionuclide that accumulates in skeletal tissue after ingestion. Long-term exposure increases the risk of bone cancer and leukemia. There is no safe threshold for ionizing radiation — the MCL is set at a level balancing risk reduction with treatment feasibility. Children are particularly vulnerable due to higher rates of bone growth and calcium uptake. Limit: 5 pCi/L (combined Ra-226 and Ra-228)