| Primary inorganics |
| Primary inorganics | Antimony | ug/L | ND | 0.6 | ND | 6.00 | 6.00 | No | 2025 | Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder. |
| Primary inorganics | Arsenic | ug/L | 1.7 | 7.8 | ND | 10 | 0 | No | 2025 | Erosion of naturally occurring deposits and runoff from orchards. |
| Primary inorganics | Barium | ug/L | 59.3 | 150.0 | ND | 2000 | 2000 | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Copper | ug/L | 1.0 | 32.0 | ND | NE | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Chromium | ug/L | ND | 1.0 | ND | 100 | 100 | No | 2025 | Discharge from steel and pulp mills; erosion of natural deposits. |
| Primary inorganics | Cyanide, Free | ug/L | 0.5 | 3.700 | ND | 200 | 200 | No | 2025 | Discharge from steel/metal factories; discharge from plastic and fertilizer factories. |
| Primary inorganics | Fluoride | mg/L | 0.14 | 0.14 | 0.14 | 4 | 4 | No | 2025 | Erosion of naturally occurring deposits and discharges from fertilizers. Fluoride added at source. |
| Primary inorganics | Lead | ug/L | 0.044 | 1.0 | ND | NE | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Nickel | ug/L | 0.14 | 3.00 | ND | NE | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Nitrate | mg/L | 1.44 | 3.67 | ND | 10 | 10 | No | 2025 | Runoff from fertilizer, leaching from septic tanks, and naturally occurring organic material. |
| Primary inorganics | Selenium | ug/L | 0.7 | 8.1 | ND | 50 | 50 | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Sodium | mg/L | 26.2 | 77.9 | 8.0 | NE | NE | No | 2025 | Erosion of naturally occurring deposits and runoff from road deicing. |
| Primary inorganics | Sulfate | mg/L | 52.7 | 239.0 | 5.4 | 1000 | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Thallium
| ug/L | 0.05 | 1.1 | ND | | | No | 2025 | |
| Primary inorganics | TDS | mg/L | 281.2 | 960.0 | ND | 2000 | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Primary inorganics | Turbidity (groundwater sources) | NTU | 0.2 | 0.7 | 0.03 | 5 | NE | No | 2025 | MCL is 5.0 for groundwater. Suspended material from soil runoff. |
| Primary inorganics | Turbidity (surface water sources) | NTU | 0.03 | 0.15 | 0.01 | 0.3 | TT | No | 2025 | MCL is 0.3 NTU 95% of the time for surface water. Suspended material from soil runoff. |
| Secondary inorganics – Aesthetic Standards |
| Secondary inorganics | Aluminum | ug/L | 2.65 | 27.70 | 0.0 | SS = 50-200 | NE | No | 2024 | Erosion of naturally occurring deposits and treatment residuals. |
| Secondary inorganics | Chloride | mg/L | 45.5 | 165.0 | 10.00 | SS = 250 | NE | No | 2024 | Erosion of naturally occurring deposits. |
| Secondary inorganics | Color | CU | 3.11 | 10.00 | 0.12 | SS = 15 | NE | No | 2024 | Decaying naturally occurring organic material and suspended particles. |
| Secondary inorganics | Iron | ug/L | 5.9 | 70 | ND | SS = 300 | NE | No | 2024 | Erosion of naturally occurring deposits. |
| Secondary inorganics | Manganese | ug/L | 0.2 | 35.00 | ND | SS = 50 | NE | No | 2024 | Erosion of naturally occurring deposits. |
| Secondary inorganics | Lowest Monthly % Meeting TT | % | 100% | | | | | | | Treatment Technique requirement applies only to treated surface water sources. |
| Secondary inorganics | pH | | 7.71 | 8.65 | 6.9 | SS = 6.5-8.5 | NE | No | 2025 | Naturally occurring and affected by chemical treatment. |
| Secondary inorganics | Silver | ug/L | 0.0080 | 1.0 | ND | SS = 100 | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Secondary inorganics | Zinc | ug/L | 0.6 | 30.0 | ND | SS = 5000 | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated parameters – monitoring not required |
| Unregulated | Alkalinity, Bicarbonate | mg/L | 135.6 | 225 | 24.5 | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Alkalinity, Carbonate | mg/L | 0.3 | 4.0 | ND | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Alkalinity, Hydroxide | mg/L | ND | 0.0 | ND | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Alkalinity, Total (CaCO3) | mg/L | 120 | 225 | 12 | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Ammonia | mg/L | | 0.3 | | UR | NE | No | 2025 | Runoff from fertilizer and naturally occurring. |
| Unregulated | Bromide | ug/L | ND | 9.5 | ND | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Calcium | mg/L | 45.2 | 144 | 13.30 | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Chemical Oxygen Demand | mg/L | ND | ND | ND | UR | NE | No | 2014 | Measures amount of organic compounds in water. Naturally occurring. |
| Unregulated | Conductance | umhos/cm | 465.2 | 1100 | 42.00 | UR | NE | No | 2025 | Naturally occurring. |
| Unregulated | Cyanide, Total | ug/L | 0.6 | 10 | ND | UR | NE | No | 2025 | Discharge from steel/metal factories; discharge from plastic and fertilizers. |
| Unregulated | Geosmin | ng/L | 1.3 | 6.4 | ND | UR | NE | No | 2025 | Naturally occurring organic compound associated with musty odor. |
| Unregulated | Hardness, Calcium | mg/L | 117.7 | 167.8 | 12.0 | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Hardness, Total | mg/L | 182.7 | 602 | 16.00 | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Magnesium | mg/L | 16.4 | 58.6 | ND | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Molybdenum | ug/L | 0.87 | 3.82 | ND | UR | NE | No | 2025 | By-product of copper and tungsten mining. |
| Unregulated | Orthophosphates | ug/L | 5.2 | 70 | ND | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Potassium | mg/L | 2.95 | 12.9 | 0.08 | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | TSS (Total Suspended Solids) | mg/L | 0.2 | 4.0 | ND | UR | NE | No | 2025 | Erosion of naturally occurring deposits. |
| Unregulated | Turbidity (distribution system) | NTU | 0.1 | 0.7 | ND | UR | NE | No | 2025 | Suspended material from soil runoff. |
| VOCs |
| VOCs | Chloroform | ug/L | 5.10 | 29.1 | ND | UR | NE | No | 2025 | By-product of drinking water disinfection. |
| VOCs | Dibromochloromethane | ug/L | 0.65 | 7 | ND | UR | NE | No | 2025 | By-product of drinking water disinfection. |
| VOCs | Bromodichloromethane | ug/L | 1.65 | 10 | ND | UR | NE | No | 2025 | By-product of drinking water disinfection. |
| VOCs | Bromoform | ug/L | 0.03 | 1 | ND | UR | NE | No | 2025 | By-product of drinking water disinfection. |
| VOCs | All Other Parameters | ug/L | 0.74 | 31.266 | ND | UR | NE | No | 2025 | Various sources. |
| Pesticides/PCBs/SOCs |
| Pesticides/PCBs/SOCs | Bis (2ethylhexyl) phthalate | ug/L | 0.03 | 1.30 | ND | 6.0 | 0 | | 2025 | Discharge from rubber and chemical factories. |
| Pesticides/PCBs/SOCs | All Other Parameters | ug/L | | | | | | | 2025 | |
| Radiological |
| Radiological | Radium 226 | pCi/L | 0.19 | 1.30 | -0.54 | NE | NE | No | 2025 | Decay of natural and man-made deposits. |
| Radiological | Radium 228 | pCi/L | 0.38 | 1.30 | -0.30 | NE | NE | No | 2025 | Decay of natural and man-made deposits. |
| Radiological | Gross-Alpha | pCi/L | 3.1 | 8.2 | 0.5 | 15 | NE | No | 2025 | Decay of natural and man-made deposits. |
| Radiological | Gross-Beta | pCi/L | 4.2 | 18.2 | 0.9 | 50 | NE | No | 2025 | Decay of natural and man-made deposits. |
| Radiological | Uranium | ug/L | 3 | 8 | 0 | 30 | NE | No | 2025 | Decay of natural and man-made deposits. |
| Radiological | Radon | pCi/L | ND | 0 | ND | NE | NE | No | 2020 | Naturally occurring in soil. |
| Disinfectants / Disinfection By-Products |
| Disinfection by-products | Chlorine | mg/L | 0.56 | 0.89 | 0.14 | 4 | NE | No | 2025 | Drinking water disinfectant. |
| Disinfection by-products | TTHMs | ug/L | 34.22 | 51.6 | 18.2 | 80 | NE | No | 2025 | High result is not a violation; violation is determined on annual location average. By-product of drinking water disinfection. |
| Disinfection by-products | HAA5s | ug/L | 19.41 | 27.3 | 8.19 | 60 | NE | No | 2025 | High result is not a violation; violation is determined on annual location average. By-product of drinking water disinfection. |
| Disinfection by-products | HAA6 | ug/L | | | | UR | NE | No | 2023 | By-product of drinking water disinfection. |
| Disinfection by-products | Highest Annual Location Wide Avg. | ug/L | TTHM = 37.9 ug/L; HAA5s = 21.8 ug/L | | | | | | | |
| Disinfection by-products | Bromate | ug/L | ND | ND | ND | 10 | 0 | No | 2025 | By-product of drinking water disinfection. |
| Disinfection by-products | Chlorine Dioxide | ug/L | 3.27 | 100.0000015 | ND | 800 | NE | No | 2025 | Drinking water disinfectant. |
| Disinfection by-products | Chlorite | mg/L | 0.26 | 0.48 | 0.08 | 1 | 0.8 | No | 2025 | By-product of drinking water disinfection. |
| Organic material |
| Organic material | Total Organic Carbon | mg/L | 1.79 | 2.40 | ND | TT | NE | No | 2025 | Naturally occurring. |
| Organic material | Dissolved Organic Carbon | mg/L | 1.93 | 2.39 | 0.50 | TT | NE | No | 2025 | Naturally occurring. |
| Organic material | UV-254 | 1/cm | 0.03 | 0.05 | 0.01 | UR | NE | No | 2025 | This is a measure of the concentration of UV-absorbing organic compounds. Naturally occurring. |
| Protozoa (sampled at source water) |
| Protozoa | Cryptosporidium | Oocysts/1L | ND | ND | ND | TT | 0 | No | 2017 | Parasite that enters lakes and rivers through sewage and animal waste. |
| Protozoa | Giardia | Cysts/1L | 1.5 | 7 | ND | TT | 0 | No | 2017 | Parasite that enters lakes and rivers through sewage and animal waste. |
| Microbiological |
| Microbiological | Total Coliform | % Positive per Month | 0% | 0% | 0% | Not >5% | 0 | No | 2025 | MCL is for monthly compliance. All repeat samples were negative; no violations were issued. Human and animal fecal waste, naturally occurring in the environment. |
| Microbiological | HPC | MPN/mL | 32.5 | 146 | ND | 500 | 0 | No | 2025 | Used to measure the overall bacteriological quality of drinking water. |
| Lead and Copper (tested at the consumer’s tap) – monitoring required every 3 years |
| Lead and Copper | Lead | ug/L | 1 | 7 | 0.00 | AL = 15 | NE | No | | Lead violation is determined by the 90th percentile result. Corrosion of household plumbing systems; erosion of naturally occurring deposits. |
| Lead and Copper | Copper | ug/L | 164 | 693 | 43 | AL = 1300 | NE | No | | Copper violation is determined by the 90th percentile result. Corrosion of household plumbing systems; erosion of naturally occurring deposits. |
| Lead and Copper | 90th Percentile | | Lead = 2.23 ppb; Copper = 252 ppb | | | | | | | |
| Lead and Copper | # of sites above Action Level | | Lead = 0; Copper = 0 | | | | | | | |